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Unsolvability Certificates for Classical Planning

Eriksson, Salomé and Röger, Gabriele and Helmert, Malte. (2017) Unsolvability Certificates for Classical Planning. In: Proceedings of the 27th International Conference on Automated Planning and Scheduling (ICAPS 2017).

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Official URL: https://edoc.unibas.ch/59251/

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Abstract

The plans that planning systems generate for solvable planning tasks are routinely verified by independent validation tools. For unsolvable planning tasks, no such validation capabilities currently exist. We describe a family of certificates of unsolvability for classical planning tasks that can be efficiently verified and are sufficiently general for a wide range of planning approaches including heuristic search with delete relaxation, critical-path, pattern database and linear merge-and-shrink heuristics, symbolic search with binary decision diagrams, and the Trapper algorithm for detecting dead ends. We also augmented a classical planning system with the ability to emit certificates of unsolvability and implemented a planner-independent certificate validation tool. Experiments show that the overhead for producing such certificates is tolerable and that their validation is practically feasible.
Faculties and Departments:05 Faculty of Science > Departement Mathematik und Informatik > Informatik > Artificial Intelligence (Helmert)
UniBasel Contributors:Eriksson, Salomé and Röger, Gabriele and Helmert, Malte
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Publisher:AAAI Press
Note:Publication type according to Uni Basel Research Database: Conference paper
Language:English
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Last Modified:09 Feb 2018 15:14
Deposited On:09 Feb 2018 15:14

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