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# PEFT |
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🤗 PEFT, or Parameter-Efficient Fine-Tuning (PEFT), is a library for efficiently adapting pre-trained language models (PLMs) to various downstream applications without fine-tuning all the model's parameters. |
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PEFT methods only fine-tune a small number of (extra) model parameters, significantly decreasing computational and storage costs because fine-tuning large-scale PLMs is prohibitively costly. |
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Recent state-of-the-art PEFT techniques achieve performance comparable to that of full fine-tuning. |
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PEFT is seamlessly integrated with 🤗 Accelerate for large-scale models leveraging DeepSpeed and [Big Model Inference](https://huggingface.co/docs/accelerate/usage_guides/big_modeling). |
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Supported methods include: |
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1. LoRA: [LORA: LOW-RANK ADAPTATION OF LARGE LANGUAGE MODELS](https://arxiv.org/pdf/2106.09685.pdf) |
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2. Prefix Tuning: [Prefix-Tuning: Optimizing Continuous Prompts for Generation](https://aclanthology.org/2021.acl-long.353/), [P-Tuning v2: Prompt Tuning Can Be Comparable to Fine-tuning Universally Across Scales and Tasks](https://arxiv.org/pdf/2110.07602.pdf) |
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3. P-Tuning: [GPT Understands, Too](https://arxiv.org/pdf/2103.10385.pdf) |
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4. Prompt Tuning: [The Power of Scale for Parameter-Efficient Prompt Tuning](https://arxiv.org/pdf/2104.08691.pdf) |
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