hi, i'm new to PredictionIO and i'm trying to use the E-Commerce
Recommender with some sample data, but when i launch pio train i get this
error which cause the train to abort:
"Exception in thread "main" java.lang.IllegalArgumentException: requirement
failed: viewEvents in PreparedData cannot be empty. Please check if
DataSource generates TrainingData and Preprator generates PreparedData
correctly."
i imported events from input file with required json format:
{"entityType": "user", "targetEntityType": "item", "event": "buy",
"entityId": "341785", "eventTime": "2013-01-02T18:42:15.716Z",
"targetEntityId": "150020361"}
does it mean that there must be at least some "view" events in the data
otherwise the recommender cannot train properly?
thanks
Marco
