The first five values on each line are the x predictors. The last value on each line is the target y variable to predict. The demo creates a decision tree model, evaluates the model accuracy on the ...

This month we'll look at classification and regression trees (CART), a simple but powerful approach to prediction 3. Unlike logistic and linear regression, CART does not develop a prediction equation.

The demo program creates a decision tree regression model where the tree has seven nodes. After the tree is created, the demo program computes the model accuracy on the training data as 0.9000 (9 out ...