Mitigating Large Language Model Hallucination with Faithful Finetuning

Fuente: arXiv
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Main Authors: Hu, Minda, He, Bowei, Wang, Yufei, Li, Liangyou, Ma, Chen, King, Irwin
Format: Preprint
Published: 2024
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_version_ 1866909225300525056
author Hu, Minda
He, Bowei
Wang, Yufei
Li, Liangyou
Ma, Chen
King, Irwin
author_facet Hu, Minda
He, Bowei
Wang, Yufei
Li, Liangyou
Ma, Chen
King, Irwin
contents Large language models (LLMs) have demonstrated remarkable performance on various natural language processing tasks. However, they are prone to generating fluent yet untruthful responses, known as "hallucinations". Hallucinations can lead to the spread of misinformation and cause harm in critical applications. Mitigating hallucinations is challenging as they arise from factors such as noisy data, model overconfidence, lack of knowledge, and the generation process itself. Recent efforts have attempted to address this issue through representation editing and decoding algorithms, reducing hallucinations without major structural changes or retraining. However, these approaches either implicitly edit LLMs' behavior in latent space or suppress the tendency to output unfaithful results during decoding instead of explicitly modeling on hallucination. In this work, we introduce Faithful Finetuning (F2), a novel method that explicitly models the process of faithful question answering through carefully designed loss functions during fine-tuning. We conduct extensive experiments on popular datasets and demonstrate that F2 achieves significant improvements over vanilla models and baselines.
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id arxiv_https___arxiv_org_abs_2406_11267
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Mitigating Large Language Model Hallucination with Faithful Finetuning
Hu, Minda
He, Bowei
Wang, Yufei
Li, Liangyou
Ma, Chen
King, Irwin
Computation and Language
Large language models (LLMs) have demonstrated remarkable performance on various natural language processing tasks. However, they are prone to generating fluent yet untruthful responses, known as "hallucinations". Hallucinations can lead to the spread of misinformation and cause harm in critical applications. Mitigating hallucinations is challenging as they arise from factors such as noisy data, model overconfidence, lack of knowledge, and the generation process itself. Recent efforts have attempted to address this issue through representation editing and decoding algorithms, reducing hallucinations without major structural changes or retraining. However, these approaches either implicitly edit LLMs' behavior in latent space or suppress the tendency to output unfaithful results during decoding instead of explicitly modeling on hallucination. In this work, we introduce Faithful Finetuning (F2), a novel method that explicitly models the process of faithful question answering through carefully designed loss functions during fine-tuning. We conduct extensive experiments on popular datasets and demonstrate that F2 achieves significant improvements over vanilla models and baselines.
title Mitigating Large Language Model Hallucination with Faithful Finetuning
topic Computation and Language
url https://arxiv.org/abs/2406.11267