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19,300 | 1501.00661 | Shi-Ju Ran | Shi-Ju Ran, Cheng Peng, Wei Li, and Gang Su | Identification of Degeneracy and Criticality of Two-Dimensional
Statistical and Quantum Systems by the Boundary States of Tensor Networks | 4+3 pages, 3+3 figures | null | null | null | cond-mat.str-el cond-mat.stat-mech physics.comp-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a systematic scheme to reach the properties of two-dimensional
(2D) statistical and quantum systems by studying the effective
(1+1)-dimensional theory that is constructed from the tensor network
representation. On on hand, we discover that the degeneracy of the 2D system
can be determined by the purity of the boundary thermal state, which is the
density operator of the effective theory at zero (effective) temperature. On
the other hand, we find that the gapped (or critical) 2D system leads to a
gapped (or critical) effective (1+1)-dimensional theory whose criticality can
be accessed by the entanglement entropy $S$ of its ground state dubbed as
boundary pure state. We also uncover that for the critical systems, $S$ obeys
the same logarithmic law as that found in the critical 1D quantum chains, which
reads $S = (\kappa c/6)\log_2 D + const.$, with $c$ the central charge and
$\kappa$ a constant related to the scaling property of the correlation length
$\xi$ as $\xi \sim D^{\kappa}$. Such a scaling law presents an efficient way to
characterize the critical universality class of the original 2D systems. An
important implication of our work is that many well-established theories for 1D
quantum chains become available for studying 2D systems with the help of the
proposed lower dimensional correspondence.
| [{'version': 'v1', 'created': 'Sun, 4 Jan 2015 10:41:06 GMT'}
{'version': 'v2', 'created': 'Tue, 20 Jan 2015 08:37:13 GMT'}] | 2015-01-21 | [array(['Ran', 'Shi-Ju', ''], dtype=object)
array(['Peng', 'Cheng', ''], dtype=object)
array(['Li', 'Wei', ''], dtype=object)
array(['Su', 'Gang', ''], dtype=object)] |
19,301 | 1802.08245 | Satrya Fajri Pratama | Satrya Fajri Pratama, Azah Kamilah Muda, and Yun-Huoy Choo | Arbitrarily Substantial Number Representation for Complex Number | This is a published version of an article published in Journal of
Telecommunication, Electronic and Computer Engineering, available online at:
http://journal.utem.edu.my/index.php/jtec/article/view/3590 | Journal of Telecommunication, Electronic and Computer Engineering
(2018), 23-26 | null | null | cs.NA | http://creativecommons.org/licenses/by/4.0/ | Researchers are often perplexed when their machine learning algorithms are
required to deal with complex number. Various strategies are commonly employed
to project complex number into real number, although it is frequently
sacrificing the information contained in the complex number. This paper
proposes a new method and four techniques to represent complex number as real
number, without having to sacrifice the information contained. The proposed
techniques are also capable of retrieving the original complex number from the
representing real number, with little to none of information loss. The
promising applicability of the proposed techniques has been demonstrated and
worth to receive further exploration in representing the complex number.
| [{'version': 'v1', 'created': 'Thu, 22 Feb 2018 18:58:09 GMT'}
{'version': 'v2', 'created': 'Fri, 23 Feb 2018 02:12:53 GMT'}
{'version': 'v3', 'created': 'Mon, 2 Apr 2018 07:09:04 GMT'}] | 2018-04-03 | [array(['Pratama', 'Satrya Fajri', ''], dtype=object)
array(['Muda', 'Azah Kamilah', ''], dtype=object)
array(['Choo', 'Yun-Huoy', ''], dtype=object)] |
19,302 | 1304.3042 | Jean-Luc Marichal | Miguel Couceiro, Jean-Luc Marichal | Discrete integrals based on comonotonic modularity | null | Axioms 2 (3) (2013) 390-403 | 10.3390/axioms2030390 | null | math.FA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | It is known that several discrete integrals, including the Choquet and Sugeno
integrals as well as some of their generalizations, are comonotonically modular
functions. Based on a recent description of the class of comonotonically
modular functions, we axiomatically identify more general families of discrete
integrals that are comonotonically modular, including signed Choquet integrals
and symmetric signed Choquet integrals as well as natural extensions of Sugeno
integrals.
| [{'version': 'v1', 'created': 'Wed, 10 Apr 2013 18:16:25 GMT'}
{'version': 'v2', 'created': 'Tue, 27 Aug 2013 11:13:31 GMT'}] | 2013-08-28 | [array(['Couceiro', 'Miguel', ''], dtype=object)
array(['Marichal', 'Jean-Luc', ''], dtype=object)] |
19,303 | 2001.06475 | Mattia Halter | Mattia Halter, Laura B\'egon-Lours, Valeria Bragaglia, Marilyne Sousa,
Bert Jan Offrein, Stefan Abel, Mathieu Luisier, Jean Fompeyriney | A back-end, CMOS compatible ferroelectric Field Effect Transistor for
synaptic weights | 14 pages, 5 figures, supplementary information available, submitted
to ACS Applied Materials & Interfaces | null | 10.1021/acsami.0c00877 | null | cs.ET physics.app-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Neuromorphic computing architectures enable the dense co-location of memory
and processing elements within a single circuit. This co-location removes the
communication bottleneck of transferring data between separate memory and
computing units as in standard von Neuman architectures for data-critical
applications including machine learning. The essential building blocks of
neuromorphic systems are non-volatile synaptic elements such as memristors. Key
memristor properties include a suitable non-volatile resistance range,
continuous linear resistance modulation and symmetric switching. In this work,
we demonstrate voltage-controlled, symmetric and analog potentiation and
depression of a ferroelectric Hf$_{57}$Zr$_{43}$O$_{2}$ (HZO) field effect
transistor (FeFET) with good linearity. Our FeFET operates with a low writing
energy (fJ) and fast programming time (40 ns). Retention measurements have been
done over 4-bits depth with low noise (1%) in the tungsten oxide (WO$_{x}$)
read out channel. By adjusting the channel thickness from 15nm to 8nm, the
on/off ratio of the FeFET can be engineered from 1% to 200% with an
on-resistance ideally >100 kOhm, depending on the channel geometry. The device
concept is using earth-abundant materials, and is compatible with a back end of
line (BEOL) integration into complementary metal-oxidesemiconductor (CMOS)
processes. It has therefore a great potential for the fabrication of high
density, large-scale integrated arrays of artificial analog synapses.
| [{'version': 'v1', 'created': 'Fri, 17 Jan 2020 18:54:13 GMT'}] | 2020-03-31 | [array(['Halter', 'Mattia', ''], dtype=object)
array(['Bégon-Lours', 'Laura', ''], dtype=object)
array(['Bragaglia', 'Valeria', ''], dtype=object)
array(['Sousa', 'Marilyne', ''], dtype=object)
array(['Offrein', 'Bert Jan', ''], dtype=object)
array(['Abel', 'Stefan', ''], dtype=object)
array(['Luisier', 'Mathieu', ''], dtype=object)
array(['Fompeyriney', 'Jean', ''], dtype=object)] |
19,304 | math/0502159 | Satyan L. Devadoss | Suzanne M. Armstrong, Michael Carr, Satyan L. Devadoss, Eric Engler,
Ananda Leininger, Michael Manapat | Particle Configurations and Coxeter Operads | 25 pages, 18 figures; revision of Coxeter operads | Homotopy and Related Structures, Volume 4 (2009) 83-109. | null | null | math.GT math-ph math.MP math.QA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There exist natural generalizations of the real moduli space of Riemann
spheres based on manipulations of Coxeter complexes. These novel spaces inherit
a tiling by the graph-associahedra convex polytopes. We obtain explicit
configuration space models for the classical infinite families of finite and
affine Weyl groups using particles on lines and circles. A Fulton-MacPherson
compactification of these spaces is described and this is used to define the
Coxeter operad. A complete classification of the building sets of these
complexes is also given, along with a computation of their Euler
characteristics.
| [{'version': 'v1', 'created': 'Tue, 8 Feb 2005 15:21:49 GMT'}
{'version': 'v2', 'created': 'Fri, 9 Dec 2005 20:54:51 GMT'}
{'version': 'v3', 'created': 'Mon, 9 Mar 2009 18:19:10 GMT'}] | 2009-08-27 | [array(['Armstrong', 'Suzanne M.', ''], dtype=object)
array(['Carr', 'Michael', ''], dtype=object)
array(['Devadoss', 'Satyan L.', ''], dtype=object)
array(['Engler', 'Eric', ''], dtype=object)
array(['Leininger', 'Ananda', ''], dtype=object)
array(['Manapat', 'Michael', ''], dtype=object)] |
19,305 | 1910.12302 | Nihal Yilmaz \"Ozg\"ur | Nihal \"Ozg\"ur and Nihal Ta\c{s} | Pata Zamfirescu Type Fixed-Disc Results with a Proximal Application | 11 pages | null | null | null | math.MG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is concerning to the geometric study of fixed points of a
self-mapping on a metric space. We establish new generalized contractive
conditions which ensure that a self-mapping has a fixed disc or a fixed circle.
We introduce the notion of a best proximity circle and explore some proximal
contractions for a non-self-mapping as an application. Necessary illustrative
examples are presented to highlight the importance of the obtained results.
| [{'version': 'v1', 'created': 'Sun, 27 Oct 2019 17:07:22 GMT'}] | 2019-10-29 | [array(['Özgür', 'Nihal', ''], dtype=object)
array(['Taş', 'Nihal', ''], dtype=object)] |
19,306 | 2004.12675 | Toshihiko Hiraiwa | Toshihiko Hiraiwa, Kouichi Soutome and Hitoshi Tanaka | A Forced Harmonic Oscillator, Interpreted as Diffraction of Light | 4 pages, 3 figures | Phys. Rev. E 102, 032211 (2020) | 10.1103/PhysRevE.102.032211 | null | physics.class-ph physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a simple forced harmonic oscillator with a natural frequency
varying with time. It is shown that the time evolution of such a system can be
written in a simplified form with Fresnel integrals, as long as the variation
of the natural frequency is sufficiently slow compared to the time period of
oscillation. Thanks to such a simple formulation, we found, for the first time,
that a forced harmonic oscillator with a slowly-varying natural frequency is
essentially equivalent to diffraction of light.
| [{'version': 'v1', 'created': 'Mon, 27 Apr 2020 09:43:16 GMT'}
{'version': 'v2', 'created': 'Tue, 14 Jul 2020 09:56:06 GMT'}] | 2020-09-16 | [array(['Hiraiwa', 'Toshihiko', ''], dtype=object)
array(['Soutome', 'Kouichi', ''], dtype=object)
array(['Tanaka', 'Hitoshi', ''], dtype=object)] |
19,307 | 1908.08570 | Ayush Maheshwari | Ayush Maheshwari, Kamal Kumar Murari, T. Jayaraman | Peak Electricity Demand and Global Warming in the Industrial and
Residential areas of Pune : An Extreme Value Approach | 20 pages, 6 figures, 2 tables | null | null | null | stat.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Industrial and residential activities respond distinctly to electricity
demand on temperature. Due to increasing temperature trend on account of global
warming, its impact on peak electricity demand is a proxy for effective
management of electricity infrastructure. Few studies explore the relationship
between electricity demand and temperature changes in industrial areas in India
mainly due to the limitation of data. The precise role of industrial and
residential activities response to the temperature is not explored in
sub-tropical humid climate of India. Here, we show the temperature sensitivity
of industrial and residential areas in the city of Pune, Maharashtra by keeping
other influencing variables on electricity demand as constant. The study seeks
to estimate the behaviour of peak electricity demand with the apparent
temperature (AT) using the Extreme Value Theory. Our analysis shows that
industrial activities are not much influenced by the temperature whereas
residential activities show around 1.5-2% change in average electricity demand
with 1 degree rise in AT. Further, we show that peak electricity demand in
residential areas, performed using stationary and non-stationary GEV models,
are significantly influenced by the rise in temperature. The study shows that
with the improvement in data collection, better planning for the future
development, accounting for the climate change effects, will enhance the
effectiveness of electricity distribution system. The study is limited to the
geographical area of Pune. However, the methods are useful in estimating the
peak power load attributed to climate change to other geographical regions
located in subtropical and humid climate.
| [{'version': 'v1', 'created': 'Thu, 22 Aug 2019 19:17:34 GMT'}] | 2019-08-26 | [array(['Maheshwari', 'Ayush', ''], dtype=object)
array(['Murari', 'Kamal Kumar', ''], dtype=object)
array(['Jayaraman', 'T.', ''], dtype=object)] |
19,308 | 1607.03363 | Izabela Spaleniak | Izabela Spaleniak, David G. MacLachlan, Itandehui Gris-S\'anchez,
Debaditya Choudhury, Robert J. Harris, Alexander Arriola, Jeremy R.
Allington-Smith, Timothy A. Birks, Robert R. Thomson | Modal noise characterisation of a hybrid reformatter | 9 pages, 9 figures, submitted to SPIE Astronomical Telescopes &
Instrumentation 2016 (9912-78) | null | 10.1117/12.2232708 | null | physics.optics astro-ph.IM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper reports on the modal noise characterisation of a hybrid
reformatter. The device consists of a multicore-fibre photonic lantern and an
ultrafast laser-inscribed slit reformatter. It operates around 1550 nm and
supports 92 modes. Photonic lanterns transform a multimode signal into an array
of single-mode signals, and thus combine the high coupling efficiency of
multimode fibres with the diffraction-limited performance of single-mode
fibres. This paper presents experimental measurements of the device point
spread function properties under different coupling conditions, and its
throughput behaviour at high spectral resolution. The device demonstrates
excellent scrambling but its point spread function is not completely stable.
Mode field diameter and mode barycentre position at the device output vary as
the multicore-fibre is agitated due to the fabrication imperfections.
| [{'version': 'v1', 'created': 'Mon, 11 Jul 2016 12:46:55 GMT'}] | 2016-12-07 | [array(['Spaleniak', 'Izabela', ''], dtype=object)
array(['MacLachlan', 'David G.', ''], dtype=object)
array(['Gris-Sánchez', 'Itandehui', ''], dtype=object)
array(['Choudhury', 'Debaditya', ''], dtype=object)
array(['Harris', 'Robert J.', ''], dtype=object)
array(['Arriola', 'Alexander', ''], dtype=object)
array(['Allington-Smith', 'Jeremy R.', ''], dtype=object)
array(['Birks', 'Timothy A.', ''], dtype=object)
array(['Thomson', 'Robert R.', ''], dtype=object)] |
19,309 | 1711.05694 | Stephen Green | J\'er\'emie Gagnon-Bischoff, Stephen R. Green, Philippe Landry,
N\'estor Ortiz | Extended I-Love relations for slowly rotating neutron stars | 31 pages, 6 figures, 9 tables; v2: updated to match published version | Phys. Rev. D 97, 064042 (2018) | 10.1103/PhysRevD.97.064042 | null | gr-qc astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Observations of gravitational waves from inspiralling neutron star
binaries---such as GW170817---can be used to constrain the nuclear equation of
state by placing bounds on stellar tidal deformability. For slowly rotating
neutron stars, the response to a weak quadrupolar tidal field is characterized
by four internal-structure-dependent constants called "Love numbers." The tidal
Love numbers $k_2^\text{el}$ and $k_2^\text{mag}$ measure the tides raised by
the gravitoelectric and gravitomagnetic components of the applied field, and
the rotational-tidal Love numbers $\mathfrak{f}^\text{o}$ and
$\mathfrak{k}^\text{o}$ measure those raised by couplings between the applied
field and the neutron star spin. In this work we compute these four Love
numbers for perfect fluid neutron stars with realistic equations of state. We
discover (nearly) equation-of-state independent relations between the
rotational-tidal Love numbers and the moment of inertia, thereby extending the
scope of I-Love-Q universality. We find that similar relations hold among the
tidal and rotational-tidal Love numbers. These relations extend the
applications of I-Love universality in gravitational-wave astronomy. As our
findings differ from those reported in the literature, we derive general
formulas for the rotational-tidal Love numbers in post-Newtonian theory and
confirm numerically that they agree with our general-relativistic computations
in the weak-field limit.
| [{'version': 'v1', 'created': 'Wed, 15 Nov 2017 17:41:20 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Apr 2018 17:27:38 GMT'}] | 2018-04-03 | [array(['Gagnon-Bischoff', 'Jérémie', ''], dtype=object)
array(['Green', 'Stephen R.', ''], dtype=object)
array(['Landry', 'Philippe', ''], dtype=object)
array(['Ortiz', 'Néstor', ''], dtype=object)] |
19,310 | 1606.07723 | John M. Myers | John M. Myers, F. Hadi Madjid | Logical synchronization: how evidence and hypotheses steer atomic clocks | 16 pages, 4 figures. arXiv admin note: substantial text overlap with
arXiv:1407.8020 | Proc. SPIE 9123, Quantum Information and Computation XII, 91230T
(May 22, 2014) | 10.1117/12.2054945 | null | quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A clock steps a computer through a cycle of phases. For the propagation of
logical symbols from one computer to another, each computer must mesh its
phases with arrivals of symbols from other computers. Even the best atomic
clocks drift unforeseeably in frequency and phase; feedback steers them toward
aiming points that depend on a chosen wave function and on hypotheses about
signal propagation. A wave function, always under-determined by evidence,
requires a guess. Guessed wave functions are coded into computers that steer
atomic clocks in frequency and position---clocks that step computers through
their phases of computations, as well as clocks, some on space vehicles, that
supply evidence of the propagation of signals. Recognizing the dependence of
the phasing of symbol arrivals on guesses about signal propagation elevates
`logical synchronization.' from its practice in computer engineering to a
discipline essential to physics. Within this discipline we begin to explore
questions invisible under any concept of time that fails to acknowledge the
unforeseeable. In particular, variation of spacetime curvature is shown to
limit the bit rate of logical communication.
| [{'version': 'v1', 'created': 'Fri, 24 Jun 2016 15:29:27 GMT'}] | 2016-06-27 | [array(['Myers', 'John M.', ''], dtype=object)
array(['Madjid', 'F. Hadi', ''], dtype=object)] |
19,311 | 1103.0746 | Ovidiu Munteanu | Ovidiu Munteanu and Jiaping Wang | Smooth metric measure spaces with non-negative curvature | 24 pages, Theorem 4.1 has been improved | null | null | null | math.DG math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study both function theoretic and spectral properties on complete
noncompact smooth metric measure space $(M,g,e^{-f}dv)$ with nonnegative
Bakry-\'{E}mery Ricci curvature. Among other things, we derive a gradient
estimate for positive $f$-harmonic functions and obtain as a consequence the
strong Liouville property under the optimal sublinear growth assumption on $f.$
We also establish a sharp upper bound of the bottom spectrum of the
$f$-Laplacian in terms of the linear growth rate of $f.$ Moreover, we show that
if equality holds and $M$ is not connected at infinity, then $M$ must be a
cylinder. As an application, we conclude steady Ricci solitons must be
connected at infinity.
