Thanks a lot to all of them who answered my question. Should I suppose that the answer to my question is negative, i.e. it is not possible to force GLPK to start searching from a particular point? For your information, my project concerns the school timetabling problem. As I mentioned in my previous mail, I got a solution provided by Particle Swarm Optimization, but I do not know if this solution is optimal or not. Any way, I found your answers very helpful. What I wrote in command prompt was : glpsol --cuts --pcost --math my_model.mod --data my_data.dat --proxy 200 --mir --mipgap 0.2 The results were good and produced fast. Nevertheless, I mast say that I have no idea about what --cuts, --pcost, --proxy, --mir and --mipgap 0.2 mean or stand for. Could any one inform me in a few words about the meaning of all these? Or better, is there any text explaining all these? Please note that the asked information is very crucial to me, as I shall be in a position to explain the way or the method I followed in order to discover these better solutions, compared with those found by Particle Swarm optimization. Thanks for one more time
2016-02-08 23:21 GMT+02:00 Noli Sicad <[email protected]>: > Hi Johannes, > > Try to use the proximity option and mipgap option as well, as > mentioned by Heinrich. > > For example, > > glpsol --math yourMIP_mathprog_model.mod --proxy 200 --mir --mipgap 0.2 > > Note: 200 in the example above is in seconds. > > Reggards, Noli > > _______________________________________________ > Help-glpk mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/help-glpk > -- Ioannis X. Tassopoulos
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