bivariate Poisson

[drfg2008]

How would you calculate with SPSS the equivalent  bivariate Poisson function for the following univariate Poisson:

CDF.POISSON (k, lambda)

when Lambda of Group 1, Lambda of Group 2 and the correlation between the two distributions is given.


Frank

[Kelly Vander Ley]

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[David Marso]

This might lead you in some direction!
Not SPSS but maybe if you have the background to follow it a Python or MATRIX solution should be simple.
I lack the motivation/interest/personal requirements to bother with it, but... have fun and post back what you come up with.
http://filebox.vt.edu/users/pasupath/papers/shin-pasupathyR3.pdf
---

drfg2008 wrote

How would you calculate with SPSS the equivalent  bivariate Poisson function for the following univariate Poisson:

CDF.POISSON (k, lambda)

when Lambda of Group 1, Lambda of Group 2 and the correlation between the two distributions is given.


Frank

[drfg2008]

I thought it might be possible that a plugin with R or something like that exists (If R has this feature at all).

[Albert-Jan Roskam]

hi:

http://www.mirrorservice.org/sites/lib.stat.cmu.edu/R/CRAN/doc/packages/bivpois.pdf

 

Cheers!!
Albert-Jan

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
All right, but apart from the sanitation, the medicine, education, wine, public order, irrigation, roads, a fresh water system, and public health, what have the Romans ever done for us?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

---

From: drfg2008 <[hidden email]>
To: [hidden email]
Sent: Sunday, January 15, 2012 7:57 PM
Subject: Re: [SPSSX-L] bivariate Poisson

I thought it might be possible that a plugin with R or something like that
exists (If R has this feature at all).



-----
Dr. Frank Gaeth
FU-Berlin

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[Rich Ulrich]

That's a nice reference.

In addition to providing access to source code to their own 
improved method, the authors provide a usable description
of the other two algorithms, along with their respective limitations. 

(I would hope that I could settle for one of the simpler methods,
but I did not check out their code for complexity.)

--
Rich Ulrich

> Date: Sat, 14 Jan 2012 13:35:27 -0800

> From: [hidden email]
> Subject: Re: bivariate Poisson
> To: [hidden email]
>
> This might lead you in some direction!
> Not SPSS but maybe if you have the background to follow it a Python or
> MATRIX solution should be simple.
> I lack the motivation/interest/personal requirements to bother with it,
> but... have fun and post back what you come up with.
> http://filebox.vt.edu/users/pasupath/papers/shin-pasupathyR3.pdf
> ---
>
> drfg2008 wrote
> >
> > How would you calculate with SPSS the equivalent bivariate Poisson
> > function for the following univariate Poisson:
> >
> > CDF.POISSON (k, lambda)
> >
> > when Lambda of Group 1, Lambda of Group 2 and the correlation between the
> > two distributions is given.
> >

[...]

[David Marso]

I briefly examined the code.  Would take a bit of effort to translate over to Python or MATRIX.
Looks like there exists an R package.

Rich Ulrich-2 wrote

That's a nice reference.

In addition to providing access to source code to their own  
improved method, the authors provide a usable description
of the other two algorithms, along with their respective limitations.  

(I would hope that I could settle for one of the simpler methods,
but I did not check out their code for complexity.)

--
Rich Ulrich

> Date: Sat, 14 Jan 2012 13:35:27 -0800
> From: [hidden email]
> Subject: Re: bivariate Poisson
> To: [hidden email]
>
> This might lead you in some direction!
> Not SPSS but maybe if you have the background to follow it a Python or
> MATRIX solution should be simple.
> I lack the motivation/interest/personal requirements to bother with it,
> but... have fun and post back what you come up with.
> http://filebox.vt.edu/users/pasupath/papers/shin-pasupathyR3.pdf
> ---
>
> drfg2008 wrote
> >
> > How would you calculate with SPSS the equivalent  bivariate Poisson
> > function for the following univariate Poisson:
> >
> > CDF.POISSON (k, lambda)
> >
> > when Lambda of Group 1, Lambda of Group 2 and the correlation between the
> > two distributions is given.
> >
[...]

[drfg2008]

would be nice to have it as an SPSS extention ; - )

[David Marso]

You should write it.  Would be great practice and I'm sure you would learn a great deal doing so.

drfg2008 wrote

would be nice to have it as an SPSS extention ; - )

[drfg2008]

beyond my abilities, I'm afraid.