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https://github.com/JetRunner/BERT-of-Theseus
⛵️The official PyTorch implementation for "BERT-of-Theseus: Compressing BERT by Progressive Module Replacing" (EMNLP 2020).
https://github.com/JetRunner/BERT-of-Theseus
bert glue model-compression nlp transformers
Last synced: 6 days ago
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⛵️The official PyTorch implementation for "BERT-of-Theseus: Compressing BERT by Progressive Module Replacing" (EMNLP 2020).
- Host: GitHub
- URL: https://github.com/JetRunner/BERT-of-Theseus
- Owner: JetRunner
- License: apache-2.0
- Created: 2020-02-07T15:52:06.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2023-06-12T21:27:41.000Z (about 1 year ago)
- Last Synced: 2024-03-05T12:35:27.047Z (4 months ago)
- Topics: bert, glue, model-compression, nlp, transformers
- Language: Python
- Homepage:
- Size: 1.04 MB
- Stars: 302
- Watchers: 14
- Forks: 39
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-huggingface - BERT-of-Theseus - Compressing BERT by progressively replacing the components of the original BERT. (🏎️ Model Compression/Acceleration)
- awesome-huggingface - BERT-of-Theseus - Compressing BERT by progressively replacing the components of the original BERT. (🏎️ Model Compression/Acceleration)
README
# BERT-of-Theseus
Code for paper ["BERT-of-Theseus: Compressing BERT by Progressive Module Replacing"](http://arxiv.org/abs/2002.02925).
BERT-of-Theseus is a new compressed BERT by progressively replacing the components of the original BERT.
## Citation
If you use this code in your research, please cite our paper:
```bibtex
@inproceedings{xu-etal-2020-bert,
title = "{BERT}-of-Theseus: Compressing {BERT} by Progressive Module Replacing",
author = "Xu, Canwen and
Zhou, Wangchunshu and
Ge, Tao and
Wei, Furu and
Zhou, Ming",
booktitle = "Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP)",
month = nov,
year = "2020",
address = "Online",
publisher = "Association for Computational Linguistics",
url = "https://www.aclweb.org/anthology/2020.emnlp-main.633",
pages = "7859--7869"
}
```
**NEW:** We have uploaded a script for making predictions on GLUE tasks and preparing for leaderboard submission. Check out [here](https://github.com/JetRunner/BERT-of-Theseus/tree/master/glue_script)!
## How to run BERT-of-Theseus
### Requirement
Our code is built on [huggingface/transformers](https://github.com/huggingface/transformers). To use our code, you must clone and install [huggingface/transformers](https://github.com/huggingface/transformers).
### Compress a BERT
1. You should fine-tune a predecessor model following the [instruction from huggingface](https://github.com/huggingface/transformers/tree/master/examples#glue) and then save it to a directory if you haven't done so.
2. Run compression following the examples below:
```bash
# For compression with a replacement scheduler
export GLUE_DIR=/path/to/glue_data
export TASK_NAME=MRPC
python ./run_glue.py \
--model_name_or_path /path/to/saved_predecessor \
--task_name $TASK_NAME \
--do_train \
--do_eval \
--do_lower_case \
--data_dir "$GLUE_DIR/$TASK_NAME" \
--max_seq_length 128 \
--per_gpu_train_batch_size 32 \
--per_gpu_eval_batch_size 32 \
--learning_rate 2e-5 \
--save_steps 50 \
--num_train_epochs 15 \
--output_dir /path/to/save_successor/ \
--evaluate_during_training \
--replacing_rate 0.3 \
--scheduler_type linear \
--scheduler_linear_k 0.0006
```
```bash
# For compression with a constant replacing rate
export GLUE_DIR=/path/to/glue_data
export TASK_NAME=MRPC
python ./run_glue.py \
--model_name_or_path /path/to/saved_predecessor \
--task_name $TASK_NAME \
--do_train \
--do_eval \
--do_lower_case \
--data_dir "$GLUE_DIR/$TASK_NAME" \
--max_seq_length 128 \
--per_gpu_train_batch_size 32 \
--per_gpu_eval_batch_size 32 \
--learning_rate 2e-5 \
--save_steps 50 \
--num_train_epochs 15 \
--output_dir /path/to/save_successor/ \
--evaluate_during_training \
--replacing_rate 0.5 \
--steps_for_replacing 2500
```
For the detailed description of arguments, please refer to the source code.
## Load Pretrained Model on MNLI
We provide a 6-layer pretrained model on MNLI as a general-purpose model, which can transfer to other sentence classification tasks, outperforming DistillBERT (with the same 6-layer structure) on six tasks of GLUE (dev set).
| Method | MNLI | MRPC | QNLI | QQP | RTE | SST-2 | STS-B |
|-----------------|------|------|------|------|------|-------|-------|
| BERT-base | 83.5 | 89.5 | 91.2 | 89.8 | 71.1 | 91.5 | 88.9 |
| DistillBERT | 79.0 | 87.5 | 85.3 | 84.9 | 59.9 | 90.7 | 81.2 |
| BERT-of-Theseus | 82.1 | 87.5 | 88.8 | 88.8 | 70.1 | 91.8 | 87.8 |
You can easily load our general-purpose model using [huggingface/transformers](https://github.com/huggingface/transformers).
```python
from transformers import AutoTokenizer, AutoModel
tokenizer = AutoTokenizer.from_pretrained("canwenxu/BERT-of-Theseus-MNLI")
model = AutoModel.from_pretrained("canwenxu/BERT-of-Theseus-MNLI")
```
## Bug Report and Contribution
If you'd like to contribute and add more tasks (only GLUE is available at this moment), please submit a pull request and contact me. Also, if you find any problem or bug, please report with an issue. Thanks!
## Third-Party Implementations
We list some third-party implementations from the community here. Please kindly add your implementation to this list:
- `Tensorflow Implementation (tested on NER)`: https://github.com/qiufengyuyi/bert-of-theseus-tf
- `Keras Implementation (tested on text classification)`: https://github.com/bojone/bert-of-theseus