G-2004-23
Variable Neighborhood Search for the Vertex Weighted k-Cardinality Tree
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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.
Published March 2004 , 16 pages
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Jan 2006
Variable neighborhood search for the vertex weighted k-cardinality tree problem
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European Journal of Operational Research, 171(1), 74–84, 2006
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