Hi,
I am developing a column generation algorithm and my sub problem has binary variables.
My problem is that sometimes there are some degenerate solution for my sub problem. which causes to no improvement in the solution and stopping algorithm.
Is there any tool in Opl Cplex to avoid degeneracy or finding all solutions with the same objective function with integer (binary) variables?
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 20130329T16:50:18Z by SystemAdmin
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Pinned topic Degeneracy in Mixed Integer problem
20130328T14:10:06Z

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Updated on 20130329T16:50:18Z at 20130329T16:50:18Z by SystemAdmin

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Re: Degeneracy in Mixed Integer problem
20130329T09:30:42Z in response to SystemAdminHi,
maybe you should have a look at solution pools.
The solution pool allows you to generate and store multiple solutions to a mixed integer programming (MIP) model. This feature uses an extension of the IBM ILOG CPLEX branchandcut algorithm to generate multiple solutions in addition to the optimal solution.
You have an example in /warehouse/solpoolscript.mod
regards
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Re: Degeneracy in Mixed Integer problem
20130329T16:50:18Z in response to AlexFleischerThank you Alex,
This is very useful!
