n. See also: irrelevant relevant

<information science> A measure of how closely a given object (file, web page, database record, etc.) matches a user's search for information. The relevance algorithms used in most large web {search engines} today are based on fairly simple word-occurence measurement: if the word "daffodil" occurs on a given page, then that page is considered relevant to a query on the word "daffodil"; and its relevance is quantised as a factor of the number of times the word occurs in the page, on whether "daffodil" occurs in title of the page or in its META keywords, in the first N words of the page, in a heading, and so on; and similarly for words that a stemmer says are based on "daffodil". More elaborate (and resource-expensive) relevance algorithms may involve thesaurus (or synonym ring) lookup; e.g. it might rank a document about narcissuses (but which may not mention the word "daffodil" anywhere) as relevant to a query on "daffodil", since narcissuses and daffodils are basically the same thing. Ditto for queries on "jail" and "gaol", etc. More elaborate forms of thesaurus lookup may involve multilingual thesauri (e.g. knowing that documents in Japanese which mention the Japanese word for "narcissus" are relevant to your search on "narcissus"), or may involve thesauri (often auto-generated) based not on equivalence of meaning, but on word-proximity, such that "bulb" or "bloom" may be in the thesaurus entry for "daffodil". Word spamming essentially attempts to falsely increase a web page's relevance to certain common searches. See also subject index. (1997-04-09)

adj. not important, pertinent, or germane to the matter at hand or to any issue before the court. This is the most common objection raised by attorneys to questions asked or to answers given during testimony in a trial. The objection is made as soon as an alert attorney believes the opposition is going into matters which are not concerned with the facts or outside the issues of the lawsuit. It is often stated in the trio: "Irrelevant, immaterial and incompetent" to cover the bases. The judge must then rule on the relevancy of the question. If the question has been answered before the lawyer could say "objection," the judge may order that answer stricken from the record. Blotting it from a jury's memory or conscience, though, is impossible. See also: evidence immaterial incompetent objection

(irrelevances)

Relevance is the concept of one topic being connected to another topic in a way that makes it useful to consider the second topic when considering the first. The concept of relevance is studied in many different fields, including cognitive sciences, logic, and library and information science.