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Expert-Specialized Fine-Tuning

Official Repo for paper Let the Expert Stick to His Last: Expert-Specialized Fine-Tuning for Sparse Architectural Large Language Models by Zihan Wang, Deli Chen, Damai Dai, Runxin Xu, Zhuoshu Li and Y. Wu.

ESFT aims to efficiently customize Large Language Models (LLMs) with Mixture-of-Experts (MoE) architecture by adjusting only task-relevant parts, improving efficiency and performance while using fewer resources and storage.

🚀 Quick Start

Installation and Setup

git clone https://github.com/deepseek-ai/ESFT.git
cd esft

Install required dependencies

pip install transformers torch safetensors

Download necessary adapters

bash scripts/download_adapters.sh

🔧Key Scripts

eval.py This script evaluates the performance of the model on various datasets. Usage:

python scripts/eval.py \
    --eval_datasets=translation \
    --base_model_path=deepseek-ai/ESFT-vanilla-lite \
    --adapter_dir=all_models/adapters/token \
    --output_dir=results/completions/token \
    --max_new_tokens=512 \
    --openai_api_key=REPLACE_WITH_YOUR_KEY \
    --eval_batch_size=2

get_expert_scores.py This script calculates the scores for each expert based on the evaluation datasets. Usage:

python scripts/get_expert_scores.py \
    --eval_datasets=intent,summary,law,translation \
    --base_model_path=deepseek-ai/ESFT-vanilla-lite \
    --output_dir=results/expert_scores \
    --n_sample_tokens=8192 # the sample size hyperparameter

generate_expert_config.py This script generates the configuration to convert a MoE model with only task-relevant tasks trained based on evaluation scores. Usage:

python scripts/generate_expert_config.py \
    --eval_datasets=intent,summary,law,translation \
    --expert_scores_dir=results/expert_scores \
    --output_dir=results/expert_configs \
    --score_function=token \
    --top_p=0.2 # the scoring function and top_p are hyperparameters

Contact and Support

For bug reports, feature requests, and general inquiries, please open an issue on our GitHub Issues page. Make sure to include as much detail as possible to help us address your issue quickly.

🌟Todo list

☑️ 📝 Update models, evaluation scripts, and expert selection scripts
🔲 🔧 Update training scripts
🔲 🚀 More...

📚Citation

If you find our code or paper useful, please cite:

@article{wang2024letexpertsticklast,
      title={Let the Expert Stick to His Last: Expert-Specialized Fine-Tuning for Sparse Architectural Large Language Models}, 
      author={Zihan Wang and Deli Chen and Damai Dai and Runxin Xu and Zhuoshu Li and Y. Wu},
      year={2024},
      eprint={2407.01906},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2407.01906}, 
}

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