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arXiv 2508.19652cs.CV

通过推理分解实现自奖励视觉-语言模型

Self-Rewarding Vision-Language Model via Reasoning Decomposition

Tencent AI Seattle Lab(腾讯AI西雅图实验室);University of Maryland(马里兰大学);Washington University in St. Louis(圣路易斯华盛顿大学)

Zongxia Li, Wenhao Yu, Chengsong Huang, Zhenwen Liang, Rui Liu, Fuxiao Liu, Jingxi Che, Dian Yu, Jordan Boyd-Graber, Haitao Mi, Dong Yu

AI总结:

本文提出Vision SR1,通过分解视觉与语言推理,提升视觉推理能力,减少视觉幻觉和语言捷径依赖,效率优于需外部视觉奖励模型的方法。

摘要:

视觉-语言模型(VLMs)常因视觉幻觉而生成不一致的内容,即依赖语言先验而非视觉输入。本文提出Vision SR1,一种三阶段自奖励强化学习方法,通过分解视觉推理与语言推理,优化两者并通过多奖励损失目标联合训练。模型首先生成自包含的视觉描述回答问题,再通过解耦的奖励-优势框架计算最终奖励,实验表明Vision SR1在多种视觉语言任务中提升了视觉推理能力,减轻了视觉幻觉和语言捷径依赖,且无需额外GPU资源。

英文摘要:

Vision-Language Models (VLMs) often suffer from visual hallucinations: generating things that are not consistent with visual inputs and language shortcuts, where they skip the visual part and just rely on text priors. These issues arise because most post training methods for VLMs rely on simple verifiable answer matching and supervise only final outputs, leaving intermediate visual reasoning without explicit guidance. As a result, VLMs receive sparse visual signals and often learn to prioritize language based reasoning over visual perception. We introduce Vision SR1, a three stage self rewarding reinforcement learning method that improves visual reasoning without relying on external visual supervision. Vision SR1 decomposes VLM reasoning into two components: visual reasoning and language reasoning, where the model is first prompted to produce self-contained visual descriptions sufficient to answer the question without referring back to the input image, before jointly optimizing both visual and language reasoning through our multi reward loss objective. To validate this self containment, the same VLM model is reprompted to perform language reasoning using only the generated visual reasoning as input to compute visual reward. The final reward is computed through a decoupled reward-advantage framework, where visual reward and language reasoning reward each have their advantages calculated separately. Our experiments show that Vision SR1 improves visual reasoning, mitigates visual hallucinations, and reduces reliance on language shortcuts across diverse vision language tasks, while being more efficient than methods that rely on external visual reward models, which require additional GPUs to host. In contrast, Vision SR1 introduces no extra GPU overhead beyond that of standard training.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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