Desktop Survival Guide
by Graham Williams

Automatic Role Identification

Special variable names can be used with data imported into Rattle (and in fact for any data used by Rattle) to identify their role. Any variable with a name beginning with IGNORE_ will have the default role of Ignore. Similarly RISK_ and TARGET_. Any variable beginning with IMP_ is assumed to be an imputed variable, and if there exists a variable with the same name, but without the IMP_ prefix, that variable will be marked as Ignore.

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