Eli Towle

Hi Yuan, You can pass an initial solution to Gurobi by setting the Start variable attributes. An example of this can be seen in the C# facility location example from the Gurobi examples library. Th...

Hi Austin, Yes, we will discuss this with you directly through our online support portal. Thanks! Eli

Hi Hongyan, First, note that < (strict inequality) is not supported for constraints. Perhaps you mean to use <= ( \( \leq \) )? Second, indicator constraints should be used when you want to say som...

Hi Ronan, The MATLAB code that you posted for the stationarity test looks correct to me (I believe it should work irrespective of the constraint senses). I don't know how other solvers handle the d...

Hi Ronan, If Gurobi solves the QP using the barrier algorithm, there is no crossover phase and Gurobi will return an interior point solution. Could you try setting Method=1 to solve the problem usi...

Hi Buddi, Yes, you can do this by passing a list of the corresponding Var objects to the vars argument of Model.feasRelax(). In the example in the documentation, all variable bounds are allowed to ...

Hi Abhinav, Thanks for posting the example. When solving this model and printing the solution, I see the following: w0 -0.0w1 1.0w2 -0.0w3 1.0w4 -0.0w5 -0.0w6 0.9999957654892611w7 -0.0w8 -0.0w9 1.0...

Hi, This behavior will be fixed in the next bugfix release of Gurobi. Thanks for letting us know about it! In the meantime, a possible workaround is to explicitly set the __len__ attribute of the M...

Hi Abhinav, I wasn't able to replicate this. Your code seems to behave as expected for any integer value of n (when taking into account integer division). Are you recompiling the Java code after m...

Hi Justin, The first step is to introduce binary variables that are equal to 1 if and only if you eat a food product on a particular day. We should assume that if you eat a food, you must eat at le...