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Erwin Kalvelagen's user avatar
Erwin Kalvelagen's user avatar
Erwin Kalvelagen's user avatar
Erwin Kalvelagen
  • Member for 5 years, 5 months
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Developing Math Programming Models by day and trying to solve them at night.

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12
Hard to soft constraint
Jan 23, 2021
answer
10
CPLEX log always the same after hours ("Gap" and "Best Integer" always blanks)
Jun 18, 2021
answer
9
Non-symmetric Positive Definite/Semidefinite Matrix in Quadratic Program
Jun 27, 2021
answer
8
No-good cuts for general integer variables
Apr 24, 2021
answer
8
Multithreading vs DPCC SYCL Programming for OR computational implementations
Feb 9, 2023
answer
7
Do convex quadratic problems always have sparse solutions?
Dec 19, 2023
answer
7
How to keep solutions stable/persistent in a problem with many equally good solutions?
Nov 21, 2021
answer
7
If-then condition formulation to avoid variable multiplication
Jan 12, 2022
answer
7
How to add a SOS1 equality constraint?
Mar 23, 2021
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6
warmstarting simplex algorithm- how much can problems differ from each other?
Apr 20, 2021
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25
How to write if else statement in Linear programming?
14
How to ask for second best solution to a MIP using JuMP
8
How to express the "not equals" relation in linear programming?
8
Cast to boolean, for integer linear programming
8
Why would one use this tolerance in is.wholenumber