计算机应用 ›› 2011, Vol. 31 ›› Issue (12): 3285-3287.

• 数据库技术 • 上一篇    下一篇

不同粒度时间序列相似性度量

邵校莎莎1,郝文宁2,靳大卫2,王莹3   

  1. 1. 解放军理工大学 工程兵工程学院,南京 210007
    2. 解放军理工大学 工程兵工程学院, 南京 210007
    3. 武警海南省总队 一支队,海口 570000
  • 收稿日期:2011-06-29 修回日期:2011-08-05 发布日期:2011-12-12 出版日期:2011-12-01
  • 通讯作者: 邵校莎莎

Similarity measurement of time-series data with different granularities

SHAO Xiao-shasha1,HAO Wen-ning1,JIN Da-wei1,WANG Ying2   

  1. 1. Engineering Institute of Corps of Engineers, PLA University of Science and Technology, Nanjing Jiangsu 210007,China
    2. The first Detachment of CAPF Hainan Province Corps, Haikou Hainan 570000,China
  • Received:2011-06-29 Revised:2011-08-05 Online:2011-12-12 Published:2011-12-01
  • Contact: SHAO Xiao-shasha

摘要: 现有的时间序列的相似性度量大多基于欧氏距离,并不适用于不同粒度时间序列的相似性匹配,无法直接对其相似性进行有效的度量,为此,提出一种基于对应差值比样本的相似性度量,用于不同粒度时间序列的相似性匹配。首先对不同时间粒度的时序数据进行阐述,并定义了对应差值比样本与相似度计算方法;接着提出基于它们的相似性匹配算法;最后实验证明,该度量能够有效地度量不同粒度时间序列数据的相似性。

关键词: 时间序列, 相似性度量, 时间粒度

Abstract: Most of the existing similarity measurement, based on Euclidean distance, cannot be applied directly and effectively to similarity matching of the timeseries with different granularities. This paper proposed a new similarity measure based on the sample of the corresponding D-value. It firstly expounded the definition of the time-series with different granularities, and defined the sample of the corresponding D-value; secondly it put forward the similarity matching algorithm; finally, the experimental results prove that the algorithm can effectively measure the similarity of time-series with multiple granularities.

Key words: time-series, similarity matching, time granularity