To launch the tree builder, run a flow containing a C&R Tree, QUEST, or
CHAID node, making sure the Launch interactive tree builder option is
selected on the Objectives tab in the node properties. Then double-click the interactive tree output
in the Outputs pane:Figure 1. Interactive tree output item
The interactive tree builder opens a view of the current tree, starting with
the root node. You can switch between a High-level view and a
Detailed view.
To grow the tree, right-click the root node and
select Grow tree.
The system builds the tree by recursively splitting each branch until one
or more stopping criteria are met. At each split, the best predictor is automatically selected
based on the modeling method used.
Alternatively, select Grow tree one level only to add
a single level.
To remove a split from the tree, select Remove split.
After working on a tree, you can generate a model from it. Click Generate a
model. The model nugget will be added to your flow canvas.
Reading split rules
When viewing split rules, square brackets mean that the adjacent value is
included in the range, whereas parentheses indicate that the adjacent value is excluded from the
range. For example, the expression (23,37] means from 23 exclusive to 37 inclusive;
that is, from just above 23 to 37. In other words:
