PyLate model based on Speedsy/turkish-multilingual-e5-small-32768

This is a PyLate model finetuned from Speedsy/turkish-multilingual-e5-small-32768 on the train dataset. It maps sentences & paragraphs to sequences of 128-dimensional dense vectors and can be used for semantic textual similarity using the MaxSim operator.

Model Details

Model Description

Model Sources

Full Model Architecture

ColBERT(
  (0): Transformer({'max_seq_length': 179, 'do_lower_case': False}) with Transformer model: BertModel 
  (1): Dense({'in_features': 384, 'out_features': 128, 'bias': False, 'activation_function': 'torch.nn.modules.linear.Identity'})
)

Usage

First install the PyLate library:

pip install -U pylate

Retrieval

PyLate provides a streamlined interface to index and retrieve documents using ColBERT models. The index leverages the Voyager HNSW index to efficiently handle document embeddings and enable fast retrieval.

Indexing documents

First, load the ColBERT model and initialize the Voyager index, then encode and index your documents:

from pylate import indexes, models, retrieve

# Step 1: Load the ColBERT model
model = models.ColBERT(
    model_name_or_path=pylate_model_id,
)

# Step 2: Initialize the Voyager index
index = indexes.Voyager(
    index_folder="pylate-index",
    index_name="index",
    override=True,  # This overwrites the existing index if any
)

# Step 3: Encode the documents
documents_ids = ["1", "2", "3"]
documents = ["document 1 text", "document 2 text", "document 3 text"]

documents_embeddings = model.encode(
    documents,
    batch_size=32,
    is_query=False,  # Ensure that it is set to False to indicate that these are documents, not queries
    show_progress_bar=True,
)

# Step 4: Add document embeddings to the index by providing embeddings and corresponding ids
index.add_documents(
    documents_ids=documents_ids,
    documents_embeddings=documents_embeddings,
)

Note that you do not have to recreate the index and encode the documents every time. Once you have created an index and added the documents, you can re-use the index later by loading it:

# To load an index, simply instantiate it with the correct folder/name and without overriding it
index = indexes.Voyager(
    index_folder="pylate-index",
    index_name="index",
)

Retrieving top-k documents for queries

Once the documents are indexed, you can retrieve the top-k most relevant documents for a given set of queries. To do so, initialize the ColBERT retriever with the index you want to search in, encode the queries and then retrieve the top-k documents to get the top matches ids and relevance scores:

# Step 1: Initialize the ColBERT retriever
retriever = retrieve.ColBERT(index=index)

# Step 2: Encode the queries
queries_embeddings = model.encode(
    ["query for document 3", "query for document 1"],
    batch_size=32,
    is_query=True,  #  # Ensure that it is set to False to indicate that these are queries
    show_progress_bar=True,
)

# Step 3: Retrieve top-k documents
scores = retriever.retrieve(
    queries_embeddings=queries_embeddings,
    k=10,  # Retrieve the top 10 matches for each query
)

Reranking

If you only want to use the ColBERT model to perform reranking on top of your first-stage retrieval pipeline without building an index, you can simply use rank function and pass the queries and documents to rerank:

from pylate import rank, models

queries = [
    "query A",
    "query B",
]

documents = [
    ["document A", "document B"],
    ["document 1", "document C", "document B"],
]

documents_ids = [
    [1, 2],
    [1, 3, 2],
]

model = models.ColBERT(
    model_name_or_path=pylate_model_id,
)

queries_embeddings = model.encode(
    queries,
    is_query=True,
)

documents_embeddings = model.encode(
    documents,
    is_query=False,
)

reranked_documents = rank.rerank(
    documents_ids=documents_ids,
    queries_embeddings=queries_embeddings,
    documents_embeddings=documents_embeddings,
)

