Clustering Streaming Time Series Using CBC

  • Authors:
  • Weimin Li;Liangxu Liu;Jiajin Le

  • Affiliations:
  • College of Computer Science and Technology of Donghua University, 1882 West Yan'an Road, Shanghai, 200051, China;College of Computer Science and Technology of Donghua University, 1882 West Yan'an Road, Shanghai, 200051, China;College of Computer Science and Technology of Donghua University, 1882 West Yan'an Road, Shanghai, 200051, China

  • Venue:
  • ICCS '07 Proceedings of the 7th international conference on Computational Science, Part III: ICCS 2007
  • Year:
  • 2007

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Abstract

Clustering streaming time series is a difficult problem. Most traditional algorithms are too inefficient for large amounts of data and outliers in them. In this paper, we propose a new clustering method, which clusters Bi-clipped (CBC) stream data. It contains three phrases, namely, dimensionality reduction through piecewise aggregate approximation (PAA), Bi-clipped process that clipped the real valued series through bisecting the value field, and clustering. Through related experiments, we find that CBC gains higher quality solutions in less time compared with M-clipped method that clipped the real value series through the mean of them, and unclipped methods. This situation is especially distinct when streaming time series contain outliers.