UniDic for Early Middle Japanese: a Dictionary for Morphological Analysis of Classical Japanese

Toshinobu Ogiso, Mamoru Komachi, Yasuharu Den, Yuji Matsumoto


Abstract
In order to construct an annotated diachronic corpus of Japanese, we propose to create a new dictionary for morphological analysis of Early Middle Japanese (Classical Japanese) based on UniDic, a dictionary for Contemporary Japanese. Differences between the Early Middle Japanese and Contemporary Japanese, which prevent a naïve adaptation of UniDic to Early Middle Japanese, are found at the levels of lexicon, morphology, grammar, orthography and pronunciation. In order to overcome these problems, we extended dictionary entries and created a training corpus of Early Middle Japanese to adapt UniDic for Contemporary Japanese to Early Middle Japanese. Experimental results show that the proposed UniDic-EMJ, a new dictionary for Early Middle Japanese, achieves as high accuracy (97%) as needed for the linguistic research on lexicon and grammar in Japanese classical text analysis.
Anthology ID:
L12-1540
Volume:
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)
Month:
May
Year:
2012
Address:
Istanbul, Turkey
Editors:
Nicoletta Calzolari, Khalid Choukri, Thierry Declerck, Mehmet Uğur Doğan, Bente Maegaard, Joseph Mariani, Asuncion Moreno, Jan Odijk, Stelios Piperidis
Venue:
LREC
SIG:
Publisher:
European Language Resources Association (ELRA)
Note:
Pages:
911–915
Language:
URL:
http://www.lrec-conf.org/proceedings/lrec2012/pdf/906_Paper.pdf
DOI:
Bibkey:
Cite (ACL):
Toshinobu Ogiso, Mamoru Komachi, Yasuharu Den, and Yuji Matsumoto. 2012. UniDic for Early Middle Japanese: a Dictionary for Morphological Analysis of Classical Japanese. In Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12), pages 911–915, Istanbul, Turkey. European Language Resources Association (ELRA).
Cite (Informal):
UniDic for Early Middle Japanese: a Dictionary for Morphological Analysis of Classical Japanese (Ogiso et al., LREC 2012)
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PDF:
http://www.lrec-conf.org/proceedings/lrec2012/pdf/906_Paper.pdf