Luis Infante

6 Questions 6 Answers 0 Followers

Questions related from Luis Infante

How to obtain GAP in the global solver BARON with AMPL?

Dear Colleagues, actually I use BARON global solver with AMPL to solve mathematical models with non convex and non-linear constraints. However the GAP provided by the solver is poor (the dual...

20 April 2021 382 0 View

A software of aggregation of columns (Dantzing-Wolfe)?

Software to linear programming as cplex, gurobi, etc but with the method of aggregation of columns integrated(Dantzing wolfe) Is possible save memory in big problems with this method?

28 October 2014 6,306 8 View

Decomposition benders for problems of integer programming, with only binary variables?

In the examples of method de decomposition of benders, the problem have two groups of variables, a group of binary variables and other of continuous variables, the problem is converted in two...

25 August 2014 647 5 View

How can I make a constraint of design (to utilization of vehicles, creation of plants) independent of the objective function?

My question is about of constraint in problems of design or utilization. An example is the design of a fleet of vehicles in problems of routing, the objective is the minimization of costs, the...

06 May 2014 4,917 2 View

What options are there if the solver cplex can't reach optimality but same solution is reached in a long time?

Example: The objective value in five minutes is 5000 (with gap of 50%) in 8 hours the objective value is 5000n(with gap of 40) (equal than in five minutes) in 48 hours the objective value is...

14 February 2014 950 7 View

What are the best specifications of a computer for solving integer problems with solver cplex?

Is it better to use a CPU INTEL XEON or is it equally as good to use an Intel I7 hard disk of solid state with a memory RAM of 16 ,32 gb?

28 January 2014 9,171 7 View