Re: [R] value of complexity parameter in ridge regression

2007-04-18 Thread Simon Wood
> What is the optimum range to look for a value of lambda while doing ridge > regression. Can/ should lambda be greater than 1 ? -- I think it's data dependent, but lambda can certainly be greater than one. For many ridge regression problems you can choose lambda `objectively' by generalized cro

[R] value of complexity parameter in ridge regression

2007-04-17 Thread sikander hayat
Hi, What is the optimum range to look for a value of lambda while doing ridge regression. Can/ should lambda be greater than 1 ? I have conflicting (or what appears conflicting to me) sources that use lambda >= 0, without any upper limit, but that makes the search space infinite.. right ?? So