Jamo Pair Encoding: Subcharacter Representation-based Extreme Korean Vocabulary Compression for Efficient Subword Tokenization

Sangwhan Moon, Naoaki Okazaki


Abstract
In the context of multilingual language model pre-training, vocabulary size for languages with a broad set of potential characters is an unsolved problem. We propose two algorithms applicable in any unsupervised multilingual pre-training task, increasing the elasticity of budget required for building the vocabulary in Byte-Pair Encoding inspired tokenizers, significantly reducing the cost of supporting Korean in a multilingual model.
Anthology ID:
2020.lrec-1.429
Volume:
Proceedings of the Twelfth Language Resources and Evaluation Conference
Month:
May
Year:
2020
Address:
Marseille, France
Editors:
Nicoletta Calzolari, Frédéric Béchet, Philippe Blache, Khalid Choukri, Christopher Cieri, Thierry Declerck, Sara Goggi, Hitoshi Isahara, Bente Maegaard, Joseph Mariani, Hélène Mazo, Asuncion Moreno, Jan Odijk, Stelios Piperidis
Venue:
LREC
SIG:
Publisher:
European Language Resources Association
Note:
Pages:
3490–3497
Language:
English
URL:
https://aclanthology.org/2020.lrec-1.429
DOI:
Bibkey:
Cite (ACL):
Sangwhan Moon and Naoaki Okazaki. 2020. Jamo Pair Encoding: Subcharacter Representation-based Extreme Korean Vocabulary Compression for Efficient Subword Tokenization. In Proceedings of the Twelfth Language Resources and Evaluation Conference, pages 3490–3497, Marseille, France. European Language Resources Association.
Cite (Informal):
Jamo Pair Encoding: Subcharacter Representation-based Extreme Korean Vocabulary Compression for Efficient Subword Tokenization (Moon & Okazaki, LREC 2020)
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PDF:
https://aclanthology.org/2020.lrec-1.429.pdf