Nothing
summary.npregress<- function(object, criteria="call", ...) {
y <- object$call$y
df <- object$df
r <- object$residuals
n <- length(r)
stderr <- sqrt(sum(r^2)/(n-df))
sigma2 <- stderr^2
if (any(criteria=="call")) {
criteria <- object$call$criterion
anscrit <- NULL
} else {
crit <-c("aic","aicc","gcv","bic","gmdl")
if (all(!(criteria%in%crit))) stop(paste("criteria are:",crit,"\n"))
criteria <- criteria[criteria%in%crit]
anscrit <- NULL
}
if (any(criteria=="gcv")) anscrit <- c(anscrit,log(sigma2)-2*log(1-df/n))
if (any(criteria=="aic")) anscrit <- c(anscrit,log(sigma2)+2*df/n)
if (any(criteria=="aicc")) anscrit <- c(anscrit,log(sigma2)+1+(2*(df+1))/(n-df-2))
if (any(criteria=="bic")) anscrit <- c(anscrit,log(sigma2) + log(n)*(df)/n)
if (any(criteria=="gmdl")) {
Sbul <- n*sigma2/(n-df)
anscrit <- c(anscrit,log(Sbul)+df/n*log((sum(y^2)-n*sigma2)/(df*Sbul)))
}
if ((criteria!="user")&(!is.null(anscrit))) {
names(anscrit) <- criteria
} else {
anscrit <- "No Informative Criterion"
names(anscrit) <- criteria
}
ans <- list(residuals=r,Std.Error=stderr,Df=df,Resid.Df=n-df,criteria=anscrit,kernel=object$call$kernel,crit4bw=object$call$criterion,bandwidth=object$bandwidth)
class(ans) <- "summary.npregress"
ans
}
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