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25 April 2024
 
  » arxiv » cond-mat/0009417

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Typical solution time for a vertex-covering algorithm on finite-connectivity random graphs
Martin Weigt ; Alexander K. Hartmann ;
Date 27 Sep 2000
Journal Phys. Rev. Lett. 86, 1658 (2001)
Subject Disordered Systems and Neural Networks; Statistical Mechanics; Computational Complexity | cond-mat.dis-nn cond-mat.stat-mech cs.CC
AbstractIn this letter, we analytically describe the typical solution time needed by a backtracking algorithm to solve the vertex-cover problem on finite-connectivity random graphs. We find two different transitions: The first one is algorithm-dependent and marks the dynamical transition from linear to exponential solution times. The second one gives the maximum computational complexity, and is found exactly at the threshold where the system undergoes an algorithm-independent phase transition in its solvability. Analytical results are corroborated by numerical simulations.
Source arXiv, cond-mat/0009417
Other source [GID 792192] pmid11290217
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