Example of Predictor Screening
You are interested in understanding what factors, or features, are most likely to predict a response. Consider a data table containing measurements from machinery in a rotogravure printing business. The data set contains 539 records and 38 variables.
1. Select Help > Sample Data Folder and open Bands Data.jmp.
2. Select Analyze > Screening > Predictor Screening.
3. Select Banding? as Y, Response.
4. Select the grouped columns grain screened to chrome content and click X.
5. Click OK.
Figure 25.2 Ranked Column Contributions
Note: Because this analysis is based on the Bootstrap Forest method that has a random selection component, your results can differ slightly from those in Figure 25.2. See “Bootstrap Forest”.
The columns are sorted and ranked in order of contribution in the bootstrap forest model. Predictors with the highest contributions are strong candidate predictors for the response of interest.
Tip: Click on a column heading to change how the columns are sorted in the table.