Abstract:In healthcare studies, count data sets measured with covariates often exhibit heterogeneity and contain extreme values. To analyse such count data sets, we use a finite mixture of regression model framework and investigate a robust estimation approach, called the L 2 E [D.W. Scott, On fitting and adapting of density estimates, Comput. Sci. Stat. 30 (1998), pp. 124-133], to estimate the parameters. The L 2 E is based on an integrated L 2 distance between parametric conditional and true conditional mass function… Show more
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