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- W2046372970 abstract "We have calculated the Tsallis entropy and Fisher information matrix (entropy) of spatially correlated nonextensive systems, by using an analytic non-Gaussian distribution obtained by the maximum entropy method. The effects of the correlated variability on the Fisher information matrix are shown to be different from those on the Tsallis entropy. The Fisher information is increased (decreased) by a positive (negative) correlation, whereas the Tsallis entropy is decreased with increasing absolute magnitude of the correlation, independently of its sign. This fact arises from the difference in their characteristics. It implies from the Cram'er-Rao inequality that the accuracy of an unbiased estimate of fluctuation is improved by a negative correlation. A critical comparison is made between the present study and previous ones employing the Gaussian approximation for the correlated variability due to multiplicative noise." @default.
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- W2046372970 date "2008-08-28" @default.
- W2046372970 modified "2023-10-16" @default.
- W2046372970 title "Effects of correlated variability on information entropies in nonextensive systems" @default.
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- W2046372970 doi "https://doi.org/10.1103/physreve.78.021141" @default.
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