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arXiv 2104.07810cs.LGcs.RO
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具身不匹配条件下模仿学习的skeleton特征补偿

Skeletal Feature Compensation for Imitation Learning with Embodiment Mismatch

The University of Texas at Austin(得克萨斯大学奥斯汀分校);Army Research Laboratory(陆军研究实验室);Sony AI(索尼人工智能)

Eddy Hudson, Garrett Warnell, Faraz Torabi, Peter Stone

摘要:

在模仿学习中,从野外的演示(例如YouTube视频)中学习是一个诱人的目标。然而,为了实现这一目标,模仿学习算法必须处理演示者和学习者可能具有彼此不同的身体的事实。这种情况--“具体化不匹配”--被许多最近的模仿学习算法所忽略。我们提出的模仿学习技术,SILEM(\textbf{S},用于\textbf{I}模仿的骨架特征补偿,\textbf{L}获得\textbf{E}实施例\textbf{M}不匹配),通过引入学习的仿射变换来补偿从学习者和专家获得的骨架特征中的差异,来解决特定类型的实施例失配。我们基于PyBullet的HalfCheetah和Ant创建了玩具域,以评估SILEM对这种类型的实施例不匹配的好处。我们还提供定性和定量的结果,更现实的问题-教学模拟人形代理,包括阿特拉斯从波士顿动力学,通过观察人类的示范走。

英文摘要:

Learning from demonstrations in the wild (e.g. YouTube videos) is a tantalizing goal in imitation learning. However, for this goal to be achieved, imitation learning algorithms must deal with the fact that the demonstrators and learners may have bodies that differ from one another. This condition -- "embodiment mismatch" -- is ignored by many recent imitation learning algorithms. Our proposed imitation learning technique, SILEM (\textbf{S}keletal feature compensation for \textbf{I}mitation \textbf{L}earning with \textbf{E}mbodiment \textbf{M}ismatch), addresses a particular type of embodiment mismatch by introducing a learned affine transform to compensate for differences in the skeletal features obtained from the learner and expert. We create toy domains based on PyBullet's HalfCheetah and Ant to assess SILEM's benefits for this type of embodiment mismatch. We also provide qualitative and quantitative results on more realistic problems -- teaching simulated humanoid agents, including Atlas from Boston Dynamics, to walk by observing human demonstrations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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