R help - Sep 2005 - Extended Hypergeometric Distribution

Dear R Users,

There exists a non-central hypergeometric distribution function in the
(MCMCpack) package, and a hypergeometric distribution function in the (stats)
package.

Is there a function for sampling from an extended hypergeometric distribution?

Thanks,

Narcyz


This message is intended for the addressee named and may con...{{dropped}}

>>>>> "Narcyz" == Narcyz Ghinea <Narcyz.Ghinea at
swsahs.nsw.gov.au>
>>>>>     on Mon, 19 Sep 2005 12:38:27 +1000 writes:
    Narcyz> Dear R Users,

    Narcyz> There exists a non-central hypergeometric
    Narcyz> distribution function in the (MCMCpack) package, and
    Narcyz> a hypergeometric distribution function in the
    Narcyz> (stats) package.

    Narcyz> Is there a function for sampling from an extended
    Narcyz> hypergeometric distribution?

what is "extended" ?
Do you mean "extended to include non-central"?

Do you mean the generalized Hypergeometric distribution ??


*********************************************************************

-----Original Message-----
From: Martin Maechler [mailto:maechler at stat.math.ethz.ch] 
Sent: Tuesday, September 20, 2005 5:31 AM
To: Narcyz Ghinea
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] Extended Hypergeometric Distribution
>>>>> "Narcyz" == Narcyz Ghinea <Narcyz.Ghinea at
swsahs.nsw.gov.au>
>>>>>     on Mon, 19 Sep 2005 12:38:27 +1000 writes:
    Narcyz> Dear R Users,

    Narcyz> There exists a non-central hypergeometric
    Narcyz> distribution function in the (MCMCpack) package, and
    Narcyz> a hypergeometric distribution function in the
    Narcyz> (stats) package.

    Narcyz> Is there a function for sampling from an extended
    Narcyz> hypergeometric distribution?

what is "extended" ?
Do you mean "extended to include non-central"?

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>>>>> "Narcyz" == Narcyz Ghinea <Narcyz.Ghinea at
swsahs.nsw.gov.au>
>>>>>     on Wed, 21 Sep 2005 08:33:59 +1000 writes:
    Narcyz> By extended I mean multivariate. Technically it
    Narcyz> seems to refer to a very particular type of
    Narcyz> hypergeometric distribution i.e. "the multivariate
    Narcyz> Fisher's noncentral hypergeometric distribution"
    Narcyz> [ http://www.agner.org/random/theory/nchyp2.pdf ]

Thank you, Narcyz, for the clarification.

The paper you reference above mentions an implemenation in C++;
that should not be hard to interface to R, in theory at least

Regards,
Martin M??chler

 >>>>> "Narcyz" == Narcyz Ghinea <Narcyz.Ghinea at
swsahs.nsw.gov.au>
 >>>>>     on Mon, 19 Sep 2005 12:38:27 +1000 writes:

    Narcyz> Dear R Users,

    Narcyz> There exists a non-central hypergeometric
    Narcyz> distribution function in the (MCMCpack) package, and
    Narcyz> a hypergeometric distribution function in the
    Narcyz> (stats) package.

    Narcyz> Is there a function for sampling from an extended
    Narcyz> hypergeometric distribution?

 MM> what is "extended" ?
 MM> Do you mean "extended to include non-central"?