Jianfei Pan — accepted AI-conference papers

2026

BaseReward: A Strong Baseline for Multimodal Reward Model

YiFan Zhang, Yanghaihua, Huanyu Zhang, Yang Shi, Zezhou Chen, Haochen Tian +8

ICLR 2026poster

The rapid advancement of Multimodal Large Language Models (MLLMs) has made aligning them with human preferences a critical challenge. Reward Models (RMs) are a core technology for achieving this goal, but a systematic guide for building state-of-the-art Multimodal Reward Models (MRMs) is currently l…

Cited by 0 Source ↗Scholar ↗

2026

GTPO and GRPO-S: Token and Sequence-Level Reward Shaping with Policy Entropy

Hongze Tan, Zihan Wang, Jianfei Pan, Jinghao Lin, Hao Wang, Yifan Wu +4

ICML 2026poster

Reinforcement Learning (RL) is pivotal for enhancing Large Language Model (LLM) reasoning, yet mainstream algorithms such as GRPO and DAPO remain constrained by a coarse-grained credit assignment paradigm, where all tokens within the same response receive the identical reward. In this paper, we prop…

Cited by 0 Source ↗Scholar ↗