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Web Application Technology in Retrieval System

Research Project

Project/Area Number 20500086
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Media informatics/Database
Research InstitutionThe University of Electro-Communications

Principal Investigator

ONAI Rikio  The University of Electro-Communications, 大学院・情報理工学研究科, 教授 (70323871)

Co-Investigator(Kenkyū-buntansha) HAYASHI Takahiro  新潟大学, 自然科学系, 准教授 (60342490)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords情報検索 / WEB応用 / 情報検
Research Abstract

Results of the study, the entire system was composed from a document collection・registration units (newly acquired crawler, updated crawler, and a document registration module) and a search unit (back-end search, indexer, and scoring module) .We consider adopting open source software in the two crawlers, Heritrix crawler was adopted as newly acquired crawler, and the updated crawler and the document registration module were implemented. Load reduction, scalability, and fault tolerance examined, Hadoop and HDFS were introduced. Aims to speed up the indexing with MapReduce, compared to our conventional method, improved to about 15 times faster (size of the index was the same). The validity of this method was gotten as a result.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (2 results)

All 2009

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

  • [Journal Article] 規模の拡張に対応した検索エンジンの開発2009

    • Author(s)
      早坂良太, 林貴宏, 尾内理紀夫
    • Journal Title

      日本ソフトウェア科学会、コンピュータソフトウェア Vol.26, No.4

      Pages: 138-156

    • NAID

      130004549151

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 規模の拡張に対応した検索エンジンの開発2009

    • Author(s)
      早坂良太, 林貴宏, 尾内理紀夫
    • Journal Title

      日本ソフトウェア科学会「コンピュータソフトウェア」 Vol.26, No.4

      Pages: 138-156

    • NAID

      130004549151

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2008-04-01   Modified: 2016-04-21  

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