Building the Stream

  1. To build the stream, add a Statistics File source node pointing to telco.sav located in the Demos directory of your IBM® SPSS® Modeler installation.
    Figure 1. Building the stream
    Building the stream
  2. Add a Type node to define fields, and specify churn as the target field (Role = Target). Role should be set to Input for all of the other fields so that this is the only target.
    Figure 2. Setting the target
    Setting the target
  3. Confirm that field measurement levels are defined correctly. For example, most fields with values 0 and 1 can be regarded as flags, but certain fields, such as gender, are more accurately viewed as a nominal field with two values.
    Figure 3. Setting measurement levels
    Setting measurement levels

    Tip: To change properties for multiple fields with similar values (such as 0/1), click the Values column header to sort fields by that column, and use the Shift key to select all of the fields you want to change. You can then right-click on the selection to change the measurement level or other attributes for all selected fields.

  4. Attach a Data Audit node to the stream. On the Settings tab, leave the default settings in place to include all fields in the report. Since churn is the only target field defined in the Type node, it will automatically be used as an overlay.
Figure 4. Data Audit node, Settings tab
Data Audit node, Settings tab

On the Quality tab, leave the default settings for detecting missing values, outliers, and extreme values in place, and click Run.

Figure 5. Data Audit node, Quality tab
Data Audit node, Quality tab

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