Originally posted by: Trino

Hi, is there a way I can load a solution "manually" for the cplex solver? I mean, I have an heuristic that produces a good solution to my problem, of course not the optimal but a good one, and I just want to use this solution as a start point for the solver hoping it'll improve the total time to find the optimal...

If anyone could point me a direction I would appreciate.

Thanks in advance.
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Originally posted by: SystemAdmin

Unfortunately, you omitted three key pieces of information: whether you are using the interactive optimizer or an API (and, if the latter, which API); whether you want to load the starting solution via code or read it from a file; and the type of problem (LP, IP, QP).

Assuming you are using one of the higher-level APIs and will read the solution fromm a file, look for the readSolution and readMIPStarts methods for your API. If you are using the interactive optimizer, the 'read' command is used to read the relevant file. Check the documentation on file formats for .sol and .mst files.

Paul

Mathematicians are like Frenchmen: whenever you say something to them, they translate it into their own language, and at once it is something entirely different. (Goethe)
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Originally posted by: Trino

Sorry...

I'm using Concert Tecnology for c++, the problem is an IP and I want to load the solution via code, not reading from a file.

Thanks.
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Originally posted by: SystemAdmin

In this case, you want to add a so-called "MIP Start". The method cplex.addMIPStart() is your friend...

Tobias
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Originally posted by: Trino

Thank you, i'll take a look at this method!
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