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Calculating Autocorrelation Function for Word Occurrences in Texts and Its Modeling with Stochastic Processes

Research Project

Project/Area Number 25580093
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Linguistics
Research InstitutionShowa University

Principal Investigator

OGURA HIROSHI  昭和大学, 教養部, 准教授 (40214100)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords自己相関関数 / 拡張指数型関数 / 確率過程 / ポアソン過程 / 非定常ポアソン課程 / Cox過程 / 言語統計 / テキストマイニング / 非定常ポアソン過程 / 機能語 / 概念語 / 非済次ポアソン過程 / 語のバースト性
Outline of Final Research Achievements

In this study,we attempt to offer a new analyzing point of view for texts in which occurrences of words are considered as dynamical time series. Based on this interpretation of texts, we propose a method for calculating autocorrelation function (ACF) which represents the correlation between occurrences of a considered word. In our method, the basic time unit of the stochastic process of word occurrence is taken to be one sentence and this allows us a suitable definition of ACF. The examples of ACF obtained through our method for 'conceptual words'and those for 'nonconceptual words' are given and their characteristic behaviors are discussed. Here, the term 'conceptual word' means the word which is deeply related with the central concepts or themes of text, and the 'nonconceptual word' represents the word which is not related with themes of text. It was found that the ACFs for 'conceptual words' and those for 'nonconceptual words' show entirely different characteristic behaviors.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (9 results)

All 2014 2013 Other

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

  • [Journal Article] Classifying Documents with Poisson Mixtures2014

    • Author(s)
      Hiroshi Ogura, Hiromi Amano, Masato Kondo
    • Journal Title

      Transactions on Machine Learning and Artificial Intelligence

      Volume: 2 Pages: 48-76

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Effectiveness of piezoelectric surgery in reducing surgical complications in bilateral sagittal split osteotomy2014

    • Author(s)
      Shirota T, Kamatani T, Yamaguchi T, Ogura H, Maki K, Shintani S
    • Journal Title

      Br J Oral Maxillofac Surg

      Volume: 52 Issue: 3 Pages: 219-222

    • DOI

      10.1016/j.bjoms.2013.11.015

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 文書中の語の出現に関する自己相関関数と確率過程モデル2013

    • Author(s)
      小倉 浩,天野 弘美,近藤 雅人
    • Journal Title

      昭和大学 富士吉田教育部 紀要

      Volume: 8 Pages: 1-10

    • NAID

      40020024783

    • Related Report
      2013 Research-status Report
  • [Presentation] 初年次学部連携PBLチュートリアルおよび初年次体験実習の相互教育効果2014

    • Author(s)
      小倉浩,刑部慶太郎,片岡竜太,鈴木久義,馬谷原光織,今福輪太郎,榎田めぐみ,松木恵里,高木康,高宮有介,木内祐二,下司映一,田中一正,倉田知光
    • Organizer
      日本保健医療福祉連携教育学会
    • Place of Presentation
      学生総合プラザ(新潟県・新潟市)
    • Year and Date
      2014-09-20 – 2014-09-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] 初年次学部連携教育における学習過程の縦断的調査:ポートフォリオの質的分析から2014

    • Author(s)
      今福輪太郎,片岡竜太,小倉浩,刑部慶太郎,鈴木久義,榎田めぐみ,馬谷原光織,松木恵里,高木康,木内祐二,下司映一,倉田知光
    • Organizer
      日本保健医療福祉連携教育学会
    • Place of Presentation
      学生総合プラザ(新潟県・新潟市)
    • Year and Date
      2014-09-20 – 2014-09-21
    • Related Report
      2014 Annual Research Report
  • [Presentation] 初年次学部連携PBLチュートリアルおよび初年次体験実習の教育効果2014

    • Author(s)
      小倉浩,刑部慶太郎,片岡竜太,鈴木久義,馬谷原光織,今福輪太郎,榎田めぐみ,松木恵里,高木康,高宮有介,木内祐二,下司映一,田中一正,倉田知光
    • Organizer
      日本医学教育学会
    • Place of Presentation
      和歌山県立医科大学(和歌山県・和歌山市)
    • Year and Date
      2014-07-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] 医・歯・薬・保健医療学部による学部連携病棟実習の教育成果2014

    • Author(s)
      榎田めぐみ,片岡竜太,鈴木久義,今福輪太郎,小倉浩,刑部慶太郎,松木恵理,下司映一,木内祐二
    • Organizer
      日本医学教育学会
    • Place of Presentation
      和歌山県立医科大学(和歌山県・和歌山市)
    • Year and Date
      2014-07-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] 学部連携PBL・病棟実習によるチーム医療教育の効果アンケートの因子分析とポートフォリ オの質的解析結果2014

    • Author(s)
      片岡竜太,鈴木久義,今福輪太郎,榎田めぐみ,小倉浩,刑部慶太郎,松木恵里,木内祐二,下司映一
    • Organizer
      日本医学教育学会
    • Place of Presentation
      和歌山県立医科大学(和歌山県・和歌山市)
    • Year and Date
      2014-07-19
    • Related Report
      2014 Annual Research Report
  • [Remarks] 語の自己相関関数の計算手法に関する研究

    • URL

      https://sites.google.com/site/autocorrelation2014/

    • Related Report
      2014 Annual Research Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

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