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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 %)