Fractionalization is a measure of concentration of a qualitative distribution, while Polarization is a measure of its bimodality. We study the steepest ascent lines of these indexes on the probability simplex using the notion of natural gradient of Amari. An index of variation is suggested.
Fractionalization and Polarization
ROGANTIN, MARIA PIERA
2014-01-01
Abstract
Fractionalization is a measure of concentration of a qualitative distribution, while Polarization is a measure of its bimodality. We study the steepest ascent lines of these indexes on the probability simplex using the notion of natural gradient of Amari. An index of variation is suggested.
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