[R] Ordinal data - Regression Trees & Proportional Odds

From: Volker Schlecht <volker.schlecht_at_wiwi.uni-karlsruhe.de>
Date: Fri 15 Jul 2005 - 22:43:13 EST

Dear Dr. Fieberg,

you used a regression tree approach to explore ordinal data set in addition to the proportinal odds model. I find this very interesting. I would like to know, how good the results of the regression tree approach turned out in comparison to the proportional odds model. Since people very often treat ordinal data as continuous, I would like to know how successfull this strategy is. I mean, I can see, what may be a reason to do this: One could argue that ordinal data an a sufficiently large scale (say 1 to 10) are just coarsely measured continuous data.

I would be delighted if you could tell me your experiences about the treatment of ordinal data with models for continuous data. Also I would be delighted, if you could tell me, if your results are published somewhere.

Best wishes,

Volker Schlecht

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