[R] robust polr
Prof Brian Ripley
ripley at stats.ox.ac.uk
Sat Jul 21 07:28:34 CEST 2012
On 20/07/2012 22:06, Anthony Dick wrote:
> Hello,
>
> I am wondering if there is a robust estimation version of polr(),
> similar to the lm() -> rlm(). If not, can anyone suggest a way to do
> robust estimation with polr()?
>
> Thanks,
>
> Anthony
No: What would it mean to have a long-tailed distribution of a ordered
categorical response?
There are ways to allow for misclassification of training data in
logistic regression, including polr, but they are very different in
flavour and implementation from robust regression.
--
Brian D. Ripley, ripley at 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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