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Keyframe-based Learning from Demonstration Method and Evaluation
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AI
DOI：10.1007/s12369-012-0160-0.png)
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Abstract
En 中文
We present a framework for learning skills from novel types of demonstrations that have been shown to be desirable from a Human-Robot Interaction perspective. Our approach-Keyframe-based Learning from Demonstration (KLfD)-takes demonstrations that consist of keyframes; a sparse set of points in the state space that produces the intended skill when visited in sequence. The conventional type of trajectory demonstrations or a hybrid of the two are also handled by KLfD through a conversion to keyframes. Our method produces a skill model that consists of an ordered set of keyframe clusters, which we call Sequential Pose Distributions (SPD). The skill is reproduced by splining between clusters. We present results from two domains: mouse gestures in 2D and scooping, pouring and placing skills on a humanoid robot. KLfD has performance similar to existing LfD techniques when applied to conventional trajectory demonstrations. Additionally, we demonstrate that KLfD may be preferable when demonstration type is suited for the skill.
Keywords:
Learning from Demonstration
Kinesthetic teaching
Human-Robot Interaction
Humanoid robotics
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