Matching problems with delta-matroid constraints

  • Authors:
  • Naonori Kakimura;Mizuyo Takamatsu

  • Affiliations:
  • University of Tokyo, Tokyo, Japan;Chuo University, Tokyo, Japan

  • Venue:
  • CATS '12 Proceedings of the Eighteenth Computing: The Australasian Theory Symposium - Volume 128
  • Year:
  • 2012

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Abstract

Given an undirected graph G = (V, E) and a directed graph D = (V, A), the master/slave matching problem is to find a matching of maximum cardinality in G such that for each arc (u, v) ε A with u being matched, v is also matched. This problem is known to be NP-hard in general, but polynomially solvable in a special case where the maximum size of a connected component of D is at most two. This paper investigates the master/slave matching problem in terms of delta-matroids, which is a generalization of matroids. We first observe that the above polynomially solvable constraint can be interpreted as delta-matroids. We then introduce a new class of matching problem with delta-matroid constraints, which can be solved in polynomial time. In addition, we discuss our problem with additional constraints such as capacity constraints.