Runtime of LP vs MILP - Operations Research Stack Exchange
Runtime of LP vs MILP Ask Question Asked 2 years, 5 months ago Modified 2 years, 4 months ago
mixed integer programming - Complexity of LP and MILP Problems ...
Nov 11, 2019 · My original problem is an MILP. I make it an LP by relaxing the integer variables. Can someone please comment on the complexity, solvability and optimality of MILP and LP problems, in …
mixed integer programming - Guides for strong MILP Formulations ...
Is the scientific community able to provide a guide for addressing the strength of a MILP formulation? Something like "disciplined convex programming" but for strong MILPs, lets call it "disciplined MILP …
What is the best open-source solver for large-scale MILP optimization?
Jul 7, 2024 · Currentlly, I am using ortools with SCIP/CBC solvers for a large scale optimization problem, which turned out to be quite slow. The integer part of my problem is due to a piece-wise linear …
MILP: is it NP-complete or NP-hard?
Nov 12, 2019 · The pieces of information I get online are sometimes confusing. Someone says MILP problems are NP-hard, and somewhere else I found the claim that MILP problems are NP-complete. …
mixed integer programming - How does a warm start work in LP/MIP ...
Simplex warmstarting is crucial to the performance of MILP solvers since the MILP solver does various modifications to a base problem to solve subproblems. Using warmstart speeds up solving these …
How can I transform this MILP into an LP problem?
Dec 17, 2019 · 10 I have a MILP problem with one of the constraints is given below. Sometimes, even for a small-sized problem, the solver takes a very long time to find a solution. What could be an …
How can I identify the reason that makes a MILP model hard for solvers ...
Sep 25, 2020 · For a MIP, out of memory exceptions typically happen when the tree size becomes very large. If your LP relaxation is weak, then intuitively your model may become easier if you can figure …
How to measure the tightness of MILP models?
Apr 4, 2022 · Suppose we have a MILP model. How can we say this model is tight or not? How to make it more tight? Any advice or example?
Settings for a faster solution of a MILP (GUROBI, python)
May 6, 2020 · 13 Using GUROBI with python. When solving a MILP, I notice that the incumbent is very early (25sec) at the optimal point but the best bound is so slow to fall (maximization problem) that it …