Precision / Recall Gate

Given a set of items (SOURCE) and a set of relevant items (RELEVANT), lets SOURCE through only if the computed precision or recall is >= Threshold. Otherwise, the empty set is returned.

• SOURCE [OBJ]: a list of objects
• RELEVANT [OBJ]: a list of objects

• PRECISION [OBJ]: SOURCE if precision is >= Threshold, an empty set otherwise
• RECALL [OBJ]: SOURCE if recall is >= Threshold, an empty set otherwise

• Threshold the minimum value requested for precision or recall to let SOURCE through.

Output scores can be aggregated and/or normalized.