How optimization algorithms work & improving their performance

Optimizing away dummy binary variables with values determined by other variables? Answered
0 votes 1 comment
Inconsistent performance Awaiting user input
0 votes 1 comment
How does Gurobi recognize/solve simple stochastic programs? Ongoing
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Unable to find optimal solution for some instances Answered
0 votes 8 comments
Lagrangian Relaxation Answered
0 votes 4 comments
Difference between nested quicksum and several quicksums Answered
0 votes 5 comments
Change solution strategy to standard (ImproveStartGap,ImproveStartNodes,ImproveStartTime) Answered
0 votes 2 comments
What algorithm is used for my optimization? Answered
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How was upper bound generated for non-linear, non-convex maximization optimization model? Answered
0 votes 3 comments
IndexError: list index out of range Answered
0 votes 1 comment
GurobiError: Invalid argument to LinExpr multiplication Answered
0 votes 6 comments
Skipping non-existing decision variables in for loop Answered
0 votes 1 comment
Having 2 implemented Callback methods Answered
0 votes 3 comments
Issue with callback best objective and heuristic solution (versions 9.1.2 and 9.0.0) Awaiting user input
0 votes 1 comment
long time after root relaxation before branch and bound Answered
0 votes 3 comments
Speed up MILP solving Ongoing
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dynamic search
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Does the Gurobi MIP Solver use safe bounds? Answered
0 votes 1 comment
For the case of non convex QCP, How can I set the initial solution? Answered
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TypeError: 'gurobipy.LinExpr' object is not iterable Answered
0 votes 2 comments
How can I create a multidict with data from excel file? Answered
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How to assign a new variable equal to min of two other variable (Gurobi in Python) Ongoing
0 votes 20 comments
Large matrix coefficients and large RHS warning Answered
0 votes 1 comment
Checking feasibility of the problem Ongoing
0 votes 5 comments
Why is Gurobi returning MIP solution with gap of 0 which is not close to the actual optimal solution? Ongoing
0 votes 11 comments
Binary Variables were assigned a continous value Answered
0 votes 1 comment
Object type changing to string after being declared as a continuous variable? Awaiting user input
0 votes 1 comment
How Gurobi compute IIS for MIP problem? Answered
1 vote 5 comments
Adding time window constraints on VRP gets an unexpected result Answered
0 votes 1 comment
Presolve disabled leads to constraint violation Answered
0 votes 2 comments