Re: [R] Gam() function in R

2004-12-06 Thread Jari Oksanen
PROTECTED] Subject: RE: [R] Gam() function in R Unfortunately that's not really an R question. I recommend that you read up on the statistical methods underneath. One that I'd wholeheartedly recommend is Prof. Harrell's `Regression Modeling Strategies'. [BTW, there are now two implementations of gam

Re: [R] Gam() function in R

2004-12-06 Thread Yves Magliulo
, jari oksanen From: Liaw, Andy [mailto:[EMAIL PROTECTED] Sent: Sunday, December 05, 2004 11:34 PM To: 'Janice Tse'; [EMAIL PROTECTED] Subject: RE: [R] Gam() function in R Unfortunately that's not really an R question. I recommend that you read up on the statistical methods

Re: [R] Gam() function in R

2004-12-06 Thread Simon Wood
I'm a new user of R gam() function. I am wondering how do we decide on the smooth function to use? The general form is gam(y~s(x1,df=i)+s(x2,df=j)...) , how do we decide on the degree freedom to use for each smoother, and if we shold apply smoother to each attribute? I guess you

RE: [R] Gam() function in R

2004-12-06 Thread Janice Tse
-Original Message- From: Simon Wood [mailto:[EMAIL PROTECTED] Sent: Monday, December 06, 2004 5:54 AM To: Janice Tse Cc: [EMAIL PROTECTED] Subject: Re: [R] Gam() function in R I'm a new user of R gam() function. I am wondering how do we decide on the smooth function to use? The general form

Re: [R] Gam() function in R

2004-12-06 Thread Henric Nilsson
At 10:48 2004-12-06 +0100, Yves Magliulo wrote: this subject is very intersting for me. I'm using mgcv 0.8-9 with R version 1.7.1. You're in need of an update. i didn't know that there was an another gam version with package library(gam). This is the 'classic' GAM implementation by Hastie

Re: [R] Gam() function in R

2004-12-06 Thread Simon Wood
this subject is very intersting for me. I'm using mgcv 0.8-9 with R version 1.7.1. i didn't know that there was an another gam version with package library(gam). Someone can tell me the basics differences between them? I look for an help page on google but i only find mgcv help pages. - I

Re: [R] Gam() function in R

2004-12-06 Thread Yves Magliulo
so mgcv package is the one i need! indeed, i want integrated smoothness selection and smooth interactions rather than stepwise selection. i have a lot of predictor, and i use gam to select those who are efficient and exclude others. (using p-value) thanks a lot for those precious information.

Re: [R] Gam() function in R

2004-12-06 Thread Frank E Harrell Jr
Yves Magliulo wrote: so mgcv package is the one i need! indeed, i want integrated smoothness selection and smooth interactions rather than stepwise selection. i have a lot of predictor, and i use gam to select those who are efficient and exclude others. (using p-value) It is interesting that you

[R] Gam() function in R

2004-12-05 Thread Janice Tse
Hi all, I'm a new user of R gam() function. I am wondering how do we decide on the smooth function to use? The general form is gam(y~s(x1,df=i)+s(x2,df=j)...) , how do we decide on the degree freedom to use for each smoother, and if we shold apply smoother to each attribute? Thanks

RE: [R] Gam() function in R

2004-12-05 Thread Liaw, Andy
different from that in `gam'. I'm guessing you're referring to the one in `gam', but please remember to state which contributed package you're using, along with version of R and OS.] Cheers, Andy From: Janice Tse Hi all, I'm a new user of R gam() function. I am wondering how do we decide

RE: [R] Gam() function in R

2004-12-05 Thread Janice Tse
-Original Message- From: Liaw, Andy [mailto:[EMAIL PROTECTED] Sent: Sunday, December 05, 2004 11:34 PM To: 'Janice Tse'; [EMAIL PROTECTED] Subject: RE: [R] Gam() function in R Unfortunately that's not really an R question. I recommend that you read up on the statistical methods underneath