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6 - Comparing Generalised Linear Mixed-Effects Models, Generalised Linear Mixed-Effects Model Trees and Random Forests

Filled and Unfilled Pauses in Varieties of English

from Part III - Perspectives on Multifactorial Methods

Published online by Cambridge University Press:  06 May 2022

Ole Schützler
Affiliation:
Universität Leipzig
Julia Schlüter
Affiliation:
Universität Bamberg
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Summary

In a comparison of generalised linear mixed-effects models, generalised linear mixed-effects model trees and random forests, the author applies the three methodologies to a binary variable from the field of interactional pragmatics, the choice between filled and unfilled pauses across varieties of English represented by components of the International Corpus of English. Based on a large number of examples annotated for linguistic and extralinguistic factors the steps and decisions involved in the analyses are demonstrated. Though different in essence, the three resulting models share central trends. A more fine-grained evaluation of results and interpretations shows, however, that the three approaches differ in their systematicity of handling multiple observations from the same source, in that only the mixed-effects models explicitly account for and systematically partial out the relatedness of data points contributed by the same speaker. As to the way the approaches balance researcher involvement and control of the outcome, the approaches also differ substantially. A modelling choice can thus lead to notably different perspectives on an identical set of data and variables.

Type
Chapter
Information
Data and Methods in Corpus Linguistics
Comparative Approaches
, pp. 163 - 193
Publisher: Cambridge University Press
Print publication year: 2022

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References

Further Reading

Levshina, Natalia. 2015. How to Do Linguistics with R: Data Exploration and Statistical Analysis. Amsterdam: John Benjamins. Chapter 14.CrossRefGoogle Scholar
Gries, Stefan Th. 2020. On Classification Trees and Random Forests in Corpus Linguistics: Some Words of Caution and Suggestions for Improvement. Corpus Linguistics and Linguistic Theory 16(3). 617–47.Google Scholar
Field, Andy, Miles, Jeremy and Field, Zoe. 2012. Discovering Statistics Using R. London: Sage. Chapter 19.Google Scholar

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