Similarity Search in Streaming Time Series Based on MP_C Dimensionality Reduction Method

  • Thanh-Son Nguyen
  • Tuan-Anh Duong
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7196)


The similarity search problem in streaming time series has become a hot research topic since such data arise in so many applications of various areas. In this problem, the fact that data streams are updated continuously as new data arrive in real time is a challenge due to expensive dimensionality reduction recomputation and index update costs. In this paper, adopting the same ideas of a delayed update policy and an incremental computation from IDC index (Incremental Discrete Fourier Transform(DFT) Computation – Index) we propose a new approach for similarity search in streaming time series by using MP_C as dimensionality reduction method with the support of Skyline index. Our experiments show that our proposed approach for similarity search in streaming time series is more efficient than the IDC-Index in terms of pruning power, normalized CPU cost and recomputation and update time.


Time Series Data Discrete Fourier Transform Similarity Search Index Structure Dimensionality Reduction Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Thanh-Son Nguyen
    • 1
  • Tuan-Anh Duong
    • 2
  1. 1.Faculty of Information TechnologyHCM City University of Technical EducationVietnam
  2. 2.Faculty of Computer Science and EngineeringHCM City University of TechnologyVietnam

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