| [{'version': 'v1', 'created': 'Thu, 3 Mar 2011 18:02:46 GMT'}
{'version': 'v2', 'created': 'Mon, 7 Mar 2011 20:38:23 GMT'}] | 2011-03-08 | [array(['Munteanu', 'Ovidiu', ''], dtype=object)
array(['Wang', 'Jiaping', ''], dtype=object)] |
19,312 | quant-ph/0202162 | Tobias J. Osborne | Tobias J. Osborne, Michael A. Nielsen | Entanglement in a simple quantum phase transition | 14 pages, 7 eps figures | Phys. Rev. A 66, 032110 (2002) | 10.1103/PhysRevA.66.032110 | null | quant-ph cond-mat | null | What entanglement is present in naturally occurring physical systems at
thermal equilibrium? Most such systems are intractable and it is desirable to
study simple but realistic systems which can be solved. An example of such a
system is the 1D infinite-lattice anisotropic XY model. This model is exactly
solvable using the Jordan-Wigner transform, and it is possible to calculate the
two-site reduced density matrix for all pairs of sites. Using the two-site
density matrix, the entanglement of formation between any two sites is
calculated for all parameter values and temperatures. We also study the
entanglement in the transverse Ising model, a special case of the XY model,
which exhibits a quantum phase transition. It is found that the next-nearest
neighbour entanglement (though not the nearest-neighbour entanglement) is a
maximum at the critical point. Furthermore, we show that the critical point in
the transverse Ising model corresponds to a transition in the behaviour of the
entanglement between a single site and the remainder of the lattice.
| [{'version': 'v1', 'created': 'Wed, 27 Feb 2002 04:29:23 GMT'}] | 2007-05-23 | [array(['Osborne', 'Tobias J.', ''], dtype=object)
array(['Nielsen', 'Michael A.', ''], dtype=object)] |
19,313 | 2102.10906 | Jordan Richards | Jordan Richards and Jonathan A. Tawn and Simon Brown | Modelling Extremes of Spatial Aggregates of Precipitation using
Conditional Methods | null | null | null | null | stat.ME stat.AP | http://creativecommons.org/licenses/by/4.0/ | Inference on the extremal behaviour of spatial aggregates of precipitation is
important for quantifying river flood risk. There are two classes of previous
approach, with one failing to ensure self-consistency in inference across
different regions of aggregation and the other imposing highly restrictive
assumptions. To overcome these issues, we propose a model for high-resolution
precipitation data, from which we can simulate realistic fields and explore the
behaviour of spatial aggregates. Recent developments have seen spatial
extensions of the Heffernan and Tawn (2004) model for conditional multivariate
extremes, which can handle a wide range of dependence structures. Our
contribution is twofold: extensions and improvements of this approach and its
model inference for high-dimensional data; and a novel framework for deriving
aggregates addressing edge effects and sub-regions without rain. We apply our
modelling approach to gridded East-Anglia, UK precipitation data. Return-level
curves for spatial aggregates over different regions of various sizes are
estimated and shown to fit very well to the data.
| [{'version': 'v1', 'created': 'Mon, 22 Feb 2021 11:14:12 GMT'}
{'version': 'v2', 'created': 'Tue, 9 Nov 2021 14:54:54 GMT'}
{'version': 'v3', 'created': 'Fri, 28 Jan 2022 16:55:40 GMT'}
{'version': 'v4', 'created': 'Tue, 21 Jun 2022 10:59:46 GMT'}] | 2022-06-22 | [array(['Richards', 'Jordan', ''], dtype=object)
array(['Tawn', 'Jonathan A.', ''], dtype=object)
array(['Brown', 'Simon', ''], dtype=object)] |
19,314 | 1508.03945 | Tatsuo Nishitani | F. Colombini, T. Nishitani, J. Rauch | Weakly Hyperbolic Systems by Symmetrization | null | null | null | null | math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study hyperbolic first order systems and propose a new method proving
Gevrey well posedness, constructing a symmetrizer, motivated by a special
Lyapunov function for linear ODE. The proof not only gives a priori estimates
straightforward so simply but also clarifies some effects coming from the
spectral structures other than the multiplicities of the eigenvalues.
| [{'version': 'v1', 'created': 'Mon, 17 Aug 2015 08:16:43 GMT'}
{'version': 'v2', 'created': 'Mon, 18 Apr 2016 08:34:17 GMT'}] | 2016-04-19 | [array(['Colombini', 'F.', ''], dtype=object)
array(['Nishitani', 'T.', ''], dtype=object)
array(['Rauch', 'J.', ''], dtype=object)] |
19,315 | 2009.09714 | Antonios Nathanail | Antonios Nathanail, Ramandeep Gill, Oliver Porth, Christian M. Fromm,
Luciano Rezzolla | 3D magnetised jet break-out from neutron-star binary merger ejecta:
afterglow emission from the jet and the ejecta | MNRAS accepted, updated version | null | 10.1093/mnras/stab115 | null | astro-ph.HE gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We perform three-dimensional (3D) general-relativistic magnetohydrodynamic
simulations to model the jet break-out from the ejecta expected to be produced
in a binary neutron-star merger. The structure of the relativistic outflow from
the 3D simulation confirms our previous results from 2D simulations, namely,
that a relativistic magnetized outflow breaking out from the merger ejecta
exhibits a hollow core of $\theta_{\rm core}\approx4^{\circ}$, an opening angle
of $\theta_{\rm jet}\gtrsim10^{\circ}$, and is accompanied by a wind of ejected
matter that will contribute to the kilonova emission. We also compute the
non-thermal afterglow emission of the relativistic outflow and fit it to the
panchromatic afterglow from GRB170817A, together with the superluminal motion
reported from VLBI observations. In this way, we deduce an observer angle of
$\theta_{\rm obs}= 35.7^{\circ
\,\,+1.8}_{\phantom{\circ \,\,}-2.2}$. We further compute the afterglow
emission from the ejected matter and constrain the parameter space for a
scenario in which the matter responsible for the thermal kilonova emission will
also lead to a non-thermal emission yet to be observed.
| [{'version': 'v1', 'created': 'Mon, 21 Sep 2020 09:31:29 GMT'}
{'version': 'v2', 'created': 'Fri, 29 Jan 2021 08:35:03 GMT'}] | 2021-02-01 | [array(['Nathanail', 'Antonios', ''], dtype=object)
array(['Gill', 'Ramandeep', ''], dtype=object)
array(['Porth', 'Oliver', ''], dtype=object)
array(['Fromm', 'Christian M.', ''], dtype=object)
array(['Rezzolla', 'Luciano', ''], dtype=object)] |
19,316 | astro-ph/0607247 | Mathieu de Naurois | Mathieu de Naurois | Analysis methods for Atmospheric Cerenkov Telescopes | 12 pages, 10 figures, proceedings of the conference "Towards a
Network of Atmospheric Cherenkov Detectors VII", April 2005, Palaiseau,
France | null | null | null | astro-ph | null | Three different analysis techniques for Atmospheric Imaging System are
presented. The classical Hillas parameters based technique is shown to be
robust and efficient, but more elaborate techniques can improve the sensitivity
of the analysis. A comparison of the different analysis techniques shows that
they use different information for gamma-hadron separation, and that it is
possible to combine their qualities.
| [{'version': 'v1', 'created': 'Wed, 12 Jul 2006 04:22:43 GMT'}] | 2007-05-23 | [array(['de Naurois', 'Mathieu', ''], dtype=object)] |
19,317 | 2001.06615 | Mitchell Burger | Mitchell Burger | The Risk to Population Health Equity Posed by Automated Decision
Systems: A Narrative Review | 11 pages excluding references | null | null | null | cs.CY cs.AI | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Artificial intelligence is already ubiquitous, and is increasingly being used
to autonomously make ever more consequential decisions. However, there has been
relatively little research into the existing and possible consequences for
population health equity. A narrative review was undertaken using a hermeneutic
approach to explore current and future uses of narrow AI and automated decision
systems (ADS) in medicine and public health, issues that have emerged, and
implications for equity. Accounts reveal a tremendous expectation on AI to
transform medical and public health practices. Prominent demonstrations of AI
capability - particularly in diagnostic decision making, risk prediction, and
surveillance - are stimulating rapid adoption, spurred by COVID-19. Automated
decisions being made have significant consequences for individual and
population health and wellbeing. Meanwhile, it is evident that hazards
including bias, incontestability, and privacy erosion have emerged in sensitive
domains such as criminal justice where narrow AI and ADS are in common use.
Reports of issues arising from their use in health are already appearing. As
the use of ADS in health expands, it is probable that these hazards will
manifest more widely. Bias, incontestability, and privacy erosion give rise to
mechanisms by which existing social, economic and health disparities are
perpetuated and amplified. Consequently, there is a significant risk that use
of ADS in health will exacerbate existing population health inequities. The
industrial scale and rapidity with which ADS can be applied heightens the risk
to population health equity. It is incumbent on health practitioners and policy
makers therefore to explore the potential implications of using ADS, to ensure
the use of artificial intelligence promotes population health and equity.
| [{'version': 'v1', 'created': 'Sat, 18 Jan 2020 06:52:47 GMT'}
{'version': 'v2', 'created': 'Thu, 20 Jan 2022 05:25:43 GMT'}] | 2022-01-21 | [array(['Burger', 'Mitchell', ''], dtype=object)] |
19,318 | 1401.6094 | Leonardo Giuliano Trombetta | Diana L. L\'opez Nacir, Francisco D. Mazzitelli and Leonardo G.
Trombetta | Hartree approximation in curved spacetimes revisited II: The
semiclassical Einstein equations and de Sitter self-consistent solutions | 32 pages, 4 figures | Phys. Rev. D 89, 084013 (2014) | 10.1103/PhysRevD.89.084013 | null | hep-th gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the semiclassical Einstein equations (SEE) in the presence of a
quantum scalar field with self-interaction $\lambda\phi^4$. Working in the
Hartree truncation of the two-particle irreducible (2PI) effective action, we
compute the vacuum expectation value of the energy-momentum tensor of the
scalar field, which act as a source of the SEE. We obtain the renormalized SEE
by implementing a consistent renormalization procedure. We apply our results to
find self-consistent de Sitter solutions to the SEE in situations with or
without spontaneous breaking of the $Z_2$-symmetry.
| [{'version': 'v1', 'created': 'Thu, 23 Jan 2014 18:38:17 GMT'}] | 2016-09-22 | [array(['Nacir', 'Diana L. López', ''], dtype=object)
array(['Mazzitelli', 'Francisco D.', ''], dtype=object)
array(['Trombetta', 'Leonardo G.', ''], dtype=object)] |
19,319 | 0711.3244 | Sangtaek Kim | Sangtaek Kim, Robert R. Mcleod, Mark Saffman, and Kelvin H. Wagner | Doppler-free, Multi-wavelength Acousto-optic deflector for two-photon
addressing arrays of Rb atoms in a Quantum Information Processor | 28 pages, 16 figures, submitted to Applied Optics | Appl. Opt. 47, 1816 (2008) | 10.1364/AO.47.001816 | null | quant-ph | null | We demonstrate a dual wavelength acousto-optic deflector (AOD) designed to
deflect two wavelengths to the same angles by driving with two RF frequencies.
The AOD is designed as a beam scanner to address two-photon transitions in a
two-dimensional array of trapped neutral Rb atoms in a quantum computer.
Momentum space is used to design AODs that have the same diffraction angles for
two wavelengths (780 nm and 480 nm) and have non-overlapping Bragg-matched
frequency response at these wavelengths, so that there will be no crosstalk
when proportional RF frequencies are applied to diffract the two wavelengths.
The appropriate crystal orientation, crystal shape, transducer size, and
transducer height are determined for an AOD made with a Tellurium dioxide
crystal (TeO2). The designed and fabricated AOD has more than 100 resolvable
spots, widely separated bandshapes for the two wavelengths within an overall
octave bandwidth, spatially overlapping diffraction angles for both wavelengths
(780 nm and 480 nm), and a 4 usec or less access time. Cascaded AODs in which
the first device upshifts and the second downshifts allow Doppler-free scanning
as required for addressing the narrow atomic resonance without detuning. We
experimentally show the diffraction-limited Doppler-free scanning performance
and spatial resolution of the designed AOD.
| [{'version': 'v1', 'created': 'Wed, 21 Nov 2007 01:34:55 GMT'}] | 2012-06-05 | [array(['Kim', 'Sangtaek', ''], dtype=object)
array(['Mcleod', 'Robert R.', ''], dtype=object)
array(['Saffman', 'Mark', ''], dtype=object)
array(['Wagner', 'Kelvin H.', ''], dtype=object)] |
19,320 | 1807.06564 | Daniel Ueltschi | Costanza Benassi, Daniel Ueltschi | Loop correlations in random wire models | 20 pages, 5 figures. An error in Prop. 4.1 has been corrected | Commun. Math. Phys. 374, 525-547 (2020) | 10.1007/s00220-019-03474-9 | null | math-ph math.MP math.PR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We introduce a family of loop soup models on the hypercubic lattice. The
models involve links on the edges, and random pairings of the link endpoints on
the sites. We conjecture that loop correlations of distant points are given by
Poisson-Dirichlet correlations in dimensions three and higher. We prove that,
in a specific random wire model that is related to the classical XY spin
system, the probability that distant sites form an even partition is given by
the Poisson-Dirichlet counterpart.
| [{'version': 'v1', 'created': 'Tue, 17 Jul 2018 17:13:22 GMT'}
{'version': 'v2', 'created': 'Tue, 31 Jul 2018 11:17:15 GMT'}
{'version': 'v3', 'created': 'Sat, 6 Apr 2019 15:29:41 GMT'}
{'version': 'v4', 'created': 'Wed, 27 Apr 2022 15:09:16 GMT'}] | 2022-04-28 | [array(['Benassi', 'Costanza', ''], dtype=object)
array(['Ueltschi', 'Daniel', ''], dtype=object)] |
19,321 | 1402.2875 | Anton Daitche | Anton Daitche and Tam\'as T\'el | Memory effects in chaotic advection of inertial particles | null | New Journal of Physics 16 073008 (2014) | 10.1088/1367-2630/16/7/073008 | null | physics.flu-dyn nlin.CD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A systematic investigation of the effect of the history force on particle
advection is carried out for both heavy and light particles. General relations
are given to identify parameter regions where the history force is expected to
be comparable with the Stokes drag. As an illustrative example, a paradigmatic
two-dimensional flow, the von K\'arm\'an flow is taken. For small (but not
extremely small) particles all investigated dynamical properties turn out to
heavily depend on the presence of memory when compared to the memoryless case:
the history force generates a rather non-trivial dynamics that appears to
weaken (but not to suppress) inertial effects, it enhances the overall
contribution of viscosity. We explore the parameter space spanned by the
particle size and the density ratio, and find a weaker tendency for
accumulation in attractors and for caustics formation. The Lyapunov exponent of
transients becomes larger with memory. Periodic attractors are found to have a
very slow, $t^{-1/2}$ type convergence towards the asymptotic form. We find
that the concept of snapshot attractors is useful to understand this slow
convergence: an ensemble of particles converges exponentially fast towards a
snapshot attractor, which undergoes a slow shift for long times.
| [{'version': 'v1', 'created': 'Wed, 12 Feb 2014 16:19:54 GMT'}
{'version': 'v2', 'created': 'Thu, 24 Jul 2014 11:50:37 GMT'}] | 2014-07-25 | [array(['Daitche', 'Anton', ''], dtype=object)
array(['Tél', 'Tamás', ''], dtype=object)] |
19,322 | 1810.12947 | Tsung-Han Hsieh | Tsung-Han Hsieh, Li Su and Yi-Hsuan Yang | A Streamlined Encoder/Decoder Architecture for Melody Extraction | This is a pre-print version of an ICASSP 2019 paper | null | null | null | eess.AS cs.SD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Melody extraction in polyphonic musical audio is important for music signal
processing. In this paper, we propose a novel streamlined encoder/decoder
network that is designed for the task. We make two technical contributions.
First, drawing inspiration from a state-of-the-art model for semantic
pixel-wise segmentation, we pass through the pooling indices between pooling
and un-pooling layers to localize the melody in frequency. We can achieve
result close to the state-of-the-art with much fewer convolutional layers and
simpler convolution modules. Second, we propose a way to use the bottleneck
layer of the network to estimate the existence of a melody line for each time
frame, and make it possible to use a simple argmax function instead of ad-hoc
thresholding to get the final estimation of the melody line. Our experiments on
both vocal melody extraction and general melody extraction validate the
effectiveness of the proposed model.
| [{'version': 'v1', 'created': 'Tue, 30 Oct 2018 18:15:03 GMT'}
{'version': 'v2', 'created': 'Mon, 18 Feb 2019 07:54:41 GMT'}] | 2019-02-19 | [array(['Hsieh', 'Tsung-Han', ''], dtype=object)
array(['Su', 'Li', ''], dtype=object)
array(['Yang', 'Yi-Hsuan', ''], dtype=object)] |
19,323 | 2108.02640 | Dipramit Majumdar | Dipramit Majumdar and B. Sury | Fruit Diophantine Equation | 3 pages, couple of typos fixed | null | null | null | math.HO math.NT | http://creativecommons.org/licenses/by/4.0/ | We show that the Diophantine equation given by X^3+ XYZ = Y^2+Z^2+5 has no
integral solution. As a consequence, we show that the family of elliptic curve
given by the Weierstrass equations Y^2-kXY = X^3 - (k^2+5) has no integral
point.
| [{'version': 'v1', 'created': 'Thu, 5 Aug 2021 14:26:57 GMT'}
{'version': 'v2', 'created': 'Sat, 7 Aug 2021 09:25:30 GMT'}] | 2021-11-15 | [array(['Majumdar', 'Dipramit', ''], dtype=object)
array(['Sury', 'B.', ''], dtype=object)] |
19,324 | cond-mat/0308441 | Joerg Rottler | Joerg Rottler and A.C. Maggs | A Continuum,O(N) Monte-Carlo algorithm for charged particles | null | null | 10.1063/1.1642590 | null | cond-mat.soft cond-mat.mtrl-sci physics.chem-ph physics.comp-ph | null | We introduce a Monte-Carlo algorithm for the simulation of charged particles
moving in the continuum. Electrostatic interactions are not instantaneous as in
conventional approaches, but are mediated by a constrained, diffusing electric
field on an interpolating lattice. We discuss the theoretical justifications of
the algorithm and show that it efficiently equilibrates model polyelectrolytes
and polar fluids. In order to reduce lattice artifacts that arise from the
interpolation of charges to the grid we implement a local, dynamic subtraction
algorithm. This dynamic scheme is completely general and can also be used with
other Coulomb codes, such as multigrid based methods.
| [{'version': 'v1', 'created': 'Thu, 21 Aug 2003 20:32:04 GMT'}] | 2009-11-10 | [array(['Rottler', 'Joerg', ''], dtype=object)
array(['Maggs', 'A. C.', ''], dtype=object)] |
19,325 | 1907.13431 | Sujoy Chakraborty | Sujoy Chakraborty | Chow Group of 1-cycles of the Moduli of Parabolic Bundles Over a Curve | Made changes in the overall presentation; comments and suggestions
are welcome | null | null | null | math.AG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the Chow group of 1-cycles of the moduli space of semistable
parabolic vector bundles of fixed rank, determinant and a generic weight over a
nonsingular projective curve over $\mathbb{C}$ of genus at least 3. We show
that, the Chow group of 1-cycles remains isomorphic as we vary the generic
weight. As a consequence, we can give an explicit description of the Chow group
in the case of rank 2 and determinant $\mathcal{O}(x)$, where $x\in X$ is a
fixed point.
