specials {VGAM} | R Documentation |
Special Values or Quantities in a Fitted Object
Description
Return any special values or quantities in a fitted object, and in particular in a VGLM fit
Usage
specials(object, ...)
specialsvglm(object, ...)
Arguments
object |
an object of class |
... |
any additional arguments, to future-proof this function. |
Details
This extractor function was motivated by GAITD regression
(Yee and Ma, 2024)
where the values from three disjoint sets are referred
to as special.
More generally, S4 methods functions can be written so that
specials()
will work on any S4 object, where
what is called special depends on the methodology at hand.
Value
Returns any ‘special’ values or quantities associated with a fitted regression model. This is often something simple such as a list or a vector.
References
Yee, T. W. and Ma, C. (2024). Generally altered, inflated, truncated and deflated regression. Statistical Science, 39 (in press).
See Also
vglm
,
vglm-class
,
inflated
,
altered
,
truncated
,
Gaitdpois
,
gaitdpoisson
.
Examples
abdata <- data.frame(y = 0:7, w = c(182, 41, 12, 2, 2, 0, 0, 1))
fit1 <- vglm(y ~ 1, gaitdpoisson(a.mix = 0), data = abdata,
weight = w, subset = w > 0)
specials(fit1)