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Inferring team task plans from human meetings: A generative modeling approach with logic-based prior

Author(s)
Kim, Been; Chacha, Caleb M.; Shah, Julie A.
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Abstract
We aim to reduce the burden of programming and deploying autonomous systems to work in concert with people in time-critical domains such as military field operations and disaster response. Deployment plans for these operations are frequently negotiated on-the-fly by teams of human planners. A human operator then translates the agreed-upon plan into machine instructions for the robots. We present an algorithm that reduces this translation burden by inferring the final plan from a processed form of the human team's planning conversation. Our hybrid approach combines probabilistic generative modeling with logical plan validation used to compute a highly structured prior over possible plans, enabling us to overcome the challenge of performing inference over a large solution space with only a small amount of noisy data from the team planning session. We validate the algorithm through human subject experimentations and show that it is able to infer a human team's final plan with 86% accuracy on average. We also describe a robot demonstration in which two people plan and execute a first-response collaborative task with a PR2 robot. To the best of our knowledge, this is the first work to integrate a logical planning technique within a generative model to perform plan inference.
Date issued
2015-03
URI
http://hdl.handle.net/1721.1/97138
Department
Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory; Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Journal
Journal of Artificial Intelligence Research
Publisher
Association for the Advancement of Artificial Intelligence
Citation
Kim, Been, Caleb M. Chacha, and Julie A. Shah. "Inferring team task plans from human meetings: A generative modeling approach with logic-based prior." Journal of Artificial Intelligence Research 52 (2015): 361-398. © 2015 AI Access Foundation
Version: Final published version
ISSN
1943-5037
1076-9757

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