| [{'version': 'v1', 'created': 'Wed, 31 Jul 2019 11:53:44 GMT'}
{'version': 'v2', 'created': 'Thu, 1 Aug 2019 16:26:10 GMT'}
{'version': 'v3', 'created': 'Sun, 19 Apr 2020 06:00:16 GMT'}] | 2020-04-21 | [array(['Chakraborty', 'Sujoy', ''], dtype=object)] |
19,326 | 1405.4466 | Amir H. Abbassi | Ali A. Asgari, Amir H. Abbassi, Jafar Khodagholizadeh | On the perturbation theory in spatially closed background | 25 pages,no figures,accepted for publiction in EPJC | Eur.Phys.J.C(2014)74:2917 | 10.1140/epjc/s10052-014-2917-0 | null | astro-ph.CO gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article,we investigate some features of the perturbation theory in
spatially closed universe. We will show that the perturbative field equations
in a spatially closed universe always have two independent adiabatic solutions
provided that the wavelengths of perturbation modes are very longer than the
Hubble horizon. It will be revealed that these adiabatic solutions do not
depend on the curvature directly. We also propound a new interpretation for the
curvature perturbation in terms of the unperturbed geometry.
| [{'version': 'v1', 'created': 'Sun, 18 May 2014 07:26:43 GMT'}] | 2014-06-06 | [array(['Asgari', 'Ali A.', ''], dtype=object)
array(['Abbassi', 'Amir H.', ''], dtype=object)
array(['Khodagholizadeh', 'Jafar', ''], dtype=object)] |
19,327 | 2010.14778 | Yonggan Fu | Yongan Zhang, Yonggan Fu, Weiwen Jiang, Chaojian Li, Haoran You, Meng
Li, Vikas Chandra, Yingyan Lin | DNA: Differentiable Network-Accelerator Co-Search | null | null | null | null | cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Powerful yet complex deep neural networks (DNNs) have fueled a booming demand
for efficient DNN solutions to bring DNN-powered intelligence into numerous
applications. Jointly optimizing the networks and their accelerators are
promising in providing optimal performance. However, the great potential of
such solutions have yet to be unleashed due to the challenge of simultaneously
exploring the vast and entangled, yet different design spaces of the networks
and their accelerators. To this end, we propose DNA, a Differentiable
Network-Accelerator co-search framework for automatically searching for matched
networks and accelerators to maximize both the task accuracy and acceleration
efficiency. Specifically, DNA integrates two enablers: (1) a generic design
space for DNN accelerators that is applicable to both FPGA- and ASIC-based DNN
accelerators and compatible with DNN frameworks such as PyTorch to enable
algorithmic exploration for more efficient DNNs and their accelerators; and (2)
a joint DNN network and accelerator co-search algorithm that enables
simultaneously searching for optimal DNN structures and their accelerators'
micro-architectures and mapping methods to maximize both the task accuracy and
acceleration efficiency. Experiments and ablation studies based on FPGA
measurements and ASIC synthesis show that the matched networks and accelerators
generated by DNA consistently outperform state-of-the-art (SOTA) DNNs and DNN
accelerators (e.g., 3.04x better FPS with a 5.46% higher accuracy on ImageNet),
while requiring notably reduced search time (up to 1234.3x) over SOTA
co-exploration methods, when evaluated over ten SOTA baselines on three
datasets. All codes will be released upon acceptance.
| [{'version': 'v1', 'created': 'Wed, 28 Oct 2020 05:57:16 GMT'}] | 2020-10-29 | [array(['Zhang', 'Yongan', ''], dtype=object)
array(['Fu', 'Yonggan', ''], dtype=object)
array(['Jiang', 'Weiwen', ''], dtype=object)
array(['Li', 'Chaojian', ''], dtype=object)
array(['You', 'Haoran', ''], dtype=object)
array(['Li', 'Meng', ''], dtype=object)
array(['Chandra', 'Vikas', ''], dtype=object)
array(['Lin', 'Yingyan', ''], dtype=object)] |
19,328 | nucl-th/0407098 | Hartmuth Arenh\"ovel | Agus Salam and Hartmuth Arenhoevel | Interaction effects in ${\bm K^+}$ photoproduction on the deuteron | 20 pages, 18 figures, revtex4 | Phys.Rev. C70 (2004) 044008 | 10.1103/PhysRevC.70.044008 | MKPH-T-04_06 | nucl-th | null | Kaon photoproduction on the deuteron is studied with respect to a specific
two-body contribution, namely a pion mediated production process, besides other
final state interaction contributions from kaon-nucleon and hyperon-nucleon
scattering. In this process, a pion is first photoproduced on one nucleon and
then interacts with the spectator nucleon in a strangeness exchange reaction
leading to a kaon and a hyperon. A sizeable effect from this pion mediated
contribution is found, considerably larger than the previously studied
hyperon-nucleon rescattering, whereas kaon-nucleon rescattering is much less
important. Besides total and semi-inclusive differential cross sections, tensor
target asymmetries are studied with respect to the influence of such
interaction effects.
| [{'version': 'v1', 'created': 'Wed, 28 Jul 2004 11:54:27 GMT'}] | 2009-11-10 | [array(['Salam', 'Agus', ''], dtype=object)
array(['Arenhoevel', 'Hartmuth', ''], dtype=object)] |
19,329 | 1904.02286 | Fabio Botelho Ph.D. | Fabio Botelho | A primal dual variational formulation and a multi-duality principle for
a non-linear model of plates | 21 pages, some more corrections implemented | null | null | null | math.OC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This article develops a new primal dual formulation for the Kirchhoff-Love
non-linear plate model. At first we establish a duality principle which
includes sufficient conditions of global optimality through the dual
formulation. At this point we highlight this first duality principle is
specially suitable for the case in which the membrane stress tensor is negative
definite. In a second step, from such a general principle, we develop a primal
dual variational formulation which also includes the corresponding sufficient
conditions for global optimality. The results are based on standard tools of
convex analysis and on a well known Toland result for D.C. optimization.
Finally, in the last section, we present a multi-duality principle and
qualitative relations between the critical points of the primal and dual
formulations. We formally prove there is no duality gap between such primal and
dual formulations in a local extremal context.
| [{'version': 'v1', 'created': 'Wed, 3 Apr 2019 16:00:42 GMT'}
{'version': 'v2', 'created': 'Thu, 18 Apr 2019 13:25:29 GMT'}
{'version': 'v3', 'created': 'Mon, 11 May 2020 21:28:24 GMT'}
{'version': 'v4', 'created': 'Wed, 13 May 2020 12:26:10 GMT'}] | 2020-05-14 | [array(['Botelho', 'Fabio', ''], dtype=object)] |
19,330 | math/0002035 | Robert Lazarsfeld | Jean-Pierre Demailly, Lawrence Ein and Robert Lazarsfeld | A Subadditivity Property of Multiplier Ideals | Dedication reinserted, typos fixed | null | null | null | math.AG math.CV | null | Given an effective Q-divisor D on a smooth complex variety, one can associate
to D its multiplier ideal sheaf J(D), which measures in a somewhat subtle way
the singularities of D. Because of their strong vanishing properties, these
ideals have come to play an increasingly important role in higher dimensional
geometry. We prove that for two effective Q-divisors D and E, one has the
"subadditivity" relation: J(D + E) \subseteq J(D) . J(E) . (We also establish
several natural variants, including the analogous statement for the analytic
multiplier ideals associated to plurisubharmonic functions.) As an application,
we give a new proof of a theorem of Fujita concerning the volume of a big
linear series on a projective variety. The first section of the paper contains
an overview of the construction and basic properties of multiplier ideals from
an algebro-geometric perspective, as well as a discussion of the relation
between some asymptotic algebraic constructions and their analytic
counterparts.
| [{'version': 'v1', 'created': 'Fri, 4 Feb 2000 18:10:50 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Apr 2000 17:09:29 GMT'}] | 2007-05-23 | [array(['Demailly', 'Jean-Pierre', ''], dtype=object)
array(['Ein', 'Lawrence', ''], dtype=object)
array(['Lazarsfeld', 'Robert', ''], dtype=object)] |
19,331 | 1703.10639 | Amir Sani | Francesco Lamperti, Andrea Roventini and Amir Sani | Agent-Based Model Calibration using Machine Learning Surrogates | 32 pages, 19 figures | null | null | null | q-fin.EC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Taking agent-based models (ABM) closer to the data is an open challenge. This
paper explicitly tackles parameter space exploration and calibration of ABMs
combining supervised machine-learning and intelligent sampling to build a
surrogate meta-model. The proposed approach provides a fast and accurate
approximation of model behaviour, dramatically reducing computation time. In
that, our machine-learning surrogate facilitates large scale explorations of
the parameter-space, while providing a powerful filter to gain insights into
the complex functioning of agent-based models. The algorithm introduced in this
paper merges model simulation and output analysis into a surrogate meta-model,
which substantially ease ABM calibration. We successfully apply our approach to
the Brock and Hommes (1998) asset pricing model and to the "Island" endogenous
growth model (Fagiolo and Dosi, 2003). Performance is evaluated against a
relatively large out-of-sample set of parameter combinations, while employing
different user-defined statistical tests for output analysis. The results
demonstrate the capacity of machine learning surrogates to facilitate fast and
precise exploration of agent-based models' behaviour over their often rugged
parameter spaces.
| [{'version': 'v1', 'created': 'Thu, 30 Mar 2017 18:57:56 GMT'}
{'version': 'v2', 'created': 'Thu, 6 Apr 2017 07:30:13 GMT'}] | 2017-04-07 | [array(['Lamperti', 'Francesco', ''], dtype=object)
array(['Roventini', 'Andrea', ''], dtype=object)
array(['Sani', 'Amir', ''], dtype=object)] |
19,332 | 1012.0244 | Roie Volkovich | Roie Volkovich and Uri Peskin | Transient Dynamics in Molecular Junctions: Coherent Bichromophoric
Molecular Electron Pumps | null | Physical Review B 83, 033403. 2011 | 10.1103/PhysRevB.83.033403 | null | quant-ph cond-mat.mes-hall | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The possibility of using single molecule junctions as electron pumps for
energy conversion and storage is considered. It is argued that the small
dimensions of these systems enable to make use of unique intra-molecular
quantum coherences in order to pump electrons between two leads and to overcome
relaxation processes which tend to suppress the pumping efficiency. In
particular, we demonstrate that a selective transient excitation of one
chromophore in a bi-chromophoric donor-bridge-acceptor molecular junction model
yields currents which transfer charge (electron and holes) unevenly to the two
leads in the absence of a bias potential. The utility of this mechanism for
charge pumping in steady state conditions is proposed.
| [{'version': 'v1', 'created': 'Wed, 1 Dec 2010 16:54:20 GMT'}] | 2015-05-20 | [array(['Volkovich', 'Roie', ''], dtype=object)
array(['Peskin', 'Uri', ''], dtype=object)] |
19,333 | cond-mat/0612245 | Molly De Raychaudhury | Molly De Raychaudhury, T. Saha-Dasgupta and D. D. Sarma | Theoretical study of doped-Tl$_{2}$Mn$_{2}$O$_{7}$ and
Tl$_{2}$Mn$_{2}$O$_{7}$ under pressure | Accepted for publication in PRB | null | 10.1103/PhysRevB.75.014443 | null | cond-mat.mtrl-sci cond-mat.str-el | null | Using first-principles density functional based calculations, we study the
effect of doping and pressure in manganese based pyrochlore
compound,Tl$_{2}$Mn$_{2}$O$_{7}$ that exhibits colossal magneto-resistive
behavior. The theoretical study is motivated by the counter-intuitive
experimental observation of suppression of ferromagnetic transition temperature
upon application of pressure and its enhancement upon substitution of Mn by
moderate amount of nonmagnetic Sb ion. We also attempt to resolve the issue
related to crystal structure changes that may occur upon application of
pressure.
| [{'version': 'v1', 'created': 'Mon, 11 Dec 2006 06:02:48 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Jan 2007 06:38:36 GMT'}] | 2009-11-11 | [array(['De Raychaudhury', 'Molly', ''], dtype=object)
array(['Saha-Dasgupta', 'T.', ''], dtype=object)
array(['Sarma', 'D. D.', ''], dtype=object)] |
19,334 | 1009.2493 | Christian Gogolin | Christian Gogolin, Markus P. Mueller, and Jens Eisert | Absence of Thermalization in Nonintegrable Systems | 5 pages, 2 figures, to appear in PRL, improved presentation of the
numerical findings, editorial changes | Phys. Rev. Lett. 106, 040401 (2011) | 10.1103/PhysRevLett.106.040401 | null | quant-ph cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We establish a link between unitary relaxation dynamics after a quench in
closed many-body systems and the entanglement in the energy eigenbasis. We find
that even if reduced states equilibrate, they can have memory on the initial
conditions even in certain models that are far from integrable. We show that in
such situations the equilibrium states are still described by a maximum entropy
or generalized Gibbs ensemble, regardless of whether a model is integrable or
not, thereby contributing to a recent debate. In addition, we discuss
individual aspects of the thermalization process, comment on the role of
Anderson localization, and collect and compare different notions of
integrability.
| [{'version': 'v1', 'created': 'Mon, 13 Sep 2010 19:55:21 GMT'}
{'version': 'v2', 'created': 'Thu, 6 Jan 2011 11:10:39 GMT'}] | 2011-01-25 | [array(['Gogolin', 'Christian', ''], dtype=object)
array(['Mueller', 'Markus P.', ''], dtype=object)
array(['Eisert', 'Jens', ''], dtype=object)] |
19,335 | 2012.14435 | Fumio Uchida | Kohei Kamada, Fumio Uchida, Jun'ichi Yokoyama | Baryon isocurvature constraints on the primordial hypermagnetic fields | 40 pages, 4 figures, 1 table | null | 10.1088/1475-7516/2021/04/034 | RESCEU-24/20 | astro-ph.CO hep-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | It has been pointed out that hypermagnetic helicity decay at the electroweak
symmetry breaking may have produced the observed baryon asymmetry of the
Universe through the chiral anomaly in the standard model of particle physics.
Although fully helical magnetic field that can adequately produce the observed
baryon asymmetry is not strong enough to explain the origin of the
intergalactic magnetic field inferred by the Fermi satellite, the mixture of
helical and nonhelical primordial magnetic fields may explain both baryogenesis
and the intergalactic magnetic fields simultaneously. We first show that such a
scenario is ruled out by the constraint on the amplitude of baryon isocurvature
perturbations produced by the primordial magnetic fields to avoid
overproduction of deuterium at the big bang nucleosynthesis. Then we show that
any attempt to explain the origin of intergalactic magnetic field by primordial
magnetogenesis before the electroweak symmetry breaking does not work due to
the above constraint irrespective of the helicity and baryogenesis mechanism.
| [{'version': 'v1', 'created': 'Mon, 28 Dec 2020 19:00:00 GMT'}] | 2021-04-21 | [array(['Kamada', 'Kohei', ''], dtype=object)
array(['Uchida', 'Fumio', ''], dtype=object)
array(['Yokoyama', "Jun'ichi", ''], dtype=object)] |
19,336 | 1002.3921 | Elke-Caroline Aschenauer | The HERMES Collaboration: A. Airapetian, et al | Leading-Order Determination of the Gluon Polarization from high-$p_T$
Hadron Electroproduction | null | JHEP 1008:130,2010 | 10.1007/JHEP08(2010)130 | DESY-10-021 | hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Longitudinal double-spin asymmetries of charged hadrons with high transverse
momentum $p_T$ have been measured in electroproduction using the \hermes\
detector at \hera. Processes involving gluons in the nucleon have been enhanced
relative to others by selecting hadrons with $p_T$ typically above 1 GeV. In
this kinematic domain the gluon polarization has been extracted in leading
order making use of the model embedded in the Monte Carlo Generator \Pythia\
6.2. The gluon polarization obtained from single inclusive hadrons in the $p_T$
range 1 GeV $< p_T <$ 2.5 GeV using a deuterium target is $\frac{\Delta
g}{g}(\langle x\rangle, \langle \mu^2\rangle)=0.049\pm 0.034 (stat)\pm 0.010
(sys\textrm{-}exp)^{+0.126}_{-0.099}(sys\textrm{-}models)$ at a scale
$\la\mu^2\ra=1.35~{\rm GeV}^2$ and $\langle x\rangle = 0.22$. For different
final states and kinematic domains, consistent values of \DGG\ have been found
within statistical uncertainties using hydrogen and deuterium targets.
| [{'version': 'v1', 'created': 'Sat, 20 Feb 2010 17:31:24 GMT'}
{'version': 'v2', 'created': 'Mon, 23 Aug 2010 12:26:48 GMT'}] | 2012-08-03 | [array(['The HERMES Collaboration', '', ''], dtype=object)
array(['Airapetian', 'A.', ''], dtype=object)] |
19,337 | 2302.06657 | Istv\'an Fazekas | Istv\'an Fazekas and Borb\'ala Fazekas and Michael Ochieng Suja | Convergence rate for the longest T-contaminated runs of heads. Paper
with detailed proofs | 20 pages, 4 figures | null | null | null | math.PR | http://creativecommons.org/licenses/by/4.0/ | We study the length of $T$-contaminated runs of heads in the well-known coin
tossing experiment. A $T$-contaminated run of heads is a sequence of
consecutive heads interrupted by $T$ tails. For $T=1$ and $T=2$ we find the
asymptotic distribution for the first hitting time of the $T$ contaminated run
of heads having length $m$; furthermore, we obtain a limit theorem for the
length of the longest $T$-contaminated head run. We prove that the rate of the
approximation of our accompanying distribution for the length of the longest
$T$-contaminated head run is considerably better than the previous ones. For
the proof we use a powerful lemma by Cs\'aki, F\"oldes and Koml\'os.
| [{'version': 'v1', 'created': 'Mon, 13 Feb 2023 19:41:04 GMT'}] | 2023-02-15 | [array(['Fazekas', 'István', ''], dtype=object)
array(['Fazekas', 'Borbála', ''], dtype=object)
array(['Suja', 'Michael Ochieng', ''], dtype=object)] |
19,338 | 1111.6751 | Pedro Sacramento | P. D. Sacramento, L. C. Fernandes Silva, G. S. Nunes, M. A. N. Araujo
and V. R. Vieira | Supercurrent induced domain wall motion | 10 pages, 8 figures | Physical Review B 83, 054403 (2011) | 10.1103/PhysRevB.83.054403 | null | cond-mat.supr-con | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the dynamics of a magnetic domain wall, inserted in, or juxtaposed
to, a conventional superconductor, via the passage of a spin polarized current
through a FSF junction. Solving the Landau-Lifshitz-Gilbert equation of motion
for the magnetic moments we calculate the velocity of the domain wall and
compare it with the case of a FNF junction. We find that in several regimes the
domain wall velocity is larger when it is driven by a supercurrent.
| [{'version': 'v1', 'created': 'Tue, 29 Nov 2011 10:20:52 GMT'}] | 2015-06-03 | [array(['Sacramento', 'P. D.', ''], dtype=object)
array(['Silva', 'L. C. Fernandes', ''], dtype=object)
array(['Nunes', 'G. S.', ''], dtype=object)
array(['Araujo', 'M. A. N.', ''], dtype=object)
array(['Vieira', 'V. R.', ''], dtype=object)] |
19,339 | 1912.12013 | Shaofei Du | Jiyong Chen, Shaofei Du, Cai Heng Li | Skew-morphisms of nonabelian characteristically simple groups | 18 Pages | null | null | null | math.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A skew-morphism of a finite group $G$ is a permutation $\s$ on $G$ fixing the
identity element, and for which there exists an integer function $\pi$ on $G$
such that $\s(xy)=\s(x)\s^{\pi(x)}(y)$ for all $x,y\in G$. It has been known
that given a skew-morphism $\s $ of $G$, the product of $\lg \s \rg$ with the
left regular representation of $G$ forms a permutation group on $G$, called the
skew-product group of $\s$. The skew-morphism was introduced as an algebraic
tool to investigate regular Cayley maps. In this paper, the skew-product groups
are characterized, for all skew-morphisms of finite nonabelian
characteristically simple groups (see Theorem 1.1) and correspondingly the
Cayley maps on these groups are characterized (see Theorem 1.5).
| [{'version': 'v1', 'created': 'Fri, 27 Dec 2019 07:38:44 GMT'}] | 2019-12-30 | [array(['Chen', 'Jiyong', ''], dtype=object)
array(['Du', 'Shaofei', ''], dtype=object)
array(['Li', 'Cai Heng', ''], dtype=object)] |
19,340 | 1303.6584 | Christophe Ley | Christophe Ley and Thomas Verdebout | Simple, asymptotically distribution-free, optimal tests for circular
reflective symmetry about a known median direction | 23 pages, 2 figures | null | null | null | stat.ME | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we propose optimal tests for circular reflective symmetry
about a fixed median direction. The distributions against which optimality is
achieved are the so-called k-sine-skewed distributions of Umbach and
Jammalamadaka (2009). We first show that sequences of k-sine-skewed models are
locally and asymptotically normal in the vicinity of reflective symmetry.
