[R] Help，Suggest me some methods to identify training set and test set!!!

[Steve Lianoglou]

Hi,

On Mon, Dec 21, 2009 at 9:09 AM, bbslover <dluthm at yeah.net> wrote:
>
> I want to split my whole dateset to training set and test set, building model
> in training set, and validate model using test set. Now, How can I split my
> dataset to them reasonally. Please give me a hand, It is better to give me
> some R code.
>
> and I see some ways like using SOM to project whole independents to
> 2-dimensions and find some to be training set and others are test set.  like
> below. I also want to do this. and my date is in xls accessory. Please help
> me.  and excel file is 218*47 matrix, 47 are indepents. I want to project it
> to 2D and label the corresponding sample label like that picture below.

I noticed Max already pointed you to the caret package.

Load the library and look at the help for the createFolds function, eg:

library(caret)
?createFolds

-steve

-- 
Steve Lianoglou
Graduate Student: Computational Systems Biology
 | Memorial Sloan-Kettering Cancer Center
 | Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact