Re: [R] does multinomial logistic model from multinom (nnet) has logLik?

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Thu 23 Feb 2006 - 00:53:53 EST

On Wed, 22 Feb 2006, ronggui wrote:

> I want to get the logLik to calculate McFadden.R2 ,ML.R2 and
> Cragg.Uhler.R2, but the value from multinom does not have logLik.So my
> quetion is : is logLik meaningful to multinomial logistic model from
> multinom?If it does, how can I get it?

>From the help page:

Value:

      A 'nnet' object with additional components:

deviance: the residual deviance.

So it has a residual deviance. That is -2 log Lik in many cases (but not if the argument 'summ' is used)

> Thank you!
>
> ps: I konw VGAM has function to get the multinomial logistic model
> with logLik, but I prefer use the function from "official" R
> packages .
>
> --
> ronggui
> Deparment of Sociology
> Fudan University

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Thu Feb 23 01:13:19 2006

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