Following the Le Cam methodology, we then construct optimal (in the maximin
sense) parametric tests for reflective symmetry, which we render
semi-parametric by a studentization argument. These asymptotically
distribution-free tests happen to be uniformly optimal (under any reference
density) and are moreover of a very simple and intuitive form. They furthermore
exhibit nice small sample properties, as we show through a Monte Carlo
simulation study. Our new tests also allow us to re-visit the famous red wood
ants data set of Jander (1957). We further show that one of the proposed
parametric tests can as well serve as a test for uniformity against cardioid
alternatives; this test coincides with the famous circular Rayleigh (1919) test
for uniformity which is thus proved to be (also) optimal against cardioid
alternatives. Moreover, our choice of k-sine-skewed alternatives, which are the
circular analogues of the classical linear skew-symmetric distributions,
permits us a Fisher singularity analysis \`a la Hallin and Ley (2012) with the
result that only the prominent sine-skewed von Mises distribution suffers from
these inferential drawbacks. Finally, we conclude the paper by discussing the
unspecified location case.
| [{'version': 'v1', 'created': 'Tue, 26 Mar 2013 18:13:08 GMT'}] | 2013-03-27 | [array(['Ley', 'Christophe', ''], dtype=object)
array(['Verdebout', 'Thomas', ''], dtype=object)] |
19,341 | 2103.02967 | Antonio Bazco Nogueras | Hui Zhao, Antonio Bazco-Nogueras, Petros Elia | Wireless Coded Caching Can Overcome the Worst-User Bottleneck by
Exploiting Finite File Sizes | null | null | null | null | cs.IT math.IT | http://creativecommons.org/licenses/by-nc-nd/4.0/ | We address the worst-user bottleneck of wireless coded caching, which is
known to severely diminish cache-aided multicasting gains due to the
fundamental worst-channel limitation of multicasting transmission. We consider
the quasi-static Rayleigh fading Broadcast Channel, for which we first show
that the effective coded caching gain of the XOR-based standard coded-caching
scheme completely vanishes in the low-SNR regime. Then, we reveal that this
collapse is not intrinsic to coded caching. We do so by presenting a novel
scheme that can fully recover the coded caching gains by capitalizing on one
aspect that has to date remained unexploited: the shared side information
brought about by the effectively unavoidable file-size constraint. As a
consequence, the worst-user effect is dramatically ameliorated, as it is
substituted by a much more subtle worst-group-of-users effect, where the
suggested grouping is fixed, and it is decided before the channel or the
demands are known. In some cases, the theoretical gains are completely
recovered, and this is done without any user selection technique. We analyze
the achievable rate performance of the proposed scheme and derive insightful
performance approximations which prove to be very precise.
| [{'version': 'v1', 'created': 'Thu, 4 Mar 2021 11:41:32 GMT'}] | 2021-03-05 | [array(['Zhao', 'Hui', ''], dtype=object)
array(['Bazco-Nogueras', 'Antonio', ''], dtype=object)
array(['Elia', 'Petros', ''], dtype=object)] |
19,342 | 2304.05450 | Bastien Grosso | Bastien F. Grosso, Daniel W. Davies, Bonan Zhu, Aron Walsh, David O.
Scanlon | Accessible Chemical Space for Metal Nitride Perovskites | null | null | null | null | cond-mat.mtrl-sci | http://creativecommons.org/licenses/by-nc-nd/4.0/ | Building on the extensive exploration of metal oxide and metal halide
perovskites, metal nitride perovskites represent a largely unexplored class of
materials. We report a multi-tier computational screening of this chemical
space. From a pool of 3660 ABN$_3$ compositions covering I-VIII, II-VII, III-VI
and IV-V oxidation state combinations, 279 are predicted to be chemically
feasible. The ground-state structures of the 25 most promising candidate
compositions were explored through enumeration over octahedral tilt systems and
global optimisation. We predict 12 dynamically and thermodynamically stable
nitride perovskite materials, including YMoN$_3$, YWN$_3$, ZrTaN$_3$, and
LaMoN$_3$. These feature significant electric polarisation and low predicted
switching electric field, showing similarities with metal oxide perovskites and
making them attractive for ferroelectric memory devices
| [{'version': 'v1', 'created': 'Tue, 11 Apr 2023 18:47:15 GMT'}] | 2023-04-13 | [array(['Grosso', 'Bastien F.', ''], dtype=object)
array(['Davies', 'Daniel W.', ''], dtype=object)
array(['Zhu', 'Bonan', ''], dtype=object)
array(['Walsh', 'Aron', ''], dtype=object)
array(['Scanlon', 'David O.', ''], dtype=object)] |
19,343 | 1505.06716 | Jakob Bj\"ornberg | J. E. Bj\"ornberg | Large cycles in random permutations related to the Heisenberg model | 11 pages | Electron. Commun. Probab., Volume 20, 2015 | 10.1214/ECP.v20-4328 | null | math.PR math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the weighted version of the interchange process where a permutation
receives weight $\theta^{\#\mathrm{cycles}}$. For $\theta=2$ this is T\'oth's
representation of the quantum Heisenberg ferromagnet on the complete graph. We
prove, for $\theta>1$, that large cycles appear at `low temperature'.
| [{'version': 'v1', 'created': 'Mon, 25 May 2015 18:57:06 GMT'}
{'version': 'v2', 'created': 'Sat, 6 Jun 2015 10:23:25 GMT'}
{'version': 'v3', 'created': 'Sun, 5 Jul 2015 19:23:19 GMT'}] | 2019-12-16 | [array(['Björnberg', 'J. E.', ''], dtype=object)] |
19,344 | 1503.02584 | Keith Bechtol | The DES Collaboration, K. Bechtol, A. Drlica-Wagner, E. Balbinot, A.
Pieres, J. D. Simon, B. Yanny, B. Santiago, R. H. Wechsler, J. Frieman, A. R.
Walker, P. Williams, E. Rozo, E. S. Rykoff, A. Queiroz, E. Luque, A.
Benoit-Levy, D. Tucker, I. Sevilla, R. A. Gruendl, L. N. da Costa, A. Fausti
Neto, M. A. G. Maia, T. Abbott, S. Allam, R. Armstrong, A. H. Bauer, G. M.
Bernstein, R. A. Bernstein, E. Bertin, D. Brooks, E. Buckley-Geer, D. L.
Burke, A. Carnero Rosell, F. J. Castander, R. Covarrubias, C. B. D'Andrea, D.
L. DePoy, S. Desai, H. T. Diehl, T. F. Eifler, J. Estrada, A. E. Evrard, E.
Fernandez, D. A. Finley, B. Flaugher, E. Gaztanaga, D. Gerdes, L. Girardi, M.
Gladders, D. Gruen, G. Gutierrez, J. Hao, K. Honscheid, B. Jain, D. James, S.
Kent, R. Kron, K. Kuehn, N. Kuropatkin, O. Lahav, T. S. Li, H. Lin, M.
Makler, M. March, J. Marshall, P. Martini, K. W. Merritt, C. Miller, R.
Miquel, J. Mohr, E. Neilsen, R. Nichol, B. Nord, R. Ogando, J. Peoples, D.
Petravick, A. A. Plazas, A. K. Romer, A. Roodman, M. Sako, E. Sanchez, V.
Scarpine, M. Schubnell, R. C. Smith, M. Soares-Santos, F. Sobreira, E.
Suchyta, M. E. C. Swanson, G. Tarle, J. Thaler, D. Thomas, W. Wester, J.
Zuntz | Eight New Milky Way Companions Discovered in First-Year Dark Energy
Survey Data | 33 pages, 12 figures, 3 tables. Accepted for publication in ApJ.
Readers may be interested in the concurrent work by Koposov, Belokurov,
Torrealba, & Evans (http://arxiv.org/abs/1503.02079). Indirect dark matter
search results are presented in Drlica-Wagner, Albert, Bechtol, Wood,
Strigari, et al. (The LAT and DES Collaborations,
http://arxiv.org/abs/1503.02632) | null | 10.1088/0004-637X/807/1/50 | null | astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report the discovery of eight new Milky Way companions in ~1,800 deg^2 of
optical imaging data collected during the first year of the Dark Energy Survey
(DES). Each system is identified as a statistically significant over-density of
individual stars consistent with the expected isochrone and luminosity function
of an old and metal-poor stellar population. The objects span a wide range of
absolute magnitudes (M_V from -2.2 mag to -7.4 mag), physical sizes (10 pc to
170 pc), and heliocentric distances (30 kpc to 330 kpc). Based on the low
surface brightnesses, large physical sizes, and/or large Galactocentric
distances of these objects, several are likely to be new ultra-faint satellite
galaxies of the Milky Way and/or Magellanic Clouds. We introduce a
likelihood-based algorithm to search for and characterize stellar
over-densities, as well as identify stars with high satellite membership
probabilities. We also present completeness estimates for detecting ultra-faint
galaxies of varying luminosities, sizes, and heliocentric distances in the
first-year DES data.
| [{'version': 'v1', 'created': 'Mon, 9 Mar 2015 17:54:00 GMT'}
{'version': 'v2', 'created': 'Thu, 28 May 2015 22:44:22 GMT'}] | 2015-09-02 | [array(['The DES Collaboration', '', ''], dtype=object)
array(['Bechtol', 'K.', ''], dtype=object)
array(['Drlica-Wagner', 'A.', ''], dtype=object)
array(['Balbinot', 'E.', ''], dtype=object)
array(['Pieres', 'A.', ''], dtype=object)
array(['Simon', 'J. D.', ''], dtype=object)
array(['Yanny', 'B.', ''], dtype=object)
array(['Santiago', 'B.', ''], dtype=object)
array(['Wechsler', 'R. H.', ''], dtype=object)
array(['Frieman', 'J.', ''], dtype=object)
array(['Walker', 'A. R.', ''], dtype=object)
array(['Williams', 'P.', ''], dtype=object)
array(['Rozo', 'E.', ''], dtype=object)
array(['Rykoff', 'E. S.', ''], dtype=object)
array(['Queiroz', 'A.', ''], dtype=object)
array(['Luque', 'E.', ''], dtype=object)
array(['Benoit-Levy', 'A.', ''], dtype=object)
array(['Tucker', 'D.', ''], dtype=object)
array(['Sevilla', 'I.', ''], dtype=object)
array(['Gruendl', 'R. A.', ''], dtype=object)
array(['da Costa', 'L. N.', ''], dtype=object)
array(['Neto', 'A. Fausti', ''], dtype=object)
array(['Maia', 'M. A. G.', ''], dtype=object)
array(['Abbott', 'T.', ''], dtype=object)
array(['Allam', 'S.', ''], dtype=object)
array(['Armstrong', 'R.', ''], dtype=object)
array(['Bauer', 'A. H.', ''], dtype=object)
array(['Bernstein', 'G. M.', ''], dtype=object)
array(['Bernstein', 'R. A.', ''], dtype=object)
array(['Bertin', 'E.', ''], dtype=object)
array(['Brooks', 'D.', ''], dtype=object)
array(['Buckley-Geer', 'E.', ''], dtype=object)
array(['Burke', 'D. L.', ''], dtype=object)
array(['Rosell', 'A. Carnero', ''], dtype=object)
array(['Castander', 'F. J.', ''], dtype=object)
array(['Covarrubias', 'R.', ''], dtype=object)
array(["D'Andrea", 'C. B.', ''], dtype=object)
array(['DePoy', 'D. L.', ''], dtype=object)
array(['Desai', 'S.', ''], dtype=object)
array(['Diehl', 'H. T.', ''], dtype=object)
array(['Eifler', 'T. F.', ''], dtype=object)
array(['Estrada', 'J.', ''], dtype=object)
array(['Evrard', 'A. E.', ''], dtype=object)
array(['Fernandez', 'E.', ''], dtype=object)
array(['Finley', 'D. A.', ''], dtype=object)
array(['Flaugher', 'B.', ''], dtype=object)
array(['Gaztanaga', 'E.', ''], dtype=object)
array(['Gerdes', 'D.', ''], dtype=object)
array(['Girardi', 'L.', ''], dtype=object)
array(['Gladders', 'M.', ''], dtype=object)
array(['Gruen', 'D.', ''], dtype=object)
array(['Gutierrez', 'G.', ''], dtype=object)
array(['Hao', 'J.', ''], dtype=object)
array(['Honscheid', 'K.', ''], dtype=object)
array(['Jain', 'B.', ''], dtype=object)
array(['James', 'D.', ''], dtype=object)
array(['Kent', 'S.', ''], dtype=object)
array(['Kron', 'R.', ''], dtype=object)
array(['Kuehn', 'K.', ''], dtype=object)
array(['Kuropatkin', 'N.', ''], dtype=object)
array(['Lahav', 'O.', ''], dtype=object)
array(['Li', 'T. S.', ''], dtype=object)
array(['Lin', 'H.', ''], dtype=object)
array(['Makler', 'M.', ''], dtype=object)
array(['March', 'M.', ''], dtype=object)
array(['Marshall', 'J.', ''], dtype=object)
array(['Martini', 'P.', ''], dtype=object)
array(['Merritt', 'K. W.', ''], dtype=object)
array(['Miller', 'C.', ''], dtype=object)
array(['Miquel', 'R.', ''], dtype=object)
array(['Mohr', 'J.', ''], dtype=object)
array(['Neilsen', 'E.', ''], dtype=object)
array(['Nichol', 'R.', ''], dtype=object)
array(['Nord', 'B.', ''], dtype=object)
array(['Ogando', 'R.', ''], dtype=object)
array(['Peoples', 'J.', ''], dtype=object)
array(['Petravick', 'D.', ''], dtype=object)
array(['Plazas', 'A. A.', ''], dtype=object)
array(['Romer', 'A. K.', ''], dtype=object)
array(['Roodman', 'A.', ''], dtype=object)
array(['Sako', 'M.', ''], dtype=object)
array(['Sanchez', 'E.', ''], dtype=object)
array(['Scarpine', 'V.', ''], dtype=object)
array(['Schubnell', 'M.', ''], dtype=object)
array(['Smith', 'R. C.', ''], dtype=object)
array(['Soares-Santos', 'M.', ''], dtype=object)
array(['Sobreira', 'F.', ''], dtype=object)
array(['Suchyta', 'E.', ''], dtype=object)
array(['Swanson', 'M. E. C.', ''], dtype=object)
array(['Tarle', 'G.', ''], dtype=object)
array(['Thaler', 'J.', ''], dtype=object)
array(['Thomas', 'D.', ''], dtype=object)
array(['Wester', 'W.', ''], dtype=object)
array(['Zuntz', 'J.', ''], dtype=object)] |
19,345 | 0911.0948 | Achilles Tertikas | Adimurthi, Stathis Filippas, Achilles Tertikas | On the best constant of Hardy-Sobolev Inequalities | null | null | null | null | math.AP math.FA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We obtain the sharp constant for the Hardy-Sobolev inequality involving the
distance to the origin. This inequality is equivalent to a limiting
Caffarelli-Kohn-Nirenberg inequality. In three dimensions, in certain cases the
sharp constant coincides with the best Sobolev constant.
| [{'version': 'v1', 'created': 'Wed, 4 Nov 2009 22:42:29 GMT'}] | 2009-11-06 | [array(['Adimurthi', '', ''], dtype=object)
array(['Filippas', 'Stathis', ''], dtype=object)
array(['Tertikas', 'Achilles', ''], dtype=object)] |
19,346 | 1603.08957 | Elmo Tempel | E. Tempel, R. S. Stoica, R. Kipper, E. Saar | Bisous model - detecting filamentary patterns in point processes | 12 pages, 6 figures, accepted by Astronomy and Computing | null | null | null | astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The cosmic web is a highly complex geometrical pattern, with galaxy clusters
at the intersection of filaments and filaments at the intersection of walls.
