Workflow Entry: Operator testing workflow

This workflow is used for operator testing. It joins dataset metafeatures with execution times and performanse measures of the selected recommendation operator.

In the Extract train and Extract test Execute Process operator user should open Metafeature extraction workflow.

In the Loop Operator train/test data are used to evaluate performanse of the selected operator. Result is remebered and joined with the time and metafeature informations.

This workflow can be used both for Item Recommendation and Rating Prediction operator testing. All needed changes are to be made in the Loop Operator.