Mathematical questions around optimization model formulations

Gurobi taking too long (?) to set up problem with enormous matrix Answered
0 votes 3 comments
Strange behavior - Optimal solutions with different values, depend on whether StartSol is included Answered
0 votes 7 comments
Model has no integer variables but solution says "Solving non-convex MIQCP" Answered
0 votes 4 comments
Solve scheduling model using a greedy heurisitc Answered
0 votes 1 comment
Using sqrt in constraint. Answered
0 votes 9 comments
Questions About Solving Nonlinear Constraints in an Nonlinear Integer Programming Model Answered
1 vote 2 comments
Why does MIPGap not give me the actual optimality gap? Answered
0 votes 1 comment
See algebraic expressions of problem in debug mode or print Answered
0 votes 2 comments
MIP stopped for a long time in one iteration Answered
0 votes 6 comments
How to maximize a quadratic Objective Function? Answered
0 votes 2 comments
unsupported operand type(s) for +: 'Constr' and 'Var' Answered
-1 votes 1 comment
Getting Binding Constraints Answered
0 votes 2 comments
Indicator variable that depends on two other indicator variables Answered
0 votes 1 comment
Problem with logical constraint using addGenConstrIndicator() Answered
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TypeError when using gurobipy.Model.addGenConstrIndicator Answered
0 votes 2 comments
A TSP Question about TypeError: unsupported operand type(s) for -: 'generator' and 'NoneType' Answered
0 votes 1 comment
Adding arbitrary functions to the model Answered
0 votes 1 comment
Re: Warning on max constraint violation (9.9483e-04) exceeds tolerance Answered
0 votes 1 comment
How to model the constraint for a minimum consecutive running time of a machine? Answered
0 votes 1 comment
GRBaddconstr (or other) permissible inside of #pragma omp parallel for in C? Answered
0 votes 3 comments
Same relaxed solution every time Answered
0 votes 1 comment
Algorithm for large model. Answered
0 votes 5 comments
Mixed-Integer Quadratic Programming (MIQP) model does not converge Answered
0 votes 6 comments
Rostering problem with column generation Answered
0 votes 14 comments
modeling flow management problem Answered
0 votes 3 comments
Unable to optimize using a trained neural network as a surrogate model Answered
0 votes 2 comments
Technical questions regarding binary variables Answered
0 votes 1 comment
Solution not found or model is infeasible ( Gurobi in R) Answered
0 votes 2 comments
Problem with very large matrix variables --- OverFlow error when setting objective? Answered
0 votes 6 comments
How to use CALLBACK to terminate model early? Answered
0 votes 1 comment