[Coin-lpsolver] Re: New branching ideas for CBC

[Matthew Saltzman]

On Mon, 28 Nov 2005, Irv Lustig wrote:

>[...]
>
> So, let's suppose you have a cut generation strategy, and you implement
> it using the CGL.  Or you have a branching strategy, and you implement
> it on top of CBC.  You could also implement that same strategy using
> CPLEX, and publish the cut using the CPLEX API's, and be able to share
> the code just like you do with COIN.

With CPLEX users.  But not with XPRESS users or GLPK users or Mosek 
users or Soplex users or FortMP users or ....

>
> Please let's not get into a discussion of open source versus commerical
> software.  That's not what the issue is.  I'm asking whether there are
> things that you need to do as a researcher with COIN that are not
> possible with CPLEX.  That was the question that I posed.

Nor could I take cuts/branches/etc. written for other solvers and use them 
with my CPLEX solver without modification.

-- 
 		Matthew Saltzman

Clemson University Math Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs