Nothing
exact.deletion <- function(object) {
if(is.null(object$model))
stop("glm object has to be fitted with \'model=TRUE\'")
start <- coef(object) # start values to be used in model fitting
fit <- object$fitted
devResidAbs <- abs(deviance(object))
mf <- model.frame(object)
N <- nrow(mf)
if(!is.null(model.weights(mf))) mw <- model.weights(mf)
else mw <- rep(1, nrow(object$model))
resp <- model.response(mf)
if(NCOL(resp) == 1L) {
n <- rep(1, nrow(mf))
resp <- cbind(resp, n-resp)
y <- resp
}
else y <- resp[,1] / rowSums(resp)
object$model[,1] <- resp*mw ### new response including the weights
newCall <- update(object, subset=-i, start=start, evaluate=F)
residLik <- rep(0, N)
for(i in 1:N) {
objLeave1out <- eval(newCall)
devResidLeave1out <- deviance(objLeave1out)
residLik[i] <- sign(y[i]-fit[i]) * sqrt(devResidAbs-devResidLeave1out)
}
names(residLik) <- 1:N
residLik
}
Residuals <- function(object, type=c("approx.deletion",
"exact.deletion", "standard.deviance", "standard.pearson",
"deviance", "pearson", "working", "response", "partial"))
{
type <- match.arg(type)
res <- switch(type,
approx.deletion = rstudent(object), exact.deletion =
exact.deletion(object), standard.deviance = rstandard(object),
standard.pearson = rstandard(object, type="pearson"), deviance =
residuals(object), pearson = residuals(object, type="pearson"),
working = residuals(object, type="working"), response =
residuals(object, type="response"), partial = residuals(object, type="partial"))
return(res)
}
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