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This article provides an introduction to ensemble statistical procedures as a special case of algorithmic methods. The discussion begins with classification and regression trees (CART) as a didactic device to introduce many of the key issues. Following the material on CART is a consideration of cross-validation, bagging, random forests, and boosting. Major points are illustrated with analyses of real data.

An Introduction to Ensemble Methods for Data Analysis’, RichardA.BerkSociological Methods & Research, 34 (3) (2006): 263–295. Published by SAGE Publications, Inc. Reprinted with permission.
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