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Reduction of Parsing and Generation to Datalog Through Typed Lambda

Research Project

Project/Area Number 19500019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Fundamental theory of informatics
Research InstitutionNational Institute of Informatics

Principal Investigator

KANAZAWA Makoto  National Institute of Informatics, 情報学プリンシプル研究系, 准教授 (20261886)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords形式言語理論 / 型つきラムダ計算 / 計算言語学 / 構文解析 / 文生成 / Datalog / 多重文脈自由文法 / Earleyのアルゴリズム / マジックセット書き換え / LOGCFL
Research Abstract

与えられた文からその文法的構造である導出木を求め、さらに導出木にのっとって文の意味表現を求める問題を構文解析と言い、逆に意味表現から導出木を通して文を求める問題を文生成と言う。文、意味表現、導出木、文法規則などを型つきラムダ計算を使って表現することを通して、構文解析と文生成の両方の問題を、一種の関係データベースに対する問い合わせと見なすことができることがわかった。問い合わせは、Datalogという問い合わせ言語で表現できる。このことから、構文解析と文生成の両方の問題に対して、計算量理論上の位置づけと、統一的な手法による効率的アルゴリズムを得ることができた。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (6 results)

All 2008 2007

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (4 results)

  • [Journal Article] A prefix-correct Earley recognizer for multiple context-free grammars2008

    • Author(s)
      Makoto Kanazawa
    • Journal Title

      In Proceedings of the Ninth International Workshop on Tree Adjoining Grammars and Related Formalisms (University of Tubingenf)

      Pages: 49-56

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Parsing and generation as Datalog queries2007

    • Author(s)
      Makoto Kanazawa
    • Journal Title

      In Proceedings of the 45th Annual Meeting of the Association for Computational Linguistics (Association for Computational Linguistics)

      Pages: 176-183

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Presentation] A prefix-correct Earley recognizer for multiple context-free grammars2008

    • Author(s)
      Makoto Kanazawa
    • Organizer
      TAG+9, the Ninth International Workshop on Tree Adjoining Grammars and Related Formalisms
    • Place of Presentation
      Tubingen, Germany
    • Year and Date
      2008-06-07
    • Related Report
      2008 Final Research Report
  • [Presentation] A prefix-correct Earley recognizer for multiple context-free grammars2008

    • Author(s)
      金沢誠
    • Organizer
      The 9th International Workshop on Tree Adjoining Grammars and Related Formalisms
    • Place of Presentation
      University of Tubingenドイツ
    • Year and Date
      2008-06-07
    • Related Report
      2008 Annual Research Report
  • [Presentation] Parsing and generation as Datalog queries2007

    • Author(s)
      Makoto Kanazawa
    • Organizer
      The 45th Annual Meeting of the Association for Computational Linguistics
    • Place of Presentation
      Prague, Czech Republic
    • Year and Date
      2007-06-25
    • Related Report
      2008 Final Research Report
  • [Presentation] Parsing and generation as Datalog queries2007

    • Author(s)
      金沢 誠
    • Organizer
      45th Annual Meeting of the Association for Computational Linguistics
    • Place of Presentation
      TOP HOTEL プラハ(チェコ共和国)
    • Year and Date
      2007-06-25
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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