Search found 15 matches
- 9 months ago
- Forum: Solvers
- Topic: SBB Scaling
- Replies: 2
- Views: 5703
Re: SBB Scaling
Thank you Michael!
- 9 months ago
- Forum: Solvers
- Topic: SBB Scaling
- Replies: 2
- Views: 5703
SBB Scaling
Hello,
I have a question: does SBB perform automatic scaling? I didnt find any indication that it does, and perhaps you could give me an insight towards the answer.
Best regards,
Francisco
I have a question: does SBB perform automatic scaling? I didnt find any indication that it does, and perhaps you could give me an insight towards the answer.
Best regards,
Francisco
- 1 year ago
- Forum: Tools
- Topic: Import a number of GDX and compare a result
- Replies: 2
- Views: 7601
Re: Import a number of GDX and compare a result
Hey!
Thank you for your reply. I will try to implement this.
Thank you for your reply. I will try to implement this.
- 1 year ago
- Forum: Tools
- Topic: Import a number of GDX and compare a result
- Replies: 2
- Views: 7601
Import a number of GDX and compare a result
Hello, hope you are all doing fine. I am sorry if this question has been answered previously, however I couldnt find any solution. Suppose I ran a model 20 times, each with different parameters and solutions. I want to compare the result variables' levels for each run. I'm trying to do this automati...
- 2 years ago
- Forum: Modeling
- Topic: Sequantial solve statements
- Replies: 2
- Views: 1453
Re: Sequantial solve statements
Thank you Michael!
- 2 years ago
- Forum: Modeling
- Topic: Sequantial solve statements
- Replies: 2
- Views: 1453
Sequantial solve statements
Good evening I have a model with the following details (I'll skip most sets, parameters and variables, of relevance are the sets, variable and objective function below): set i /AF,A,B,C/ set j /A,B,C,EF/ Variable F(i,j) OF .. FT =e= sum((i,j),F(i,j)); I want to solve the model individually for each ...
- 2 years ago
- Forum: Syntax
- Topic: Binary variables
- Replies: 5
- Views: 8043
Re: Binary variables
Thanks Michael!
- 2 years ago
- Forum: Solvers
- Topic: IPOPT scaling
- Replies: 1
- Views: 2659
IPOPT scaling
Hi all,
I have a question: IPOPT returns me this:
Well I have initialized the variables with a plausible, but random value. Is there anyway to circumvent the problem in the figure?
I have a question: IPOPT returns me this:
Well I have initialized the variables with a plausible, but random value. Is there anyway to circumvent the problem in the figure?
- 2 years ago
- Forum: Syntax
- Topic: Binary variables
- Replies: 5
- Views: 8043
Re: Binary variables
Hi,
I seem to be having a similar problem: SBB reports an INTEGER SOLUTION (Fig.1), but my binary variable y has values like 1e-6 (Fig.2).
However if I run ANTIGONE(or SBB again) afterwards, it accepts the objective value of SBB, but the binaries are now all 0 and 1.
I seem to be having a similar problem: SBB reports an INTEGER SOLUTION (Fig.1), but my binary variable y has values like 1e-6 (Fig.2).
However if I run ANTIGONE(or SBB again) afterwards, it accepts the objective value of SBB, but the binaries are now all 0 and 1.
- 2 years ago
- Forum: Modeling
- Topic: Adding bounds using gdx
- Replies: 0
- Views: 4938
Adding bounds using gdx
Hey, I think this is the right place for this question: I have a variable A, and a GDX file with A.l from another model. I want to do something like (in my new model): $gdxin TEST $load A.up=A.l GAMS returns an error saying I cannot load/unload this suffix. I got around this by writing a parameter P...