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Modeling and Multivariate Methods - SAS

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346 Recursively Partitioning Data Chapter 13<br />

Example<br />

Figure 13.19 Boosted Tree Report<br />

Compare <strong>Methods</strong><br />

The Decision Tree method produced a tree with 7 splits. The Bootstrap Forest method produced a final tree<br />

with 20 component trees. The Boosted Tree method produced a final tree with 50 component trees.<br />

The Validation R-Square from the three methods are different, with the Boosted Tree having the best:<br />

• Decision Tree 0.647<br />

• Bootstrap Forest 0.716<br />

• Boosted Tree 0.847<br />

The actual-by-predicted plots show that the Boosted Tree method is best at predicting the actual median<br />

home values. The points on the plot are closer to the line for the Boosted Tree method.

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