[Coin-ipopt] IPOPT within any MINLP solvers?

Andreas Waechter andreasw at watson.ibm.com
Wed Feb 16 10:45:56 EST 2005

Hi Frank,

Thanks for the info about your MINLP problem.  Sounds like some
interesting problems to look at.

> Good luck with your IPOPT/CBC MINLP effort!  You might periodically update
> this maillist as to your progress :-)
> BTW, in the meantime, to solve my problem, is it worth my contemplating a
> quick and dirty hooking up of IPOPT to some B&B code?  I presently have
> "only" about 10 binary variables.  If so, any basic pointers?  Or is this
> silly?

That probably depends on how urgent you need this, and how quickly you
have to solve the final problems.  You could try to see what happenes, if
you think it is not too much work to implement the B&B framework.

As I said, we started to integrate the new C++ version of Ipopt (still in
beta testing, though, but it will at some point replace the Fortran
version) into Cbc, but it will probably take a while until we feel
comfortable to give away such an MINLP solver.

That is probably not so helpful, but all I got at the moment.



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