ESPSA: A prediction-based algorithm for streaming time series segmentation
ESPSA: A prediction-based algorithm for streaming time series segmentation
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ESPSA:一种基于预测的流时间序列分割算法
DOI:
10.1016/j.eswa.2014.03.043
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发表时间:
2014-10
影响因子:
8.5
通讯作者:
Wang, Yuanzhen
中科院分区:
文献类型:
--
作者:
Li, Guiling;Cai, Zhihua;Kang, Xiaojun;Wu, Zongda;Wang, Yuanzhen
Streaming time series segmentation is one of the major problems in streaming time series mining, which can create the high-level representation of streaming time series, and thus can provide important supports for many time series mining tasks, such as indexing, clustering, classification, and discord discovery. However, the data elements in streaming time series, which usually arrive online, are fast-changing and unbounded in size, consequently, leading to a higher requirement for the computing efficiency of time series segmentation. Thus, it is a challenging task how to segment streaming time series accurately under the constraint of computing efficiency. In this paper, we propose exponential smoothing prediction-based segmentation algorithm (ESPSA). The proposed algorithm is developed based on a sliding window model, and uses the typical exponential smoothing method to calculate the smoothing value of arrived data element of streaming time series as the prediction value of the future data. Besides, to determine whether a data element is a segmenting key point, we study the statistical characteristics of the prediction error and then deduce the relationship between the prediction error and the compression rate. The extensive experiments on both synthetic and real datasets demonstrate that the proposed algorithm can segment streaming time series effectively and efficiently. More importantly, compared with candidate algorithms, the proposed algorithm can reduce the computing time by orders of magnitude.
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DOI:
10.1049/cp:19991109
发表时间:
1999
期刊:
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影响因子:
--
作者:
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DOI:
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2005-12
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2005 IEEE/RSJ International Conference on Intelligent Robots and Systems
影响因子:
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通讯作者:
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DOI:
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发表时间:
2007
期刊:
Acta Automatica Sinica
影响因子:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
2010
期刊:
--
影响因子:
--
作者:
Xia Shi-xiong
通讯作者:
Xia Shi-xiong