com.cloudera.oryx.app.als

Interface Rescorer

All Known Implementing Classes:

MultiRescorer

public interface Rescorer

Implementations of this interface can "rescore" the recommender's score for a item that is a candidate for recommendation. It can boost or demote an item given its ID, or filter it out entirely.

Since:

2.0.0

Method Summary

Modifier and Type	Method and Description
boolean	isFiltered(String id)
double	rescore(String id, double originalScore)

Method Detail

rescore

double rescore(String id,
               double originalScore)

Parameters:

id - ID of item to rescore

originalScore - original score from the recommender

Returns:

new score; return Double.NaN to exclude the item from recommendation

Since:

2.0.0

isFiltered

boolean isFiltered(String id)

Parameters:

id - of item to consider for filtering

Returns:

true iff the item should be removed from consideration

Since:

2.0.0