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Poster

Hierarchical World Models as Visual Whole-Body Humanoid Controllers

Nick Hansen · Jyothir S V · Vlad Sobal · Yann LeCun · Xiaolong Wang · Hao Su

Hall 3 + Hall 2B #400
[ ] [ Project Page ]
Wed 23 Apr 7 p.m. PDT — 9:30 p.m. PDT

Abstract:

Whole-body control for humanoids is challenging due to the high-dimensional nature of the problem, coupled with the inherent instability of a bipedal morphology. Learning from visual observations further exacerbates this difficulty. In this work, we explore highly data-driven approaches to visual whole-body humanoid control based on reinforcement learning, without any simplifying assumptions, reward design, or skill primitives. Specifically, we propose a hierarchical world model in which a high-level agent generates commands based on visual observations for a low-level agent to execute, both of which are trained with rewards. Our approach produces highly performant control policies in 8 tasks with a simulated 56-DoF humanoid, while synthesizing motions that are broadly preferred by humans. Code and videos: https://www.nicklashansen.com/rlpuppeteer

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