Dear Sajal, GLPK comes both with the standalone solver GLPK as well as with a library which you can call from your own program written in C, C++, Java, or some other languages (cf. http://en.wikibooks.org/wiki/GLPK).
As described in glpk-4.47/doc/glpk.pdf, chapter 5 you can use a callback routine to change the problem while solving a mixed integer problem. The callback routine cannot be used with all language interfaces. C, C++, and Java are known to be usable. Consider switching of the presolver, when you want to change the cost matrix. Best regards Xypron -------- Original-Nachricht -------- > Datum: Wed, 13 Jun 2012 16:24:09 +0530 > Betreff: [Help-glpk] glpk help > Hello, > Say I have a file name g1.mod. I am running it in the terminal > with > the command "glpsol --model g1.mod --output g1.sol". After solving it is > giving the ultimate solution and saving it in g1.sol. The ultimate > information about x[i,j,k] I am getting in g1.sol. I don't have any > control > over x[i,j,k] during the solving process. Now my question is when glpk > solving my g1.mod and changing the x[i,j,k] internally in different > iteration , can I know that information and can get the control over > x[i,j,k] so that depending on that information I can change some of the > cost matrix dynamically? May be it is clear what exactly I want? Please > help. Any suggestion will be helpful. > > -- > Sajal Mukhopadhyay, > Asst. Professor, > NIT,Durgapur, > Durgapur-9. -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
