Abstract
Max Restricted Path Consistency (maxRPC) is a promising domain filtering consistency for binary constraints. In existing algorithms, the process of searching for PC-witnesses requires most constraint checks. And the computing speed of this process significantly affects the efficiency of the whole algorithm. In this paper, we propose a new method based on bitwise operations to speed up the computations of this process. Two algorithms maxRPCbit and maxRPCbit + rm utilizing this new method are proposed. Both algorithms and their light versions outperform the best ones among existing algorithms by a large margin. Significantly, our experiments, which compare the search algorithms applying light maxRPC with the one maintaining arc consistency, demonstrate that maxRPC is a much more promising filtering technique than what we thought.
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Guo, J., Li, Z., Zhang, L., Geng, X. (2011). MaxRPC Algorithms Based on Bitwise Operations. In: Lee, J. (eds) Principles and Practice of Constraint Programming – CP 2011. CP 2011. Lecture Notes in Computer Science, vol 6876. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23786-7_29
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DOI: https://doi.org/10.1007/978-3-642-23786-7_29
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