Neural Multi-Source Morphological Reinflection

Katharina Kann, Ryan Cotterell, Hinrich Schütze


Abstract
We explore the task of multi-source morphological reinflection, which generalizes the standard, single-source version. The input consists of (i) a target tag and (ii) multiple pairs of source form and source tag for a lemma. The motivation is that it is beneficial to have access to more than one source form since different source forms can provide complementary information, e.g., different stems. We further present a novel extension to the encoder-decoder recurrent neural architecture, consisting of multiple encoders, to better solve the task. We show that our new architecture outperforms single-source reinflection models and publish our dataset for multi-source morphological reinflection to facilitate future research.
Anthology ID:
E17-1049
Volume:
Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 1, Long Papers
Month:
April
Year:
2017
Address:
Valencia, Spain
Editors:
Mirella Lapata, Phil Blunsom, Alexander Koller
Venue:
EACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
514–524
Language:
URL:
https://aclanthology.org/E17-1049
DOI:
Bibkey:
Cite (ACL):
Katharina Kann, Ryan Cotterell, and Hinrich Schütze. 2017. Neural Multi-Source Morphological Reinflection. In Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 1, Long Papers, pages 514–524, Valencia, Spain. Association for Computational Linguistics.
Cite (Informal):
Neural Multi-Source Morphological Reinflection (Kann et al., EACL 2017)
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PDF:
https://aclanthology.org/E17-1049.pdf