Marrying Universal Dependencies and Universal Morphology

Arya D. McCarthy, Miikka Silfverberg, Ryan Cotterell, Mans Hulden, David Yarowsky


Abstract
The Universal Dependencies (UD) and Universal Morphology (UniMorph) projects each present schemata for annotating the morphosyntactic details of language. Each project also provides corpora of annotated text in many languages—UD at the token level and UniMorph at the type level. As each corpus is built by different annotators, language-specific decisions hinder the goal of universal schemata. With compatibility of tags, each project’s annotations could be used to validate the other’s. Additionally, the availability of both type- and token-level resources would be a boon to tasks such as parsing and homograph disambiguation. To ease this interoperability, we present a deterministic mapping from Universal Dependencies v2 features into the UniMorph schema. We validate our approach by lookup in the UniMorph corpora and find a macro-average of 64.13% recall. We also note incompatibilities due to paucity of data on either side. Finally, we present a critical evaluation of the foundations, strengths, and weaknesses of the two annotation projects.
Anthology ID:
W18-6011
Volume:
Proceedings of the Second Workshop on Universal Dependencies (UDW 2018)
Month:
November
Year:
2018
Address:
Brussels, Belgium
Editors:
Marie-Catherine de Marneffe, Teresa Lynn, Sebastian Schuster
Venue:
UDW
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
91–101
Language:
URL:
https://aclanthology.org/W18-6011
DOI:
10.18653/v1/W18-6011
Bibkey:
Cite (ACL):
Arya D. McCarthy, Miikka Silfverberg, Ryan Cotterell, Mans Hulden, and David Yarowsky. 2018. Marrying Universal Dependencies and Universal Morphology. In Proceedings of the Second Workshop on Universal Dependencies (UDW 2018), pages 91–101, Brussels, Belgium. Association for Computational Linguistics.
Cite (Informal):
Marrying Universal Dependencies and Universal Morphology (McCarthy et al., UDW 2018)
Copy Citation:
PDF:
https://aclanthology.org/W18-6011.pdf
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