Barak Gross
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Recent activity by Barak Gross
Debugging wrong MIPSOL_OBJBND
I have modeled some graph problem in which I add graphs cuts as a lazy constraint.For some reason after some number of iterations the algorithm deduce a bound for MIPSOL_OBJBND that is incorrect.I ...

How to improve LP formulation using presolve
I have written an Integer Program using the Gurobi Python API and noticed the following row in the log: Presolve removed 9331080 rows and 2671 columns  which took about 35 seconds. I know for sure...

Constant Variable
AnsweredI have some ILP formulation I came up.It is very convenient in my formulation to have some binary ( maybe even integer) variables that are constant. For example a parity variable that for a specifi...