relaxing some sets of binary variables

GAMS
1

Let’s say I have a binary variable Y which has set from 1 to 5.

I want to relax Y one by one in order in each iteration of a loop.

For example, in the first iteration, I want to relax Y(1) and binary conditions should retain on the others. In the second iteration, I want to relax Y(2) and so on.

I don’t know how to relax a specific variable. How can I do that in GAMS?

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2

Hi Istenctarhan(?)



You can relax the integrality condition of an individual variable by defining Y.prior() = +Inf. If it described in the release notes (http://www.gams.com/docs/release/release.htm) in connection with GAMS 22.1. Search for ‘prior=inf’.



Good luck



Arne


\

Arne Stolbjerg Drud

ARKI Consulting & Development A/S

Bagsvaerdvej 246A, DK-2880 Bagsvaerd, Denmark

Phone: (+45) 44 49 03 23, email: adrud@arki.dk



From: gamsworld@googlegroups.com [mailto:gamsworld@googlegroups.com] On Behalf Of istenctarhan@gmail.com
Sent: Thursday, November 20, 2014 10:44 AM
To: gamsworld@googlegroups.com
Subject: relaxing some sets of binary variables



Let’s say I have a binary variable Y which has set from 1 to 5.



I want to relax Y one by one in order in each iteration of a loop.



For example, in the first iteration, I want to relax Y(1) and binary conditions should retain on the others. In the second iteration, I want to relax Y(2) and so on.



I don’t know how to relax a specific variable. How can I do that in GAMS?

–
To unsubscribe from this group and stop receiving emails from it, send an email to gamsworld+unsubscribe@googlegroups.com.
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