[Cbc] Initial integer feasible solution

[Robert Fourer]

Just assign the incumbent values to the AMPL variables, and AMPL will
automatically pass those values to the solver.  Then the solver is free to
do whatever it can with them.

 

Bob Fourer

4er at ampl.com

 

 

  _____  

From: cbc-bounces at list.coin-or.org [mailto:cbc-bounces at list.coin-or.org] On
Behalf Of Pratim Vakish
Sent: Thursday, October 02, 2008 8:12 PM
To: cbc at list.coin-or.org
Subject: [Cbc] Initial integer feasible solution

 

Hello,

I am solving large-scale MIP problems using the CBC solver and the AMPL
interface.

For some problems, I know an integer feasible solution of good "quality" and
I would like CBC to use it as first incumbent solution in the
branch-and-bound tree.
I think that the CBC option CbcModel::setBestSolution() allows to do that.

I use AMPL and I would like to know what is the AMPL command to use this
option?
How can I tell CBC (with AMPL) which solution I would like to use as first
incumbent solution?

Thanks very much,
 
Pratim

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://list.coin-or.org/pipermail/cbc/attachments/20081002/7ad3da17/attachment.html