Generation and prediction of self-similar processes by surrogates

被引:3
|
作者
Chakraborty, D
Roy, TK
机构
[1] Saha Inst Nucl Phys, Div Theory, Kolkata 700064, W Bengal, India
[2] NiCT Tohoku JGN II Res Ctr, Sendai, Miyagi, Japan
关键词
self-similar process; fractional Brownian motion; Hurst parameter; power law; surrogate data;
D O I
10.1142/S0218348X06003040
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A self-similar process has power spectrum with power law depending on its self-similarity parameter H and we use this property for its generation by the method of surrogate data. The surrogates are a set of random data with the same distribution as that of the increments of the process. These are iteratively rearranged according to the rank order of a time series obtained with the same power law spectrum. The method is fast, and reliable as shown by the characteristics reproduced. It is also possible to extend this method to prediction of a self-similar process, the success of which will depend on the number of available data.
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页码:17 / 26
页数:10
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