[R] simulate null hypothesis

Weiwei Shi helprhelp at gmail.com
Thu Jun 14 17:02:43 CEST 2007


Hi, there:

This is a bit off-topic but I try to do it in R so I put it here:

I have 31 samples from a population of genes, and each sample contains
a pair of gene lists, with different lengths and the intersection
between the two lists also varies. I want to test my hypothesis by
creating a null hypothesis for this population. Since the distribution
for the length and the distribution for the intersection size do not
follow any known distribution, I think I need to use sample with
replacement to simulate those "parameters". And use the parameters to
permutate genes; but I am not very sure if it is alll right.

BTW, is there any general package or I just need "sample()" to do
that? (just tried to make my question on-topic:)

thanks,

-- 
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III



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