Modeling and Multivariate Methods - SAS

328 Recursively Partitioning Data Chapter 13
Partition Method
Save Leaf Label Formula saves a column containing a formula in the data table that computes the leaf
label.
Make SAS DATA Step creates SAS code for scoring a new data set.
Make Tolerant SAS DATA Step creates SAS code that can score a data set with missing values.
Color Points colors the points based on their response level. This is for categorical responses only, and
does the same thing as the Color Points button (see “Categorical Responses” on page 323).
Script
contains options that are available to all platforms. See Using JMP.
Note: JMP 8 had a Partition Preference, and a Partition platform option, called Missing Value Rule. These
have both been removed for JMP 9. The new method for handling missing values is described in “Missing
Values” on page 340.
Automatic Splitting
The Go button (shown in Figure 13.9) appears when you have validation enabled. For more information on
using validation, see “Validation” on page 335.
The Go button provides for repeated splitting without having to repeatedly click the Split button. When
you click the Go button, the platform performs repeated splitting until the validation R-Square is better
than what the next 10 splits would obtain. This rule may produce complex trees that are not very
interpretable, but have good predictive power.
Using the Go button turns on the Split History command. If using the Go button results in a tree with
more than 40 nodes, the Show Tree command is turned off.
Figure 13.9 The Go Button