A novel local search based on variable-focusing for random K-SAT

Rémi Lemoy; Mikko Alava; Erik Aurell

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arXiv · 1311.2914

A novel local search based on variable-focusing for random K-SAT

Rémi Lemoy·Mikko Alava·Erik Aurell

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Abstract

We introduce a new local search algorithm for satisfiability problems. Usual approaches focus uniformly on unsatisfied clauses. The new method works by picking uniformly random variables in unsatisfied clauses. A Variable-based Focused Metropolis Search (V-FMS) is then applied to random 3-SAT. We show that it is quite comparable in performance to the clause-based FMS. Consequences for algorithmic design are discussed.

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Rémi Lemoy, Mikko Alava, Erik Aurell. 2013-12-12. A novel local search based on variable-focusing for random K-SAT. https://arxiv.org/abs/1311.2914

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