When Abstractions Met Landmarks

author: Carmel Domshlak, Technion - Israel Institute of Technology
published: Nov. 15, 2010,   recorded: May 2010,   views: 2847


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Abstractions and landmarks are two powerful mechanisms for devising admissible heuristics for classical planning. Here we aim at putting them together by integrating landmark information into abstractions, and propose a concrete realization of this direction suitable for structural-pattern abstractions, as well as for other abstraction heuristics. Our empirical evaluation shows that landmark information can substantially improve the quality of abstraction heuristic estimates.

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