Riley Clement

Hi Bruce,This is great to hear!  We love optimization success stories and if they are Gurobi success stories then even better!May your optimizations be quick and your use-cases plentiful :)- Riley

A separate submission of the identical model, inputsThis statement is not compatible with the fact the coefficient statistics reported in the two logs are different.

Hi Haiyi,Please see the following article: https://support.gurobi.com/hc/en-us/articles/33982552193937-As-a-student-at-a-university-in-China-how-do-I-request-a-Free-Academic-LicenseBest of luck wit...

Hi 玉鑫 张 ,This can be normal, it all depends on the model.Firstly though, I think you are setting way too many parameters.  When we make parameter recommendations for customers, based on their model...

Hi Haonan,When Gurobi finds a solution it will call your callback method using a “MIPSOL” argument for the where parameter, which gives you a chance to cut the solution off with a lazy constraint. ...

Hi Greg,I created a ticket to keep you updated.- Riley

Hi Greg!I'll ping the dev team.- Riley

Hi Haonan,Yes, feasible solutions can be found during presolve as we have some simple heuristics which run in parallel threads during presolve.- Riley

Hi Paula,The log shows 33 variables added to disaggregate expressions. Is Gurobi decomposing the degree-4 product into a chain of bilinear constraints during presolve, e.g.:   t1 = w_i · (Cbar_i - ...

Hi Federica,The Lazy attribute is only relevant to constraints that you generate before the solve, so if you're using a callback to add lazy constraints, then you don't have to worry about this att...