Can you be more specific about what you mean by "gams"? Do you mean generalized additive models (GAM)? If so, R is a good environment for forecasting models and GAM. However, the link that you provided is NOT for generalized additive modeling, but it is for General Algebraic Modeling System (GAMS), which is a high-level modeling system for mathematical programming and optimization. Ravi. ---------------------------------------------------------------------------- ------- Ravi Varadhan, Ph.D. Assistant Professor, The Center on Aging and Health Division of Geriatric Medicine and Gerontology Johns Hopkins University Ph: (410) 502-2619 Fax: (410) 614-9625 Email: rvaradhan at jhmi.edu Webpage: http://www.jhsph.edu/agingandhealth/People/Faculty/Varadhan.html ---------------------------------------------------------------------------- -------- -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of vittorio Sent: Friday, October 27, 2006 3:14 PM To: r-help at stat.math.ethz.ch Subject: [R] R & gams At office I have been introduced by another company to new, complex energy forecasting models using gams as the basic software. I have been told by the company offering the models that gams is specialised in dealing with huge, hevy-weight linear and non-linear modelling (see an example in http://www.gams.com/modtype/index.htm) and they say it is almost the only option for doing it. I would like to know your opinion on the subject and, above all, if R can be an effective alternative and to what extent, if any. Thanks Vittorio ______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
At office I have been introduced by another company to new, complex energy forecasting models using gams as the basic software. I have been told by the company offering the models that gams is specialised in dealing with huge, hevy-weight linear and non-linear modelling (see an example in http://www.gams.com/modtype/index.htm) and they say it is almost the only option for doing it. I would like to know your opinion on the subject and, above all, if R can be an effective alternative and to what extent, if any. Thanks Vittorio
I am so surprised to hear "gams is specialised in dealing with huge, hevy-weight linear and non-linear modelling ". That is not what I know of about GAM, which means generalized additive model. On 10/27/06, vittorio <vdemart1 at tin.it> wrote:> At office I have been introduced by another company to new, complex energy > forecasting models using gams as the basic software. > I have been told by the company offering the models that gams is specialised > in dealing with huge, hevy-weight linear and non-linear modelling (see an > example in http://www.gams.com/modtype/index.htm) and they say it is almost > the only option for doing it. > > I would like to know your opinion on the subject and, above all, if R can be > an effective alternative and to what extent, if any. > > Thanks > Vittorio > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- WenSui Liu (http://spaces.msn.com/statcompute/blog) Senior Decision Support Analyst Cincinnati Children Hospital Medical Center
The people presenting the models cited as a reference the site www.gams.com which, as you said, is about high-level modeling system for mathematical programming and optimization. Vittorio Alle 17:52, venerd? 27 ottobre 2006, Ravi Varadhan ha scritto:> Can you be more specific about what you mean by "gams"? Do you mean > generalized additive models (GAM)? If so, R is a good environment for > forecasting models and GAM. However, the link that you provided is NOT for > generalized additive modeling, but it is for General Algebraic Modeling > System (GAMS), which is a high-level modeling system for mathematical > programming and optimization. > > Ravi. > > --------------------------------------------------------------------------- >- ------- > > Ravi Varadhan, Ph.D. > > Assistant Professor, The Center on Aging and Health > > Division of Geriatric Medicine and Gerontology > > Johns Hopkins University > > Ph: (410) 502-2619 > > Fax: (410) 614-9625 > > Email: rvaradhan at jhmi.edu > > Webpage: http://www.jhsph.edu/agingandhealth/People/Faculty/Varadhan.html > > > > --------------------------------------------------------------------------- >- -------- > > > -----Original Message----- > From: r-help-bounces at stat.math.ethz.ch > [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of vittorio > Sent: Friday, October 27, 2006 3:14 PM > To: r-help at stat.math.ethz.ch > Subject: [R] R & gams > > At office I have been introduced by another company to new, complex energy > forecasting models using gams as the basic software. > I have been told by the company offering the models that gams is > specialised > > in dealing with huge, hevy-weight linear and non-linear modelling (see an > example in http://www.gams.com/modtype/index.htm) and they say it is almost > the only option for doing it. > > I would like to know your opinion on the subject and, above all, if R can > be > > an effective alternative and to what extent, if any. > > Thanks > Vittorio > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html and provide commented, minimal, > self-contained, reproducible code.