Simulation of compositional data from the Flexible Dirichlet distribution
Simulation of compositional data from the Flexible Dirichlet distribution.
rfd(n, alpha, prob, tau)
n |
The sample size. |
alpha |
A vector of the non-negative alpha parameters. |
prob |
A vector of the clusters' probabilities that must sum to one. |
tau |
The positive scalar tau parameter. |
For more information see the references.
A matrix with compositional data.
Michail Tsagris ported from the R package FlexDir. mtsagris@uoc.gr.
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. (2017). A structured Dirichlet mixture model for compositional data: inferential and applicative issues. Statistics and Computing, 27, 963–983.
alpha <- c(12, 11, 10) prob <- c(0.25, 0.25, 0.5) x <- rfd(100, alpha, prob, 7)
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