methods (see also Chen, Liaw, and Breiman 2004, for the alternative strategy of “down sampling”, i.e., sampling from the majority class as few observations as there are of the minority class), even though the interpretation of interaction effects in Berk (2006) is not coherent, as demonstrated above. The original works of Breiman (1996a,b, 1998a,b, 2001a,b), to name a few, are also well suited and not too technical for further reading.