optimized.run {ZIGP}R Documentation

Calculation of valid initial values

Description

'optimized.run' calculates valid initial values for the 'optim' method.

Usage

optimized.run(Y, X, W, Z)

Arguments

Y response vector of length n.
X design matrix of dim (n x p) for mean modelling.
W design matrix of dim (n x r) for overdispersion modelling.
Z design matrix of dim (n x q) for zero inflation modelling.

Details

t.i has to be defined as the exposure. n has to be defined as the number of observations dim(X)[1].

Examples

Y <- c(3,0,2)
X <- matrix(c(1:3,4,3,5),3,2)
W <- c(3,-4,-1)
Z <- rep(1,3)
n <- dim(X)[1]
t.i <<- rep(1,n)
optimized.run(Y,X,W,Z)
#[1]           X1         X2          W          Z 
#[2]   -0.6783368  0.4559966  0.1238029 -1.3862944 

[Package ZIGP version 2.1 Index]