F1¶
Harmonic mean of precision and recall.
Overview¶
| Field | Value |
|---|---|
| Type | Retrieval |
| Range | [0, 1] |
| Higher is better | Yes |
Formula¶
\[F1@k = 2 \cdot \frac{Precision@k \cdot Recall@k}{Precision@k + Recall@k}\]
Interpretation¶
| Score | Meaning |
|---|---|
| 1.0 | Perfect precision and recall |
| 0.8 | Good balance |
| 0.5 | Moderate performance |
| 0.0 | Complete failure |
When to Use¶
Use when you need a single metric that balances both precision and recall.
Configuration¶
_target_: autorag_research.evaluation.metrics.retrieval.F1Config