The Power-law Tail Exponent of Income Distributions

In this paper we tackle the problem of estimating the power-law tail exponent of income distributions by using the Hill's estimator. A subsample semi-parametric bootstrap procedure minimising the mean squared error is used to choose the power-law cutoff value optimally. This technique is applied to personal income data for Australia and Italy.Comment: Latex2e v1.6; 8 pages with 3 figures; in press (Physica A

Mason, Camilo y Rougier, Marcelo (coords.). A las palabras se las lleva el viento, lo escrito queda. Las revistas en los orígenes de la profesionalización del campo de la economía (1956-1966). Imago Mundi, 2023. 502 pp.

Reseña de A las palabras se las lleva el viento, lo escrito queda. Las revistas en los orígenes de la profesionalización del campo de la economía (1956-1966) de Camilo Mason y Marcelo Rougie

Dynamic scaling approach to study time series fluctuations

We propose a new approach for properly analyzing stochastic time series by mapping the dynamics of time series fluctuations onto a suitable nonequilibrium surface-growth problem. In this framework, the fluctuation sampling time interval plays the role of time variable, whereas the physical time is treated as the analog of spatial variable. In this way we found that the fluctuations of many real-world time series satisfy the analog of the Family-Viscek dynamic scaling ansatz. This finding permits to use the powerful tools of kinetic roughening theory to classify, model, and forecast the fluctuations of real-world time series.Comment: 25 pages, 7 figures, 1 tabl