The Agreement Measure γcat a Complement to γ Focused on Categorization of a Continuum

Yann Mathet


Abstract
Agreement on unitizing, where several annotators freely put units of various sizes and categories on a continuum, is difficult to assess because of the simultaneaous discrepancies in positioning and categorizing. The recent agreement measure γ offers an overall solution that simultaneously takes into account positions and categories. In this article, I propose the additional coefficient γcat, which complements γ by assessing the agreement on categorization of a continuum, putting aside positional discrepancies. When applied to pure categorization (with predefined units), γcat behaves the same way as the famous dedicated Krippendorff’s α, even with missing values, which proves its consistency. A variation of γcat is also proposed that provides an in-depth assessment of categorizing for each individual category. The entire family of γ coefficients is implemented in free software.
Anthology ID:
J17-3006
Volume:
Computational Linguistics, Volume 43, Issue 3 - September 2017
Month:
September
Year:
2017
Address:
Cambridge, MA
Venue:
CL
SIG:
Publisher:
MIT Press
Note:
Pages:
661–681
Language:
URL:
https://aclanthology.org/J17-3006
DOI:
10.1162/COLI_a_00296
Bibkey:
Cite (ACL):
Yann Mathet. 2017. The Agreement Measure γcat a Complement to γ Focused on Categorization of a Continuum. Computational Linguistics, 43(3):661–681.
Cite (Informal):
The Agreement Measure γcat a Complement to γ Focused on Categorization of a Continuum (Mathet, CL 2017)
Copy Citation:
PDF:
https://preview.aclanthology.org/ingestion-script-update/J17-3006.pdf