Custom Split Groups
- Select a continuous variable in the Predictor variables pane in the Weight of Evidence (WoE) Startup Panel.
- Click the Customize groups button to display the Custom Split Groups dialog box, which contains options to apply custom splits to the selected continuous predictor.
Creating New Splits
- Select the desired partition in the Groups pane to examine.
- Use the slider in the Split pane (or the value edit field) to set a specific split.
- Click the Recalc button to examine various statistics for the proposed split before applying it via the Split button.
- You can also click the Qsplit button to automatically split the selected partition in the location where the Interval WoE graph shows the greatest difference and where the minimum number of Bad cases is greater than the Min Bad N.
Collapsing Partitions
To combine (collapse) partitions
- Select the respective adjacent intervals in the Groups pane.
- Click the Collapse button, and the selected intervals will then be collapsed into a single new interval, and the results will be updated. The partition labeled Missing is the group of observations with missing predictor values.
- To pair the Missing group, select the Missing category and respective interval and click the Collapse button.
Restore
Click this button to restore the default partitioning (data shown when this dialog box was first displayed).
Group Summary
The Group Summary pane contains the summary of the partition for the selected predictor variable and for the selected group type. This pane is updated after a group is collapsed or split.
Groups
The Groups pane shows the current selected partitioning (based on the selected group type) of the selected predictor variable.
WoE
The WoE pane contains a graph of the WoE values for all possible values either over the specific partition or Interval, or the entire Overall value range. Specifically, the graph will contain two lines:
Split
Click this button to set the split as defined (for example, at the specific value) in the Split pane).
Collapse
Click this button to collapse selected adjacent groups. Non-contiguous intervals cannot be collapsed.
Qsplit
Click this button to automatically select a split with the greatest WoE difference between the two resulting groups, subject to the condition that the minimum N in each group is greater than the Min bad N value.
Create k custom groups with equal.
Use the options in this group box to create k custom non-optimal groups.
Add or edit comments in this box
Only text can be used, and cannot exceed 2,000 characters. The comments will be displayed in the header of the custom crosstabulation output.
Accept
Click this button to accept the current partitioning. This partitioning will be set as the Custom group type in the Weight of Evidence (WoE) Startup Panel.