Residuals From a Fitted Arbor Object
USAGE:
residuals.arbor(object, type)
REQUIRED ARGUMENTS:
- object
-
fitted model object of class
arbor
. This is assumed to be the result
of some function that produces an object with the same named
components as that returned by the
arbor
function.
OPTIONAL ARGUMENTS:
- type
-
Indicates method of residual for a classification tree (no distinction
is made for methods
"anova"
,
"poisson"
, or
"exp"
). Allows the
following types of residuals:
"usual"
(misclassification errors),
"pearson"
(sum of the observed minus fitted squared over fitted), and
"deviance"
(minus twice logarithm of fitted).
VALUE:
vector of residuals of type
type
from a fitted
arbor
object.
EXAMPLES:
fit <- arbor(skips ~ Opening + Solder + Mask + PadType + Panel,
data=solder, method='anova')
plot(predict(fit),residuals(fit))