Create README.md

README.md

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+---
+license: apache-2.0
+language:
+- en
+---
+
+# zephyr-7b-beta-ExPO
+
+The extrapolated (ExPO) model based on `HuggingFaceH4/zephyr-7b-beta` and `HuggingFaceH4/mistral-7b-sft-beta`, as in the "[Weak-to-Strong Extrapolation Expedites Alignment](https://arxiv.org/abs/2404.16792)" paper.
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+Specifically, we obtain this model by extrapolating from the weights of the SFT and DPO/RLHF checkpoints, achieving superior alignment with human preference.