Yo !!!
I upgraded to Sage 6.0, and the output is still wrong. I then checked IBM,
and a new version of CPLEX was released in early December 2013. With CPLEX
12.6.0 and Sage 6.0, I now get the correct answers.
HMmmm O_o
So it seems that CPLEX 12.5.10 was the culprit.
On Tue, Jan 7, 2014 at 1:58 AM, Nathann Cohen nathann.co...@gmail.comwrote:
Something is indeed wrong, and I have experienced similar problems in
the past. What version of CPLEX and which version of Sage are you using? I
am using IBM ILOG CPLEX 12.5.1.0, and Sage 5.12 on Fedora Linux 19 and
Sorry for the delay in responding, but I was traveling over the holidays.
Happy New Year!
On Sun, Dec 15, 2013 at 5:18 AM, Nathann Cohen nathann.co...@gmail.comwrote:
{0: 2.0, 1: 0.0}
Note that x[0] has the solution 2, which shouldn't happen for a binary
variable.
When I ran the example
Hellooo !!!
Something is indeed wrong, and I have experienced similar problems in the
past. What version of CPLEX and which version of Sage are you using? I am
using IBM ILOG CPLEX 12.5.1.0, and Sage 5.12 on Fedora Linux 19 and Sage
5.10 on Fedora 13.
What other information can I give
Hello !!!
It seems that Integer Programs solved with CPLEX sometimes have the wrong
bounds on binary variables. For instance,
Well, as you say CPLEX defined a binary type. And does not associate
bounds with such variables, because it knows it is binary. Anyway :
sage: