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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hurst entropy: A method to determine predictability in a binary series based on a fractal-related process

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Ayres Ferraz, Mariana Sacrini [1] ; Kihara, Alexandre Hiroaki [1]
Total Authors: 2
[1] Univ Fed ABC, CMCC, BR-09606045 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Physical Review E; v. 99, n. 6 JUN 14 2019.
Web of Science Citations: 0

Shannon's concept of information is related to predictability. In a binary series, the value of information relies on the frequency of 0's and 1's, or how it is expected to occur. However, information entropy does not consider the bias in randomness related to autocorrelation. In fact, it is possible for a binary temporal series to carry both short-and long-term memories related to the sequential distribution of 0's and 1's. Although the Hurst exponent measures the range of autocorrelation, there is a lack of mathematical connection between information entropy and autocorrelation present in the series. To fill this important gap, we combined numerical simulations and an analytical approach to determine how information entropy changes according to the frequency of 0's and 1's and the Hurst exponent. Indeed, we were able to determine how predictability depends on both parameters. Our findings are certainly useful to several fields when binary times series are applied, such as neuroscience to econophysics. (AU)

FAPESP's process: 17/26439-0 - An interdisciplnary approach on the role of gap junctions and miRNAs in the development and degeneration of the nervous system
Grantee:Alexandre Hiroaki Kihara
Support type: Regular Research Grants
FAPESP's process: 15/50122-0 - Dynamic phenomena in complex networks: basics and applications
Grantee:Elbert Einstein Nehrer Macau
Support type: Research Projects - Thematic Grants