-------- Forwarded Message -------- From: Laguna Loire <sloanesqu...@gmail.com> To: help-glpk@gnu.org Subject: Binary variables act like float Date: Thu, 26 Feb 2015 01:31:40 +0100
Dear GLPK developers, I'm a student from Roma Tre University and I'm working on a project using your glpk-java library. I'm having trouble with binary variables acting like float. I found someone who had my same problem at this link: https://lists.gnu.org/archive/html/bug-glpk/2013-07/msg00012.html I've tried to do as Makhorin said using: parm = new glp_smcp(); GLPK.glp_init_smcp(parm); ret = GLPK.glp_simplex(mip, parm); GLPK.get_intopt(mip,null); and glp_mip_col_val instead of glp_get_col_prim. The problem is that if I use get_intopt my pc tries to find an heuristic solution (it says something like that) but it does not find it. It goes on calculating, and I'm working with 20 rows and 100 binary col, do I have to wait for more than 10 minutes? Anyway I don't need an integer solution so I removed glp_intopt but if I do this, all the col in my solution are zero, so I'm stuck. What am I doing wrong? Thanks in advance for your help. Yours sincerely, Marco Nanni _______________________________________________ Help-glpk mailing list Help-glpk@gnu.org https://lists.gnu.org/mailman/listinfo/help-glpk