Specifies the information required to fit a Negative Binomial
generalized linear model, with known
theta
parameter, using
glm()
.
USAGE:
negative.binomial(theta = stop("theta must be specified"), link = "log")
REQUIRED ARGUMENTS:
theta
The known value of the additional parameter,
theta.
OPTIONAL ARGUMENTS:
link
The link function. Currently must be one of
log,
sqrt or
identity.
VALUE:
A list of functions and expressions needed by
glm()
to fit a Negative Binomial
generalized linear model.
SEE ALSO:
,
,
EXAMPLES:
# Fitting a Negative Binomial model to the quine data
# with theta=2 assumed known.
#
quine.nb <- glm(Days ~ .^4, family = negative.binomial(2), data = quine)