Enhanced adjacent extreme-point search and tabu search for the minimum concave-cost uncapacitated transshipment problem

Enhanced adjacent extreme-point search and tabu search for the minimum concave-cost uncapacitated transshipment problem

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Article ID: iaor19971587
Country: United Kingdom
Volume: 47
Issue: 9
Start Page Number: 1150
End Page Number: 1165
Publication Date: Sep 1996
Journal: Journal of the Operational Research Society
Authors: ,
Keywords: programming: network
Abstract:

Practicable methods for optimising concave-cost, uncapacitated transshipment networks are non exact. In this paper, one such effective method, that of adjacent extreme point search, is further developed to enhance its overall computational efficiency. The enhanced search algorithm is then imbedded in a tabu search scheme which proved capable of finding better solutions, by a wide margin in some instances. Another tabu search scheme, somewhat inferior in terms of solution quality but computationally more efficient, is also developed to provide an alternative solution vehicle for larger networks. Results of extensive computational testing are included.

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