Evaluation

Metrics

Py Late Information Retrieval

  • Dataset: ['NanoDBPedia', 'NanoFiQA2018', 'NanoHotpotQA', 'NanoMSMARCO', 'NanoNQ', 'NanoSCIDOCS']
  • Evaluated with pylate.evaluation.pylate_information_retrieval_evaluator.PyLateInformationRetrievalEvaluator
Metric NanoDBPedia NanoFiQA2018 NanoHotpotQA NanoMSMARCO NanoNQ NanoSCIDOCS
MaxSim_accuracy@1 0.78 0.3 0.82 0.36 0.54 0.32
MaxSim_accuracy@3 0.92 0.46 0.94 0.54 0.7 0.56
MaxSim_accuracy@5 0.96 0.56 0.96 0.64 0.74 0.62
MaxSim_accuracy@10 0.96 0.66 0.98 0.72 0.8 0.76
MaxSim_precision@1 0.78 0.3 0.82 0.36 0.54 0.32
MaxSim_precision@3 0.6333 0.2 0.4667 0.18 0.24 0.2467
MaxSim_precision@5 0.616 0.172 0.32 0.128 0.156 0.204
MaxSim_precision@10 0.518 0.11 0.172 0.072 0.084 0.146
MaxSim_recall@1 0.0994 0.1484 0.41 0.36 0.51 0.0667
MaxSim_recall@3 0.1745 0.2938 0.7 0.54 0.67 0.1527
MaxSim_recall@5 0.2629 0.3997 0.8 0.64 0.71 0.2087
MaxSim_recall@10 0.36 0.4885 0.86 0.72 0.75 0.2977
MaxSim_ndcg@10 0.6463 0.3673 0.7878 0.5283 0.6466 0.2869
MaxSim_mrr@10 0.8457 0.4028 0.8772 0.4682 0.631 0.4668
MaxSim_map@100 0.4879 0.2931 0.7087 0.479 0.609 0.2105

Pylate Custom Nano BEIR

  • Dataset: NanoBEIR_mean
  • Evaluated with pylate_nano_beir_evaluator.PylateCustomNanoBEIREvaluator
Metric Value
MaxSim_accuracy@1 0.52
MaxSim_accuracy@3 0.6867
MaxSim_accuracy@5 0.7467
MaxSim_accuracy@10 0.8133
MaxSim_precision@1 0.52
MaxSim_precision@3 0.3278
MaxSim_precision@5 0.266
MaxSim_precision@10 0.1837
MaxSim_recall@1 0.2658
MaxSim_recall@3 0.4218
MaxSim_recall@5 0.5035
MaxSim_recall@10 0.5794
MaxSim_ndcg@10 0.5439
MaxSim_mrr@10 0.6153
MaxSim_map@100 0.4647

Training Details

Training Dataset

train

  • Dataset: train at 1072b6b
  • Size: 443,147 training samples
  • Columns: query_id, document_ids, and scores
  • Approximate statistics based on the first 1000 samples:
    query_id document_ids scores
    type string list list
    details
    • min: 5 tokens
    • mean: 5.83 tokens
    • max: 6 tokens
    • size: 32 elements
    • size: 32 elements
  • Samples:
    query_id document_ids scores
    817836 ['2716076', '6741935', '2681109', '5562684', '3507339', ...] [1.0, 0.7059561610221863, 0.21702419221401215, 0.38270196318626404, 0.20812414586544037, ...]
    1045170 ['5088671', '2953295', '8783471', '4268439', '6339935', ...] [1.0, 0.6493034362792969, 0.0692221149802208, 0.17963139712810516, 0.6697239875793457, ...]
    1069432 ['3724008', '314949', '8657336', '7420456', '879004', ...] [1.0, 0.3706032931804657, 0.3508036434650421, 0.2823200523853302, 0.17563475668430328, ...]
  • Loss: pylate.losses.distillation.Distillation

Training Hyperparameters

Non-Default Hyperparameters

  • eval_strategy: steps
  • per_device_train_batch_size: 32
  • learning_rate: 3e-05
  • num_train_epochs: 1
  • bf16: True

