MINLP and RMINLP

[LaLaLa123]

Hi, I am new to AIMMS and I am just wondering what is the main
difference between MINLP and RMINLP? How do you change from RMINLP to
MINLP?

Thanks,

Jonathan

[Sergio Bruno]

Hello,

MINLP stands for Mixed Integer Non Linear Program. RMINLP is a relaxed
version of a MINLP, in the sense that the integrality constraint is
relaxed and the problem is solved as a NLP (Non Linear Program, no
integers).

if you have a MINLP math program called MyProg, you should solve it
using the syntax:
solve MyProg;

to solve it as a RMINLP, just call it as:
solve MyProg where type:='RMINLP';

best,
Sergio

[Luis Pinto]

Just noticed I replied only to Jonathan.
well, just for the record, her goes:

Hello Jonathan,

RMINLP is a relaxed form of MINLP, in other words, the optimization
doesn't assume that the Integer variable are in fact integer and the
result of optimization isn't necessarily MINLP viable.
Its an intereseting form to find lower bounds for your problem.

To use this option, in your Mathematical Program, define the type as RMINLP.

Cheers,

Luis

www.unisoma.com.br

2009/3/9 Sergio Bruno <svbb...@gmail.com>: