I'm not familiar with the Plackett-Dale model, and
RSiteSearch("Plackett-Dale") produced nothing. Google led me to an
article on "Plackett-Dale Inference to Study Inheritance"
(http://doclib.uhasselt.be/dspace/bitstream/1942/466/1/molg23.pdf#search=%22Plackett-Dale%22).
This article discusses parameter estimation to maximize a
pseudo-likelihood for a "Plackett-Dale distribution", defined in other
references. If you can write a function to compute the Plackett-Dale
distribution, it should not be too difficult to maximize it (or minimize
the negative of its logarithm). From that you should be able to get
Wald approximate confidence intervals, likelihood ratio tests, etc.
However, unless it's available under some other name, it looks to
me like it's not included in any current CRAN package.
I know this is not what you wanted, but I hope it helps.
Spencer Graves
Pryseley Assam wrote:
> Dear R users,
>
> Can someone inform me about a library/function in R that fits a
> Plackett-Dale model ?
>
> Thanks in advance
> Pryseley
>
>
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