Re: [Help-glpk] Modelling Advice Request - Project Tasks

[Jeffrey Kantor]

Andrew,

I'm not sure I'm getting correct answers.  For the t65d11xx problem with gmpl code I got an objective

value of 283,971 where the claim is that the best known value is 237,739.  I'm curious what you

found for an objective value for this example.

Jeff

On Fri, Jan 22, 2010 at 6:04 AM, Andrew Makhorin <address@hidden> wrote:

Here is my version of the LOP solver based on "lazy" constraint
generation; please see the attachment. It is able to solve instances
having up to 100 nodes. The code requires glpk v4.42.

In the tarball there are also included three real data files from LOLIB:

http://comopt.ifi.uni-heidelberg.de/software/LOLIB/

which are mentioned in the following article:

M.Groetschel, M.Juenger, G.Reinelt. "Optimal Triangulation of Large Real
World Input-Output Matrices", Statistische Hefte 25 (1984), 261-295.