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Wavelet based outlier correction for power controlled turning point detection in surveillance systems Economic Modelling

Författare:
Publiceringsår: 2013
Språk: Engelska
Sidor: 317-321
Publikation/Tidskrift/Serie: Economic Modelling
Volym: 30
Dokumenttyp: Artikel
Förlag: Elsevier

Sammanfattning

Detection turning points in unimodel has various applications to time series which have cyclic periods. Related techniques are widely explored in the field of statistical surveillance, that is, on-line turning point detection procedures. This paper will first present a power controlled turning point detection method based on the theory of the likelihood ratio test in statistical surveillance. Next we show how outliers will influence the performance of this methodology. Due to the sensitivity of the surveillance system to outliers, we finally present a wavelet multiresolution (MRA) based outlier elimination approach, which can be combined with the on-line turning point detection process and will then alleviate the false alarm problem introduced by the outliers.

Disputation

Nyckelord

  • Business and Economics
  • Unimodel
  • Turning point
  • Statistical surveillance
  • Outlier
  • Wavelet multi-resolution
  • Threshold.

Övriga

  • Swedish Research Council
Published
Yes
  • ISSN: 0264-9993

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