[R] Fw: Variable selection based on both training and testing data

From: SR Millis srmil...@yahoo.com To: Jin Minming jminm...@yahoo.com Sent: Monday, January 30, 2012 9:25 AM Subject: Re: [R] Variable selection based on both training and testing data Jim, First, stepwise methods for variable selection should be avoided.  Frank Harrell (in Regression

[R] Fw: Variable selection based on both training and testing data

From: SR Millis srmil...@yahoo.com To: Jin Minming jminm...@yahoo.com Sent: Monday, January 30, 2012 9:25 AM Subject: Re: [R] Variable selection based on both training and testing data Jim, First, stepwise methods for variable selection should be avoided.  Frank Harrell (in Regression

Re: [R] Fw: Variable selection based on both training and testing data

...@wayne.edu Subject: [R] Fw: Variable selection based on both training and testing data To: r-help@r-project.org r-help@r-project.org Date: Monday, 30 January, 2012, 14:57 From: SR Millis srmil...@yahoo.com To: Jin Minming jminm...@yahoo.com Sent: Monday, January 30, 2012 9:25 AM Subject

Re: [R] Fw: Variable selection based on both training and testing data

-project.org; SR Millis aa3...@wayne.edu Sent: Monday, January 30, 2012 11:30 AM Subject: Re: [R] Fw: Variable selection based on both training and testing data Dear Scott, I am so sorry that I think I just sent an empty email to you. Thanks a lot for your advice. The problem is that we do not have