A new mobility index for Trandition Matrices

Camilla Ferretti, Piero Ganugi

Risultato della ricerca: Working paper


This work treats the construction of a mobility index able to grasp the prevailing direction in the dynamics ruled by a given transition matrix. The states of the matrix are based on an ordered economic variable, such as firm size, income or ratings, for which the future state can be better or worse than the current one. We propose here a whole family of directional indices, evaluated as a function of the transition matrix, and defined so that their absolute value measures the intensity of mobility, and their sign (+/-) represents the prevailing direction towards improvement/worsening in the dynamics under study.
Lingua originaleEnglish
EditoreISU - Università Cattolica del Sacro Cuore
Numero di pagine18
Stato di pubblicazionePubblicato - 2012


  • Mobility Index
  • Prevailing Direction


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