Outlier detection and localisation with wavelet based multifractal formalism

作者: Zbigniew R. Struzik , Arno P.J.M. Siebes

DOI:

关键词: Mathematical analysisMultifractal systemAnomaly detectionMathematicsOutlierStatistical physicsScalingWaveletMultifractal formalismWavelet transformStochastic process

摘要: We present a method of detecting and localising outliers in stochastic processes. The checks the internal consistency scaling behaviour process within paradigm multifractal spectrum. Deviation from expected spectrum is interpreted as potential presence outliers. detection part then supplemented by localisation analysis part, using local properties time series. Localised can be removed one one, with possibility dynamic verification spectral properties. Both formalism series are implemented on wavelet transform modulus maxima tree.

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