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Home / Proceedings / Proceedings of the International Conference on Automated Planning and Scheduling

Thinking Ahead in Real-Time Search

February 1, 2023

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Authors

Dana Nau,Ugur Kuter,Emre Sefer

University of Maryland,University of Maryland,University of Maryland


DOI:

10.1609/icaps.v19i1.13353


Abstract:

We consider real-time planning problems in which some states are unsolvable, i.e., have no path to a goal. Such problems are difficult for real-time planning algorithms such as RTA* in which all states must be solvable. We identify a property called k-safeness, in which the consequences of a bad choice become apparent within k moves after the choice is made. When k is not too large, this makes it possible to identify unsolvable states in real time. We provide a modified version of RTA* that is provably complete on all k-safe problems. We derive k-safeness conditions for real-time deterministic versions of the well-known Tireworld and Racetrack domains, and provide experimental results showing that our modified version of RTA* works quite well in these domains.

Topics: ICAPS

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HOW TO CITE:

Dana Nau,Ugur Kuter,Emre Sefer Thinking Ahead in Real-Time Search Proceedings of the International Conference on Automated Planning and Scheduling (2009) 257-264.

Dana Nau,Ugur Kuter,Emre Sefer Thinking Ahead in Real-Time Search ICAPS 2009, 257-264.

Dana Nau,Ugur Kuter,Emre Sefer (2009). Thinking Ahead in Real-Time Search. Proceedings of the International Conference on Automated Planning and Scheduling, 257-264.

Dana Nau,Ugur Kuter,Emre Sefer. Thinking Ahead in Real-Time Search. Proceedings of the International Conference on Automated Planning and Scheduling 2009 p.257-264.

Dana Nau,Ugur Kuter,Emre Sefer. 2009. Thinking Ahead in Real-Time Search. "Proceedings of the International Conference on Automated Planning and Scheduling". 257-264.

Dana Nau,Ugur Kuter,Emre Sefer. (2009) "Thinking Ahead in Real-Time Search", Proceedings of the International Conference on Automated Planning and Scheduling, p.257-264

Dana Nau,Ugur Kuter,Emre Sefer, "Thinking Ahead in Real-Time Search", ICAPS, p.257-264, 2009.

Dana Nau,Ugur Kuter,Emre Sefer. "Thinking Ahead in Real-Time Search". Proceedings of the International Conference on Automated Planning and Scheduling, 2009, p.257-264.

Dana Nau,Ugur Kuter,Emre Sefer. "Thinking Ahead in Real-Time Search". Proceedings of the International Conference on Automated Planning and Scheduling, (2009): 257-264.

Dana Nau,Ugur Kuter,Emre Sefer. Thinking Ahead in Real-Time Search. ICAPS[Internet]. 2009[cited 2023]; 257-264.


ISSN: 2334-0843


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