Haoze Wu

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Recent activity by Haoze Wu Recent activity Votes

  • Most efficient way to extract the IIS of a LP?

    Awaiting user input

    Hi, I'm trying to use the computeIIS() function from the C++ API on a LP. The documentation (https://www.gurobi.com/documentation/9.5/refman/py_model_computeiis.html) says that "IIS results are ret...

    Haoze Wu Edited 3 followers 2 comments 0 votes

  • How does incremental solving work with presolve ?

    Answered

    Hi, I added some constraints to a model and called model.solve(), which seems to trigger presolve.    Optimize a model with 2241 rows, 5671 columns and 339845 nonzeros ...Presolve removed 1234 rows...

    Haoze Wu Edited 3 followers 5 comments 0 votes

  • Is it possible to dump the discovered implied bounds after solving LP?

    Answered

    I'm not sure whether this is a sensible question. If some bound tightening/propagation techniques are used when solving a LP problem (e.g., examining a row when revised Simplex is running), is it p...

    Haoze Wu Edited 3 followers 3 comments 0 votes