Practical Predictive Analytics

Plotting the data

Once the query has completed, issue a display command so that we can perform some visualizations.

        display(result2)

1. Once the display has run, select the "Plot Options" icon (third icon bottom left), and select a Stacked bar chart plot from the plot menu.
2. Drag k (counts) to the Values box.
3. Drag outcome and correct to the Series grouping box.

 

4. Click Apply to update the visualization:

• As can be seen from the plot below, The lowest (and best) error for a predictor class was for the non-diabetic patients (bars 1-5, Outcome 0, Prediction N).
• The highest error can be seen for cases in which diabetes was predicted, but the patient was, in fact, nondiabetic (bars 6-11, Outcome 0, Prediction Y).
• A critical category, undetected ...