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, 5 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 …
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. …
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 …
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?
CPLEX gives different solutions of MILP every run
Jan 12, 2022 · 5 I am solving a mixed-integer (binary) linear problem using CPLEX as a solver (branch-and-bound method). But I encountered the following issue. Each run I get a different solution at a …