Discover Relaxed Periodicity in Temporal Databases

  • Authors:
  • Changjie Tang;Zhonghua Yu;Tianqing Zhang

  • Affiliations:
  • -;-;-

  • Venue:
  • DASFAA '99 Proceedings of the Sixth International Conference on Database Systems for Advanced Applications
  • Year:
  • 1999

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Abstract

The Relaxed-Periodicity Pattern describes loose-cyclic behavior of objects while allowing uneven stretch or shrink on time axis, limited noises, and inflation /deflation of attribute values. To discover Relaxed-Periodicity from Temporal Databases, we propose the concepts of Attribute Trend, Trend Inertia, Peak-Valley Pattern, Inertia Algorithm with Anti-noise ability, as well as the Peak-Valley Algorithm, and show that the implementation prototype is efficient.