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Predictive Analytics Using Rattle and Qlik Sense by Ferran Garcia Pagans

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In Rattle, you have to explicitly declare the role of each variable. A variable can have five different roles:

  • Input: The prediction process will use input variables to predict the value of the target variable.
  • Target: The target variable is the output of our model.
  • Risk: The risk variable is a measure of the target variable.
  • Ident or Identifier: An identifier is a variable that identifies a unique occurrence of an object. In our preceding example, the variable Person is an identifier that identifies a unique person.
  • Ignore: A variable marked Ignore will be ignored by the model. We'll come back to this role later-some variables can create noise and decrease the performance of your predictive model.

Rattle can load data from many data sources. ...

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