Author

He Zhang

h-index 1 View on Semantic Scholar

3 papers indexed here

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

#artificial intelligence Feb 2026

Unveiling Implicit Advantage Symmetry: Why GRPO Struggles with Exploration and Difficulty Adaptation

This work identifies an implicit advantage symmetry inherent in Group Relative Advantage Estimation (GRAE) as a structural property that provides a new perspective for understanding bottlenecks in reinforcement learning, and proposes Asymmetric GRAE (A-GRAE), which dynamically modulates exploration incentives and sampl...

Zhiqiu Yu, Zhangquan Chen, Meng-Ting Liu et al. · arXiv.org · 6 citations

#robotics Preprint Jul 2026

Source-Lifted Flow Matching for Intervenable Multimodal Imitation

Flow-matching policies are promising for imitation learning because they model complex multimodal action distributions. However, their stochasticity is largely passive: repeated sampling may yield diverse behaviors, but users cannot directly choose among valid continuations from the same state. We propose Source-Lifted...

He Zhang, Ying Sun, Pengteng Li et al. · 0 citations

Preprint Aug 2026

How Should Vision-Language-Action Models Use Proprioceptive State?

Five representative interfaces are implemented -- discrete state prompt, VLM prefix, action prefix, state expert, and feature modulation -- under matched implementation details, and evaluated on 45 atomic tasks spanning three task families plus 20 composite tasks.

Yiren Zhao, Ziyang Chen, Zi-Yang Rao et al. · 0 citations