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Shang-Hang Zhang

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#artificial intelligence Preprint Sep 2026

ActiveArena: Benchmarking and Understanding Active Perception in Robotic Manipulation

Active perception and manipulation are crucial for robots to interact with complex scenes. Existing benchmarks struggle to evaluate how robots effectively acquire and maintain information in memory in an active manner. To this end, we introduce ActiveArena-Sim, an active-perception simulator with controllable viewpoint...

Yi-Bo Li, En-Shen Zhou, Rui Chen et al. · 1 citation
Preprint Aug 2026

Do Robotic World Models Really Follow Actions? Diagnosing and Aligning Action-Conditioned Generation for Policy Learning

Action-conditioned world models are increasingly used as learned simulators for policy evaluation and improvement, yet their effectiveness rests on an unverified assumption: generated futures faithfully reflect arbitrary valid actions. Existing benchmarks are typically confined to expert demonstrations, leaving off-exp...

Si-Xiang Chen, Jia-Ming Liu, Ji-Xin Wu et al. · 0 citations
Preprint Aug 2026

WorldSimProbe: Diagnosing Simulator Faithfulness in Action-Conditioned World Models for Embodied Manipulation

This work formalizes Observable Simulator Contract, a minimal contract that any action-conditioned physical simulator should satisfy: supplied actions must induce corresponding agent motion, and environment responses must be grounded in that realized motion.

P. Co, Sichen Hu, Chun-Xuan Jiao et al. · 1 citation
Preprint Aug 2026

Robo-Dopamine 2.0: History-Conditioned and OOD-Aware Process Reward Modeling for Robotic Manipulation

This work introduces Robo-Dopamine 2.0, a history- and OOD-aware process reward model with a pairwise prediction interface that combines history-conditioned pairwise rewards that use source-aligned reference panels for synthetic OOD queries and observed rollout history for online queries, while preserving the queried e...

Yijie Xu, Hao-Peng Jin, Run Zhou et al. · 1 citation

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