Mathematics > Optimization and Control
[Submitted on 2 Aug 2018]
Title:An enhanced formulation for solving graph coloring problems with the Douglas-Rachford algorithm
View PDFAbstract:We study the behavior of the Douglas-Rachford algorithm on the graph vertex-coloring problem. Given a graph and a number of colors, the goal is to find a coloring of the vertices so that all adjacent vertex pairs have different colors. In spite of the combinatorial nature of this problem, the Douglas-Rachford algorithm was recently shown to be a successful heuristic for solving a wide variety of graph coloring instances, when the problem was cast as a feasibility problem on binary indicator variables. In this work we consider a different formulation, based on semidefinite programming. The much improved performance of the Douglas-Rachford algorithm, with this new approach, is demonstrated through various numerical experiments.
Submission history
From: Francisco Javier Aragón Artacho [view email][v1] Thu, 2 Aug 2018 20:56:46 UTC (181 KB)
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