A Simple and Effective Algorithm to Calculate the Hurst Exponent
Abstract
In 1951 the British hydrologist Harold Edwin Hurst published the paper: “Long Term Storage Capacity of Reservoirs”. The paper introduced the Hurst Exponent. It was a tool to analyze river flows to help determine the appropriate size of a reservoir. In 1968 Benoit B. Mandelbrot and John Van Ness published the seminal paper “Fractional Brownian Motions, Fractional Noises and Applications” In effect this paper broadened the applications of the Hurst Exponent to time series in physics, geophysical sciences, medical science, biology, information sciences, economics, finance, etc. The present paper presents an algorithm to calculate the Hurst Exponent. It is based on the “bootstrap method” introduced by Bradley Efron in 1979. It is simple to implement, and permits the assignment of measures of accuracy to the estimand.
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