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    DATA MINING
     Desktop Survival Guide by Graham Williams  | 
    
    
     
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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.