mmsNiWpdfC {NPflow}

C++ implementation of multivariate structured Normal inverse Wishart probability density function for multiple inputs

Description

C++ implementation of multivariate structured Normal inverse Wishart probability density function for multiple inputs

Usage

mmsNiWpdfC(xi, psi, Sigma, U_xi0, U_psi0, U_B0, U_Sigma0, U_df0, Log = TRUE)

Arguments

xi

data matrix of dimensions p x n where columns contain the observed mean vectors.

psi

data matrix of dimensions p x n where columns contain the observed skew parameter vectors.

Sigma

list of length n of observed variance-covariance matrices, each of dimensions p x p.

U_xi0

mean vectors matrix of dimension p x K, K being the number of distributions for which the density probability has to be evaluated.

U_psi0

skew parameter vectors matrix of dimension p x K.

U_B0

list of length K of structured scale matrices, each of dimensions p x p.

U_Sigma0

list of length K of variance-covariance matrices, each of dimensions p x p.

U_df0

vector of length K of degree of freedom parameters.

Log

logical flag for returning the log of the probability density function. Defaults is TRUE.

Value

matrix of densities of dimension K x n

References

Hejblum BP, Alkhassim C, Gottardo R, Caron F and Thiebaut R (2019) Sequential Dirichlet Process Mixtures of Multivariate Skew t-distributions for Model-based Clustering of Flow Cytometry Data. The Annals of Applied Statistics, 13(1): 638-660. <doi: 10.1214/18-AOAS1209>. <arXiv: 1702.04407>. https://arxiv.org/abs/1702.04407 doi:10.1214/18-AOAS1209