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      On the (non)utility of Juilland’sDto measure lexical dispersion in large corpora

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      International Journal of Corpus Linguistics
      John Benjamins Publishing Company

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          Abstract

          This paper explores the effectiveness of Juilland’s Das a measure of vocabulary dispersion in large corpora. Through a series of experiments using the BNC, we explored the influence of three variables: the number of corpus-parts used for the computation of D, the frequency of the target word, and the distributions of those words. The experiments demonstrate that the effective range for Dis greatly reduced when computations are based on a large number of corpus-parts: even words with highly skewed distributions have Dvalues indicating a relatively uniform distribution. We also briefly explore an alternative measure, Gries’ DP(Gries 2008), showing that it is a more reliable and effective measure of dispersion in a large corpus divided into many parts. In conclusion, we discuss the implications of these findings for quantitative methods applied to the creation of vocabulary lists as well as research questions in other areas of corpus linguistics.

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          A New Academic Word List

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            Measurement of Relative Variation: Sociological Examples

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              Is There a Core General Vocabulary? Introducing the New General Service List

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                Author and article information

                Journal
                International Journal of Corpus Linguistics
                IJCL
                John Benjamins Publishing Company
                1384-6655
                1569-9811
                November 28 2016
                November 28 2016
                : 21
                : 4
                : 439-464
                Article
                10.1075/ijcl.21.4.01bib
                93f2613f-65bb-4492-aedb-f231768b2f33
                © 2016

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