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Hubness-Aware Classification, Instance Selection and Feature Construction: Survey and Extensions to Time-Series

  • Nenad Tomašev
  • Krisztian Buza
  • Kristóf Marussy
  • Piroska B. Kis
Chapter
Part of the Studies in Computational Intelligence book series (SCI, volume 584)

Abstract

Time-series classification is the common denominator in many real-world pattern recognition tasks. In the last decade, the simple nearest neighbor classifier, in combination with dynamic time warping (DTW) as distance measure, has been shown to achieve surprisingly good overall results on time-series classification problems. On the other hand, the presence of hubs, i.e., instances that are similar to exceptionally large number of other instances, has been shown to be one of the crucial properties of time-series data sets. To achieve high performance, the presence of hubs should be taken into account for machine learning tasks related to time-series. In this chapter, we survey hubness-aware classification methods and instance selection, and we propose to use selected instances for feature construction. We provide detailed description of the algorithms using uniform terminology and notations. Many of the surveyed approaches were originally introduced for vector classification, and their application to time-series data is novel, therefore, we provide experimental results on large number of publicly available real-world time-series data sets.

Keywords

Time-series classification Hubs Instance selection Feature construction 

Notes

Acknowledgments

Research partially performed within the framework of the grant of the Hungarian Scientific Research Fund (grant No. OTKA 108947). The position of Krisztian Buza is funded by the Warsaw Center of Mathematics and Computer Science (WCMCS).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Nenad Tomašev
    • 1
  • Krisztian Buza
    • 2
  • Kristóf Marussy
    • 3
  • Piroska B. Kis
    • 4
  1. 1.Institute Jožef StefanArtificial Intelligence LaboratoryLjubljanaSlovenia
  2. 2.Faculty of Mathematics, Informatics and MechanicsUniversity of Warsaw (MIMUW)WarszawaPoland
  3. 3.Department of Computer Science and Information TheoryBudapest University of Technology and EconomicsBudapestHungary
  4. 4.Department of Mathematics and Computer ScienceCollege of DunaújvárosDunaújvárosHungary

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