FD.moments {FlexDir}

Flexible Dirichlet Moments

Description

Moments of a fitted Flexible Dirichlet distribution. The function returns the mean and variance vectors and the covariance and correlation matrices.

Usage

FD.moments(x)

Arguments

x

an object of class FDfitted, usually the result of FD.estimation.

References

Ongaro, A. and Migliorati, S. (2013) A generalization of the Dirichlet distribution. Journal of Multivariate Analysis, 114, 412–426.

Migliorati, S., Ongaro, A. and Monti, G. S. (2016) A structured Dirichlet mixture model for compositional data: inferential and applicative issues. Statistics and Computing, doi:10.1007/s11222-016-9665-y.

See Also

FD.estimation, FD.barycenters, FD.clusterdistances

Examples

data <- FD.generate(n=20,a=c(12,7,15),p=c(0.3,0.4,0.3),t=8)
data
results <- FD.estimation(data, normalize=TRUE,iter.initial.SEM = 5,iter.final.EM = 10)
results
FD.moments(results)