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Relevance (information retrieval)
In information science and information retrieval, relevance denote how well a retrieved document or set of documents meets the information need of the user. Relevance may include concerns such as timeliness, authority or novelty of the result.
== History ==
The concern with the problem of finding relevant information dates back at least to the first publication of scientific journals in the 17th century.
The formal study of relevance began in the 20th Century with the study of what would later be called bibliometrics. In the 1930s and 1940s, S. C. Bradford used the term "relevant" to characterize articles relevant to a subject (cf., Bradford's law). In the 1950s, the first information retrieval systems emerged, and researchers noted the retrieval of irrelevant articles as a significant concern. In 1958, B. C. Vickery made the concept of relevance explicit in an address at the International Conference on Scientific Information.〔Mizzaro, S. (1997). Relevance: The Whole History. Journal of the American Society for Information Science. 48, 810‐832.〕
Since 1958, information scientists have explored and debated definitions of relevance. A particular focus of the debate was the distinction between "relevance to a subject" or "topical relevance" and "user relevance".
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