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Relevance is the connection between topics that makes one useful for dealing with the other. Relevance is studied in many different fields, including cognitive science, logic, and library and information science. Epistemology studies it in general, and different theories of knowledge have different implications for what is considered relevant.
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 ...
Relevance, in the common law of evidence, is the tendency of a given item of evidence to prove or disprove one of the legal elements of the case, ...
Relevance theory also attempts to explain figurative language such as hyperbole, metaphor and irony. Critics have stated that relevance, in the specialised sense used in this theory, is not defined well enough to be measured. Other criticisms include that the theory is too reductionist to account for the large variety of pragmatic phenomena.
In a classification task, the precision for a class is the number of true positives (i.e. the number of items correctly labelled as belonging to the positive class) divided by the total number of elements labelled as belonging to the positive class (i.e. the sum of true positives and false positives, which are items incorrectly labelled as belonging to the class).
Indexing and classification methods to assist with information retrieval have a long history dating back to the earliest libraries and collections however systematic evaluation of their effectiveness began in earnest in the 1950s with the rapid expansion in research production across military, government and education and the introduction of computerised catalogues.
Relevance is a measurement of the degree to which material (fact, detail or opinion) relates to the topic of an article. Degree of relevance should be taken into ...
Relevance is a measure of how pertinent, connected, or applicable something is. Relevance may also refer to: Relevance (information retrieval), a measure of a document's applicability to a given subject or search query; Relevance (law), regarding the admissibility of evidence in legal proceedings