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InternLM-XComposer2.5-Reward: A Simple Yet Effective Multi-Modal Reward Model

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arxiv 2501.12368 v2 pith:UJ3YAYQK submitted 2025-01-21 cs.CV cs.CL

Yuhang Zang , Xiaoyi Dong , Pan Zhang , Yuhang Cao , Ziyu Liu , Shengyuan Ding , Shenxi Wu , Yubo Ma
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Haodong Duan Wenwei Zhang Kai Chen Dahua Lin Jiaqi Wang
This is my paper · ORCID
classification cs.CVcs.CL
keywords rewardixc-2multi-modalmodelinstructionlvlmsmodelstraining
verification ladder T0 review T1 audit T2 compute T3 formal
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Despite the promising performance of Large Vision Language Models (LVLMs) in visual understanding, they occasionally generate incorrect outputs. While reward models (RMs) with reinforcement learning or test-time scaling offer the potential for improving generation quality, a critical gap remains: publicly available multi-modal RMs for LVLMs are scarce, and the implementation details of proprietary models are often unclear. We bridge this gap with InternLM-XComposer2.5-Reward (IXC-2.5-Reward), a simple yet effective multi-modal reward model that aligns LVLMs with human preferences. To ensure the robustness and versatility of IXC-2.5-Reward, we set up a high-quality multi-modal preference corpus spanning text, image, and video inputs across diverse domains, such as instruction following, general understanding, text-rich documents, mathematical reasoning, and video understanding. IXC-2.5-Reward achieves excellent results on the latest multi-modal reward model benchmark and shows competitive performance on text-only reward model benchmarks. We further demonstrate three key applications of IXC-2.5-Reward: (1) Providing a supervisory signal for RL training. We integrate IXC-2.5-Reward with Proximal Policy Optimization (PPO) yields IXC-2.5-Chat, which shows consistent improvements in instruction following and multi-modal open-ended dialogue; (2) Selecting the best response from candidate responses for test-time scaling; and (3) Filtering outlier or noisy samples from existing image and video instruction tuning training data. To ensure reproducibility and facilitate further research, we have open-sourced all model weights and training recipes at https://github.com/InternLM/InternLM-XComposer/tree/main/InternLM-XComposer-2.5-Reward

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Cited by 9 Pith papers

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