Introducing Morphology in Universal Dependencies Japanese

Chihiro Taguchi, David Chiang


Abstract
This paper discusses the need for including morphological features in Japanese Universal Dependencies (UD). In the current version (v2.11) of the Japanese UD treebanks, sentences are tokenized at the morpheme level, and almost no morphological feature annotation is used. However, Japanese is not an isolating language that lacks morphological inflection but is an agglutinative language. Given this situation, we introduce a tentative scheme for retokenization and morphological feature annotation for Japanese UD. Then, we measure and compare the morphological complexity of Japanese with other languages to demonstrate that the proposed tokenizations show similarities to synthetic languages reflecting the linguistic typology.
Anthology ID:
2023.udw-1.8
Volume:
Proceedings of the Sixth Workshop on Universal Dependencies (UDW, GURT/SyntaxFest 2023)
Month:
March
Year:
2023
Address:
Washington, D.C.
Editors:
Loïc Grobol, Francis Tyers
Venues:
UDW | SyntaxFest
SIG:
SIGPARSE
Publisher:
Association for Computational Linguistics
Note:
Pages:
65–72
Language:
URL:
https://aclanthology.org/2023.udw-1.8
DOI:
Bibkey:
Cite (ACL):
Chihiro Taguchi and David Chiang. 2023. Introducing Morphology in Universal Dependencies Japanese. In Proceedings of the Sixth Workshop on Universal Dependencies (UDW, GURT/SyntaxFest 2023), pages 65–72, Washington, D.C.. Association for Computational Linguistics.
Cite (Informal):
Introducing Morphology in Universal Dependencies Japanese (Taguchi & Chiang, UDW-SyntaxFest 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.udw-1.8.pdf