Search found 27 matches

by richard
1 month ago
Forum: Archive Google Group
Topic: Is it possible to solve bi-objective model directly in GAMS?
Replies: 6
Views: 289

Re: Is it possible to solve bi-objective model directly in GAMS?

Dear Steve,
If you want the truth, I'm just looking for a good solution And nothing special in my mind.
Thanks so much!
Richard
by richard
1 month ago
Forum: Archive Google Group
Topic: Is it possible to solve bi-objective model directly in GAMS?
Replies: 6
Views: 289

Re: Is it possible to solve bi-objective model directly in GAMS?

Dear Steve, Thanks very much for your answer. I have a bi-objective model for nursing home location and allocation problem. I heard cplex have a feature that can solve multi-objective model directly, and GAMS supported this feature too. Is this true? I searched a lot, but I didn't find anything. Man...
by richard
1 month ago
Forum: Archive Google Group
Topic: Is it possible to solve bi-objective model directly in GAMS?
Replies: 6
Views: 289

Is it possible to solve bi-objective model directly in GAMS?

Hi all,
Is there any command that can solve multi objective model directly? I mean, without using weighted sum or epsilon constraint methods, can we solve multi objective model in gams?

Many thanks!
by richard
10 months ago
Forum: Tools
Topic: Created a loop including CSVs
Replies: 2
Views: 536

Re: Created a loop including CSVs

Hi @Renger , Thanks a lot ! It was very helpful.
by richard
10 months ago
Forum: Tools
Topic: Created a loop including CSVs
Replies: 2
Views: 536

Created a loop including CSVs

Hi all,

Is there any way to refer to the CSV files in a loop?
All my files have systematic names: file1.csv, file2.csv etc. How do I create a loop including all the files?

I am looking for something like this:

set j /1*10/
loop(j,
$include "filej.csv")
How do I go about it?
by richard
10 months ago
Forum: Syntax
Topic: Alias Dynamic Sets
Replies: 1
Views: 333

Alias Dynamic Sets

Hi all, I used this command in order to have a set to be able to changing depending on the value of a scalar. https://support.gams.com/gams:a_scalar_drives_the_length_of_a_set in this code , is it possible to define " Alias " (e.g: alias(myset,myset1) ? set univ the universe /1*1000/; scalar dim /6/...
by richard
10 months ago
Forum: Archive Google Group
Topic: Zermelo's navigation problem
Replies: 0
Views: 768

Zermelo's navigation problem

Hi, I am triyng to calculate the route wich takes less time to go from point A to point B in the presence of a constant flow (I. E. a simple version of Zermelo's navigation problem) using the GAMS software. However, if I put both points on a straight line and make the constant flow equal to zero, I ...
by richard
11 months ago
Forum: Archive Google Group
Topic: Number of variable and constraints
Replies: 2
Views: 6782

Re: Number of variable and constraints

Yes! Thanks a lot!