Identifying and describing the filamentary network is not a trivial task due to
the overwhelming complexity of the structure, its connectivity and the
intrinsic hierarchical nature. To detect and quantify galactic filaments we use
the Bisous model, which is a marked point process built to model
multi-dimensional patterns. The Bisous filament finder works directly with the
galaxy distribution data and the model intrinsically takes into account the
connectivity of the filamentary network. The Bisous model generates the visit
map (the probability to find a filament at a given point) together with the
filament orientation field. Using these two fields, we can extract filament
spines from the data. Together with this paper we publish the computer code for
the Bisous model that is made available in GitHub. The Bisous filament finder
has been successfully used in several cosmological applications and further
development of the model will allow to detect the filamentary network also in
photometric redshift surveys, using the full redshift posterior. We also want
to encourage the astro-statistical community to use the model and to connect it
with all other existing methods for filamentary pattern detection and
characterisation.
| [{'version': 'v1', 'created': 'Tue, 29 Mar 2016 20:39:49 GMT'}] | 2016-03-31 | [array(['Tempel', 'E.', ''], dtype=object)
array(['Stoica', 'R. S.', ''], dtype=object)
array(['Kipper', 'R.', ''], dtype=object)
array(['Saar', 'E.', ''], dtype=object)] |
19,347 | cond-mat/9601066 | Yurii Barash | Yu.S.Barash, and A.A.Svidzinsky (P.N.Lebedev Physics Institute,
Moscow) | On the low temperature properties and specific anisotropy of pure
anisotropically paired superconductors | 20 pages | null | 10.1103/PhysRevB.53.15254 | null | cond-mat | null | Dependences of low temperature behavior and anisotropy of various physical
quantities for pure unconventional superconductors upon a particular form of
momentum direction dependence for the superconducting order parameter (within
the framework of the same symmetry type of superconducting pairing) are
considered. A special attention is drawn to the possibility of different
multiplicities of the nodes of the order parameter under their fixed positions
on the Fermi surface, which are governed by symmetry. The problem of an
unambiguous identification of a type of superconducting pairing on the basis of
corresponding experimental results is discussed. Quasiparticle density of
states at low energy for both homogeneous and mixed states, the low temperature
dependences of the specific heat, penetration depth and thermal conductivity,
the I-V curves of SS and NS tunnel junctions at low voltages are examined. A
specific anisotropy of the boundary conditions for unconventional
superconducting order parameter near $T_c$ for the case of specular reflection
from the boundary is also investigated.
| [{'version': 'v1', 'created': 'Wed, 17 Jan 1996 15:29:11 GMT'}] | 2009-10-28 | [array(['Barash', 'Yu. S.', '', 'P.N.Lebedev Physics Institute,\n Moscow'],
dtype=object)
array(['Svidzinsky', 'A. A.', '',
'P.N.Lebedev Physics Institute,\n Moscow'], dtype=object)] |
19,348 | 1006.0663 | Gaurav Khanna | Rakesh Ginjupalli and Gaurav Khanna | High-Precision Numerical Simulations of Rotating Black Holes Accelerated
by CUDA | 6 pages, 1 figure, 1 table, Accepted for publication in the
International Conference on High Performance Computing Systems (HPCS 2010) | null | null | null | physics.comp-ph gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hardware accelerators (such as Nvidia's CUDA GPUs) have tremendous promise
for computational science, because they can deliver large gains in performance
at relatively low cost. In this work, we focus on the use of Nvidia's Tesla GPU
for high-precision (double, quadruple and octal precision) numerical
simulations in the area of black hole physics -- more specifically, solving a
partial-differential-equation using finite-differencing. We describe our
approach in detail and present the final performance results as compared with a
single-core desktop processor and also the Cell BE. We obtain mixed results --
order-of-magnitude gains in overall performance in some cases and negligible
gains in others.
| [{'version': 'v1', 'created': 'Thu, 3 Jun 2010 14:30:31 GMT'}] | 2010-06-04 | [array(['Ginjupalli', 'Rakesh', ''], dtype=object)
array(['Khanna', 'Gaurav', ''], dtype=object)] |
19,349 | 1404.3000 | Alan Stapledon | Eric Katz, Alan Stapledon | Tropical geometry, the motivic nearby fiber and limit mixed Hodge
numbers of hypersurfaces | 40 pages | Res. Math. Sci. 3 (2014), 1-36 | null | null | math.AG math.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The motivic nearby fiber is an invariant obtained from degenerating a complex
variety over a disc. It specializes to the Euler characteristic of the original
variety but also contains information on the variation of Hodge structure
associated to the degeneration which is encoded as a limit mixed Hodge
structure. However, this invariant is difficult to compute in practice. Using
the techniques of tropical geometry we present a new formula for the motivic
nearby fiber. Moreover, since there is a range of available software
implementing the main algorithms in tropical geometry, our formula can be
computed in practice. We specialize to the case of families of sch\"{o}n
complex hypersurfaces of tori where we provide explicit formulas describing the
action of the unipotent part of monodromy on the graded pieces (with respect to
the Deligne weight filtration) of the cohomology with compact supports. These
families are described combinatorially by a polyhedral subdivision of the
associated Newton polytope. We develop new mixed Hodge theory-inspired
combinatorial invariants of such subdivisions, among them the `refined limit
mixed $h^*$-polynomial'. These invariants are related to Stanley's
combinatorial study of subdivisions: in a companion combinatorial paper whose
results are applied here, we situate our invariants in Stanley's theory where
they become multi-variable extensions of his invariants. Our results generalize
work of Danilov and Khovanski{\u\i} and Batyrev and Borisov on the Hodge
numbers of hypersurfaces. We also present analogous formulas describing the
action of the unipotent part of monodromy on the intersection cohomology groups
of a family of sch\"on hypersurfaces of a projective toric variety.
| [{'version': 'v1', 'created': 'Fri, 11 Apr 2014 04:51:25 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Dec 2014 00:19:11 GMT'}] | 2021-10-05 | [array(['Katz', 'Eric', ''], dtype=object)
array(['Stapledon', 'Alan', ''], dtype=object)] |
19,350 | math/0204202 | Vladimir Pestov | Vladimir Pestov | Remarks on actions on compacta by some infinite-dimensional groups | 19 pages, LaTeX with World Scientific macros, to appear in Proc.
Conf. on Infinite-Dimensional Lie Groups in Geometry and Representation
Theory (Howard Univ., Washington, D.C., August 2000) | in: Infinite-Dimensional Lie Groups in Geometry and Representation
Theory (Washington, D.C., 2000), World Sci. Publishing, River Edge, NJ, 2002,
pp. 145-163. | null | null | math.DS | null | We discuss some techniques related to equivariant compactifications of
uniform spaces and amenability of topological groups. In particular, we give a
new proof of a recent result by Glasner and Weiss describing the universal
minimal flow of the infinite symmetric group ${\mathfrak S}_\infty$ with the
standard Polish topology, and extend Bekka's concept of an amenable
representation, enabling one to deduce non-amenability of the Banach--Lie
groups $\GL(L_p)$ and $\GL(\ell_p)$, $1\leq p <\infty$.
| [{'version': 'v1', 'created': 'Tue, 16 Apr 2002 09:26:24 GMT'}
{'version': 'v2', 'created': 'Tue, 23 Apr 2002 22:53:11 GMT'}] | 2007-09-03 | [array(['Pestov', 'Vladimir', ''], dtype=object)] |
19,351 | 2104.08428 | Kaiqi Fu | Kaiqi Fu and Jones Lin and Dengfeng Ke and Yanlu Xie and Jinsong Zhang
and Binghuai Lin | A Full Text-Dependent End to End Mispronunciation Detection and
Diagnosis with Easy Data Augmentation Techniques | Submitted to INTERSPEECH2021 | null | null | null | cs.CL | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, end-to-end mispronunciation detection and diagnosis (MD&D) systems
has become a popular alternative to greatly simplify the model-building process
of conventional hybrid DNN-HMM systems by representing complicated modules with
a single deep network architecture. In this paper, in order to utilize the
prior text in the end-to-end structure, we present a novel text-dependent model
which is difference with sed-mdd, the model achieves a fully end-to-end system
by aligning the audio with the phoneme sequences of the prior text inside the
model through the attention mechanism. Moreover, the prior text as input will
be a problem of imbalance between positive and negative samples in the phoneme
sequence. To alleviate this problem, we propose three simple data augmentation
methods, which effectively improve the ability of model to capture
mispronounced phonemes. We conduct experiments on L2-ARCTIC, and our best
performance improved from 49.29% to 56.08% in F-measure metric compared to the
CNN-RNN-CTC model.
| [{'version': 'v1', 'created': 'Sat, 17 Apr 2021 03:11:41 GMT'}] | 2021-04-20 | [array(['Fu', 'Kaiqi', ''], dtype=object)
array(['Lin', 'Jones', ''], dtype=object)
array(['Ke', 'Dengfeng', ''], dtype=object)
array(['Xie', 'Yanlu', ''], dtype=object)
array(['Zhang', 'Jinsong', ''], dtype=object)
array(['Lin', 'Binghuai', ''], dtype=object)] |
19,352 | hep-ph/9411292 | Ed Yao | York-Peng Yao | ${1\over m_b}$ and ${1\over m_t}$ Expansion of the Weak Mixing Matrix | A set of references has been added to ealier related work | Phys.Rev.D51:5240-5244,1995 | 10.1103/PhysRevD.51.5240 | UM-TH-94-33 | hep-ph | null | We perform a $1/m_b$ and $1/m_t$ expansion of the Cabibbo-Kobayashi- Maskawa
mixing matrix. Data suggest that the dominant parts of the Yukawa couplings are
factorizable into sets of numbers $\vert r>$, $\vert s>$, and $\vert s'>$,
associated, respectively, with the left-handed doublets, the right-handed up
singlets, and the right- handed down singlets. The first order expansion is
consistent with Wolfenstein parameterization, which is an expansion in $sin
\theta _c$ to third order. The mixing matrix elements in the present approach
are partitioned into factors determined by the relative orientations of $\vert
r>$, $\vert s>$, and $\vert s'>$ and the dynamics provided by the subdominant
mass matrices. A short discussion is given of some experimental support and a
generalized Fritzsch model is used to contrast our approach.
| [{'version': 'v1', 'created': 'Mon, 14 Nov 1994 19:26:31 GMT'}
{'version': 'v2', 'created': 'Sun, 20 Nov 1994 20:01:47 GMT'}] | 2010-11-01 | [array(['Yao', 'York-Peng', ''], dtype=object)] |
19,353 | 1701.05619 | Yani Zhao | Yani Zhao, Mateusz Chwastyk and Marek Cieplak | Topological transformations in proteins: effects of heating and
proximity of an interface | 7 figures | Scientific Reports 7, 39851 (2017) | null | null | q-bio.BM | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using a structure-based coarse-grained model of proteins, we study the
mechanism of unfolding of knotted proteins through heating. We find that the
dominant mechanisms of unfolding depend on the temperature applied and are
generally distinct from those identified for folding at its optimal
temperature. In particular, for shallowly knotted proteins, folding usually
involves formation of two loops whereas unfolding through high-temperature
heating is dominated by untying of single loops. Untying the knots is found to
generally precede unfolding unless the protein is deeply knotted and the
heating temperature exceeds a threshold value. We then use a phenomenological
model of the air-water interface to show that such an interface can untie
shallow knots, but it can also make knots in proteins that are natively
unknotted.
| [{'version': 'v1', 'created': 'Thu, 19 Jan 2017 22:05:03 GMT'}] | 2017-01-23 | [array(['Zhao', 'Yani', ''], dtype=object)
array(['Chwastyk', 'Mateusz', ''], dtype=object)
array(['Cieplak', 'Marek', ''], dtype=object)] |
19,354 | 1610.00164 | Alina Bucur | Alina Bucur, Edgar Costa, Chantal David, Jo\~ao Guerreiro and David
Lowry-Duda | Traces, high powers and one level density for families of curves over
finite fields | 24 pages | null | null | null | math.NT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The zeta function of a curve $C$ over a finite field may be expressed in
terms of the characteristic polynomial of a unitary matrix $\Theta_C$.
We develop and present a new technique to compute the expected value of
$\mathrm{Tr}(\Theta_C^n)$ for various moduli spaces of curves of genus $g$ over
a fixed finite field in the limit as $g$ is large, generalizing and extending
the work of Rudnick and Chinis.
This is achieved by using function field zeta functions, explicit formulae,
and the densities of prime polynomials with prescribed ramification types at
certain places as given by Bucur, David, Feigon, Kaplan, Lal\'in and Wood
[BDF$^+$16] and by Zhao.
We extend [BDF$^+$16] by describing explicit dependence on the place and give
an explicit proof of the Lindel\"{o}f bound for function field Dirichlet
$L$-functions $L(1/2 + it, \chi)$.
As applications, we compute the one-level density for hyperelliptic curves,
cyclic $\ell$-covers, and cubic non-Galois covers.
| [{'version': 'v1', 'created': 'Sat, 1 Oct 2016 18:15:06 GMT'}] | 2016-10-04 | [array(['Bucur', 'Alina', ''], dtype=object)
array(['Costa', 'Edgar', ''], dtype=object)
array(['David', 'Chantal', ''], dtype=object)
array(['Guerreiro', 'João', ''], dtype=object)
array(['Lowry-Duda', 'David', ''], dtype=object)] |
19,355 | math-ph/0605032 | Alice Barbara Tumpach | Alice Barbara Tumpach | Infinite-dimensional hyperkaehler manifolds associated with
Hermitian-symmetric affine coadjoint orbits | 20 pages, 1 figure | null | null | null | math-ph math.MP math.SG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is devoted to the construction of a hyperkaehler structure on the
complexification of any Hermitian-symmetric affine coadjoint orbit O of a
semi-simple L*-group of compact type, which is compatible with the complex
symplectic form of Kirillov-Kostant-Souriau and restricts to the Kaehler
structure of O. By the identification of the complexification of O with the
cotangent space of O induced by Mostow's Decomposition Theorem, this leads to
the existence of a hyperkaehler structure on the cotangent space of O
compatible with Liouville's symplectic form and whose restriction to the zero
section is the Kaehler structure of O. Explicit formulas of the metric in terms
of the complexified orbit and of the cotangent space are given.
| [{'version': 'v1', 'created': 'Tue, 9 May 2006 13:24:09 GMT'}
{'version': 'v2', 'created': 'Tue, 15 Jul 2008 13:30:27 GMT'}] | 2008-07-15 | [array(['Tumpach', 'Alice Barbara', ''], dtype=object)] |
19,356 | nucl-ex/9906009 | Birger B. Back | Birger B. Back | Fission Characteristics of Heavy Nuclei: Statics and Dynamics | 11 pages, 7 figures, Symp. on "Nuclear Shapes and Motions" in honor
of Ray Nix., Santa Fe, NM, October 25-27, 1998 | Heavy Ion Phys.10:209-220,1999 | null | null | nucl-ex | null | This paper presents a selective historical perspective of fission research
over the last thirty-five years while Ray Nix has made central contributions to
the field. The emphasis is placed on early studies of the shell stabilized
secondary minimum in the static fission barrier and on the dynamic properties
of fission of hot nuclei, which have recently been the focus of intense study.
| [{'version': 'v1', 'created': 'Mon, 14 Jun 1999 15:27:33 GMT'}] | 2011-04-15 | [array(['Back', 'Birger B.', ''], dtype=object)] |
19,357 | 2211.06239 | Bradley Eck | Bradley Eck and Duygu Kabakci-Zorlu and Yan Chen and France Savard and
Xiaowei Bao | A monitoring framework for deployed machine learning models with supply
chain examples | 8 pages, 9 figures, IEEE Big Data 2022 | null | null | null | cs.LG stat.AP | http://creativecommons.org/licenses/by/4.0/ | Actively monitoring machine learning models during production operations
helps ensure prediction quality and detection and remediation of unexpected or
undesired conditions. Monitoring models already deployed in big data
environments brings the additional challenges of adding monitoring in parallel
to the existing modelling workflow and controlling resource requirements. In
this paper, we describe (1) a framework for monitoring machine learning models;
and, (2) its implementation for a big data supply chain application. We use our
implementation to study drift in model features, predictions, and performance
on three real data sets. We compare hypothesis test and information theoretic
approaches to drift detection in features and predictions using the
Kolmogorov-Smirnov distance and Bhattacharyya coefficient. Results showed that
model performance was stable over the evaluation period. Features and
predictions showed statistically significant drifts; however, these drifts were
not linked to changes in model performance during the time of our study.
| [{'version': 'v1', 'created': 'Fri, 11 Nov 2022 14:31:38 GMT'}] | 2022-11-14 | [array(['Eck', 'Bradley', ''], dtype=object)
array(['Kabakci-Zorlu', 'Duygu', ''], dtype=object)
array(['Chen', 'Yan', ''], dtype=object)
array(['Savard', 'France', ''], dtype=object)
array(['Bao', 'Xiaowei', ''], dtype=object)] |
19,358 | 1711.07564 | Chaoxu Zhou | Jose Blanchet, Donald Goldfarb, Garud Iyengar, Fengpei Li, Chaoxu Zhou | Unbiased Simulation for Optimizing Stochastic Function Compositions | null | null | null | null | math.OC stat.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we introduce an unbiased gradient simulation algorithms for
solving convex optimization problem with stochastic function compositions. We
show that the unbiased gradient generated from the algorithm has finite
variance and finite expected computation cost. We then combined the unbiased
gradient simulation with two variance reduced algorithms (namely SVRG and SCSG)
and showed that the proposed optimization algorithms based on unbiased gradient
simulations exhibit satisfactory convergence properties. Specifically, in the
SVRG case, the algorithm with simulated gradient can be shown to converge
linearly to optima in expectation and almost surely under strong convexity.
Finally, for the numerical experiment,we applied the algorithms to two
important cases of stochastic function compositions optimization: maximizing
the Cox's partial likelihood model and training conditional random fields.
| [{'version': 'v1', 'created': 'Mon, 20 Nov 2017 21:58:01 GMT'}] | 2017-11-22 | [array(['Blanchet', 'Jose', ''], dtype=object)
array(['Goldfarb', 'Donald', ''], dtype=object)
array(['Iyengar', 'Garud', ''], dtype=object)
array(['Li', 'Fengpei', ''], dtype=object)
array(['Zhou', 'Chaoxu', ''], dtype=object)] |
19,359 | hep-ph/0502086 | Jeff Forshaw | J.R. Forshaw, A. Kyrieleis, M.H. Seymour | Gaps between Jets in the High Energy Limit | 29 pages, 9 figures, minor corrections to text and improved figures | JHEP 0506:034,2005 | 10.1088/1126-6708/2005/06/034 | null | hep-ph | null | We use perturbative QCD to calculate the parton level cross section for the
production of two jets that are far apart in rapidity, subject to a limitation
on the total transverse momentum Q0 in the interjet region. We specifically
address the question of how to combine the approach which sums all leading
logarithms in Q/Q0 (where Q is the jet transverse momentum) with the BFKL
approach, in which leading logarithms of the scattering energy are summed. This
paper constitutes progress towards the simultaneous summation of all important
logarithms. Using an "all orders" matching, we are able to obtain results for
the cross section which correctly reproduce the two approaches in the
appropriate limits.
| [{'version': 'v1', 'created': 'Wed, 9 Feb 2005 14:37:22 GMT'}
{'version': 'v2', 'created': 'Fri, 10 Jun 2005 17:31:16 GMT'}] | 2010-03-12 | [array(['Forshaw', 'J. R.', ''], dtype=object)
array(['Kyrieleis', 'A.', ''], dtype=object)
array(['Seymour', 'M. H.', ''], dtype=object)] |
19,360 | 2302.03449 | Florinda Capone Prof. | Florinda Capone and Roberta De Luca and Isabella Torcicollo | Turing patterns in a Leslie-Gower predator prey model | null | null | null | null | q-bio.PE math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A reaction-diffusion Leslie-Gower predator-prey model, incorporating the fear
effect and prey refuge, with Beddington-DeAngelis functional response, is
introduced. A qualitative analysis of the solutions of the model and the
stability analysis of the coexistence equilibrium, are performed. Sufficient
conditions guaranteeing the occurrence of Turing instability have been
determined either in the case of self-diffusion or in the case of
cross-diffusion. Different types of Turing patterns, representing a spatial
redistribution of population in the environment, emerge for different values of
the model parameters.
| [{'version': 'v1', 'created': 'Tue, 7 Feb 2023 13:06:15 GMT'}] | 2023-02-08 | [array(['Capone', 'Florinda', ''], dtype=object)
array(['De Luca', 'Roberta', ''], dtype=object)
array(['Torcicollo', 'Isabella', ''], dtype=object)] |
19,361 | 2304.01821 | Emil Njor | Emil Njor, Jan Madsen, Xenofon Fafoutis | Data Aware Neural Architecture Search | Accepted as a full paper by the TinyML Research Symposium 2023 | null | null | null | cs.NE | http://creativecommons.org/licenses/by/4.0/ | Neural Architecture Search (NAS) is a popular tool for automatically
generating Neural Network (NN) architectures. In early NAS works, these tools
typically optimized NN architectures for a single metric, such as accuracy.
