Richard A. Berk, An Introduction to Ensemble Methods for Data Analysis, Sociological Methods & Research 2006 34: 263-295.

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 adidactic 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.

Key Words: CART • data analysis • algorithmic methods • ensemble methods

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