Lift

For a brief description, see Test Metrics for Classification Models.

The Lift graph displays at least three lines: a line showing lift for each model, a red line for the random model, and a vertical blue line for threshold.

The Lift viewer compares lift results for a given target value in two or more models.The Lift viewer displays either Cumulative Positive Cases and Cumulative Lift.

If you are comparing lift for two or more models, the lines for different models are different colors. The table below the graph shows the name of the model and the color used to display results for that model.

The viewer has the following controls:

The x-axis of the graph is divided into quantiles.

The graph shows the lift from the model (or models) and also shows the lift from a naive model (Random) and the ideal lift.

The threshold is a blue vertical line used to select a quantile. As the threshold moves, the details for each test result in the lift detail table changes to the point on the lift chart that corresponds to the selected quantile. You move the threshold by dragging the indicator on the quantile line. Here is the quantile set to 20: quntile set to 20

Below the graph, a data table supplements the information presented in the graph. You can minimize the table using the splitter line.

The table has the following columns:

Above the Models grid is the Lift Detail Dialog icon browse detail
Select a model and click the icon to launch the Lift Detail Dialog, which displays lift details for 100 quantiles.

By default, results for all models in the node are displayed. To change the list of models, click compare models
and deselect any models for which you do not want to see results. If you deselect a model, both the lift curve and the detail information for that model are not displayed.