Deviance of a Fitted Model - Generic Function
DESCRIPTION:
Returns the deviance or weighted residual sum of squares of the model.
This function is an S Version 3 generic (see Methods);
method functions can be written to handle specific
S Version 3 classes of data. Classes that already
have methods for this function include
bdGlm
,
bdLm
,
gam
,
glm
,
lm
, and
tree
.
USAGE:
deviance(object, ...)
REQUIRED ARGUMENTS:
- object
-
a fitted model object.
OPTIONAL ARGUMENTS:
- ...
-
methods may have additional arguments.
VALUE:
the deviance of the fitted model is returned.
DETAILS:
For
bdGlm
,
gam
,
glm
, and
tree
models, the
"deviance"
is a component
of
object
, in which case
deviance
is a simple extractor function.
For other models, the
gaussian
family is assumed and the
weighted residual sum of squares is returned.