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Re: st: GET SAMPLES IN STATA


From   Joseph Coveney <jcoveney@bigplanet.com>
To   Statalist <statalist@hsphsun2.harvard.edu>
Subject   Re: st: GET SAMPLES IN STATA
Date   Mon, 09 Feb 2004 20:57:02 +0900

You can flag training samples by -generate byte training = (uniform() < X)-,
where X is the percentage of the total dataset that you want to use for
training.  So, for example, if you want to use 33% for training and keep the
remaining 67% for holdout, then the commands would be:

set seed <seed>
generate byte training = uniform() < 0.33
<command> if training

Joseph Coveney


----------------------------------------------------------------------------
sgsr100 wrote:

>Hi,
>Do you know how can a get a training sample randomly chosen from stata
>and how can I keep the remaining observations as a holdout sample.
>Thanks,
>Sandra





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