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Are predictors in a decision (classification) tree restricted to appear in only branch?

Technote (troubleshooting)


I am using the Decision Tree procedure (TREE command) to build a tree. I noticed that each of the predictors that appears in the tree below the first level appears in only one branch. Is this outcome determined by the algorithm?

Resolving the problem

Predictors are not restricted from appearing in multiple branches of a decision tree, either at the same level or on different levels. In your tree, each predictor below level 1 appeared in only one branch, but this an empirical result specific to that tree.

Historical Number


Document information

More support for: SPSS Statistics

Software version: 18.0

Operating system(s): Platform Independent

Reference #: 1487532

Modified date: 06 March 2014