Re: [R] Logistic Regression - Variable Selection Methods With Prediction

2011-10-26 Thread Marc Schwartz
The reason that you are not likely getting replies is that what you propose to do is considered a poor way of building models. You need to get out of the "SAS Mindset". I would suggest you obtain a copy of Frank Harrell's book: http://www.amazon.com/exec/obidos/ASIN/0387952322/ and then con

Re: [R] Logistic Regression - Variable Selection Methods With Prediction

2011-10-26 Thread Bert Gunter
You mean the glm() _function_ in the stats package. ?glm (just to avoid confusion) -- Bert On Wed, Oct 26, 2011 at 10:31 AM, wrote: > Try the glm package > > Steve Friedman Ph. D. > Ecologist / Spatial Statistical Analyst > Everglades and Dry Tortugas National Park > 950 N Krome Ave (3rd Fl

Re: [R] Logistic Regression - Variable Selection Methods With Prediction

2011-10-26 Thread Weidong Gu
Check glmulti package for all subset selection. Weidong Gu On Wed, Oct 26, 2011 at 12:35 PM, RAJ wrote: > Can I atleast get help with what pacakge to use for logistic > regression with all possible models and do prediction. I know i can > use regsubsets but i am not sure if it has any prediction

Re: [R] Logistic Regression - Variable Selection Methods With Prediction

2011-10-26 Thread Steve Lianoglou
Hi, On Wed, Oct 26, 2011 at 12:35 PM, RAJ wrote: > Can I atleast get help with what pacakge to use for logistic > regression with all possible models and do prediction. I know i can > use regsubsets but i am not sure if it has any prediction functions to > go with it. Maybe you could try glmnet

Re: [R] Logistic Regression - Variable Selection Methods With Prediction

2011-10-26 Thread Steve_Friedman
Try the glm package Steve Friedman Ph. D. Ecologist / Spatial Statistical Analyst Everglades and Dry Tortugas National Park 950 N Krome Ave (3rd Floor) Homestead, Florida 33034 steve_fried...@nps.gov Office (305) 224 - 4282 Fax (305) 224 - 4147 __

Re: [R] Logistic Regression - Variable Selection Methods With Prediction

2011-10-26 Thread RAJ
Can I atleast get help with what pacakge to use for logistic regression with all possible models and do prediction. I know i can use regsubsets but i am not sure if it has any prediction functions to go with it. Thanks On Oct 25, 6:54 pm, RAJ wrote: > Hello, > > I am pretty new to R, I have alwa

[R] Logistic Regression - Variable Selection Methods With Prediction

2011-10-25 Thread RAJ
Hello, I am pretty new to R, I have always used SAS and SAS products. My target variable is binary ('Y' and 'N') and i have about 14 predictor variables. My goal is to compare different variable selection methods like Forward, Backward, All possible subsests. I am using misclassification rate to p