reference corpus

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A reference corpus is used in keyword extraction and term extraction. A reference corpus is a corpus to which the focus corpus is compared. When using the Keywords & Terms tool, a reference corpus is preselected but the user can use a different corpus as a reference corpora.  The reference corpus can but does not have to be the same for keywords and for terms. A reference corpus can also be used with n-grams to identify n-grams typical of the focus corpus in comparison with the reference corpus. In the word sketch, a reference corpus is used to identify key collocations when using the AS A LIST option in the word sketch.   see also term keyword term extraction (definition) term extraction (quick start guide)