random forest variable selection using Variable Importance (VIMP) (Breiman2001a) and Minimal Depth (Ishwaran, Kogalur, Gorodeski, Minn, and Lauer2010), a property de-rived from the construction of each tree within the forest. We will also demonstrate the use of variable dependence and partial dependence plots (Friedman2000) to aid in the

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    The plot method for MARS model objects provide convenient performance and residual plots. Figure 4 illustrates the model selection plot that graphs the GCV (left-hand y-axis and solid black line) based on the number of terms retained in the model (x-axis) which are constructed from a certain number of original predictors (right-hand y-axis).

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    random forest variable selection using Variable Importance (VIMP) (Breiman2001a) and Minimal Depth (Ishwaran, Kogalur, Gorodeski, Minn, and Lauer2010), a property de-rived from the construction of each tree within the forest. We will also demonstrate the use of variable dependence and partial dependence plots (Friedman2000) to aid in the But, first, let's review the basic principles of the Random Forests method. Figure 1. A Random Forest is built one tree at a time. A Random Forest is a collection of decision trees. Each tree gets a "vote" in classifying. There are two components of randomness involved in the building of a Random Forest.

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