Extraction automatique de collocations : Peut-on étendre le test exact de Fisher à des séquences de plus de 2 mots?

Bestgen, Yves
(2014) JADT 2014 — Location: Inalco (Paris) (3.June.2014)

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In textual statistics, as in natural language processing and corpus linguistics, the study of sequences of contiguous words that occur together more often than by chance is a major topic of interest. In the case of pairs of words, Fisher’s exact test is becoming the reference index to identify them. The objective of this study is to propose a generalization of this index to the analysis of trigrams and longer sequences using a Monte-Carlo procedure. The results of an initial evaluation suggest that this approach could complement other indices, but also that it has a major drawback: a large number of trigrams get a maximum score of collocation.
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Bestgen, Y. (2014). Extraction automatique de collocations : Peut-on étendre le test exact de Fisher à des séquences de plus de 2 mots? Actes de JADT 2014, p. 79-90. https://hdl.handle.net/2078.5/224573