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- W2109766090 abstract "Purpose Medians of a graph have many applications in engineering. Optimal locations for facility centers, distribution of centers and domain decomposition for parallel computation are a few examples of such applications. In this paper, a new ant system (AS) algorithm based on the idea of using two sets of ants, named active and passive ants is proposed for the problem of finding k ‐medians of a weighted graph or the facility location problem on a network. Design/methodology/approach The structure of the algorithm is derived from two known heuristics; namely, rank‐based AS and max‐min ant system with some adjustments in pheromone updating and locating the ants on the graph nodes. The algorithms are designed with and without a local search. Findings An efficient algorithm for location finding, and the novel application of an ant colony system can be considered as the main contribution of this paper. Originality/value Combining two different tools; namely, graph theory and AS algorithm results in an efficient and accurate method for location finding. The results are compared to those of another algorithm based on the theory of graphs." @default.
- W2109766090 created "2016-06-24" @default.
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- W2109766090 date "2008-03-07" @default.
- W2109766090 modified "2023-09-27" @default.
- W2109766090 title "Ant colony optimization for finding medians of weighted graphs" @default.
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- W2109766090 doi "https://doi.org/10.1108/02644400810855931" @default.
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