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From: | Xypron |
Subject: | Re: [Help-glpk] how to describe large matrix in octave to call GLPK |
Date: | Sun, 23 Nov 2008 00:06:03 +0100 |
User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.18) Gecko/20081030 SeaMonkey/1.1.13 |
Hello Jack, this seems a question concerning usage of octave. They have their own help email adress: address@hidden The needed documentation for calling GLPK from octave is in the octave package in file doc/optim.texi If you have to handle very large datasets consider importing these from SQL to octave. See http://octave-swig.sourceforge.net/octave-db.html Best regards Xypron Jack Franklin wrote: HI, I am doing research in the parallel computing and I need to do programming in MPITB\octave in order to implement some algorithm to solve mixed linear programming. I need to call GLPK package from octave. But, I do not know how to describe the linear programming problem components for GLPK . For example, how to describe AX + BY - CZ <=b, and (AX ? BY + CZ) >= (EX ? FY + DZ) in octave so that I can call GLPK to solve them ?. here , X,Y,Z are n-dimension decision variables and A,B,C, D,E,F are coefficient matrices. I have got some simple examples about GLPK programming but they are very simple and the matrices are input by hand. My LP problem is very large and how can I describe them in octave more efficiently? Thanks, Jack Nov. 21 2008 |
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