日英機械翻訳システムTWINTRANの言語知識と翻訳品質の評価  [in Japanese] Linguistic Expertise in the Japanese-to-English MT System TWINTRAN and Evaluation of Translation Results  [in Japanese]

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Abstract

本稿では, 日英機械翻訳システムTWINTRANの言語知識 (辞書と規則) と翻訳品質の評価結果について述べる. TWINTRANは次のような設計方針に基づくシステムである. 1) 翻訳対象と翻訳方向を日本語テキストから英語テキストへの翻訳に固定し, 日本語の解析知識の記述を, 日本語文法だけでなく英語文法も考慮に入れて行なう. 2) 解釈の曖昧性の解消は, 各規則に与えた優先度に基づいて解釈の候補に優劣を付け, 候補の中から最も優先度の高い解釈を選択することによって行なう. 3) 動詞の主語や目的語など日本語では任意的だが英語では義務的である情報を得るために照応解析を行なう.<BR>NTT機械翻訳機能試験文集を対象として行なったウィンドウテストでは, 我々の評価基準で, 試験文集の73.1%の文が合格となり, 試験文集全体の平均点も合格点を上回る結果が得られた

In this treatise we set out to describe the linguistic expertise (dictionary and rules) embodied in the Japanese-to-English MT system TWINTRAN, and the evaluation of the translation results. TWINTRAN is based on the following design policy: 1) The translation equivalents and the direction of the translation process are strictly monodirectional, from Japanese to English. The analysis of the Japanese input is not confined to Japanese grammar but also anticipates at every step the possible English translation. 2) Disambiguation is based on prioritisation of each rule, where each rule contains a priority value and the highest aggregate priority candidate is selected. 3) Verb complements are screened for acceptability not only in the input Japanese but also in the output English, and anaphora resolution is used for arriving at the optimum result.<BR>In the window test we have carried out, based on NTT's functional MT test set, applying our evaluation procedure, 73.1% of the corpus was acceptable and the corpus average was above the point of acceptability.

Journal

  • Journal of Natural Language Processing

    Journal of Natural Language Processing 7(4), 143-162, 2000-10-10

    The Association for Natural Language Processing

References:  18

Cited by:  3

Codes

  • NII Article ID (NAID)
    10008829973
  • NII NACSIS-CAT ID (NCID)
    AN10472659
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    13407619
  • NDL Article ID
    5544267
  • NDL Source Classification
    ZU8(書誌・図書館・一般年鑑--図書館・ドキュメンテーション・文書館)
  • NDL Call No.
    Z21-B168
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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