Adversarial actor-critic method for task and motion planning problems using planning experience

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We propose an actor-critic algorithm that uses past planning experience to improve the efficiency of solving robot task-and-motion planning (TAMP) problems. TAMP planners search for goal-achieving sequences of high-level operator instances specified by both discrete and continuous parameters. Our algorithm learns a policy for selecting the continuous parameters during search, using a small training set generated from the search trees of previously solved instances. We also introduce a novel fixed-length vector representation for world states with varying numbers of objects with different shapes, based on a set of key robot configurations. We demonstrate experimentally that our method learns more efficiently from less data than standard reinforcement-learning approaches and that using a learned policy to guide a planner results in the improvement of planning efficiency.
Publisher
AAAI Press
Issue Date
2019-01-29
Language
English
Citation

33rd AAAI Conference on Artificial Intelligence, AAAI 2019, 31st Annual Conference on Innovative Applications of Artificial Intelligence, IAAI 2019 and the 9th AAAI Symposium on Educational Advances in Artificial Intelligence, EAAI 2019, pp.8017 - 8024

URI
http://hdl.handle.net/10203/281560
Appears in Collection
RIMS Conference Papers
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