Estimating the variance of the first derivative of log-likelihood function
Usage
meatReg(x, which, ...)
Value
A $$k \times k$$ covariance matrix of first derivative of log-likelihood function
Arguments
x
a fitted model object. Currently only implemented for zipath object with family="negbin"
which
which penalty parameter(s)?
...
arguments passed to the estfunReg function.
Author
Zhu Wang <zwang145@uthsc.edu>
Details
See reference below
References
Zhu Wang, Shuangge Ma and Ching-Yun Wang (2015) Variable selection for zero-inflated and overdispersed data with application to health care demand in Germany, Biometrical Journal. 57(5):867-84.