Chordal graphs are graphs with the property that each cycle of length greater than 3 has two non-consecutive vertices that are joined by an edge. An important subclass of chordal graphs are strongly chordal graphs (Farber, 1983). Chordal graphs appear for example in the design of acyclic data base s
Maximum vertex-weighted matching in strongly chordal graphs
✍ Scribed by Manoel B. Campêlo; Sulamita Klein
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 412 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0166-218X
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✦ Synopsis
Given a graph G = (V, E) and a real weight for each vertex of G, the vertex-weight of a matching is defined to be the sum of the weights of the vertices covered by the matching. In this paper we present a linear time algorithm for finding a maximum vertex-weighted matching in a strongly chordal graph, given a strong elimination ordering. The algorithm can be specialized to find a maximum cardinality matching, yielding an algorithm similar to one proposed earlier by Dahlhaus and Karpinsky. The technique does not seem to apply to the case of general cdgcweighted matchings.
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