Hardness measures for gridworld benchmarks and performance analysis of real-time heuristic search algorithms

Mizusawa, Masataka; Kurihara, Masahito

Journal of Heuristics, 2010, 16(1), 23-36

Permalink : https://hdl.handle.net/2115/49220

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アクセス権	open access
URI	https://hdl.handle.net/2115/49220
タイトル	Hardness measures for gridworld benchmarks and performance analysis of real-time heuristic search algorithms
著者	著者名 Mizusawa, Masataka
著者	e-Rad_Researcher 50133707 著者名 Kurihara, Masahito
言語	英語
キーワード	real-time search
	gridworlds
	benchmark
	phase transition
発行日	2010-02
出版者	Springer Netherlands
収録物名	Journal of Heuristics
巻(号)	16(1)
ページ	23-36
抄録	Gridworlds are one of the most popular settings used in benchmark problems for real-time heuristic search algorithms. However, no comprehensive studies have existed so far on how the difference in the density of randomly positioned obstacles affects the hardness of the problems. This paper presents two measures for characterizing the hardness of gridworld problems parameterized by obstacle ratio, and relates them to the performance of the algorithms. We empirically show that the peak locations of those measures and actual performance degradation of the basic algorithms (RTA* and LRTA*) almost coincide with each other for a wide variety of problem settings. Thus the measures uncover some interesting aspects of the gridworlds.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	The final publication is available at www.springerlink.com
PISSN	1381-1231
EISSN	1572-9397
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s10732-008-9084-0