Invited Session Wed.3.H 0110

Wednesday, 15:15 - 16:45 h, Room: H 0110

Cluster 10: Implementations & software [...]

Commercial mathematical programming solvers I


Chair: Hans Mittelmann



Wednesday, 15:15 - 15:40 h, Room: H 0110, Talk 1

Thorsten Koch
Any progress one year after MIPLIB 2010 ?

Coauthors: Gerald Gamrath, Hans Mittelmann


It has been a little more than one year after the release of MIPLIB 2010. How much progress has there been in solving these instances and how does this translate into real progress in the ability to solve mixed integer programs.



Wednesday, 15:45 - 16:10 h, Room: H 0110, Talk 2

Michael Perregaard
Recent advances in the Xpress MIP solver


We will present some of the recent developments in the Xpress MIP solver, with particular emphasis on heuristics. Modellers continually push the boundaries on the size of problems that can be solved and is often satisfied with a solution that is "good enough''. This talk will focus on the developments in Xpress to address such problems.



Wednesday, 16:15 - 16:40 h, Room: H 0110, Talk 3

Tobias Achterberg
Cover probing for mixed integer programs


This talk is about an extension of the probing procedure on binary variables to set covering constraints. We will explain an algorithm to do this efficiently. Computational results based on CPLEX 12.4 assess the impact of the procedure in practice.


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