mixAK (version 5.4)

NMixMCMCinitr: Initial component allocations for the NMixMCMC function

Description

This is a help function for NMixMCMC function. If initr is not given, it calculates reasonable initial values for component allocations. If initr argument is given then it is checked for consistency and formatted on output.

THIS FUNCTION IS NOT TO BE CALLED BY ORDINARY USERS.

Usage

NMixMCMCinitr(z, K, w, mu, Sigma, p, n, initr)

Value

A vector with reasonable initial component allocations.

Arguments

z

a vector (if \(p=1\)) or a \(n\times p\) matrix with initial values of scaled observations

K

a number of mixture components

w

a vector with (initial) mixture weights

mu

a vector of (initial) mixture means (if \(p=1\)) or a \(K\times p\) matrix with (initial) mixture means in rows (if \(p>1\))

Sigma

a vector of (initial) mixture variances (if \(p=1\)) or a \(K\,p\times p\) matrix with (initial) mixture covariance matrices put below each other

p

dimension of the data

n

number of observations

initr

a vector of initial component allocations to be checked for consistency. If not given then reasonable initials are generated.

Author

Arnošt Komárek

See Also

NMixMCMC.