A robust method for shift detection in time series
نویسندگان
چکیده
منابع مشابه
a time-series analysis of the demand for life insurance in iran
با توجه به تجزیه و تحلیل داده ها ما دریافتیم که سطح درامد و تعداد نمایندگیها باتقاضای بیمه عمر رابطه مستقیم دارند و نرخ بهره و بار تکفل با تقاضای بیمه عمر رابطه عکس دارند
On rank tests for shift detection in time series
Robustified rank tests, applying a robust scale estimator, are investigated for reliable and fast shift detection in time series. The tests show good power for sufficiently large shifts, low false detection rates for Gaussian noise and high robustness against outliers. Wilcoxon scores in combination with a robust and efficient scale estimator achieve good performance in many situations.
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A classical test for the detection of level shifts in such weakly dependent data is the CUSUM test, which compares the partial sum of the first m observations to the sum of all observations for each candidate change-point m, and maximizes this statistic with respect to m after some appropriate scaling. Asymptotical critical values for the CUSUM test can be calculated from tables of the Kolmogor...
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ژورنال
عنوان ژورنال: Biometrika
سال: 2020
ISSN: 0006-3444,1464-3510
DOI: 10.1093/biomet/asaa004