Author

Xiaoqian Shen

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Jul 2026

Hybrid Advantage Estimation with Unified Critic for VLM Agentic Reinforcement Learning

This work proposes HyGAE, an actor-critic framework that jointly optimizes token- and turn-level objectives with the hybrid advantage and unified critic and provides an in-depth analysis showing that the exact analytic form of the hybrid advantage and return is crucial for optimization.

Wen-Xuan Zhang, Yu-Hui Wang, Donggang Jia et al. · arXiv.org · 0 citations

Jun 2026

VisReflect: Latent Visual Reflection for Fine-Grained Perception in Long Visual Context

This work proposes **VisReflect**, a simple yet effective framework that improves fine-grained perception in long visual contexts through latent visual reflection, which generates continuous visual reflection that represents question-relevant visual features in the latent space.

Xiaoqian Shen, Mohamed Elhoseiny · arXiv.org · 0 citations