https://github.com/cran/gss
Tip revision: 1482eb76bdcd583e3ebb1dcdd73421ce1fed6012 authored by Chong Gu on 08 August 1977, 00:00:00 UTC
version 0.8-2
version 0.8-2
Tip revision: 1482eb7
summary.gssanova.Rd
\name{summary.gssanova}
\alias{summary.gssanova}
\title{Assessing Smoothing Spline ANOVA Fits with Non Gaussian Responses}
\description{
Calculate various summaries of smoothing spline ANOVA fits with non
Gaussian responses.
}
\usage{
summary.gssanova(object, diagnostics=FALSE, ...)
}
\arguments{
\item{object}{Object of class \code{"gssanova"}.}
\item{diagnostics}{Flag indicating if diagnostics are required.}
\item{...}{Ignored.}
}
\value{
\code{summary.gssanova} returns a list object of \code{\link{class}}
\code{"summary.gssanova"} consisting of the following components.
The entries \code{pi}, \code{kappa}, \code{cosines}, and
\code{roughness} are only calculated if \code{diagnostics=TRUE}.
\item{call}{Fitting call.}
\item{family}{Error distribution.}
\item{method}{Method for smoothing parameter selection.}
\item{dispersion}{Assumed or estimated dispersion parameter.}
\item{iter}{Number of performance-oriented iterations performed.}
\item{fitted}{Fitted values on the scale of the link.}
\item{residuals}{Working residuals on the link scale.}
\item{rss}{Residual sum of squares.}
\item{dev.resid}{Deviance residuals.}
\item{deviance}{Deviance of the fit.}
\item{dev.null}{Deviance of the null model.}
\item{alpha}{Estimated size for \code{family="nbinomial"} with one
column responses. Estimated inverse scale of log life time for
\code{family="nbinomial"}, \code{"lognorm"}, or
\code{"loglogis"}.}
\item{penalty}{Roughness penalty associated with the fit.}
\item{pi}{"Percentage decomposition" of "explained variance" into
model terms.}
\item{kappa}{Concurvity diagnostics for model terms. Virtually the
square roots of variance inflation factors of a retrospective
linear model.}
\item{cosines}{Cosine diagnostics for practical significance of
model terms.}
\item{roughness}{Percentage decomposition of the roughness penalty
\code{penalty} into model terms.}
}
\details{
Similar to the iterated weighted least squares fitting of
\code{\link{glm}}, penalized likelihood regression fit can be calculated
through iterated penalized weighted least squares.
The diagnostics are based on the "pseudo" Gaussian response model
behind the weighted least squares problem at convergence.
}
\author{Chong Gu, \email{chong@stat.purdue.edu}}
\seealso{
Fitting function \code{\link{gssanova}} and methods
\code{\link{predict.ssanova}}, \code{\link{fitted.gssanova}}.
}
\keyword{models}
\keyword{regression}
\keyword{smooth}