[Coin-lpsolver] Re: Coin-lpsolver Digest, Vol 13, Issue 15

[Erling D. Andersen]

>
>If by "extract a ray", you mean obtain the extreme ray that proves a
>problem is unbounded, that is available with CPLEX.  You're correct that
>you'd have to turn off presolve, because we don't "unpresolve" the
>extreme ray.  I think this could be done.  I'll pass it on to our R&D
>team.

It can be done. MOSEK does that already :-) in its postsolve.

Erling


*************************************************************************
MOSEK ApS     
C/O Symbion Science Park    
Fruebjergvej 3, Boks 16
DK-2100 Copenhagen O
Denmark

Phone (work): +45 3917 9907
Mobile-phone: +45 2362 9520
Fax:               +45 3917 9823
Email: e.d.andersen at mosek.com
Homepage: http://erling.andersen.name 
                  http://www.mosek.com/homepages/e.d.andersen/

*************************************************************************