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Developmental Studies on Metadata Cloud based on Efficient Join for Linked Data Search

Research Project

Project/Area Number 24680010
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypePartial Multi-year Fund
Research Field Media informatics/Database
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

MATONO Akiyoshi  独立行政法人産業技術総合研究所, 情報技術研究部門, 主任研究員 (10443227)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥26,780,000 (Direct Cost: ¥20,600,000、Indirect Cost: ¥6,180,000)
Fiscal Year 2014: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2013: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
Fiscal Year 2012: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
KeywordsLinked Data / データベース / 結合 / 並列処理・分散処理 / メタデータ / クラウド / RDF / 構造化文書 / Linked Open Data / MapReduce / 並列処理 / 並列・分散処理
Outline of Final Research Achievements

Linked Data is expected as resources where value information is buried. However, it's too hard to search answers from the entire Linked Data efficiently because large and high cost join operations are frequently occurred for such a query. To address such a problem, we proposed novel techniques. In particular, storing approach that can skip join operations based on structure of RDF documents, and join algorithm that can avoid unnecessary data reading for the low-selectivity join. We evaluated the performance of our approaches through a series of experiments using large data set.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • Research Products

    (6 results)

All 2015 2014 2013 2012

All Presentation (6 results) (of which Invited: 2 results)

  • [Presentation] Improvement of Join Algorithms for Low-Selectivity Joins on MapReduce2015

    • Author(s)
      Akiyoshi MATONO, Hirotaka OGAWA, Isao KOJIMA
    • Organizer
      The 26th edition of the Australasian Database Conference, ADC 2015
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2015-06-04 – 2015-06-07
    • Related Report
      2014 Annual Research Report
  • [Presentation] Implementation of the Fukushima radiation LOD framework2014

    • Author(s)
      Isao Kojima, Yoshio Tanaka, Akiyoshi Matono, Akihito Nakamura
    • Organizer
      Linking Geospatial Data Workshop
    • Place of Presentation
      London, UK
    • Related Report
      2013 Annual Research Report
  • [Presentation] OGC-based Database/Sensor Federation Framework for Fukushima Radiation Monitoring Data2014

    • Author(s)
      Isao Kojima, Yoshio Tanaka, Akiyoshi Matono, Akihito Nakamura
    • Organizer
      Geospatial World Forum 2014
    • Place of Presentation
      Geneva, Switherland
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] The Current and the Future of AIST GEO Grid Technologies- A Case Study of Fukushima Radiation Monitoring Application2014

    • Author(s)
      Isao Kojima, Ryosuke Nakamura, Hirotaka Ogawa, Yoshio Tanaka, Akiyoshi Matono
    • Organizer
      日本地球惑星科学連合 連合大会 2014年大会
    • Place of Presentation
      パシフィコ横浜
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Best-effort Linked Data Query Processing with time constraints using ADERIS-Hybrid2013

    • Author(s)
      Lynden Steven, Isao Kojima, Akiyoshi Matono and Akihito Nakamura
    • Organizer
      12th International Semantic Web Conference (ISWC 2013)
    • Place of Presentation
      Sydney, Australia
    • Related Report
      2013 Annual Research Report
  • [Presentation] Paragraph Tables : A Storage Scheme Based on RDF Document Structure2012

    • Author(s)
      的野晃整
    • Organizer
      23rd International Conference on Database and Expert Systems Applications (DEXA 2012)
    • Place of Presentation
      Vienna University of Technology (Vienna, Austria)
    • Year and Date
      2012-09-05
    • Related Report
      2012 Annual Research Report

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Published: 2012-04-24   Modified: 2019-07-29  

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