Initial commit

README.md

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 ---
 license: cc-by-nc-sa-4.0
+pipeline_tag: fill-mask
+language: en
+tags:
+- long_documents
+datasets:
+- c4
+model-index:
+- name: kiddothe2b/longformer-base-4096
+  results: []
 ---
+
+# Longformer / longformer-base-4096
+
+## Model description
+
+[Longformer](https://arxiv.org/abs/2004.05150) is a transformer model for long documents.  This version of Longformer presented in [An Exploration of Hierarchical Attention Transformers for Efficient Long Document Classification (Chalkidis et al., 2022)](https://arxiv.org/abs/xxx). 
+
+The model has been warm-started re-using the weights of RoBERTa (Liu et al., 2019), and continued pre-trained for MLM in long sequences following the paradigm of original Longformer released by Beltagy et al. (2020). It supports sequences of length up to 4,096.
+
+Longformer uses a combination of a sliding window (local) attention and global attention. Global attention is user-configured based on the task to allow the model to learn task-specific representations.
+
+## Intended uses & limitations
+
+You can use the raw model for masked language modeling, but it's mostly intended to be fine-tuned on a downstream task.
+See the [model hub](https://huggingface.co/models?filter=longformer) to look for fine-tuned versions on a task that
+interests you.
+
+Note that this model is primarily aimed at being fine-tuned on tasks that use the whole document to make decisions, such as document classification, sequential sentence classification or question answering.
+
+## How to use
+
+You can use this model directly with a pipeline for masked language modeling:
+
+```python
+from transformers import pipeline
+mlm_model = pipeline('fill-mask', model='kiddothe2b/longformer-base-4096', trust_remote_code=True)
+mlm_model("Hello I'm a <mask> model.")
+```
+
+You can also fine-tun it for SequenceClassification, SequentialSentenceClassification, and MultipleChoice down-stream tasks:
+
+```python
+from transformers import AutoTokenizer, AutoModelforSequenceClassification
+tokenizer = AutoTokenizer.from_pretrained("kiddothe2b/longformer-base-4096", trust_remote_code=True)
+doc_classifier = AutoModelforSequenceClassification(model='kiddothe2b/longformer-base-4096', trust_remote_code=True)
+```
+
+## Limitations and bias
+
+The training data used for this model contains a lot of unfiltered content from the internet, which is far from
+neutral. Therefore, the model can have biased predictions.
+
+
+## Training procedure
+
+### Training and evaluation data
+
+The model has been warm-started from [roberta-base](https://huggingface.co/roberta-base) checkpoint and has been continued pre-trained for additional 50k steps in long sequences (> 1024 subwords) of [C4](https://huggingface.co/datasets/c4) (Raffel et al., 2020).
+
+
+### Training hyperparameters
+
+TThe following hyperparameters were used during training:
+- learning_rate: 0.0001
+- train_batch_size: 16
+- eval_batch_size: 16
+- seed: 42
+- gradient_accumulation_steps: 8
+- total_train_batch_size: 128
+- optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
+- lr_scheduler_type: linear
+- lr_scheduler_warmup_ratio: 0.1
+- training_steps: 50000
+
+### Training results
+
+| Training Loss | Epoch | Step  | Validation Loss | Accuracy |
+|:-------------:|:-----:|:-----:|:---------------:|:--------:|
+| 1.7067        | 0.2   | 10000 | 1.5923          | 0.6714   |
+| 1.6532        | 0.4   | 20000 | 1.5494          | 0.6784   |
+| 1.622         | 0.6   | 30000 | 1.5208          | 0.6830   |
+| 1.588         | 0.8   | 40000 | 1.4880          | 0.6876   |
+| 1.5682        | 1.0   | 50000 | 1.4680          | 0.6908   |
+
+
+### Framework versions
+
+- Transformers 4.19.0.dev0
+- Pytorch 1.11.0
+- Datasets 2.0.0
+- Tokenizers 0.11.6
+
+
+## Citing
+
+If you use this Longformer model in your research, please cite [An Exploration of Hierarchical Attention Transformers for Efficient Long Document Classification](https://arxiv.org/abs/xxx), alongside [Longformer: The Long-Document Transformer](https://arxiv.org/abs/2004.05150).
+
+```
+@misc{chalkidis-etal-2022-hat,
+  url = {https://arxiv.org/abs/xxx},
+  author = {Chalkidis, Ilias and Dai, Xiang and Fergadiotis, Manos and Malakasiotis, Prodromos and Elliott, Desmond},
+  title = {An Exploration of Hierarchical Attention Transformers for Efficient Long Document Classification},
+  publisher = {arXiv},
+  year = {2022},
+}
+
+@article{Beltagy2020Longformer,
+  title={Longformer: The Long-Document Transformer},
+  author={Iz Beltagy and Matthew E. Peters and Arman Cohan},
+  journal={arXiv:2004.05150},
+  year={2020},
+}
+```

