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license: apache-2.0 |
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license: apache-2.0 |
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**Paper**: [Adapting Language Models to Compress Contexts](https://arxiv.org/abs/2305.14788) |
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**Code**: https://github.com/princeton-nlp/AutoCompressors |
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**Models**: |
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- Llama-2-7b fine-tuned models: [AutoCompressor-Llama-2-7b-6k](https://huggingface.co/princeton-nlp/AutoCompressor-Llama-2-7b-6k/), [FullAttention-Llama-2-7b-6k](https://huggingface.co/princeton-nlp/FullAttention-Llama-2-7b-6k) |
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- OPT-2.7b fine-tuned models: [AutoCompressor-2.7b-6k](https://huggingface.co/princeton-nlp/AutoCompressor-2.7b-6k), [AutoCompressor-2.7b-30k](https://huggingface.co/princeton-nlp/AutoCompressor-2.7b-30k), [RMT-2.7b-8k](https://huggingface.co/princeton-nlp/RMT-2.7b-8k), [FullAttention-2.7b-4k](https://huggingface.co/princeton-nlp/FullAttention-2.7b-4k) |
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- OPT-1.3b fine-tuned models: [AutoCompressor-1.3b-30k](https://huggingface.co/princeton-nlp/AutoCompressor-1.3b-30k), [RMT-1.3b-30k](https://huggingface.co/princeton-nlp/RMT-1.3b-30k) |
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--- |
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AutoCompressor-2.7b-6k is a model fine-tuned from [facebook/opt-2.7b](https://huggingface.co/facebook/opt-2.7b) following the AutoCompressor method in [Adapting Language Models to Compress Contexts](https://arxiv.org/abs/2305.14788). |
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This model is fine-tuned on 2B tokens from [The Pile](https://pile.eleuther.ai). The pre-trained OPT-2.7b model is fine-tuned on sequences of 6,144 tokens with 50 summary vectors, summary accumulation, randomized segmenting, and stop-gradients. |
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To get started, download the [`AutoCompressor`](https://github.com/princeton-nlp/AutoCompressors) repository and load the model as follows: |
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``` |
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from auto_compressor import AutoCompressorModel |
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model = AutoCompressorModel.from_pretrained("princeton-nlp/AutoCompressor-2.7b-6k") |
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``` |
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**Evaluation** |
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We record the perplexity achieved by our OPT-2.7b models on segments of 2048 tokens, conditioned on different amounts of context. |
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FullAttention-2.7-4k uses full uncompressed contexts whereas AutoCompressor-2.7b-6k and RMT-2.7b-8k compress segments of 2048 tokens into 50 summary vectors. |
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*In-domain Evaluation* |
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| Context Tokens | 0 |512 | 2048 | 4096 | 6144 | |
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| -----------------------------|-----|-----|------|------|------| |
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| FullAttention-2.7b-4k | 6.57|6.15 |5.94 |- |- | |
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| RMT-2.7b-8k | 6.34|6.19 |6.02 | 6.02 | 6.01 | |
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| AutoCompressor-2.7b-6k | 6.31|6.04 | 5.98 | 5.94 | 5.93 | |
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*Out-of-domain Evaluation* |
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| Context Tokens | 0 |512 | 2048 | 4096 | 6144 | |
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| -----------------------------|-----|-----|------|------|------| |
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| FullAttention-2.7b-4k | 8.94|8.28 |7.93 |- |- | |
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| RMT-2.7b-8k | 8.62|8.44 |8.21 | 8.20 | 8.20 | |
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| AutoCompressor-2.7b-6k | 8.60|8.26 | 8.17 | 8.12 | 8.10 | |
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See [Adapting Language Models to Compress Contexts](https://arxiv.org/abs/2305.14788) for more evaluations, including evaluation on 11 in-context learning tasks. |
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## Bibtex |
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``` |
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@misc{chevalier2023adapting, |
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title={Adapting Language Models to Compress Contexts}, |
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author={Alexis Chevalier and Alexander Wettig and Anirudh Ajith and Danqi Chen}, |
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year={2023}, |
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eprint={2305.14788}, |
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archivePrefix={arXiv}, |
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primaryClass={cs.CL} |
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} |
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``` |
