From: Max Williams <toastkid.williams@...>
Date: 2008-07-01T23:15:21+09:00
Subject: Re: how to - quickly make permutations?

Axel Etzold wrote:

> what are you trying to do ? The number of subsets is enormous... maybe 
> there's
> an easier way to achieve your goal.
> 
> Best regards,
> 
> Axel

Maybe there is...it's a little program to help my wife out with a bit of 
data processing.  I have a bunch of columns (50ish) that each list a 
group of people.  The people overlap between columns and we want to look 
at what happens to the total degree of overlap when groups of columns 
are removed.  So, i was going to try removing each column and calculate 
the total overlap for each case.  Then, remove every possible pair of 
columns, recalculate for each case.  Then, every possible trio of 
columns, etc.  And keep going until the number of subsets to test starts 
to get impractical.  Which might happen quite quickly as you suggest.
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