Fitter Function for Zero-Inflated Models

zim.fit is the basic computing engine called by zim used to fit zero-inflated models. This should usually not be used directly unless by experienced users.

zim.fit(
  y,
  X,
  Z,
  weights = rep(1, nobs),
  offset = rep(0, nobs),
  control = zim.control(...),
  ...
)

Arguments

y

response variable.

X

design matrix for log-linear part.

Z

design matrix for logistic part.

weights

an optional vector of 'prior weights' to be used in the fitting process.

offset

offset variable

control

control arguments from zim.control.

...

additional argumetns.

See also

zim, zim.control