Nothing
itpE3 <-
function(vP,objeto){
epsilon <- objeto$epsilon
maxiter <- objeto$maxiter
fg <- objeto$fg
dg <- objeto$dg
response <- objeto$y
n <- length(response)
orig <- objeto$orig
pspm <- objeto$pspm
penm <- objeto$penm
pspp <- objeto$pspp
penp <- objeto$penp
p <- objeto$p
l1.mu <- objeto$l1.mu
l1.phi <- objeto$l1.phi
l.mu.i <- objeto$l.mu.i
l.phi.i <- objeto$l.phi.i
qm <- objeto$qm
q <- objeto$q
l <- objeto$l
theta_new <- vP
v <- objeto$v
tol <- 1
cont <- 0
if(attr(l1.phi,"link")=="logarithmic") efip <- solve(((fg-1)/4)*crossprod(pspp) + penp)
while(tol > epsilon){
theta <- theta_new
if(orig=="nonlinear"){
mu_es <- objeto$mu(theta)
pspm <- objeto$GradD(theta)
}else{mu_es <- l.mu.i(pspm%*%theta[1:(p+sum(qm))])}
phi_es <- l.phi.i(pspp%*%theta[(p+sum(qm)+1):(p+sum(qm)+sum(q)+l)])
z_es <- (response - mu_es)/sqrt(phi_es)
v_es <- v(z_es)
pspmw <- pspm*matrix(dg*l1.mu(mu_es)^2/phi_es,n,p+sum(qm))
thetam <- theta[1:(p+sum(qm))] + (1/2)*solve(crossprod(pspm,pspmw) + penm)%*%(crossprod(pspm,l1.mu(mu_es)*v_es*(z_es)/sqrt(phi_es))-penm%*%theta[1:(p+sum(qm))])
if(attr(l1.phi,"link")=="logarithmic")
thetap <- theta[(p+sum(qm)+1):(p+sum(qm)+sum(q)+l)] + (1/2)*efip%*%(crossprod(pspp,(v_es*(z_es)^2 - 1)/2) - penp%*%theta[(p+sum(qm)+1):(p+sum(qm)+sum(q)+l)])
else
thetap <- theta[(p+sum(qm)+1):(p+sum(qm)+sum(q)+l)] + (1/2)*solve(((fg-1)/4)*crossprod(pspp*matrix(l1.phi(phi_es)^2,n,ncol(pspp))) + penp)%*%(crossprod(pspp,l1.phi(phi_es)*(v_es*(z_es)^2 - 1)/2) - penp%*%theta[(p+sum(qm)+1):(p+sum(qm)+sum(q)+l)])
theta_new <- c(thetam,thetap)
theta_pd <- ifelse(abs(theta)<=epsilon,1,theta)
tol <- max(abs(theta_new-theta)/abs(theta_pd))
cont <- cont + 1
if(cont > maxiter) stop("no convergence was obtained!!",call.=FALSE)
}
theta_new
}
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