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Memetic algorithm for multivariate time-series segmentation

delete2020-10-01
delete9
PRE
AI
H
Hyunki Lim
H
Heeseung Choi
Y
Yeji Choi
I
Ig-Jae Kim *
DOI:10.1016/j.patrec.2020.06.022delete
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摘要

摘要

En 中文
In recent years, analyzing time-series data has become an ever important research topic due to an increased number of temporal datasets in science and engineering. Segmentation is widely used in time-series data analysis because it provides a more compact representation by dividing the series into segments. Segmentation approaches based on genetic algorithms have been proposed to extract segments and patterns with a given objective, such as a low rate of change or periodicity from time-series data. However, they may not be effective in obtaining the precise solution because they perform global search. In this study, we propose a memetic algorithm for multivariate time-series segmentation. For efficient local refinement, we calculate a likelihood-based score for all time points and use it in the evolutionary process. Experiments demonstrate that the proposed method is superior to conventional segmentation methods. The source code of the proposed method can be downloaded from https://github.com/hlim-kist/ma_mts (C) 2020 Elsevier B.V. All rights reserved.
Keyword:
Time series segmentation
Multivariate data
Memetic algorithm
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期刊

Pattern Recognition Letters 封面图
Pattern Recognition Letters
IF:
3.3
论文数:
7.9K
被引数:
1.6W

机构

K
korea institute of science & technology (kist)
学者数:
1.2W
论文数: 1.3W
被引数: 23
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