However, in the case of resource constrained Machine Learning, one single
metric is not enough to evaluate a NN architecture. For example, a NN model
achieving a high accuracy is not useful if it does not fit inside the flash
memory of a given system. Therefore, recent works on NAS for resource
constrained systems have investigated various approaches to optimize for
multiple metrics. In this paper, we propose that, on top of these approaches,
it could be beneficial for NAS optimization of resource constrained systems to
also consider input data granularity. We name such a system "Data Aware NAS",
and we provide experimental evidence of its benefits by comparing it to
traditional NAS.
| [{'version': 'v1', 'created': 'Tue, 4 Apr 2023 14:20:36 GMT'}] | 2023-04-05 | [array(['Njor', 'Emil', ''], dtype=object)
array(['Madsen', 'Jan', ''], dtype=object)
array(['Fafoutis', 'Xenofon', ''], dtype=object)] |
19,362 | astro-ph/0405316 | Szymczak Marian | M. Szymczak, E. Gerard | Polarimetric observations of OH masers in proto-planetary nebulae | Accepted for publication in A&A; 11 pages, 7 figures | Astron.Astrophys. 423 (2004) 209-219 | 10.1051/0004-6361:20040461 | null | astro-ph | null | The 1612 and 1667 MHz OH maser lines have been measured in all four Stokes
parameters in 47 proto-planetary nebula (PPN) candidates. Out of 42 objects
detected, 40 and 34 are 1612 and 1667 MHz emitters, respectively. The spectral
extent of the 1667 MHz line overshoots that of the 1612 MHz line in about 80%
of the targets. 52% and 26% of the 1612 and 1667 MHz sources, respectively,
show linear polarization in at least some features. Circular polarization is
more frequent, occurring in 78% and 32% of sources of the respective OH lines.
The percentage polarization is usually small (<15%) reaching up to 50-80% in a
few sources. Features of linearly polarized emission are usually weak (0.5-4Jy)
and narrow (0.3-0.5kms^{-1}). The strength of magnetic field inferred from
likely Zeeman pairs in two sources of a few mG is consistent with values
reported elsewhere for those classes of objects. An upper limit of the electron
density in the envelope of OH17.7-2.0 derived from the difference in the
position angle of polarization vectors for the two OH lines is about 1cm^{-3}.
Distinct profiles of polarization position angle at 1612 and 1667 MHz are seen
in about one third of the sources and strongly suggest that the envelopes are
permeated with structured magnetic fields. The geometry of the magnetic field
is implicated as an important cause of the depolarization found in some PPN
candidates. For the subset of targets which show axisymmetric shells in the
optical or radio images we found a dominance of magnetic field components which
are orthogonal to the long axis of the nebulae. This finding supports the
hypothesis that such bipolar lobes are shaped by the magnetic field.
| [{'version': 'v1', 'created': 'Mon, 17 May 2004 13:01:43 GMT'}] | 2009-11-10 | [array(['Szymczak', 'M.', ''], dtype=object)
array(['Gerard', 'E.', ''], dtype=object)] |
19,363 | hep-lat/0304015 | Takanori Sugihara | Takanori Sugihara (RIKEN BNL) | Lattice chiral symmetry with hopping interactions | 4 pages, 4 figures, revtex, published version | Phys.Rev. D68 (2003) 034502 | 10.1103/PhysRevD.68.034502 | null | hep-lat | null | We formulate Dirac fermions on a (1+1)-dimensional lattice based on a
Hamiltonian formalism. The species doubling problem of the lattice fermion is
resolved by introducing hopping interactions that mix left- and right-handed
fermions around the momentum boundary. Approximate chiral symmetry is realized
on the lattice. The deviation of the fermion propagator from the continuum one
is small.
| [{'version': 'v1', 'created': 'Tue, 22 Apr 2003 18:05:51 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Jun 2003 14:13:31 GMT'}
{'version': 'v3', 'created': 'Tue, 12 Aug 2003 14:54:19 GMT'}] | 2009-11-10 | [array(['Sugihara', 'Takanori', '', 'RIKEN BNL'], dtype=object)] |
19,364 | hep-th/0102181 | null | V.P. Nair, A.P. Polychronakos | On Level Quantization for the Noncommutative Chern-Simons Theory | 6 pages, Latex, no figures | Phys.Rev.Lett. 87 (2001) 030403 | 10.1103/PhysRevLett.87.030403 | CCNY-HEP-01-01, RU-01-3-B | hep-th | null | We show that the coefficient of the three-dimensional Chern-Simons action on
the noncommutative plane must be quantized. Similar considerations apply in
other dimensions as well.
| [{'version': 'v1', 'created': 'Mon, 26 Feb 2001 20:46:29 GMT'}] | 2009-11-07 | [array(['Nair', 'V. P.', ''], dtype=object)
array(['Polychronakos', 'A. P.', ''], dtype=object)] |
19,365 | physics/0602104 | Flavio Cruz | Flavio C. Cruz, Matthew C. Stowe, and Jun Ye | Tapered semiconductor amplifiers for optical frequency combs in the near
infrared | 3 pages, 4 figures, to appear in Optics Letters | null | 10.1364/OL.31.001337 | null | physics.optics physics.atom-ph | null | A tapered semiconductor amplifier is injection seeded by a femtosecond
optical frequency comb at 780 nm from a mode-locked Ti:sapphire laser. Energy
gains over 17 dB (12 dB) are obtained for 1 mW (20 mW) of average input power
when the input pulses are stretched into the picosecond range. A spectral
window of supercontinuum light generated in a photonic fiber has also been
amplified. Interferometric measurements show sub-hertz linewidths for a
heterodyne beat between the input and amplified comb components, yielding no
detectable phase-noise degradation under amplification. These amplifiers can be
used to boost the infrared power in f-to-2f interferometers used to determine
the carrier-to-envelope offset frequency, with clear advantages for
stabilization of octave-spanning femtosecond lasers and other supercontinuum
light sources with very limited power in the infrared.
| [{'version': 'v1', 'created': 'Wed, 15 Feb 2006 11:27:54 GMT'}] | 2009-11-11 | [array(['Cruz', 'Flavio C.', ''], dtype=object)
array(['Stowe', 'Matthew C.', ''], dtype=object)
array(['Ye', 'Jun', ''], dtype=object)] |
19,366 | 1410.0551 | Nynke Vlietstra | N. Vlietstra, M. Isasa, J. Shan, J. Ben Youssef, F. Casanova, B.J. van
Wees | Simultaneous detection of the spin-Hall magnetoresistance and the
spin-Seebeck effect in Platinum and Tantalum on Yttrium Iron Garnet | 9 pages, 6 figures | Phys. Rev. B 90, 174436 (2014) | 10.1103/PhysRevB.90.174436 | null | cond-mat.mes-hall | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The spin-Seebeck effect (SSE) in platinum (Pt) and tantalum (Ta) on yttrium
iron garnet (YIG) has been investigated by both externally heating the sample
(using an on-chip Pt heater on top of the device) as well as by current-induced
heating. For SSE measurements, external heating is the most common method to
obtain clear signals. Here we show that also by current-induced heating it is
possible to directly observe the SSE, separate from the also present spin-Hall
magnetoresistance (SMR) signal, by using a lock-in detection technique. Using
this measurement technique, the presence of additional 2nd order signals at low
applied magnetic fields and high heating currents is revealed. These signals
are caused by current-induced magnetic fields (Oersted fields) generated by the
used AC-current, resulting in dynamic SMR signals.
| [{'version': 'v1', 'created': 'Thu, 2 Oct 2014 13:44:48 GMT'}
{'version': 'v2', 'created': 'Thu, 27 Nov 2014 13:01:45 GMT'}] | 2014-12-01 | [array(['Vlietstra', 'N.', ''], dtype=object)
array(['Isasa', 'M.', ''], dtype=object)
array(['Shan', 'J.', ''], dtype=object)
array(['Youssef', 'J. Ben', ''], dtype=object)
array(['Casanova', 'F.', ''], dtype=object)
array(['van Wees', 'B. J.', ''], dtype=object)] |
19,367 | 2101.08328 | John Salzer | Joseph D. Watkins, John J. Salzer, Angela Van Sistine, Ana Hayslip,
Eric Hoar, Rayna Rampalli | The H$\alpha$ Dots Survey. IV. A Fourth List of Faint Emission-Line
Objects | Accepted for publication in the Astrophysical Journal Supplement
Series | null | 10.3847/1538-4365/abdf4b | null | astro-ph.GA | http://creativecommons.org/licenses/by/4.0/ | We present the fourth catalog of serendipitously discovered compact
extragalactic emission-line sources -- H$\alpha$ Dots. A total of 454 newly
discovered objects are included in the current survey list. These objects have
been detected in searches of moderately deep narrow-band images acquired for
the ALFALFA H$\alpha$ project (Van Sistine et al. 2016). The catalog of H-alpha
Dots presented in the current paper was derived from searches carried out using
ALFALFA H$\alpha$ images obtained with the KPNO 2.1 m telescope. This results
in a substantially deeper sample of Dots compared to our previous lists, which
were all discovered in images taken with the WIYN 0.9 m telescope. The median
R-band magnitude of the current catalog is 21.59, more than 1.6 magnitudes
fainter than the median for the 0.9~m sample (factor of 4.4x fainter).
Likewise, the median emission-line flux of the detected sources is a factor of
4.3x fainter. The line-flux completeness limit of the current sample is
approximately 3 x 10$^{-16}$ erg/s/cm$^2$. We present accurate coordinates,
apparent magnitudes and narrow-band line fluxes for each object in the sample.
Unlike our previous lists of H$\alpha$ Dots, the current sample does not
include follow-up spectroscopy.
| [{'version': 'v1', 'created': 'Wed, 20 Jan 2021 21:24:08 GMT'}] | 2021-03-24 | [array(['Watkins', 'Joseph D.', ''], dtype=object)
array(['Salzer', 'John J.', ''], dtype=object)
array(['Van Sistine', 'Angela', ''], dtype=object)
array(['Hayslip', 'Ana', ''], dtype=object)
array(['Hoar', 'Eric', ''], dtype=object)
array(['Rampalli', 'Rayna', ''], dtype=object)] |
19,368 | 2112.14231 | Davood Rafiei Karkevandi | Davood Rafiei Karkevandi, Soroush Shakeri, Violetta Sagun and Oleksii
Ivanytskyi | Tidal Deformability as a Probe of Dark Matter in Neutron Stars | The article is prepared for the proceedings of the sixteenth Marcel
Grossmann meeting (MG16) | Published by the World Scientific, Proceedings of the MG16
Meeting, pp. 3713-3731 (2023) | 10.1142/9789811269776_0307 | null | astro-ph.HE gr-qc hep-ph nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The concept of boson stars (BSs) was first introduced by Kaup and
Ruffini-Bonazzola in the 1960s. Following this idea, we investigate an effect
of self-interacting asymmetric bosonic dark matter (DM) according to Colpi et
al. model for BSs (1986) on different observable properties of neutron stars
(NSs). In this paper, the bosonic DM and baryonic matter (BM) are mixed
together and interact only through gravitational force. The presence of DM as a
core of a compact star or as an extended halo around it is examined by applying
different boson masses and DM fractions for a fixed coupling constant. The
impact of DM core/halo formations on a DM admixed NS properties is probed
through the maximum mass and tidal deformability of NSs. Thanks to the recent
detection of Gravitational-Waves (GWs) and the latest X-ray observations, the
DM admixed NS's features are compared to LIGO/Virgo and NICER results.
| [{'version': 'v1', 'created': 'Tue, 28 Dec 2021 17:36:29 GMT'}] | 2023-02-08 | [array(['Karkevandi', 'Davood Rafiei', ''], dtype=object)
array(['Shakeri', 'Soroush', ''], dtype=object)
array(['Sagun', 'Violetta', ''], dtype=object)
array(['Ivanytskyi', 'Oleksii', ''], dtype=object)] |
19,369 | 1210.7913 | Mikael Vejdemo-Johansson | Mikael Vejdemo-Johansson | Interleaved equivalence of categories of persistence modules | 9 pages | null | null | null | math.AT cs.CG math.CT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We demonstrate that an equivalence of categories using
$\varepsilon$-interleavings as a fundamental component exists between the model
of persistence modules as graded modules over a polynomial ring and the model
of persistence modules as modules over the total order of the real numbers.
| [{'version': 'v1', 'created': 'Tue, 30 Oct 2012 07:13:53 GMT'}] | 2012-10-31 | [array(['Vejdemo-Johansson', 'Mikael', ''], dtype=object)] |
19,370 | 2011.07412 | Sebastian Paeckel | Jan Stolpp, Thomas K\"ohler, Salvatore R. Manmana, Eric Jeckelmann,
Fabian Heidrich-Meisner and Sebastian Paeckel | Comparative Study of State-of-the-Art Matrix-Product-State Methods for
Lattice Models with Large Local Hilbert Spaces | ancillary data files provided | Computer Physics Communications, Volume 269, December 2021, 108106 | 10.1016/j.cpc.2021.108106 | null | cond-mat.str-el cond-mat.other hep-lat quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Lattice models consisting of high-dimensional local degrees of freedom
without global particle-number conservation constitute an important problem
class in the field of strongly correlated quantum many-body systems. For
instance, they are realized in electron-phonon models, cavities, atom-molecule
resonance models, or superconductors. In general, these systems elude a
complete analytical treatment and need to be studied using numerical methods
where matrix-product states (MPS) provide a flexible and generic ansatz class.
Typically, MPS algorithms scale at least quadratic in the dimension of the
local Hilbert spaces. Hence, tailored methods, which truncate this dimension,
are required to allow for efficient simulations. Here, we describe and compare
three state-of-the-art MPS methods each of which exploits a different approach
to tackle the computational complexity. We analyze the properties of these
methods for the example of the Holstein model, performing high-precision
calculations as well as a finite-size-scaling analysis of relevant ground-state
obervables. The calculations are performed at different points in the phase
diagram yielding a comprehensive picture of the different approaches.
| [{'version': 'v1', 'created': 'Sat, 14 Nov 2020 23:24:46 GMT'}
{'version': 'v2', 'created': 'Tue, 24 Aug 2021 21:43:26 GMT'}
{'version': 'v3', 'created': 'Mon, 20 Sep 2021 11:01:49 GMT'}
{'version': 'v4', 'created': 'Thu, 30 Sep 2021 19:04:50 GMT'}] | 2021-10-04 | [array(['Stolpp', 'Jan', ''], dtype=object)
array(['Köhler', 'Thomas', ''], dtype=object)
array(['Manmana', 'Salvatore R.', ''], dtype=object)
array(['Jeckelmann', 'Eric', ''], dtype=object)
array(['Heidrich-Meisner', 'Fabian', ''], dtype=object)
array(['Paeckel', 'Sebastian', ''], dtype=object)] |
19,371 | 1808.09127 | Touqir Sajed | Touqir Sajed, Wesley Chung, Martha White | High-confidence error estimates for learned value functions | Presented at (UAI) Uncertainty in Artificial Intelligence 2018 | null | null | null | stat.ML cs.LG | http://creativecommons.org/licenses/by/4.0/ | Estimating the value function for a fixed policy is a fundamental problem in
reinforcement learning. Policy evaluation algorithms---to estimate value
functions---continue to be developed, to improve convergence rates, improve
stability and handle variability, particularly for off-policy learning. To
understand the properties of these algorithms, the experimenter needs
high-confidence estimates of the accuracy of the learned value functions. For
environments with small, finite state-spaces, like chains, the true value
function can be easily computed, to compute accuracy. For large, or continuous
state-spaces, however, this is no longer feasible. In this paper, we address
the largely open problem of how to obtain these high-confidence estimates, for
general state-spaces. We provide a high-confidence bound on an empirical
estimate of the value error to the true value error. We use this bound to
design an offline sampling algorithm, which stores the required quantities to
repeatedly compute value error estimates for any learned value function. We
provide experiments investigating the number of samples required by this
offline algorithm in simple benchmark reinforcement learning domains, and
highlight that there are still many open questions to be solved for this
important problem.
| [{'version': 'v1', 'created': 'Tue, 28 Aug 2018 05:39:48 GMT'}] | 2018-08-29 | [array(['Sajed', 'Touqir', ''], dtype=object)
array(['Chung', 'Wesley', ''], dtype=object)
array(['White', 'Martha', ''], dtype=object)] |
19,372 | 1908.05333 | Artour Tomberg | Artour Tomberg | Families of stable bundles on the fibres of the hyperk\"ahler twistor
projection | 29 pages | null | null | null | math.AG math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Given a holomorphic vector bundle $E$ on the twistor space $\mathrm{Tw}(M)$
of a simple hyperk\"ahler manifold $M$, we view it as a family of bundles
$\left\{E_I\right\}$ on the fibres $\pi^{-1}(I)$ of the twistor projection $\pi
: \mathrm{Tw}(M) \to \mathbb{CP}^1$, and study the relationship between
stability of $E$ and its fibrewise stability. We verify that the argument of
Teleman establishing the Zariski openness of stability and semi-stability in
families of bundles applies in the case of the family $\left\{E_I\right\}$. We
prove a partial converse to a result of Kaledin and Verbitsky, showing that an
irreducible bundle $E$ on $\mathrm{Tw}(M)$ is generically fibrewise stable if
the rank of $E$ is 2 or 3, or at least one element of the family
$\left\{E_I\right\}$ is a simple bundle, in the sense that $\mathrm{Hom}(E_I,
E_I) = \mathbb{C}$.
| [{'version': 'v1', 'created': 'Wed, 14 Aug 2019 20:10:51 GMT'}] | 2019-08-16 | [array(['Tomberg', 'Artour', ''], dtype=object)] |
19,373 | astro-ph/0011557 | Robert Nichol | R. Nichol, C. Miller, A. Connolly, S. Chong, C. Genovese, A. Moore, D.
Reichart, J. Schneider, L. Wasserman, J. Annis, J. Brinkman, H. Bohringer, F.
Castander, R. Kim, T. McKay, M. Postman, E. Sheldon, I. Szapudi, K. Romer, W.
