Minimum Entropy Density Method for the Time Series Analysis

Details Minimum Entropy Density Method for the Time Series Analysis Minimum Entropy Density Method for the Time Series Analysis

2006-07-30

arxiv.org/abs/physics/0607282v2

Physics

Data Analysis, Statistics and Probability

11 pages, 7 figures

Scientific paper

The entropy density is an intuitive and powerful concept to study the complicated nonlinear processes derived from physical systems. We develop the minimum entropy density method (MEDM) to detect the structure scale of a given time series, which is defined as the scale in which the uncertainty is minimized, hence the pattern is revealed most. The MEDM is applied to the financial time series of Standard and Poor's 500 index from February 1983 to April 2006. Then the temporal behavior of structure scale is obtained and analyzed in relation to the information delivery time and efficient market hypothesis.

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