Author

Feng Chen

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#artificial intelligence Preprint Sep 2026

2AM: Grounding Agent-Side Memory as Guidance for Steerable Action Models in Long-Horizon Manipulation

Long-horizon robot manipulation requires memory, but not necessarily inside the action policy. To address such tasks, current agentic systems often combine VLAs with planners and geometric tools, sometimes using additional depth or calibrated geometry. These systems confound attribution: gains may come from richer obse...

Yu-Tong Hu, Feng Chen, Xue-Zhi Cao et al. · 1 citation · ⚡1

#machine learning Preprint Sep 2026

Entropy-Regularized Rank-Masked Policy Optimization for Test-Time Reinforcement Learning in Code Generation

Existing methods for test-time reinforcement learning (TTRL) derive rewards from answer-level self-voting on unlabeled test-time tasks with canonical answers, but this breaks down for code generation because programs cannot be compared by surface form and therefore do not directly provide a usable training signal. To m...

Jiacheng Xu, Feng Chen, Xiu-Neng Xu et al. · 0 citations