How optimization algorithms work & improving their performance

Unable to find optimal solution for some instances Answered
0 votes 8 comments
Lagrangian Relaxation Answered
0 votes 4 comments
What algorithm is used for my optimization? Answered
0 votes 1 comment
Difference between nested quicksum and several quicksums Answered
0 votes 5 comments
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
Change solution strategy to standard (ImproveStartGap,ImproveStartNodes,ImproveStartTime) Answered
0 votes 2 comments
Skipping non-existing decision variables in for loop Answered
0 votes 1 comment
GurobiError: Invalid argument to LinExpr multiplication Answered
0 votes 6 comments
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
dynamic search
0 votes 0 comments
Does the Gurobi MIP Solver use safe bounds? Answered
0 votes 1 comment
long time after root relaxation before branch and bound Answered
0 votes 3 comments
For the case of non convex QCP, How can I set the initial solution? Answered
0 votes 1 comment
TypeError: 'gurobipy.LinExpr' object is not iterable Answered
0 votes 2 comments
How can I create a multidict with data from excel file? Answered
0 votes 1 comment
Large matrix coefficients and large RHS warning Answered
0 votes 1 comment
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
Presolve disabled leads to constraint violation Answered
0 votes 2 comments
How Gurobi compute IIS for MIP problem? Answered
1 vote 5 comments
Behaviour of IntInf in the branch-and-cut tree search log Answered
0 votes 3 comments
Adding time window constraints on VRP gets an unexpected result Answered
0 votes 1 comment
column generation dual variables Answered
0 votes 4 comments
Algorithms and solution methods to verify the solution from gurobi Answered
0 votes 1 comment
Questions on the mechanic of the hierarchical method for multi-objective optimization Answered
0 votes 1 comment
Solver behaviour when giving fixed variable a start value Answered
1 vote 1 comment
solver takes ages to close GAP Answered
0 votes 4 comments
Checking feasibility of the problem Ongoing
0 votes 5 comments