Sihong Xie
2 indexed papers
Recent (6 mo)
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226
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AI×2Robotics×1
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2026
Deconstructing Spatial Complexity: Hierarchical Decomposition for LLM Spatial Reasoning
This paper introduces MCTS-Guided Group Relative Policy Optimization (M-GRPO) to enhance LLM spatial reasoning by improving the decomposition of complex tasks into optimal sub-tasks.
PSG-Nav: Probabilistic Scene Graph Navigation via Multiverse Decision Making
PSG-Nav addresses open-vocabulary navigation uncertainty by constructing a 3D Probabilistic Scene Graph and using Multiverse Decision Making to sample multiple possible world settings for robust, globally optimal path planning.
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Papers
cs.ROcs.AIRecentMay 31, 2026
PSG-Nav: Probabilistic Scene Graph Navigation via Multiverse Decision Making
Rufeng Chen, Yue Chang, Xiaqiang Tang, Hechang Chen +1 more
PSG-Nav addresses open-vocabulary navigation uncertainty by constructing a 3D Probabilistic Scene Graph and using Multiverse Decision Making to sample multiple possible world settings for robust, glob…
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cs.AIRecentMay 27, 2026