Abstract
The length of minimal and maximal blocks equally distant on log–log scale versus fluctuation function considerably influences bias and variance of DFA. Through a number of extensive Monte Carlo simulations and different fractional Brownian motion/fractional Gaussian noise generators, we found the pair of minimal and maximal blocks that minimizes the sum of mean-squared error of estimated Hurst exponents for the series of length N = 2 p , p = 7 , … , 15 . Sensitivity of DFA to sort-range correlations was examined using ARFIMA( p , d , q ) generator. Due to the bias of the estimator for anti-persistent processes, we narrowed down the range of Hurst exponent to 1 2 ⩽ H < 1 .
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More From: Physica A: Statistical Mechanics and its Applications
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