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Computational approaches to understanding historical changes of languages

Research Project

Project/Area Number 18K18104
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 61030:Intelligent informatics-related
Research InstitutionKyoto University

Principal Investigator

Murawaki Yugo  京都大学, 情報学研究科, 講師 (70616606)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsベイズ統計 / 方言群 / 水平伝播 / 変化を伴う由来 / 混合成員モデル / 言語類型論 / 含意的普遍性 / 自己ロジスティックモデル / 系統樹 / ベイズ統計学 / 言語系統樹 / 言語接触 / 言語系統論
Outline of Final Research Achievements

We have developed computer-intensive statistical methods that, by comparing a group of languages, uncover how they have changed over time. Our initial target was languages around the world, with the time scale of hundreds and thousands of years and with structural features as comparanda. Structural features include the basic word order of subject, object and verb (SOV) and the presence and absence of tone. We later found that, with small modifications, the same model can be applied to a group of dialects, with lexical features as comparanda.

Academic Significance and Societal Importance of the Research Achievements

言語の歴史的変化を推定するには祖先を共有する他の言語との比較が強力な手段であるが、日本語の場合は近縁関係が明らかな他の言語が存在せず、この手法が適用できなかった。本研究では構造的特徴がどのように変化するかを確率的にモデル化した。この手法は、日本語がどのように変化してきたのか、また今後どのように変化していくのかを推定するのに役立つ。さらに、ほぼ同じ手法が方言群に適用できることを発見した。日本語の歴史を考える上では、上記の理由から、日本語内部の変異を明らかにすることが残された有効な手段の1つである。今後はこの点を追究していきたい。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018 Other

All Journal Article (5 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (4 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Latent Geographical Factors for Analyzing the Evolution of Dialects in Contact2020

    • Author(s)
      Yugo Murawaki
    • Journal Title

      Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing

      Volume: - Pages: 959-976

    • NAID

      130007998399

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bayesian Learning of Latent Representations of Language Structures2020

    • Author(s)
      Yugo Murawaki
    • Journal Title

      Computational Linguistics

      Volume: 45(2) Issue: 2 Pages: 228-228

    • DOI

      10.1162/coli_a_00346

    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 基本語順の歴史的変化の数理モデル2020

    • Author(s)
      村脇 有吾
    • Journal Title

      数学セミナー

      Volume: 2020年3月 Pages: 36-40

    • Related Report
      2019 Research-status Report
  • [Journal Article] Analyzing Correlated Evolution of Multiple Features Using Latent Representations2018

    • Author(s)
      Yugo Murawaki
    • Journal Title

      Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing

      Volume: - Pages: 4382-4382

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 言語系統論への計算的アプローチの可能性2018

    • Author(s)
      村脇 有吾
    • Journal Title

      歴史言語学

      Volume: 7 Pages: 77-91

    • Related Report
      2018 Research-status Report
  • [Presentation] Relaxing the Tree Constraint2020

    • Author(s)
      Yugo Murawaki
    • Organizer
      Fijian Languages Symposium
    • Related Report
      2019 Research-status Report
  • [Presentation] 方言群の時空間解析にむけて: フィジー語を例に2019

    • Author(s)
      村脇 有吾
    • Organizer
      新学術領域・ヤポネシアゲノム・言語班2018年度第2回研究集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 潜在表現を用いた言語変化の通時的分析2019

    • Author(s)
      村脇 有吾
    • Organizer
      京都大学第13回 ICT イノベーション
    • Related Report
      2018 Research-status Report
  • [Presentation] Toward Spatio-Temporal Analysis of Dialects of Fijian2019

    • Author(s)
      Yugo Murawaki
    • Organizer
      Fijian Languages, Maps and Beyond: An Interim Report of the Fijian Language GIS (Geographic Information System) Project
    • Related Report
      2018 Research-status Report
  • [Book] 方言群の時空間動態の統計的モデル化に向けての予備的考察 in 木部暢子, 林由華, 衣畑智秀編『フィールドと文献から見る日琉諸語の系統と歴史』2021

    • Author(s)
      村脇 有吾
    • Publisher
      開拓社
    • Related Report
      2020 Annual Research Report
  • [Remarks] Latent Geographical Factors for ...

    • URL

      https://github.com/murawaki/dialect-latgeo

    • Related Report
      2020 Annual Research Report
  • [Remarks] lattyp

    • URL

      https://github.com/murawaki/lattyp/

    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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