KnowRL: Exploring Knowledgeable Reinforcement Learning for Factuality

Fuente: arXiv
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Main Authors: Ren, Baochang, Qiao, Shuofei, Zheng, Da, Chen, Huajun, Zhang, Ningyu
Format: Preprint
Published: 2025
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_version_ 1866914477893484544
author Ren, Baochang
Qiao, Shuofei
Zheng, Da
Chen, Huajun
Zhang, Ningyu
author_facet Ren, Baochang
Qiao, Shuofei
Zheng, Da
Chen, Huajun
Zhang, Ningyu
contents Large Language Models (LLMs), particularly slow-thinking models, often exhibit severe hallucination, outputting incorrect content due to an inability to accurately recognize knowledge boundaries during reasoning. While Reinforcement Learning (RL) can enhance complex reasoning abilities, its outcome-oriented reward mechanism often lacks factual supervision over the thinking process, further exacerbating the hallucination problem. To address the high hallucination in slow-thinking models, we propose Knowledge-enhanced RL, KnowRL. KnowRL guides models to perform fact-based slow thinking by integrating a factuality reward, based on knowledge verification, into the RL training process, helping them recognize their knowledge boundaries. KnowRL guides models to perform fact-based slow thinking by integrating a factuality reward, based on knowledge verification, into the RL training process, helping them recognize their knowledge boundaries. This targeted factual input during RL training enables the model to learn and internalize fact-based reasoning strategies. By directly rewarding adherence to facts within the reasoning steps, KnowRL fosters a more reliable thinking process. Experimental results on three hallucination evaluation datasets and two reasoning evaluation datasets demonstrate that KnowRL effectively mitigates hallucinations in slow-thinking models while maintaining their original strong reasoning capabilities. Our code is available at https://github.com/zjunlp/KnowRL.
format Preprint
id arxiv_https___arxiv_org_abs_2506_19807
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle KnowRL: Exploring Knowledgeable Reinforcement Learning for Factuality
Ren, Baochang
Qiao, Shuofei
Zheng, Da
Chen, Huajun
Zhang, Ningyu
Artificial Intelligence
Computation and Language
Computer Vision and Pattern Recognition
Machine Learning
Multiagent Systems
Large Language Models (LLMs), particularly slow-thinking models, often exhibit severe hallucination, outputting incorrect content due to an inability to accurately recognize knowledge boundaries during reasoning. While Reinforcement Learning (RL) can enhance complex reasoning abilities, its outcome-oriented reward mechanism often lacks factual supervision over the thinking process, further exacerbating the hallucination problem. To address the high hallucination in slow-thinking models, we propose Knowledge-enhanced RL, KnowRL. KnowRL guides models to perform fact-based slow thinking by integrating a factuality reward, based on knowledge verification, into the RL training process, helping them recognize their knowledge boundaries. KnowRL guides models to perform fact-based slow thinking by integrating a factuality reward, based on knowledge verification, into the RL training process, helping them recognize their knowledge boundaries. This targeted factual input during RL training enables the model to learn and internalize fact-based reasoning strategies. By directly rewarding adherence to facts within the reasoning steps, KnowRL fosters a more reliable thinking process. Experimental results on three hallucination evaluation datasets and two reasoning evaluation datasets demonstrate that KnowRL effectively mitigates hallucinations in slow-thinking models while maintaining their original strong reasoning capabilities. Our code is available at https://github.com/zjunlp/KnowRL.
title KnowRL: Exploring Knowledgeable Reinforcement Learning for Factuality
topic Artificial Intelligence
Computation and Language
Computer Vision and Pattern Recognition
Machine Learning
Multiagent Systems
url https://arxiv.org/abs/2506.19807