Sample-Based Methods for Factored Task and Motion Planning

© 2017 MIT Press Journals. All rights reserved. There has been a great deal of progress in developing probabilistically complete methods that move beyond motion planning to multi-modal problems including various forms of task planning. This paper presents a general-purpose formulation of a large cla...

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Bibliographic Details
Main Authors: Garrett, Caelan (Author), Lozano-Perez, Tomas (Author), Kaelbling, Leslie (Author)
Format: Article
Language:English
Published: Robotics: Science and Systems Foundation, 2021-11-08T16:28:52Z.
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Summary:© 2017 MIT Press Journals. All rights reserved. There has been a great deal of progress in developing probabilistically complete methods that move beyond motion planning to multi-modal problems including various forms of task planning. This paper presents a general-purpose formulation of a large class of discrete-time planning problems, with hybrid state and action spaces. The formulation characterizes conditions on the submanifolds in which solutions lie, leading to a characterization of robust feasibility that incorporates dimensionality-reducing constraints. It then connects those conditions to corresponding conditional samplers that are provided as part of a domain specification. We present domain-independent sample-based planning algorithms and show that they are both probabilistically complete and computationally efficient on a set of challenging benchmark problems.