Barak Gross

Gurobi-versary
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Recent activity by Barak Gross Recent activity Votes

  • Debugging wrong MIPSOL_OBJBND

    1. Community
    2. Programming

    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 ...

    • Barak Gross
    • 2 followers
    • 2 comments
    • 0 votes

  • How to improve LP formulation using presolve

    1. Community
    2. Programming

    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...

    • Barak Gross
    • Edited
    • 3 followers
    • 1 comment
    • 0 votes

  • Constant Variable

    Answered
    1. Community
    2. Algorithms

    I 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...

    • Barak Gross
    • 3 followers
    • 3 comments
    • 0 votes