Nothing
Mstep.mmglm1 <- function(object, u){
m <- ncol(u)
beta <- NULL
sigma <- NULL
if (object$glmfamily$family=="binomial")
y <- cbind(object$y, object$size-object$y)
else y <- object$y
for (k in 1:m){
w <- u[,k]
z <- glm.fit(object$Xdesign, y, weights=w,
start=object$beta[,k], family=object$glmfamily,
control=glm.control(maxit=500))
fitval <- fitted(z)
var <- object$glmfamily$variance(fitval)
if (object$glmfamily$family=="binomial"){
fitval <- object$size*fitval
var <- object$size*var
}
# if (distn!="binomial") sigma[k] <- sqrt(sum(w*(x-fitval)^2/var)/sum(w))
# else sigma[k] <- sqrt(sum(w*(x[,1]/pn$size-fitval)^2/var)/sum(w))
sigma <- c(sigma, sqrt(sum(w*(object$y-fitval)^2/var)/sum(w)))
# if (object$glmfamily$family!="binomial")
# sigma <- c(sigma, sqrt(sum(w*(object$y-fitval)^2/var)/sum(w)))
# else sigma <- c(sigma, sqrt(sum(w*object$size*(object$y/object$size-fitval)^2/var)/sum(w)))
beta <- cbind(beta, as.vector(coefficients(z)))
}
return(list(beta=beta, sigma=sigma))
}
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