All Hyperparameters

Click to expand
  • overwrite_output_dir: False
  • do_predict: False
  • eval_strategy: steps
  • prediction_loss_only: True
  • per_device_train_batch_size: 32
  • per_device_eval_batch_size: 8
  • per_gpu_train_batch_size: None
  • per_gpu_eval_batch_size: None
  • gradient_accumulation_steps: 1
  • eval_accumulation_steps: None
  • torch_empty_cache_steps: None
  • learning_rate: 3e-05
  • weight_decay: 0.0
  • adam_beta1: 0.9
  • adam_beta2: 0.999
  • adam_epsilon: 1e-08
  • max_grad_norm: 1.0
  • num_train_epochs: 1
  • max_steps: -1
  • lr_scheduler_type: linear
  • lr_scheduler_kwargs: {}
  • warmup_ratio: 0.0
  • warmup_steps: 0
  • log_level: passive
  • log_level_replica: warning
  • log_on_each_node: True
  • logging_nan_inf_filter: True
  • save_safetensors: True
  • save_on_each_node: False
  • save_only_model: False
  • restore_callback_states_from_checkpoint: False
  • no_cuda: False
  • use_cpu: False
  • use_mps_device: False
  • seed: 42
  • data_seed: None
  • jit_mode_eval: False
  • use_ipex: False
  • bf16: True
  • fp16: False
  • fp16_opt_level: O1
  • half_precision_backend: auto
  • bf16_full_eval: False
  • fp16_full_eval: False
  • tf32: None
  • local_rank: 0
  • ddp_backend: None
  • tpu_num_cores: None
  • tpu_metrics_debug: False
  • debug: []
  • dataloader_drop_last: False
  • dataloader_num_workers: 0
  • dataloader_prefetch_factor: None
  • past_index: -1
  • disable_tqdm: False
  • remove_unused_columns: True
  • label_names: None
  • load_best_model_at_end: False
  • ignore_data_skip: False
  • fsdp: []
  • fsdp_min_num_params: 0
  • fsdp_config: {'min_num_params': 0, 'xla': False, 'xla_fsdp_v2': False, 'xla_fsdp_grad_ckpt': False}
  • fsdp_transformer_layer_cls_to_wrap: None
  • accelerator_config: {'split_batches': False, 'dispatch_batches': None, 'even_batches': True, 'use_seedable_sampler': True, 'non_blocking': False, 'gradient_accumulation_kwargs': None}
  • deepspeed: None
  • label_smoothing_factor: 0.0
  • optim: adamw_torch
  • optim_args: None
  • adafactor: False
  • group_by_length: False
  • length_column_name: length
  • ddp_find_unused_parameters: None
  • ddp_bucket_cap_mb: None
  • ddp_broadcast_buffers: False
  • dataloader_pin_memory: True
  • dataloader_persistent_workers: False
  • skip_memory_metrics: True
  • use_legacy_prediction_loop: False
  • push_to_hub: False
  • resume_from_checkpoint: None
  • hub_model_id: None
  • hub_strategy: every_save
  • hub_private_repo: None
  • hub_always_push: False
  • gradient_checkpointing: False
  • gradient_checkpointing_kwargs: None
  • include_inputs_for_metrics: False
  • include_for_metrics: []
  • eval_do_concat_batches: True
  • fp16_backend: auto
  • push_to_hub_model_id: None
  • push_to_hub_organization: None
  • mp_parameters:
  • auto_find_batch_size: False
  • full_determinism: False
  • torchdynamo: None
  • ray_scope: last
  • ddp_timeout: 1800
  • torch_compile: False
  • torch_compile_backend: None
  • torch_compile_mode: None
  • dispatch_batches: None
  • split_batches: None
  • include_tokens_per_second: False
  • include_num_input_tokens_seen: False
  • neftune_noise_alpha: None
  • optim_target_modules: None
  • batch_eval_metrics: False
  • eval_on_start: False
  • use_liger_kernel: False
  • eval_use_gather_object: False
  • average_tokens_across_devices: False
  • prompts: None
  • batch_sampler: batch_sampler
  • multi_dataset_batch_sampler: proportional

