Combine values or ranges based on the similarity of symbolic predictor behavior.
- In the Data analysis step, click a symbolic predictor.
- In the predictor workspace, click the Grouping tab.
field, enter the maximum probability of
spurious difference in behavior.
Reducing this probability reduces interval or category numbers.
Minimum size (% of samples)
field, enter the minimum
number of cases in each interval or category. Click
Use it to ensure that the behavior evidence is sufficient to be used in grouping. Intervals with few cases are combined with their nearest neighbor. Categories with few cases are combined into a residual bin.
- Optional: To read the data in a graph or a table, click the Graphical view tab or the Tabular view tab
When this option is enabled, categories are combined with any other category most similar in behavior. After you disable it, the order of the symbolic categories is assumed to have some meaning and only the neighboring categories are grouped.
Merge bins below minimum size
When this option is enabled, the categories below the minimum size are grouped in a residual bin on the assumption of insufficient cases for the behavior to be the basis for grouping.
- Confirm your updates by clicking Submit.