Camilla Ferretti

Author's titles

An interactive MATLAB TOOL for the estimation of the directional mobility index compared to some other mobility measures digital

by Danilo Aringhieri, Camilla Ferretti

Year: 2018

The Directional Mobility Measurement tool (DMMtool.m) is a free interactive instrument, which computes in MATLAB the directional mobility index by automatically importing and elaborating the data from a wide-format panel, not necessarily balanced, stored in a ‘.xls’ or ‘.xlsx’ spreadsheet, for a single, quantitative, ‘size-type’ scalar variable. We will imagine a sample of firms observed over many successive years to assess their tendency to upsize or downsize...

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Mobility as prevailing direction for transition matrices digital

by Camilla Ferretti

Year: 2012

SUMMARY Mobility indices are important tools for summarizing and comparing the dynamics of different samples. A mobility index is defined as a function which assigns a real value I to a given transition matrix . The function I ðPÞ, where P is the transition matrix, is chosen to describe a specific type of mobility (e.g. the tendency to leave the current state). In this paper we develop a family of mobility indices capable of embodying information on both the intensity and the prevailing direction of mobility in the sample under study. Keywords: Mobility Index, Transition Matrix, Prevailing Direction.

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