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A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms, sometimes simply as lists of synonyms and antonyms.
Selection (biology), also called natural selection, selection in evolution Sex selection, in genetics; Mate selection, in mating; Sexual selection in humans, in human sexuality
A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. [2] For example, in the English language, the words begin, start, commence, and initiate are all synonyms of one another: they are synonymous. The standard test for synonymy is substitution: one form can be ...
ISO 25964, the international standard for information retrieval thesauri, defines a thesaurus as a “controlled and structured vocabulary in which concepts are represented by terms, organized so that relationships between concepts are made explicit, and preferred terms are accompanied by lead-in entries for synonyms or quasi-synonyms.”
Site selection for the Hanford nuclear production facility was important for different reasons. Nuclear material and nuclear weapon production required land suitable for large-scale manufacturing, but also remote and secure from natural disasters. The Army Corps of Engineers selected 586 acres in Southwest Washington in 1942. [4]
In the 1st Congress (1789–1791), the House appointed roughly six hundred select committees over the course of two years. [3] By the 3rd Congress (1793–95), Congress had three permanent standing committees, the House Committee on Elections, the House Committee on Claims, and the Joint Committee on Enrolled Bills, but more than three hundred fifty select committees. [4]
Selection bias is the bias introduced by the selection of individuals, groups, or data for analysis in such a way that proper randomization is not achieved, thereby failing to ensure that the sample obtained is representative of the population intended to be analyzed. [1]
In statistics, self-selection bias arises in any situation in which individuals select themselves into a group, causing a biased sample with nonprobability sampling.It is commonly used to describe situations where the characteristics of the people which cause them to select themselves in the group create abnormal or undesirable conditions in the group.