Chunk #37 — The Methods — How Do Classification and Regression Trees Work? — Prediction and Interpretation of Classification and Regression Trees

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An introduction to recursive partitioning: rationale, application, and characteristics of classification and regression trees, bagging, and random forests.

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The predicted response classes in our example are the majority class in each node in Figure 1 (left), as indicated by the shading in Figure 1 (right): Subjects who have not lied to their parents as well as those who have lied to their parents but drank alcohol in one or less occasions are not likely to intend to smoke, while those who have lied to their parents and drank alcohol in 2 or more occasions are likely to intend to smoke within the next year.