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Optimization Algorithms Based on Renormalization Group

Naoki Kawashima

cond-mat.dis-nnarXiv:cond-mat/9911142

Abstract

Global changes of states are of crucial importance in optimization algorithms. We review some heuristic algorithms in which global updates are realized by a sort of real-space renormalization group transformation. Emphasis is on the relationship between the structure of low-energy excitations and ``block-spins'' appearing in the algorithms. We also discuss the implication of existence of a finite-temperature phase transition on the computational complexity of the ground-state problem.

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