Copyright © 2004 Elsevier B.V. All rights reserved.
Discrete Optimization
Variable neighborhood search for the vertex weighted k-cardinality tree problem
Received 20 October 2003;
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Abstract
This paper presents some new heuristics based on variable neighborhood search to solve the vertex weighted k-cardinality tree problem. An efficient local search procedure is also developed for use within these heuristics. Our computational results demonstrate that the new heuristics substantially outperform the state-of-the-art methodologies, including a tabu search and genetic algorithm recently proposed in the literature. We also show that a decomposition approach is best for larger problem sizes than previously investigated. Thus, our findings advance in a significant way the capacity to solve this important class of problems.
Keywords: Metaheuristics; Variable neighborhood search; Combinatorial optimization; Vertex weighted k-cardinality tree problem






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