[DDI-users] representing analyses in DDI

[Wendy Thomas]

Paul,

Your original data set is your data source. Your new data set containing 
variables that result from analysis of this source are recorded in the new 
set of variables. Each variable would point back to a generation 
instruction which provides the description and algorithem of the process 
used to create the new variable.

The generation instruction can reference the source variable(s) and assign 
them a mnemonic. r:Description captures a human readable description of 
the process and r:Command can capture the actual alorithen and you can 
also attach a command code script.

Wendy


On Mon, 7 Mar 2011, Hodor, Paul [USA] wrote:

> Hi all,
>  
> I am trying to figure out where in DDI a data analysis process should be
> captured. Is there any recommended way to represent and document analyses
> algorithms? For example, suppose I have a dataset from which I would like to
> generate some tables with summary statistics, some plots of variable
> correlations, perhaps a non-linear curve-fitting that produces parameter
> values and plots. The analysis is done with an R script and the output is a
> PDF report. I know how to represent the input dataset in DDI, but need to
> also capture the rest of the process and the location of the generated PDF
> file. Any opinions will be appreciated.
>  
> Regards,
> Paul
>  
> Paul Hodor, PhD
> Associate
>  
> Booz | Allen | Hamilton
> [IMAGE]
> One Preserve Parkway, Suite 200
> Rockville, MD 20852
> Tel: 301-251-7236
> Email: hodor_paul at bah.com
>  
>  
>  
> 
>

-- 
Wendy L. Thomas                          Phone: +1 612.624.4389
Data Access Core Director		 Fax:   +1 612.626.8375
Minnesota Population Center              Email: wlt at pop.umn.edu
University of Minnesota
50 Willey Hall
225 19th Avenue South
Minneapolis, MN 55455