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    题名: Change periods detection for multivariate time series with fuzzy methods
    作者: Li, W.;Hu, R.;Wu, Berlin
    吳柏林
    贡献者: 應數系
    关键词: Change periods;Change-points;Cluster centers;Empirical studies;Fuzzy entropy;Fuzzy methods;Fuzzy statistic;Fuzzy time series;Germany;Integrated identification;Macroeconomic indicators;Multivariate time series;Performance indices;Structure change;Testing method;Artificial intelligence;Computer software;Membership functions;Time series;Time series analysis
    日期: 2009-12
    上传时间: 2015-05-07 15:28:43 (UTC+8)
    摘要: Researchers have proposed a lot of detecting and testing methods about change points. While in the real case, it shows that the structure change of a time series was changed gradually, that is the change points has illustrated senses of fuzziness. This concept is important in fitting different models to different regimes of the data regarding economic interpretation of the data during that regime. In this paper we present an integrated identification procedure for change periods detection. The membership function of each system, which include multivariate time series data, corresponding to the cluster centers as performance index grouping is calculated. A fuzzy time series C* t is defined on averages of cumulative fuzzy entropies of the three time series. Finally, an empirical study about change periods identification for Germany, France and Greece major macroeconomic indicators are demonstrated. ©2009 IEEE.
    關聯: Proceedings - 2009 International Conference on Computational Intelligence and Software Engineering, CiSE 2009,-5363912
    数据类型: conference
    DOI 連結: http://dx.doi.org/10.1109/CISE.2009.5363912
    DOI: 10.1109/CISE.2009.5363912
    显示于类别:[應用數學系] 會議論文

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