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Jia-Yuan Gu

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#machine learning Preprint Oct 2026

CFG-Policy: Unified Diffusion Policy Learning Framework via Classifier-free Guidance

Diffusion policies are increasingly used in robotic control and manipulation, vision-language-action models, and world-model-based agents. Their ability to represent multimodal action distributions offers rich opportunities for exploration in reinforcement learning (RL). However, optimizing diffusion policies with RL c...

Shu-Tong Ding, Zhao-Yang Liu, Yi-Miao Zhou et al. · 0 citations
#artificial intelligence Preprint Sep 2026

FACT: Fidelity-Aware Construction of Articulated Twins

Experiments show that FACT improves geometric reconstruction over baselines, enables more reliable interaction with simpler collision proxies, and better reproduces held-out physical responses than direct parameter inference.

Kui-Xiang Shao, Chuan-Sen Nie, Yi-Nuo Bai et al. · 0 citations
Preprint Sep 2026

PASSAGE: Scaling Scene-Aligned Motion Learning for Perceptive Humanoid Traversal in Cluttered Environments

PASSAGE, a perception-conditioned planner--tracker framework for humanoid traversal, using virtual reality and inertial motion capture to collect 100 h of scene-aligned human motion across 1,500 cluttered scenes and tests across 50 unseen physical layouts demonstrate traversal without prebuilt maps or offboard computat...

Yuxuan Ma, Zi-Cheng Zeng, Chun-Li Peng et al. · 1 citation

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