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Research on automatic grouping of multivariate time series based on the information granularity

Research Project

Project/Area Number 20700140
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Intelligent informatics
Research InstitutionShimane University

Principal Investigator

HIRANO Shoji  Shimane University, 医学部, 准教授 (60333506)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsデータマイニング / 知識工学 / 時系列 / 情報システム
Research Abstract

In this research we have developed a multiscale comparison method for multivariate time series. Our method firstly constructs multidimensional trajectories from the time series, and represent them using multiscale representation. Next, it splits the trajectories into data granules according to the positions of curvature maxima. Then it traces the hierarchical structure of data granules and performs granule-by-granule matching across the scales to find the best correspondences between the trajectories. Experimental results on a medical dataset showed that our method could generate groups of trajectories that exhibited similar temporal courses, and some of the clusters showed interesting characteristics about the distribution of fibrotic stages.

Report

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

    (3 results)

All 2010 2009

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] Multiscale Comparison of Three-dimensional Trajectories Based on the Curvature Maxima and Its Application to Medicine2010

    • Author(s)
      Shoji Hirano, Shusaku Tsumoto
    • Journal Title

      Lecture Notes in Computer Sciences 6007

      Pages: 128-137

    • Related Report
      2009 Annual Research Report 2009 Final Research Report
    • Peer Reviewed
  • [Presentation] Multiscale Comparison of Three-dimensional Trajectories: A Preliminary Step2009

    • Author(s)
      Shoji Hirano, Shusaku Tsumoto
    • Organizer
      12th Int'l Conf. on Rough Sets, Fuzzy Sets, Data Mining and Granular Computing 2009
    • Place of Presentation
      Delhi, India
    • Year and Date
      2009-12-16
    • Related Report
      2009 Final Research Report
  • [Presentation] Multiscale Comparison of Three-dimensional Trajectories : A Preliminary Step2009

    • Author(s)
      Shoji Hirano, Shusaku Tsumoto
    • Organizer
      12^<th> Int'1 Conf. on Rough Sets, Fuzzy Sets, Data Mining and Granular Computing 2009
    • Place of Presentation
      Delhi, India
    • Year and Date
      2009-12-16
    • Related Report
      2009 Annual Research Report

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

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