Haoze Wu
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Activity overview
Latest activity by Haoze Wu-
Haoze Wu created a post,
Most efficient way to extract the IIS of a LP?
Awaiting user inputHi, 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...
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Haoze Wu commented,
Hi Jaromil, Thanks a lot for the info! This is very helpful! Andrew
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Haoze Wu commented,
Hi Jaromil, thanks a lot for the response. Yeah, so I'm trying to handle a problem that involves disjunctions of linear constraints and I'm calling Gurobi to solve each LP sub-problems. Say I hav...
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Haoze Wu created a post,
How does incremental solving work with presolve ?
AnsweredHi, 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...
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Haoze Wu commented,
Ah I see. Thanks for the explanation!
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Haoze Wu created a post,
Is it possible to dump the discovered implied bounds after solving LP?
AnsweredI'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...