[R] "Chow Test" for classification and regression trees

From: Charles M Cameron <ccameron_at_princeton.edu>
Date: Sat 10 Sep 2005 - 08:04:56 EST

Suppose one estimates a classification or regression tree (CART) for one group or one time period; and then estimates a CART for another group or time period. Is there a way to test for a structural change or break across the two groups or between the two time periods, in other words, is there an analogue of a Chow Test for CART? Has anyone ever seen anything like this or have any ideas how one could do it? Thanks for any suggestions.  

Charles Cameron
Professor of Politics & Public Affairs
Princeton University

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