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Author

Xingwei Chen

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#machine learning Preprint Sep 2026

Beyond Appearance Shifts: Task-Semantic Action Calibration for VLA Models

Vision-language-action (VLA) models have achieved strong performance in embodied manipulation, but still lack a clear mechanism to balance behavioral stability with task-semantic sensitivity. We identify two complementary failure modes. Under task-preserving changes, where task semantics remain unchanged but scene appe...

Shuai-Jun Liu, Fei-Yang You, Cheng-Ju Wu et al. · 0 citations
Preprint Aug 2026

When Replanning Becomes the Bottleneck: Budgeted Replanning for Embodied Agents

Embodied agents replan frequently to recover from execution drift, partial observability, and coordination hazards, but each LLM-based replanning call can consume an accumulated textual context that grows over time and across agents. Once this context becomes large, replanning latency develops heavy tails and can miss...

Shuaijun Liu, Feiyang You, Xingwei Chen et al. · 0 citations
Conference Jul 2026

A Large-Language-Model-Oriented Dual-Channel Agent Framework for Intelligent Generation of Simulation Scenarios

Constructing simulation scenarios manually is time-consuming and often depends on platform-specific modeling experience. Existing large-language-model (LLM) methods are promising for interpreting operational documents, but they still struggle with long-document parsing, incomplete platform interfaces, auditable task ex...

Lei Wang, Zhiqiang Fan, Yikang Song et al. · 0 citations

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