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README.md

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 library_name: peft
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+This is a self-truthified model proposed in the paper [GRATH: Gradual Self-Truthifying for Large Language Models](https://arxiv.org/abs/2401.12292).
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+Note: This model is applied with DPO once. The reference model of DPO is set as the current base model (i.e., the pretrained base model).
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 ## Training procedure