[ml] R workshop tonight: parameter and feature selection on spam dataset

Joe Hale joe at jjhale.com
Wed Nov 10 15:37:46 PST 2010


Hey,

Thanks Erin! Just want to note a couple of dependencies which some
people may not have installed.

I just ran the code on a fairly clean R install on Mac OS X and found
I needed to install three R packages:
* leaps
* lars
* pls

This is easily done in the R GUI from Packages & Data -> Package Installer

Cheers,

Joe



On 10 November 2010 10:33, mnsqerr <mnsqerr at webmail.co.za> wrote:
> Hi Everyone,
> Tonight I will host an workshop on using Ridge and Lasso Regression to scale
> the influence that particular features have on your prediction.  We will also
> briefly discuss Best Subset Selection.
>
> The sample code has been checked into our git repo in the subdirectory
> R_Ridge-Lasso.  There is a link to a spam dataset in the comments of the code.
> git clone
> git://ml-noisebridge.git.sourceforge.net/gitroot/ml-noisebridge/ml-noisebridge
>
> Remember that we are starting this talk at 8:15, not the usual 7:30.  We can
> take some time to discuss the Stanford lecture problems if people want to do
> that at 7:30.
> See you tonight!
>
> -Erin
>
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