Author

Qi Gu

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Preprint Aug 2026

UrbanGround: From Local Perception to Spatial Agency in a Real-Scale City

This paper proposes UrbanGround, the first sandbox to make this question testable in a physically constrained replica of Hong Kong built from territory-wide 3D geospatial data, and hopes it will support broader study of how far current MLLM agents can explore reliably in complex, open-ended urban environments.

Tianjie Ju, Zheng Wu, Yueqing Sun et al. · 0 citations

Preprint Jul 2026

CAST: Game Solvers as Turn-Level Teachers for LLM Agents

CAST (Credit Assignment from Solver Teachers), which converts value changes in a game solver's state value into solver advantages and injects them into RLVR as turn-level signals and achieves the highest average zero-shot performance on ALFWorld and WebShop.

Yu Wang, Yi-Kai Zhang, Wentao Shi et al. · 0 citations

Preprint Aug 2026

AgentOPSD: Recursive Self-Distillation for Agentic Reinforcement Learning

This work proposes AgentOPSD, a critic-free, recursive method for turn-level credit assignment in agentic reinforcement learning that aggregates token-level teacher-student log-probability gaps into turn-level evidence and recursively updates a Bayesian belief state in log-odds space.

Zi-Han Wang, Zhengxi Lu, Zhiyuan Yao et al. · 1 citation