initParamList {multimix}R Documentation

Initialise the parameter list.

Description

Although the starting parameter list P may be specified directly, Note also that any matrices specified must be positive definite. This function calculates an initial P from D and a starting value for Z.

Usage

initParamList(D, Z)

Arguments

D

an object of class multimixSettings—see data_organise for details.

Z

an n×qn \times q matrix, where nn is the number of rows of dframe and qq is the number of components in the mixture. During the fitting ZijZ_{ij} holds the currently estimated probability that observation ii belongs to component jj. Often Z is initialized to a matrix of indicator columns for a partition of the data. It is also common to initialize Z to be the final Z from the fitting of a simpler model.

Value

an object of class multimixParamList which is a list with the following elements:


[Package multimix version 1.0-10 Index]