## Improving the Feasibility Pump

Please always quote using this URN: urn:nbn:de:0297-zib-8754
• The Feasibility Pump of Fischetti, Glover, Lodi, and Bertacco 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, tends to be 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: in 89 out of 121 MIP instances the modified version produces improved solutions in comparison to the original Feasibility Pump.

Author: Tobias Achterberg, Timo Berthold ZIB-Report feasibility pump; mixed integer programming ; primal heuristics 90-XX OPERATIONS RESEARCH, MATHEMATICAL PROGRAMMING / 90-08 Computational methods 90-XX OPERATIONS RESEARCH, MATHEMATICAL PROGRAMMING / 90Cxx Mathematical programming [See also 49Mxx, 65Kxx] / 90C11 Mixed integer programming 2005/09/16 ZIB-Report (05-42) Appeared in: Discrete Optimization 4 (2007) 77-86

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