each relevant document is retrieved ( Baeza-Yates and Ribeiro-Neto 1999 ) .
modern information retrieval
Ricardo Baeza-Yates Berthier Ribeiro-Neto
â¢ Mean Average Precision ( MAP ) is the average of precision values after each relevant document is retrieved ( Baeza-Yates and Ribeiro-Neto 1999 ) . It is the most widely accepted single-value metric in information retrieval , and is seen to balance the need for both precision and recall .
each relevant document is retrieved ( @@CITATION ) .