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Collocation extraction is the task of extracting collocations automatically from a corpus using a computer. Within the area of corpus linguistics, collocation is defined as a sequence of words or terms which co-occur more often than would be expected by chance. 'Crystal clear', 'middle management', 'nuclear family', and 'cosmetic surgery' are examples of collocated pairs of words. Some words are often found together because they make up a compound noun, for example 'riding boots' or 'motor cyclist'. The traditional method of performing collocation extraction is to find a formula based on the statistical quantities of those words to calculate a score associated to every word pairs. Proposed formulas are mutual information, t-test, z test, chi-squared test and likelihood ratio. == See also == *Collocational restriction *Collostructional analysis *Compound noun, adjective and verb *Phrasal verb *Siamese twins (English language) *Terminology extraction *n-gram analysis 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Collocation extraction」の詳細全文を読む スポンサード リンク
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