Weight Redistribution for Unweighted MAX-SAT

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Author(s)
Ishtaiwi, Abdelraouf
Thornton, John
Sattar, Abdul
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Orgun, MA

Thornton, J

Date
2007
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188340 bytes

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Gold Coast, AUSTRALIA

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Abstract

Many real-world problems are over-constrained and require search techniques adapted to optimising cost functions rather than search- ing for consistency. This makes the MAX-SAT problem an important area of research for the satisility (SAT) community. In this study we perform an empirical analysis of several of the best performing SAT local search techniques in the domain of unweighted MAX-SAT. In particular, we test two of the most recently developed SAT clause weight redistri- bution algorithms, DDFW and DDFW+, against three more well-known techniques (RSAPS, AdaptNovelty+ and PAWS). Based on an empir- ical study across a range of previously studied problems we conclude that DDFW is the most promising algorithm in terms of robust average performance.

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AI 2007: ADVANCES IN ARTIFICIAL INTELLIGENCE, PROCEEDINGS

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4830

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© 2007 Springer. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. The original publication is available at www.springerlink.com.

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