Multiscale Trend Analysis

Details Multiscale Trend Analysis Multiscale Trend Analysis

2003-05-05

arxiv.org/abs/physics/0305013v2

Fractals, 12, No. 3, 275-292 (2004)

Physics

Data Analysis, Statistics and Probability

37 pages, 19 figures

Scientific paper

10.1142/S0218348X04002604

This paper introduces a multiscale analysis based on optimal piecewise linear approximations of time series. An optimality criterion is formulated and on its base a computationally effective algorithm is constructed for decomposition of a time series into a hierarchy of trends (local linear approximations) at different scales. The top of the hierarchy is the global linear approximation over the whole observational interval, the bottom is the original time series. Each internal level of the hierarchy corresponds to a piecewise linear approximation of analyzed series. Possible applications of the introduced Multiscale Trend Analysis (MTA) go far beyond the linear interpolation problem: This paper develops and illustrates methods of self-affine, hierarchical, and correlation analyses of time series.

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