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Title: Small-shuffle surrogate data : testing for dynamics in fluctuating data with trends
Authors: Nakamura, Tomomichi
Small, Michael
Subjects: Algorithms
Error analysis
Time series analysis
Issue Date: 23-Nov-2005
Publisher: American Physical Society
Source: Physical review E, statistical, nonlinear, and soft matter physics, Nov. 2005, v. 72, no. 5, 056216, p. 1-6.
Abstract: We describe a method for identifying dynamics in irregular time series (short term variability). The method we propose focuses attention on the flow of information in the data. We can apply the method even for irregular fluctuations which exhibit long term trends (periodicities): situations in which previously proposed surrogate methods would give erroneous results. The null hypothesis addressed by our algorithm is that irregular fluctuations are independently distributed random variables (in other words, there is no short term dynamics). The method is demonstrated for numerical data generated by known systems, and applied to several actual time series.
Rights: Physical Review E © 2005 The American Physical Society. The Journal's web site is located at
Type: Journal/Magazine Article
DOI: 10.1103/PhysRevE.72.056216
ISSN: 1539-3755 (print)
1550-2376 (online)
Appears in Collections:EIE Journal/Magazine Articles

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