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A comparison of extremal optimization with flat-histogram dynamics for finding spin-glass ground states | | Jian-Sheng Wang
; Yutaka Okabe
; | | Date: |
3 Oct 2002 | | Journal: | J. Phys. Soc. Jpn. {72}, 1380 (2003) | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Abstract: | We compare the performance of extremal optimization (EO), flat-histogram and equal-hit algorithms for finding spin-glass ground states. The first-passage-times to a ground state are computed. At optimal parameter of tau=1.15, EO outperforms other methods for small system sizes, but equal-hit algorithm is competitive to EO, particularly for large systems. Flat-histogram and equal-hit algorithms offer additional advantage that they can be used for equilibrium thermodynamic calculations. We also propose a method to turn EO into a useful algorithm for equilibrium calculations. Keywords: extremal optimization. flat-histogram algorithm, equal-hit algorithm, spin-glass model, ground state. | | Source: | arXiv, cond-mat/0210075 | | Services: | Forum | Review | PDF | Favorites | |
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