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: | Hindi Khalil S., Bazlamaci Cneyt F. |
Keywords: | programming: network |
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.