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Optimal Union-Find in Constraint Handling Rules

Tom Schrijvers·Thom Fruehwirth
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Abstract

Constraint Handling Rules (CHR) is a committed-choice rule-based language that was originally intended for writing constraint solvers. In this paper we show that it is also possible to write the classic union-find algorithm and variants in CHR. The programs neither compromise in declarativeness nor efficiency. We study the time complexity of our programs: they match the almost-linear complexity of the best known imperative implementations. This fact is illustrated with experimental results.

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BibTeXRIS

Tom Schrijvers, Thom Fruehwirth. 2005-01-25. Optimal Union-Find in Constraint Handling Rules. https://arxiv.org/abs/cs/0501073

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