Voges | SDSS-RASS: Next Generation of Cluster-Finding Algorithms | To appear in Proceedings of MPA/MPE/ESO Conference "Mining the Sky",
July 31 - August 4, 2000, Garching, Germany | null | 10.1007/10849171_81 | null | astro-ph | null | We outline here the next generation of cluster-finding algorithms. We show
how advances in Computer Science and Statistics have helped develop robust,
fast algorithms for finding clusters of galaxies in large multi-dimensional
astronomical databases like the Sloan Digital Sky Survey (SDSS). Specifically,
this paper presents four new advances: (1) A new semi-parametric algorithm -
nicknamed ``C4'' - for jointly finding clusters of galaxies in the SDSS and
ROSAT All-Sky Survey databases; (2) The introduction of the False Discovery
Rate into Astronomy; (3) The role of kernel shape in optimizing cluster
detection; (4) A new determination of the X-ray Cluster Luminosity Function
which has bearing on the existence of a ``deficit'' of high redshift, high
luminosity clusters. This research is part of our ``Computational
AstroStatistics'' collaboration (see Nichol et al. 2000) and the algorithms and
techniques discussed herein will form part of the ``Virtual Observatory''
analysis toolkit.
| [{'version': 'v1', 'created': 'Thu, 30 Nov 2000 00:06:10 GMT'}] | 2009-10-31 | [array(['Nichol', 'R.', ''], dtype=object)
array(['Miller', 'C.', ''], dtype=object)
array(['Connolly', 'A.', ''], dtype=object)
array(['Chong', 'S.', ''], dtype=object)
array(['Genovese', 'C.', ''], dtype=object)
array(['Moore', 'A.', ''], dtype=object)
array(['Reichart', 'D.', ''], dtype=object)
array(['Schneider', 'J.', ''], dtype=object)
array(['Wasserman', 'L.', ''], dtype=object)
array(['Annis', 'J.', ''], dtype=object)
array(['Brinkman', 'J.', ''], dtype=object)
array(['Bohringer', 'H.', ''], dtype=object)
array(['Castander', 'F.', ''], dtype=object)
array(['Kim', 'R.', ''], dtype=object)
array(['McKay', 'T.', ''], dtype=object)
array(['Postman', 'M.', ''], dtype=object)
array(['Sheldon', 'E.', ''], dtype=object)
array(['Szapudi', 'I.', ''], dtype=object)
array(['Romer', 'K.', ''], dtype=object)
array(['Voges', 'W.', ''], dtype=object)] |
19,374 | astro-ph/9905014 | Antonino Del Popolo | A. Del Popolo and E. Spedicato and M. Gambera | Kuiper Belt evolution due to dynamical friction | 10 pages, 4 encapsulated figures; accepted by A&A | null | null | null | astro-ph | null | In this paper we study the role of dynamical friction on the evolution of a
population of large objects ($m>10^{22}$ g) at heliocentric distances $>70$ AU
in the Kuiper Belt. We show that the already flat distribution of these objects
must flatten further due to non-spherically symmetric distribution of matter in
the Kuiper Belt. Moreover the dynamical drag, produced by dynamical friction,
causes objects of masses $\geq 10^{24} g$ to lose angular momentum and to fall
through more central regions in a timescale $\approx 10^9 yr$. This mechanism
is able to transport inwards objects of the size of Pluto, supposing it was
created beyond 50 AU, according to a Stern & Colwell's (1997b) suggestion.
| [{'version': 'v1', 'created': 'Mon, 3 May 1999 18:52:41 GMT'}
{'version': 'v2', 'created': 'Tue, 4 May 1999 10:22:16 GMT'}] | 2007-05-23 | [array(['Del Popolo', 'A.', ''], dtype=object)
array(['Spedicato', 'E.', ''], dtype=object)
array(['Gambera', 'M.', ''], dtype=object)] |
19,375 | 1809.02254 | Robin Kothari | Mark Bun, Robin Kothari, Justin Thaler | Quantum algorithms and approximating polynomials for composed functions
with shared inputs | v2: 31 pages; 1 figure. This update includes an additional result on
lower bounds for AC$^0 \circ \oplus$ computing the Inner Product function on
average. v3: Minor changes. Accepted to Quantum | Quantum 5, 543 (2021) | 10.22331/q-2021-09-16-543 | null | quant-ph cs.CC | http://creativecommons.org/licenses/by/4.0/ | We give new quantum algorithms for evaluating composed functions whose inputs
may be shared between bottom-level gates. Let $f$ be an $m$-bit Boolean
function and consider an $n$-bit function $F$ obtained by applying $f$ to
conjunctions of possibly overlapping subsets of $n$ variables. If $f$ has
quantum query complexity $Q(f)$, we give an algorithm for evaluating $F$ using
$\tilde{O}(\sqrt{Q(f) \cdot n})$ quantum queries. This improves on the bound of
$O(Q(f) \cdot \sqrt{n})$ that follows by treating each conjunction
independently, and our bound is tight for worst-case choices of $f$. Using
completely different techniques, we prove a similar tight composition theorem
for the approximate degree of $f$.
By recursively applying our composition theorems, we obtain a nearly optimal
$\tilde{O}(n^{1-2^{-d}})$ upper bound on the quantum query complexity and
approximate degree of linear-size depth-$d$ AC$^0$ circuits. As a consequence,
such circuits can be PAC learned in subexponential time, even in the
challenging agnostic setting. Prior to our work, a subexponential-time
algorithm was not known even for linear-size depth-3 AC$^0$ circuits.
As an additional consequence, we show that AC$^0 \circ \oplus$ circuits of
depth $d+1$ require size $\tilde{\Omega}(n^{1/(1- 2^{-d})}) \geq \omega(n^{1+
2^{-d}} )$ to compute the Inner Product function even on average. The previous
best size lower bound was $\Omega(n^{1+4^{-(d+1)}})$ and only held in the worst
case (Cheraghchi et al., JCSS 2018).
| [{'version': 'v1', 'created': 'Thu, 6 Sep 2018 23:58:47 GMT'}
{'version': 'v2', 'created': 'Sun, 29 Mar 2020 22:11:31 GMT'}
{'version': 'v3', 'created': 'Fri, 10 Sep 2021 17:58:37 GMT'}] | 2021-09-22 | [array(['Bun', 'Mark', ''], dtype=object)
array(['Kothari', 'Robin', ''], dtype=object)
array(['Thaler', 'Justin', ''], dtype=object)] |
19,376 | 2204.06344 | Elie Atallah | Elie Atallah, Nazanin Rahnavard, and Qiyu Sun | CoDGraD: A Code-based Distributed Gradient Descent Scheme for
Decentralized Convex Optimization | 15 pages, 4 figures | null | null | null | eess.SY cs.SY math.OC | http://creativecommons.org/licenses/by/4.0/ | In this paper, we consider a large network containing many regions such that
each region is equipped with a worker with some data processing and
communication capability. For such a network, some workers may become
stragglers due to the failure or heavy delay on computing or communicating. To
resolve the above straggling problem, a coded scheme that introduces certain
redundancy for every worker was recently proposed, and a gradient coding
paradigm was developed to solve convex optimization problems when the network
has a centralized fusion center. In this paper, we propose an iterative
distributed algorithm, referred as Code-Based Distributed Gradient Descent
algorithm (CoDGraD), to solve convex optimization problems over distributed
networks. In each iteration of the proposed algorithm, an active worker shares
the coded local gradient and approximated solution of the convex optimization
problem with non-straggling workers at the adjacent regions only. In this
paper, we also provide the consensus and convergence analysis for the CoDGraD
algorithm and we demonstrate its performance via numerical simulations.
| [{'version': 'v1', 'created': 'Wed, 13 Apr 2022 12:51:22 GMT'}] | 2022-04-14 | [array(['Atallah', 'Elie', ''], dtype=object)
array(['Rahnavard', 'Nazanin', ''], dtype=object)
array(['Sun', 'Qiyu', ''], dtype=object)] |
19,377 | 1909.01994 | Jacob Rafati | Jacob Rafati and Roummel F. Marcia | Quasi-Newton Optimization Methods For Deep Learning Applications | arXiv admin note: substantial text overlap with arXiv:1811.02693 | null | null | null | cs.LG math.OC stat.ML | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Deep learning algorithms often require solving a highly non-linear and
nonconvex unconstrained optimization problem. Methods for solving optimization
problems in large-scale machine learning, such as deep learning and deep
reinforcement learning (RL), are generally restricted to the class of
first-order algorithms, like stochastic gradient descent (SGD). While SGD
iterates are inexpensive to compute, they have slow theoretical convergence
rates. Furthermore, they require exhaustive trial-and-error to fine-tune many
learning parameters. Using second-order curvature information to find search
directions can help with more robust convergence for non-convex optimization
problems. However, computing Hessian matrices for large-scale problems is not
computationally practical. Alternatively, quasi-Newton methods construct an
approximate of the Hessian matrix to build a quadratic model of the objective
function. Quasi-Newton methods, like SGD, require only first-order gradient
information, but they can result in superlinear convergence, which makes them
attractive alternatives to SGD. The limited-memory
Broyden-Fletcher-Goldfarb-Shanno (L-BFGS) approach is one of the most popular
quasi-Newton methods that construct positive definite Hessian approximations.
In this chapter, we propose efficient optimization methods based on L-BFGS
quasi-Newton methods using line search and trust-region strategies. Our methods
bridge the disparity between first- and second-order methods by using gradient
information to calculate low-rank updates to Hessian approximations. We provide
formal convergence analysis of these methods as well as empirical results on
deep learning applications, such as image classification tasks and deep
reinforcement learning on a set of ATARI 2600 video games. Our results show a
robust convergence with preferred generalization characteristics as well as
fast training time.
| [{'version': 'v1', 'created': 'Wed, 4 Sep 2019 15:52:08 GMT'}] | 2019-09-06 | [array(['Rafati', 'Jacob', ''], dtype=object)
array(['Marcia', 'Roummel F.', ''], dtype=object)] |
19,378 | astro-ph/0311541 | Nuno C. Santos | N. C. Santos (1 and 2), G. Israelian (3), M. Mayor (2) ((1)
Observatorio Astronomico de Lisboa, Portugal (2) Observatoire de Geneve,
Switzerland (3) Instituto de Astrofisia de Canarias, Spain) | Spectroscopic [Fe/H] for 98 extra-solar planet-host stars: Exploring the
probability of planet formation | 15 pages, 9 figures, Accepted for publication in A&A; Replaced after
language editing | Astron.Astrophys.415:1153-1166,2004 | 10.1051/0004-6361:20034469 | null | astro-ph | null | We present stellar parameters and metallicities, obtained from a detailed
spectroscopic analysis, for a large sample of 98 stars known to be orbited by
planetary mass companions (almost all known targets), as well as for a
volume-limited sample of 41 stars not known to host any planet. For most of the
stars the stellar parameters are revised versions of the ones presented in our
previous works. However, we also present parameters for 18 stars with planets
not previously published, and a compilation of stellar parameters for the
remaining 4 planet-hosts for which we could not obtain a spectrum. A comparison
of our stellar parameters with values of Teff, log(g), and [Fe/H] available in
the literature shows a remarkable agreement. The derived [Fe/H] values are then
used to confirm the previously known result that planets are more prevalent
around metal-rich stars. Furthermore, we confirm that the frequency of planets
is a strongly rising function of the stellar metallicity, at least for stars
with [Fe/H]>0. While only about 3% of the solar metallicity stars in the
CORALIE planet search sample were found to be orbited by a planet, this number
increases to more than 25% for stars with [Fe/H] above +0.3. Curiously, our
results also suggest that these percentages might remain relatively constant
for values of [Fe/H] lower than about solar, increasing then linearly with the
mass fraction of heavy elements. These results are discussed in the context of
the theories of planetary formation.
| [{'version': 'v1', 'created': 'Mon, 24 Nov 2003 17:55:13 GMT'}
{'version': 'v2', 'created': 'Wed, 26 Nov 2003 09:44:50 GMT'}] | 2011-05-05 | [array(['Santos', 'N. C.', '', '1 and 2'], dtype=object)
array(['Israelian', 'G.', ''], dtype=object)
array(['Mayor', 'M.', ''], dtype=object)] |
19,379 | 1211.7097 | Velimir Ilic | Velimir M. Ilic, Miomir S. Stankovic, and Edin H. Mulalic | Comments on "Generalization of Shannon-Khinchin axioms to nonextensive
systems and the uniqueness theorem for the nonextensive entropy" | 4 pages | null | null | null | math-ph math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Suyari has proposed a generalization of Shannon-Khinchin axioms,
which determines a class of entropies containing the well-known Tsalis and
Havrda-Charvat entropies [H. Suyari, IEEE Trans. Inf. Theory, vol. 50, pp.
1783-1787, Aug. 2004]. In this comment we show that the class of entropy
functions determined by Suyari's axioms is wider than the one proposed by
Suyari and give a counterexample. Additionally, we generalize Suyari's axioms
characterizing recently introduced class of entropies obtained by averaging
pseudoadditive information content introduced in [V. Ilic and M. Stankovic,
"Comments on "Nonextensive Entropies derived from Form Invariance of
Pseudoadditivity"" Submited, 2012].
| [{'version': 'v1', 'created': 'Thu, 29 Nov 2012 21:36:12 GMT'}] | 2012-12-03 | [array(['Ilic', 'Velimir M.', ''], dtype=object)
array(['Stankovic', 'Miomir S.', ''], dtype=object)
array(['Mulalic', 'Edin H.', ''], dtype=object)] |
19,380 | 2206.04818 | Richard K Bowles | Josh M. Gramlich, Mahdi Zarif and Richard K. Bowles | Is there a Granular Potential? | 11 Pages, 7 Figures. Extended Introduction and Discussion. New
section on Measuring granular potential | null | null | null | cond-mat.soft cond-mat.stat-mech | http://creativecommons.org/licenses/by/4.0/ | Granular materials, such as sand or grain, exhibit many structural and
dynamic characteristics similar to those observed in molecular systems, despite
temperature playing no role in their properties. This has led to an effort to
develop a statistical mechanics for granular materials that has focused on
establishing an equivalent to the microcanonical ensemble and a
temperature-like thermodynamic variable. Here, we expand on these ideas by
introducing a granular potential into the Edwards ensemble, as an analogue to
the chemical potential, and explore its properties using a simple model of a
granular system. A simple kinetic Monte Carlo simulation of the model shows the
effect of mass transport leading to equilibrium and how this is connected to
the redistribution of volume in the system. An exact analytical treatment of
the model shows that the compactivity and the ratio of the granular potential
to the compactivity determine the equilibrium between two open systems that are
able to exchange volume and particles, and that mass moves from high to low
values of this ratio. Analysis of the granular potential shows that adding a
particle to the system increases the entropy at high compactivity, but
decreases the entropy at low compactivity. Finally, we demonstrate the use of a
small system thermodynamics method for the measurement of granular potential
differences.
| [{'version': 'v1', 'created': 'Fri, 10 Jun 2022 00:29:08 GMT'}
{'version': 'v2', 'created': 'Wed, 18 Jan 2023 04:25:43 GMT'}] | 2023-01-19 | [array(['Gramlich', 'Josh M.', ''], dtype=object)
array(['Zarif', 'Mahdi', ''], dtype=object)
array(['Bowles', 'Richard K.', ''], dtype=object)] |
19,381 | 2301.11489 | Megan Leszczynski | Megan Leszczynski, Ravi Ganti, Shu Zhang, Krisztian Balog, Filip
Radlinski, Fernando Pereira, Arun Tejasvi Chaganty | Generating Synthetic Data for Conversational Music Recommendation Using
Random Walks and Language Models | null | null | null | null | cs.IR cs.CL | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Conversational recommendation systems (CRSs) enable users to use natural
language feedback to control their recommendations, overcoming many of the
challenges of traditional recommendation systems. However, the practical
adoption of CRSs remains limited due to a lack of rich and diverse
conversational training data that pairs user utterances with recommendations.
To address this problem, we introduce a new method to generate synthetic
training data by transforming curated item collections, such as playlists or
movie watch lists, into item-seeking conversations. First, we use a biased
random walk to generate a sequence of slates, or sets of item recommendations;
then, we use a language model to generate corresponding user utterances. We
demonstrate our approach by generating a conversational music recommendation
dataset with over one million conversations, which were found to be consistent
with relevant recommendations by a crowdsourced evaluation. Using the synthetic
data to train a CRS, we significantly outperform standard retrieval baselines
in offline and online evaluations.
| [{'version': 'v1', 'created': 'Fri, 27 Jan 2023 01:54:16 GMT'}] | 2023-01-30 | [array(['Leszczynski', 'Megan', ''], dtype=object)
array(['Ganti', 'Ravi', ''], dtype=object)
array(['Zhang', 'Shu', ''], dtype=object)
array(['Balog', 'Krisztian', ''], dtype=object)
array(['Radlinski', 'Filip', ''], dtype=object)
array(['Pereira', 'Fernando', ''], dtype=object)
array(['Chaganty', 'Arun Tejasvi', ''], dtype=object)] |
19,382 | 2106.13707 | Rashed Shelim | Rashed Shelim and Ahmed S. Ibrahim | A Fast Graph Kernel Based Classification Method for Wireless Link
Scheduling on Riemannian Manifold | null | null | null | null | eess.SP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we propose a novel graph kernel method for the wireless link
scheduling problem in device-to-device (D2D) networks on Riemannian manifold.
The link scheduling problem can be considered as a binary classification
problem since each D2D pair can only hold the state active or inactive. Our
goal is to learn a novel metric that facilitates the design of an efficient but
less computationally demanding machine learning (ML) solution for the binary
classification task of link scheduling problem that requires no channel state
information (CSI) and a fewer number of training samples as opposed to other
benchmark ML algorithms. To this aim, we first represent the wireless D2D
network as a graph and model the features of each D2D pair, including its
communication and interference links, as regularized (i.e., positively-shifted)
Laplacian matrices which are symmetric positive definite (SPD) one. By doing
so, we represent the feature information of each D2D pair as a point on the SPD
manifold, and we analyze the topology through Riemannian geometry. We compute
the Riemannian metric, e.g., Log-Euclidean metric (LEM), which are suitable
distance measures between the regularized Laplacian matrices. The LEM is then
utilized to define a positive definite graph kernel for the binary
classification of the link scheduling decisions. Simulation results demonstrate
that the proposed graph Kernel-based method is computationally less demanding
and achieves a sum rate of more than 95% of benchmark algorithm FPLinQ [1] for
10 D2D pairs without using CSI and less than a hundred training network
layouts.
| [{'version': 'v1', 'created': 'Fri, 25 Jun 2021 15:46:26 GMT'}] | 2021-06-28 | [array(['Shelim', 'Rashed', ''], dtype=object)
array(['Ibrahim', 'Ahmed S.', ''], dtype=object)] |
19,383 | 1008.1585 | Masatoshi Imanishi | Masatoshi Imanishi (1), Takao Nakagawa (2), Mai Shirahata (2), Yoichi
Ohyama (3), Takashi Onaka (4) ((1) Subaru/NAOJ, (2) ISAS/JAXA, (3)
ASIAA/Taiwan, (4) Univ. of Tokyo) | AKARI IRC infrared 2.5-5 micron spectroscopy of a large sample of
luminous infrared galaxies | 39 pages, 10 figures, accepted for publication in ApJ (September 20,
2010, V721 -1 issue) | null | 10.1088/0004-637X/721/2/1233 | null | astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present the results of our systematic infrared 2.5-5 micron spectroscopy
of 60 luminous infrared galaxies (LIRGs) with infrared luminosities L(IR) =
10^11-12 Lsun, and 54 ultraluminous infrared galaxies (ULIRGs) with L(IR) >
10^12 Lsun, using AKARI IRC. AKARI IRC slit-less spectroscopy allows us to
probe the full range of emission from these galaxies, including spatially
extended components. The 3.3 micron polycyclic aromatic hydrocarbon (PAH)
emission features, hydrogen recombination emission lines, and various
absorption features are detected and used to investigate the properties of
these galaxies. Because of the relatively small effect of dust extinction in
the infrared range, quantitative discussion of these dusty galaxy populations
is possible. For sources with clearly detectable Br beta (2.63 micron) and Br
alpha (4.05 micron) emission lines, the flux ratios are found to be similar to
that predicted by case B theory. Starburst luminosities are estimated from both
3.3 micron PAH and Br alpha emission, which roughly agree with each other. In
addition to the detected starburst activity, a significant fraction of the
observed sources display signatures of obscured AGNs, such as low PAH
equivalent widths, large optical depths of dust absorption features, and red
continuum emission. The energetic importance of optically elusive buried AGNs
in optically non-Seyfert galaxies tends to increase with increasing galaxy
infrared luminosity, from LIRGs to ULIRGs.
| [{'version': 'v1', 'created': 'Mon, 9 Aug 2010 20:04:37 GMT'}
{'version': 'v2', 'created': 'Fri, 20 Aug 2010 00:50:46 GMT'}] | 2015-05-19 | [array(['Imanishi', 'Masatoshi', ''], dtype=object)
array(['Nakagawa', 'Takao', ''], dtype=object)
array(['Shirahata', 'Mai', ''], dtype=object)
array(['Ohyama', 'Yoichi', ''], dtype=object)
array(['Onaka', 'Takashi', ''], dtype=object)] |
19,384 | hep-ph/9409219 | Klaus Geiger | Klaus Geiger | High Density QCD and Entropy Production at Heavy Ion Colliders | (CERN-TH. 7429/94), Latex file, 10 pages, with 6 figures available
upon request. encoded with uufiles | null | null | null | hep-ph | null | The role of entropy production in the context of probing QCD properties at
high densities and finite temperatures in ultra-relativistic collisions of
heavy nuclei is inspected. It is argued that the entropy generated in these
reactions provides a powerful tool to investigate the space-time evolution and
the question whether and how a deconfined plasma of quarks and gluons is
formed. I will address the questions how entropy is produced, and how it is
measurable. The uncertainties in predicting the different contributions to the
total entropy and particle multiplicities during the course of heavy ion
collisions are also discussed.
| [{'version': 'v1', 'created': 'Sun, 4 Sep 1994 17:18:19 GMT'}] | 2009-09-25 | [array(['Geiger', 'Klaus', ''], dtype=object)] |
19,385 | 1307.3149 | Maxim Zabzine | Jian Qiu and Maxim Zabzine | 5D Super Yang-Mills on $Y^{p,q}$ Sasaki-Einstein manifolds | 43 pages, typos and mistakes corrected | Commun.Math.Phys. 333 (2015) 861-904 | 10.1007/s00220-014-2194-7 | null | hep-th math-ph math.MP math.SG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | On any simply connected Sasaki-Einstein five dimensional manifold one can
construct a super Yang-Mills theory which preserves at least two
supersymmetries. We study the special case of toric Sasaki-Einstein manifolds
known as $Y^{p,q}$ manifolds. We use the localisation technique to compute the
full perturbative part of the partition function. The full equivariant result
is expressed in terms of certain special function which appears to be a curious
generalisation of the triple sine function. As an application of our general
result we study the large $N$ behaviour for the case of single hypermultiplet
in adjoint representation and we derive the $N^3$-behaviour in this case.
| [{'version': 'v1', 'created': 'Thu, 11 Jul 2013 15:52:54 GMT'}
{'version': 'v2', 'created': 'Mon, 19 Aug 2013 12:30:47 GMT'}
{'version': 'v3', 'created': 'Fri, 27 Feb 2015 12:48:40 GMT'}] | 2015-03-02 | [array(['Qiu', 'Jian', ''], dtype=object)
array(['Zabzine', 'Maxim', ''], dtype=object)] |
19,386 | math/0410360 | Tyler J. Jarvis | Tyler J. Jarvis, William E. Lang, Nansen Petrosyan, Gretchen Rimmasch,
Julie Rogers, Erin D. Summers | Classification of Singular Fibres on Rational Elliptic Surfaces in
Characteristic Three | 40 Pages. Minor typos corrected | Communications in Algebra 33: 4533--4566 (2005) | 10.1080/00927870500274861 | null | math.AG | null | We determine and list all possible configurations of singular fibres on
rational elliptic surfaces in characteristic three. In total, we find that 267
distinct configurations exist. This result complements Miranda and Persson's
classification in characteristic zero, and Lang's classification in
characteristic two.
| [{'version': 'v1', 'created': 'Fri, 15 Oct 2004 23:32:07 GMT'}
{'version': 'v2', 'created': 'Sat, 12 Mar 2005 21:51:32 GMT'}] | 2007-05-23 | [array(['Jarvis', 'Tyler J.', ''], dtype=object)
array(['Lang', 'William E.', ''], dtype=object)
array(['Petrosyan', 'Nansen', ''], dtype=object)
array(['Rimmasch', 'Gretchen', ''], dtype=object)
array(['Rogers', 'Julie', ''], dtype=object)
array(['Summers', 'Erin D.', ''], dtype=object)] |
19,387 | 2005.00947 | Rui Sun | David Simchi-Levi, Rui Sun, Huanan Zhang | Online Learning and Optimization for Revenue Management Problems with
Add-on Discounts | null | null | null | null | cs.DS cs.LG math.OC stat.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study in this paper a revenue management problem with add-on discounts.
The problem is motivated by the practice in the video game industry, where a
retailer offers discounts on selected supportive products (e.g. video games) to
customers who have also purchased the core products (e.g. video game consoles).
We formulate this problem as an optimization problem to determine the prices of
different products and the selection of products with add-on discounts. To
overcome the computational challenge of this optimization problem, we propose
an efficient FPTAS algorithm that can solve the problem approximately to any
desired accuracy. Moreover, we consider the revenue management problem in the
setting where the retailer has no prior knowledge of the demand functions of
different products. To resolve this problem, we propose a UCB-based learning
algorithm that uses the FPTAS optimization algorithm as a subroutine. We show
that our learning algorithm can converge to the optimal algorithm that has
access to the true demand functions, and we prove that the convergence rate is
tight up to a certain logarithmic term. In addition, we conduct numerical
experiments with the real-world transaction data we collect from a popular
video gaming brand's online store on Tmall.com. The experiment results
illustrate our learning algorithm's robust performance and fast convergence in
various scenarios. We also compare our algorithm with the optimal policy that
does not use any add-on discount, and the results show the advantages of using
the add-on discount strategy in practice.
| [{'version': 'v1', 'created': 'Sat, 2 May 2020 23:54:17 GMT'}] | 2020-05-05 | [array(['Simchi-Levi', 'David', ''], dtype=object)
array(['Sun', 'Rui', ''], dtype=object)
array(['Zhang', 'Huanan', ''], dtype=object)] |
19,388 | 1705.06589 | Mortaza Abtahi Dr. | Mortaza Abtahi and Sara Farhangi | A Characterization of Polynomially Convex Sets in Banach Spaces | to appear in Results in Mathemarics | null | null | null | math.FA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let $E$ be a Banach space and $\X$ be the closed unit ball of the dual space
$E^*$. For a compact set $K$ in $E$, we prove that $K$ is polynomially convex
in $E$ if and only if there exist a unital commutative Banach algebra $A$ and a
continuous function $f:\X\to A$ such that (1) $A$ is generated by $f(\X)$, (2)
the character space of $A$ is homeomorphic to $K$, and (3) $K=\vsp(f)$ the
joint spectrum of $f$. In case $E=\c(X)$, where $X$ is a compact Hausdorff
space, we will see that $\X$ can be replaced by $X$.
| [{'version': 'v1', 'created': 'Mon, 15 May 2017 08:04:40 GMT'}] | 2017-05-19 | [array(['Abtahi', 'Mortaza', ''], dtype=object)
array(['Farhangi', 'Sara', ''], dtype=object)] |
19,389 | quant-ph/0211183 | Natalia Yakovleva | A.R. Kessel | Stabilization of Quantum Computer Calculation Basis by Qubit Encoding in
Virtual Spin Representation | null | null | null | null | quant-ph | null | It is proposed to map the quantum information qubit not to individual spin
1/2 states, but to the collective spin states being eigenfunctions of the
Hamiltonian including spin-spin interactions, which may be not small. Such an
approach allows to introduce more stable calculation basis for quantum computer
based on the solid state NMR systems.
| [{'version': 'v1', 'created': 'Wed, 27 Nov 2002 15:57:43 GMT'}] | 2007-05-23 | [array(['Kessel', 'A. R.', ''], dtype=object)] |
19,390 | 2112.10879 | Tuomo Kuusi | Gohar Aleksanyan and Tuomo Kuusi | Quantitative homogenization for the obstacle problem and its free
boundary | 42 pages, 1 figure | null | null | null | math.AP | http://creativecommons.org/licenses/by/4.0/ | In this manuscript we prove quantitative homogenization results for the
obstacle problem with bounded measurable coefficients. As a consequence,
large-scale regularity results both for the solution and the free boundary for
the heterogeneous obstacle problem are derived.
| [{'version': 'v1', 'created': 'Mon, 20 Dec 2021 21:46:36 GMT'}] | 2021-12-22 | [array(['Aleksanyan', 'Gohar', ''], dtype=object)
array(['Kuusi', 'Tuomo', ''], dtype=object)] |
19,391 | 1111.3376 | Christopher Quinn | Dustin G. Mixon, Christopher J. Quinn, Negar Kiyavash, and Matthew
Fickus | Fingerprinting with Equiangular Tight Frames | 10 pages, 6 figures, presented in part at ICASSP 2011 and SPIE 2011 | null | null | null | cs.IT cs.MM math.IT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Digital fingerprinting is a framework for marking media files, such as
images, music, or movies, with user-specific signatures to deter illegal
distribution. Multiple users can collude to produce a forgery that can
potentially overcome a fingerprinting system. This paper proposes an
equiangular tight frame fingerprint design which is robust to such collusion
attacks. We motivate this design by considering digital fingerprinting in terms
of compressed sensing. The attack is modeled as linear averaging of multiple
marked copies before adding a Gaussian noise vector. The content owner can then
determine guilt by exploiting correlation between each user's fingerprint and
the forged copy. The worst-case error probability of this detection scheme is
analyzed and bounded. Simulation results demonstrate the average-case
performance is similar to the performance of orthogonal and simplex fingerprint
designs, while accommodating several times as many users.
| [{'version': 'v1', 'created': 'Mon, 14 Nov 2011 21:44:55 GMT'}] | 2011-11-16 | [array(['Mixon', 'Dustin G.', ''], dtype=object)
array(['Quinn', 'Christopher J.', ''], dtype=object)
array(['Kiyavash', 'Negar', ''], dtype=object)
array(['Fickus', 'Matthew', ''], dtype=object)] |
19,392 | chao-dyn/9405005 | Bruce W. Roberts | Bruce W. Roberts, Eberhard Bodenschatz, and James P. Sethna | Defect--Defect Correlation Functions, Generic Scale Invariance, and the
Complex Ginzburg--Landau Equation | 12 pages and 3 included figures, RevTeX | null | null | CULASSP-4269 | chao-dyn nlin.CD | null | We present a calculation of defect--defect correlation functions in the
defect turbulence regime of the complex Ginzburg--Landau equation. Our results
do not agree with the predictions of generic scale invariance. Using the
topological nature of the defects, we prove that defect--defect correlations
cannot decay as slowly as predicted by generic scale invariance
| [{'version': 'v1', 'created': 'Wed, 11 May 1994 12:08:43 GMT'}] | 2008-02-03 | [array(['Roberts', 'Bruce W.', ''], dtype=object)
array(['Bodenschatz', 'Eberhard', ''], dtype=object)
array(['Sethna', 'James P.', ''], dtype=object)] |
19,393 | cond-mat/0504638 | Pavel Rodin | Pavel Rodin and Igor Grekhov | Dynamic avalanche breakdown of a p-n junction: deterministic triggering
of a plane streamer front | 4 pages, 2 figures | Appl. Phys. Lett. 86, 243504 (2005) | 10.1063/1.1947915 | null | cond-mat.mtrl-sci | null | We discuss the dynamic impact ionization breakdown of high voltage p-n
junction which occurs when the electric field is increased above the threshold
of avalanche impact ionization on a time scale smaller than the inverse
thermogeneration rate. The avalanche-to-streamer transition characterized by
generation of dense electron-hole plasma capable to screen the applied external
electric field occurs in such regimes. We argue that the experimentally
observed deterministic triggering of the plane streamer front at the electric
field strength above the threshold of avalanche impact ionization but yet below
the threshold of band-to-band tunneling is generally caused by field-enhanced
ionization of deep-level centers. We suggest that the process-induced sulfur
centers and native defects such as EL2, HB2, HB5 centers initiate the front in
Si and GaAs structures, respectively. In deep-level free structures the plane
streamer front is triggered by Zener band-to-band tunneling.
| [{'version': 'v1', 'created': 'Mon, 25 Apr 2005 17:29:32 GMT'}] | 2009-11-11 | [array(['Rodin', 'Pavel', ''], dtype=object)
array(['Grekhov', 'Igor', ''], dtype=object)] |
19,394 | 1308.4075 | Atlas Publications | ATLAS Collaboration | Search for microscopic black holes in a like-sign dimuon final state
using large track multiplicity with the ATLAS detector | 10 pages plus author list (22 pages total), 7 figures, 4 tables,
submitted to PRD, All figures including auxiliary figures are available at
http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-04/ | Phys. Rev. D 88 (2013) 072001 | 10.1103/PhysRevD.88.072001 | CERN-PH-EP-2013-120 | hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A search is presented for microscopic black holes in a like-sign dimuon final
state in proton--proton collisions at sqrt(s)= 8 TeV. The data were collected
with the ATLAS detector at the Large Hadron Collider in 2012 and correspond to
an integrated luminosity of 20.3 fb-1. Using a high track multiplicity
requirement, 0.6 +- 0.2 background events from Standard Model processes are
predicted and none observed. This result is interpreted in the context of
low-scale gravity models and 95% CL lower limits on microscopic black hole
masses are set for different model assumptions.
| [{'version': 'v1', 'created': 'Mon, 19 Aug 2013 17:03:18 GMT'}] | 2013-10-03 | [array(['ATLAS Collaboration', '', ''], dtype=object)] |
19,395 | 2010.00406 | Aaron Defazio | Aaron Defazio | Momentum via Primal Averaging: Theoretical Insights and Learning Rate
Schedules for Non-Convex Optimization | null | null | null | null | cs.LG math.OC stat.ML | http://creativecommons.org/licenses/by-sa/4.0/ | Momentum methods are now used pervasively within the machine learning
community for training non-convex models such as deep neural networks.
Empirically, they out perform traditional stochastic gradient descent (SGD)
approaches. In this work we develop a Lyapunov analysis of SGD with momentum
(SGD+M), by utilizing a equivalent rewriting of the method known as the
stochastic primal averaging (SPA) form. This analysis is much tighter than
previous theory in the non-convex case, and due to this we are able to give
precise insights into when SGD+M may out-perform SGD, and what hyper-parameter
schedules will work and why.
| [{'version': 'v1', 'created': 'Thu, 1 Oct 2020 13:46:32 GMT'}
{'version': 'v2', 'created': 'Tue, 3 Nov 2020 22:05:04 GMT'}
{'version': 'v3', 'created': 'Tue, 23 Feb 2021 19:49:57 GMT'}
{'version': 'v4', 'created': 'Tue, 1 Jun 2021 17:53:38 GMT'}] | 2021-06-02 | [array(['Defazio', 'Aaron', ''], dtype=object)] |
19,396 | 1701.02591 | Kyle Augustson | Kyle Augustson | Dynamos and Differential Rotation: Advances at the Crossroads of
Analytics, Numerics, and Observations | 16 pages, 14 figures, Joint TASC2-KASC9 Workshop and SPACEINN-HELAS8
Conference: Seismology of the Sun and the Distant Stars 2016 | null | 10.1051/epjconf/201716002010 | null | astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recent observational, theoretical, and numerical progress made in
understanding stellar magnetism is discussed. Particularly, this review will
cover the physical processes thought to be at the origin of these magnetic
fields and their variability, namely dynamo action arising from the interaction
between convection, rotation, radiation and magnetic fields. Some care will be
taken to cover recent analytical advances regarding the dynamics and magnetism
of radiative interiors, including some thoughts on the role of a tachocline.
Moreover, recent and rapidly advancing numerical modeling of convective dynamos
will be discussed, looking at rapidly rotating convective systems, grand minima
and scaling laws for magnetic field strength. These topics are linked to
observations or their observational implications.
| [{'version': 'v1', 'created': 'Tue, 10 Jan 2017 13:56:59 GMT'}] | 2017-11-08 | [array(['Augustson', 'Kyle', ''], dtype=object)] |
19,397 | hep-ph/9703321 | Koichi Yoshioka | Masako Bando, Joe Sato and Koichi Yoshioka | Infra-Red Fixed Points in an Asymptotically Non-Free Theory | 12 pages + 8 eps figures, LaTeX, typos corrected, revised version to
be published | Prog.Theor.Phys. 98 (1997) 169-176 | 10.1143/PTP.98.169 | ICRR-Report-384-97-7, KUNS-1437 | hep-ph | null | We investigate the infrared fixed point structure in asymptotically free and
asymptotically non-free theory. We find that the ratios of couplings converge
strongly to their infrared fixed points in the asymptotically non-free theory.
| [{'version': 'v1', 'created': 'Fri, 14 Mar 1997 07:32:33 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Apr 1997 12:28:41 GMT'}
{'version': 'v3', 'created': 'Mon, 9 Jun 1997 11:28:21 GMT'}] | 2009-10-30 | [array(['Bando', 'Masako', ''], dtype=object)
array(['Sato', 'Joe', ''], dtype=object)
array(['Yoshioka', 'Koichi', ''], dtype=object)] |
19,398 | 0906.5060 | R Doomun | Prof. Dhananjay R. Kalbande, Dr. G. T. Thampi, Mr. Manish Singh | Incidence Handling and Response System | 8 Pages, International Journal of Computer Science and Information
Security (IJCSIS) | IJCSIS June 2009 Issue, Vol. 2, No. 1 | null | null | cs.CR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A computer network can be attacked in a number of ways. The security-related
threats have become not only numerous but also diverse and they may also come
in the form of blended attacks. It becomes difficult for any security system to
block all types of attacks. This gives rise to the need of an incidence
handling capability which is necessary for rapidly detecting incidents,
minimizing loss and destruction, mitigating the weaknesses that were exploited
and restoring the computing services. Incidence response has always been an
important aspect of information security but it is often overlooked by security
administrators. in this paper, we propose an automated system which will handle
the security threats and make the computer network capable enough to withstand
any kind of attack. we also present the state-of-the-art technology in
computer, network and software which is required to build such a system.
| [{'version': 'v1', 'created': 'Sat, 27 Jun 2009 10:10:18 GMT'}] | 2009-06-30 | [array(['Kalbande', 'Prof. Dhananjay R.', ''], dtype=object)
array(['Thampi', 'Dr. G. T.', ''], dtype=object)
array(['Singh', 'Mr. Manish', ''], dtype=object)] |
19,399 | math/0106200 | Max Neumann-Coto | Max Neumann-Coto | A characterization of shortest geodesics on surfaces | Published by Algebraic and Geometric Topology at
http://www.maths.warwick.ac.uk/agt/AGTVol1/agt-1-17.abs.html | Algebr. Geom. Topol. 1 (2001) 349-368 | 10.2140/agt.2001.1.349 | null | math.GT math.MG | null | Any finite configuration of curves with minimal intersections on a surface is
a configuration of shortest geodesics for some Riemannian metric on the
surface. The metric can be chosen to make the lengths of these geodesics equal
to the number of intersections along them.
| [{'version': 'v1', 'created': 'Sun, 24 Jun 2001 14:09:30 GMT'}] | 2014-10-01 | [array(['Neumann-Coto', 'Max', ''], dtype=object)] |
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