Article ID: | iaor20073112 |
Country: | Netherlands |
Volume: | 4 |
Issue: | 1 |
Start Page Number: | 77 |
End Page Number: | 86 |
Publication Date: | Mar 2007 |
Journal: | Discrete Optimization |
Authors: | Achterberg Tobias, Berthold Timo |
The feasibility pump described by Fischetti, Glover and Lodi, and Bertacco, Fischetti and Lodi has proved to be a very successful heuristic for finding feasible solutions of mixed integer programs. The quality of the solutions in terms of the objective value, however, is sometimes quite poor. This paper proposes a slight modification of the algorithm in order to find better solutions. Extensive computational results show the success of this variant: for 89 out of 121 MIP instances the modified version produces improved solutions in comparison to the original feasibility pump.