Synonyms
False negative rate; Positive predictive value; Sensitivity
Definition
Recall measures the ability of a search engine or retrieval system to locate relevant material in its index. Precision measures its ability to not rank nonrelevant material. With everything above rank cut-off n considered “retrieved” and everything below considered “not retrieved,” precision and recall can be stated mathematically as:
Key Points
Precision and recall are the traditional metrics for retrieval system performance evaluation,...
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van Rijsbergen CJ. Information retrieval. London: Butterworths; 1979.
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Carterette, B. (2018). Precision and Recall. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_5050
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DOI: https://doi.org/10.1007/978-1-4614-8265-9_5050
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