Vol. 7 (2020)
ARTICLES

Topic unit detection in spontaneous speech: Measuring reliability using the Kappa statistic

Frederico Amorim Cavalcante
UFMG
Giulia Bossaglia
UFMG
Maryualê Mittmann
UNIVALI
Bruno Rocha
UFMG
Published September 28, 2020

Keywords:

interrater agreement, information structure, topic, spontaneous speech, prosody
How to Cite
Cavalcante, F. A., Raso, T., Bossaglia, G., Mittmann, M., & Rocha, B. (2020). Topic unit detection in spontaneous speech: Measuring reliability using the Kappa statistic. CHIMERA: Romance Corpora and Linguistic Studies, 7, 69-106. Retrieved from https://revistas.uam.es/chimera/article/view/12141

Abstract

This paper deals with an inter-annotator agreement test involving the identification of the information unit of Topic as defined within the framework of the Language into Act Theory (L-AcT). Fleiss’s kappa statistic was used to measure the agreement among the four annotators who took part in the test. The data used was sampled from C-ORAL-BRASIL II, a spontaneous speech corpus of Brazilian Portuguese. The paper begins by outlining of the theoretical underpinnings of L-AcT, dedicating special attention to aspects directly related to the notion of Topic. Section 2 presents the pilot test and discusses methodological and theoretical issues that were relevant for the design of the protocol that was eventually used in the actual test. Sections 3 and 4 deal with the test, its protocol and results (the kappa coefficient for the general agreement was 0.79, which by usual standards represents a substantial agreement). Section 5 first provides a brief review of a few studies conducted according to other frameworks which have dealt with inter-rater agreement on the annotation of information structure categories. Finally, the errors observed in the test are analyzed qualitatively.

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