Recall

Recall

$\text{Recall}=\frac{|\text{relevant}\cap \text{retrieved}|}{|\text{relevant}|}$

Fraction of relevant documents that are retrieved.

High recall = few false negatives. Trade-off with Precision — improving one typically hurts the other.

Appears In

• IR-L04 - Evaluation
• RS-L01 - Course Overview & Introduction
• RS-L02 - Evaluation Beyond Accuracy
• RS-L04 - Generative Recommendation