Table 4 Query expansion result evaluation
From: An approach to semantic query expansion system based on Hepatitis ontology
Metric | Method | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
Precision@40 | Non expansion | 0.42 | 0.4 | 0.45 | 0.5 | 0.43 |
Query expansion | 0.44 (↑5 %) | 0.45 (↑13 %) | 0.48 (↑7 %) | 0.53 (↑6 %) | 0.48 (↑12 %) | |
AP@40 | Non expansion | 0.25 | 0.18 | 0.21 | 0.24 | 0.2 |
Query expansion | 0.26 (↑4 %) | 0.22 (↑22 %) | 0.23 (↑10 %) | 0.25 (↑4 %) | 0.24 (↑20 %) |