Title: Finite mixtures of discretized beta distribution to model polarization and floatation of ordinal data
Authors: Rosaria Simone - University of Naples Federico II (Italy) [presenting]
Abstract: Flexible mixture modelling based on the discretized Beta distribution is proposed to parameterize polarization and floatation of ordered discrete evaluations, as ratings and count data. The framework entails versatile interpretation of results and broad applicative outreach in all studies where the interest lies in disclosing and characterizing clusters of opposite and intermediate responses. A summarizing discussion with respect to identifiability issues is presented. Finally, the proposal is supported with empirical evidence from several datasets, assuming a comparative perspective with alternative approaches.