Recall

Measures how many relevant documents were retrieved.

Overview

Field	Value
Type	Retrieval
Range	[0, 1]
Higher is better	Yes

Formula

\[Recall@k = \frac{|Retrieved@k \cap Relevant|}{|Relevant|}\]

Interpretation

Score	Meaning
1.0	All relevant docs retrieved
0.8	80% of relevant docs found
0.5	Half of relevant docs found
0.0	No relevant docs retrieved

When to Use

Use when finding all relevant documents is critical, such as:

• Legal document search
• Medical information retrieval
• Comprehensive research

Configuration

_target_: autorag_research.evaluation.metrics.retrieval.RecallConfig