Phonological Features for Morphological Inflection

Adam Wiemerslage, Miikka Silfverberg, Mans Hulden


Abstract
Modeling morphological inflection is an important task in Natural Language Processing. In contrast to earlier work that has largely used orthographic representations, we experiment with this task in a phonetic character space, representing inputs as either IPA segments or bundles of phonological distinctive features. We show that both of these inputs, somewhat counterintuitively, achieve similar accuracies on morphological inflection, slightly lower than orthographic models. We conclude that providing detailed phonological representations is largely redundant when compared to IPA segments, and that articulatory distinctions relevant for word inflection are already latently present in the distributional properties of many graphemic writing systems.
Anthology ID:
W18-5818
Volume:
Proceedings of the Fifteenth Workshop on Computational Research in Phonetics, Phonology, and Morphology
Month:
October
Year:
2018
Address:
Brussels, Belgium
Venues:
EMNLP | WS
SIG:
SIGMORPHON
Publisher:
Association for Computational Linguistics
Note:
Pages:
161–166
Language:
URL:
https://www.aclweb.org/anthology/W18-5818
DOI:
10.18653/v1/W18-5818
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PDF:
http://aclanthology.lst.uni-saarland.de/W18-5818.pdf