Density of a mixture of von Mises-Fisher distributions: Density of a mixture of von Mises-Fisher distributions
Description
Density of a mixture of von Mises-Fisher distributions.
Usage
dmixvmf(y, probs, mu, k, logden = FALSE)
Value
A vector with the (log) density values of y.
Arguments
y
A matrix with unit vectors.
probs
This is avector with the mixing probability of each group.
mu
A matrix with the mean direction of each group.
k
A vector with the concentration parameter of each group.
logden
If you the logarithm of the density values set this to TRUE.
Author
Michail Tsagris.
R implementation and documentation: Michail Tsagris mtsagris@uoc.gr.
Details
The function computes the density for a given mixture of von Mises-Fisher distributions.
References
Kurt Hornik and Bettina Grun (2014). movMF: An R Package for Fitting Mixtures of von Mises-Fisher Distributions
http://cran.r-project.org/web/packages/movMF/vignettes/movMF.pdf