all_results.json

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+{
+    "epoch": 1.0,
+    "eval_accuracy": 0.6903300106062856,
+    "eval_loss": 1.4704546928405762,
+    "eval_runtime": 564.333,
+    "eval_samples_per_second": 39.987,
+    "eval_steps_per_second": 2.5,
+    "perplexity": 4.351213156804084,
+    "train_loss": 1.6453681225585937,
+    "train_runtime": 632283.9895,
+    "train_samples_per_second": 10.122,
+    "train_steps_per_second": 0.079
+}

config.json

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+{
+  "_name_or_path": "data/PLMs/longformer-roberta",
+  "architectures": [
+    "LongformerForMaskedLM"
+  ],
+  "attention_mode": "longformer",
+  "attention_probs_dropout_prob": 0.1,
+  "attention_window": [
+    128,
+    128,
+    128,
+    128,
+    128,
+    128,
+    128,
+    128,
+    128,
+    128,
+    128,
+    128
+  ],
+  "bos_token_id": 0,
+  "classifier_dropout": null,
+  "cls_token_id": 0,
+  "eos_token_id": 2,
+  "gradient_checkpointing": false,
+  "hidden_act": "gelu",
+  "hidden_dropout_prob": 0.1,
+  "hidden_size": 768,
+  "ignore_attention_mask": false,
+  "initializer_range": 0.02,
+  "intermediate_size": 3072,
+  "layer_norm_eps": 1e-05,
+  "max_position_embeddings": 4099,
+  "max_sentence_length": 128,
+  "max_sentence_size": 128,
+  "max_sentences": 8,
+  "model_max_length": 4096,
+  "model_type": "longformer",
+  "num_attention_heads": 12,
+  "num_hidden_layers": 12,
+  "pad_token_id": 1,
+  "position_embedding_type": "absolute",
+  "sep_token_id": 2,
+  "torch_dtype": "float32",
+  "transformers_version": "4.18.0",
+  "type_vocab_size": 1,
+  "use_cache": true,
+  "vocab_size": 50265
+}

pytorch_model.bin

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+size 594974811

special_tokens_map.json

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+{"bos_token": "<s>", "eos_token": "</s>", "unk_token": "<unk>", "sep_token": "</s>", "pad_token": "<pad>", "cls_token": "<s>", "mask_token": {"content": "<mask>", "single_word": false, "lstrip": true, "rstrip": false, "normalized": false}}

tokenizer_config.json

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+{"errors": "replace", "bos_token": "<s>", "eos_token": "</s>", "sep_token": "</s>", "cls_token": "<s>", "unk_token": "<unk>", "pad_token": "<pad>", "mask_token": "<mask>", "add_prefix_space": false, "trim_offsets": true, "model_max_length": 512, "special_tokens_map_file": null, "name_or_path": "data/PLMs/longformer-roberta", "tokenizer_class": "RobertaTokenizer"}