Gabrielatos, C. (2013). Keyword Analysis. Dubrovnik Fall School in Linguistic Methods. Centre for Advanced Academic Studies. Dubrovnik, Croatia, 20–26 October 2013.

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Gabrielatos, C. (2013). Keyword Analysis. Dubrovnik Fall School in Linguistic Methods. Centre for Advanced Academic Studies. Dubrovnik, Croatia, 20–26 October 2013.

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  Corpus Linguistics 2 Keyword Analysis  Dubrovnik Fall School in Linguistic Methods 20  – 26 October 2013 Costas Gabrielatos Edge Hill University gabrielc@edgehill.ac.uk  Based on Gabrielatos & Marchi (2011, 2012)  Keyword analysis: The basics • Keyword analysis   – The comparison of word frequencies between two corpora (through word frequency lists). • Study corpus  – The corpus we want to investigate. • Reference corpus:  – The corpus we compare the study corpus to. • Keyword   – A word that is significantly more frequent in the study corpus than in the reference corpus. • Utility: Reveals lexical differences   topic  Background (1) • Keyword analysis is one of the most widely used techniques in corpus studies. • The vast majority of studies do not examine all keywords, but the top X (usually the top 100).  The ranking criterion becomes very important.  The criterion is termed keyness.  Background (2) Manual examination of frequency differences of particular sets of words has shown large discrepancies between ranking by normalised frequency difference (%DIFF) and ranking by statistical significance (LL) (Gabrielatos 2007a,b; Gabrielatos & McEnery, 2005)
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