Yutian He
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Recent activity by Yutian He-
Gurobi solving SOCP problem
Awaiting user inputHi, I'm using Gurobi to solve an SOCP problem and have tried two different formulations. In the first approach, I define the constraint directly as follows: m.addConstrs(v[k,q,i,h]**2- (4*(1 + 1) *...
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Gurobi Constraints - 'gurobipy.LinExpr' object has no attribute 'shape'
AnsweredHi, I'm working on an optimization problem in Gurobi where x and pi are the only variables. However, when defining the following constraints, I encountered the error: "'gurobipy.LinExpr' object has...
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Model too large for size-limited license
AnsweredHi, Thank you so much for your continued help. I tried to solve a large model with Gurobi and I got the error said the model is too large. Then I applied for a WLS license and click the link https:...
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Define a matrix as a variable and write it in constraint
OngoingHi, I have a quick question about the matrix variable, when I defined the variable and tried to write it in constraint, I got an error for expr1_3:"numpy.core.multiarray failed to import", I tried ...
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Invalid argument to Model.addConstr
AnsweredDear, I am getting the following error: Invalid argument to Model.addConstr. I put my code downstairs, could you please help me to fix this error? Thank you! Here is my code: import randomimport nu...
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Find the global solution for QCQP question
AnsweredDear Gurobi Community, I'm trying to solve a QCQP question using Python. And hope to find a global solution. I added m.Params.NonConvex = 2 in my code, but the result cannot get a global solution, ...