Search found 3 matches

by Monsef
5 months ago
Forum: Modeling
Topic: Linearizing and minimizing an absolute term
Replies: 1
Views: 193

Linearizing and minimizing an absolute term

Hi,

If we want to linearize and minimize an absolute term like |A-B|, where A and B are free integer variables. How do I do it?

Also, if the term changed to |A-1| what is the linear model for that?

I have solved the second part:
A-1<= x
1-A>=x
X>=0,
Min x

Is this correct?.
by Monsef
5 months ago
Forum: Modeling
Topic: Nonlinear constraints in MINLP model
Replies: 2
Views: 322

Re: Nonlinear constraints in MINLP model

For linearizing the nonlinear equations, you can use piecewise modulation. Others, like you are getting an infeasible solution, try to check the boundaries of your variables. Your solution might be out of the feasible region.
by Monsef
5 months ago
Forum: Modeling
Topic: Modeling the absolute value
Replies: 23
Views: 7032

Re: Modeling the absolute value

Does someone know how to linearize and optimize this absolute term |A - B|, where both A and B are free integers. And what if the term changed to |A-1|, what will the minimization look like?.

Here is my Linearization for |A-1|
X>=A-1
X>=1-A
X>=0.

Min X

Is this correct?