Counting and Recounting Decision Trees
Tree counting occurs automatically the first time you change the node view to Counts in the Tree View, or the first time you select the Profile View or Leaf View during the current session of the decision tree.
Counting, and later recounting, ensures that statistics are available for the various views.
Once a decision tree is counted initially, all subsequent recounts, in all views, must be performed manually.
Count a tree by changing the node view.
These decision tree views include:
- TREE: Edit and refine your tree, with the following options:
- Use display Template compact or counts:
- Compact: displays decision node values without statistics (default view). This view always appears when you open a tree, even if you had selected Counts in a previous session.
- Counts: displays decision node values, with options to display the raw and weighted total number of counts and percent of total.
- Color decision nodes:
- No Color is the default.
- Treatments shows the proportion of treatments per node, based on your existing treatment colors.
Note If the display template is set to Compact and you then select , the display template is set to Counts.
- Use display Template compact or counts:
- PROFILE: Profile the nodes of your tree and the target variable (for target-driven decision trees).
- LEAF: Analyze treatments using leaf node statistics.
- TREATMENTS: View and analyze a summary of treatments.
If you have not specified which profiling variables you are interested in, you will be prompted to do so when a tree count requires it; just select one or more variables presented from the drop-down list.
When you modify your tree, such as editing or inserting splits, or merging rows, you will need to click Recount to update the count. Alternatively, you can right-click a decision node and select Trigger recount.