Training Logs

Epoch Step Training Loss NanoDBPedia_MaxSim_ndcg@10 NanoFiQA2018_MaxSim_ndcg@10 NanoHotpotQA_MaxSim_ndcg@10 NanoMSMARCO_MaxSim_ndcg@10 NanoNQ_MaxSim_ndcg@10 NanoSCIDOCS_MaxSim_ndcg@10 NanoBEIR_mean_MaxSim_ndcg@10
0.0014 20 0.0332 - - - - - - -
0.0029 40 0.0297 - - - - - - -
0.0043 60 0.0285 - - - - - - -
0.0058 80 0.0289 - - - - - - -
0.0072 100 0.0278 - - - - - - -
0.0087 120 0.0271 - - - - - - -
0.0101 140 0.0267 - - - - - - -
0.0116 160 0.0269 - - - - - - -
0.0130 180 0.0264 - - - - - - -
0.0144 200 0.0262 - - - - - - -
0.0159 220 0.0259 - - - - - - -
0.0173 240 0.026 - - - - - - -
0.0188 260 0.0251 - - - - - - -
0.0202 280 0.025 - - - - - - -
0.0217 300 0.025 - - - - - - -
0.0231 320 0.0261 - - - - - - -
0.0246 340 0.0249 - - - - - - -
0.0260 360 0.0249 - - - - - - -
0.0274 380 0.0243 - - - - - - -
0.0289 400 0.0245 - - - - - - -
0.0303 420 0.0247 - - - - - - -
0.0318 440 0.0245 - - - - - - -
0.0332 460 0.0234 - - - - - - -
0.0347 480 0.0235 - - - - - - -
0.0361 500 0.0245 0.6352 0.3462 0.7674 0.5245 0.6220 0.2769 0.5287
0.0375 520 0.0244 - - - - - - -
0.0390 540 0.0233 - - - - - - -
0.0404 560 0.0239 - - - - - - -
0.0419 580 0.0232 - - - - - - -
0.0433 600 0.0225 - - - - - - -
0.0448 620 0.0234 - - - - - - -
0.0462 640 0.0245 - - - - - - -
0.0477 660 0.0229 - - - - - - -
0.0491 680 0.0232 - - - - - - -
0.0505 700 0.023 - - - - - - -
0.0520 720 0.0238 - - - - - - -
0.0534 740 0.0239 - - - - - - -
0.0549 760 0.0229 - - - - - - -
0.0563 780 0.0237 - - - - - - -
0.0578 800 0.0236 - - - - - - -
0.0592 820 0.0224 - - - - - - -
0.0607 840 0.0226 - - - - - - -
0.0621 860 0.0225 - - - - - - -
0.0635 880 0.023 - - - - - - -
0.0650 900 0.0232 - - - - - - -
0.0664 920 0.0224 - - - - - - -
0.0679 940 0.0227 - - - - - - -
0.0693 960 0.0231 - - - - - - -
0.0708 980 0.0238 - - - - - - -
0.0722 1000 0.0224 0.6463 0.3673 0.7878 0.5283 0.6466 0.2869 0.5439

Framework Versions

  • Python: 3.11.12
  • Sentence Transformers: 4.0.2
  • PyLate: 1.2.0
  • Transformers: 4.48.2
  • PyTorch: 2.6.0+cu124
  • Accelerate: 1.6.0
  • Datasets: 3.6.0
  • Tokenizers: 0.21.1

Citation

BibTeX

Sentence Transformers

@inproceedings{reimers-2019-sentence-bert,
    title = "Sentence-BERT: Sentence Embeddings using Siamese BERT-Networks",
    author = "Reimers, Nils and Gurevych, Iryna",
    booktitle = "Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing",
    month = "11",
    year = "2019",
    publisher = "Association for Computational Linguistics",
    url = "https://arxiv.org/abs/1908.10084"
}

PyLate

@misc{PyLate,
title={PyLate: Flexible Training and Retrieval for Late Interaction Models},
author={Chaffin, Antoine and Sourty, Raphaël},
url={https://github.com/lightonai/pylate},
year={2024}
}
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