Japanese-Chinese Phrase Alignment Using Common Chinese Characters Information
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Japanese-Chinese Phrase Alignment Using Common Chinese Characters Information Chenhui Chu, Toshiaki Nakazawa and Sadao Kurohashi Graduate School of Informatics, Kyoto University. Kanji: 開発 (develop). Category 3 Kanji: 発. Category 2 Kanji: 開. 発→ 發 ・・・ Unihan database. 開→ 开 發 → 发

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Experiments

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Experiments

Japanese-Chinese Phrase Alignment Using Common Chinese Characters InformationChenhui Chu, Toshiaki Nakazawa and SadaoKurohashi

Graduate School of Informatics, Kyoto University

Kanji: 開発(develop)

Category 3 Kanji: 発

Category 2 Kanji:開

発→發

・・・

Unihan database

開→开

發→发

・・・

Category 2 Kanji:發

Introduction

Alignment Model

Simplified Chinese: 开发

  • Common Chinese characters information may be valuable in word/phrase alignment between Japanese and Chinese

  • Chinese characters are used both in Japanese (Kanji) and Chinese (Hanzi)

  • There exist common Chinese characters between Kanji and Hanzi

  • Parallel sentences contain equivalent meanings in each language, and we can assume common Chinese characters appear in the sentences

  • Bayesian subtree alignment model on dependency trees (Nakazawa et al. 2011)

(1)

(2)

(3)

(4)

(5)

  • Three categories of Kanji:

  • Category 1: identical to Simplified Chinese

  • Category 2: identical to Traditional Chinese but different from Simplified Chinese

  • Category 3: visual variations

  • Common Chinese characters information incorporation

  • Base distribution adjustment

(6)

(7)

  • Model modification

(8)

Common Chinese Characters Detection

Experiments

  • Aiming to detect common Chinese characters between Japanese and Simplified Chinese, we do a conversion of Japanese into Chinese

  • Freely available resources used for category 2 and 3 Kanji conversion:

  • Japanese-Chinese corpus we used

  • Coverage of common Chinese characters detection

  • Example of common Chinese characters detection

  • Alignment

  • We also do Kana-Kanji conversion for common Chinese characters detection


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