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This step allows you to output data from PDI to a file in Weka's Attribute Relation File Format (ARFF).

ARFF format is essentially the same as comma separated values (CSV) format, except with the addition of metadata on the attributes (fields) in the form of a header.

For more information, including procedures on how to use this step, see Using the ARFF Output Plugin on the Weka wiki page.

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