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Calibrating the Confidence of Large Language Models by Eliciting Fidelity
April 4, 2024, 4:47 a.m. | Mozhi Zhang, Mianqiu Huang, Rundong Shi, Linsen Guo, Chong Peng, Peng Yan, Yaqian Zhou, Xipeng Qiu
cs.CL updates on arXiv.org arxiv.org
Abstract: Large language models optimized with techniques like RLHF have achieved good alignment in being helpful and harmless. However, post-alignment, these language models often exhibit overconfidence, where the expressed confidence does not accurately calibrate with their correctness rate. In this paper, we decompose the language model confidence into the \textit{Uncertainty} about the question and the \textit{Fidelity} to the answer generated by language models. Then, we propose a plug-and-play method to estimate the confidence of language models. …
abstract alignment arxiv confidence cs.cl fidelity good however language language model language models large language large language models paper rate rlhf type
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