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Re: st: RE: large numbers in comb(n,k) function: no success


From   Inna Becher <[email protected]>
To   [email protected]
Subject   Re: st: RE: large numbers in comb(n,k) function: no success
Date   Thu, 05 Feb 2009 12:06:33 +0100

Thanks a lot Maarten and Nick.
unfortunately could lnfactorial not manage the problem as well...


Nick Cox schrieb:
In addition to Maarten's comments: This is why lnfactorial() is
supplied. Often you can only work with the logarithms of large numbers
that arise in combinatorial problems. Nick [email protected]
Inna Becher

I would like to implement a comb(n,k) function. But my Stata does not allow it because of large n, k-numbers. N=180000 and k=2000. Is there any other way to do it? I wasn't successful by using exp(lnfactorial(n))

in mata as well.


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