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mpath (version 0.4-2.26)

estfunReg: Extract Empirical First Derivative of Log-likelihood Function

Description

Generic function for extracting the empirical first derivative of log-likelihood function of a fitted regularized model.

Usage

estfunReg(x, ...)

Value

A matrix containing the empirical first derivative of log-likelihood functions. Typically, this should be an \(n \times k\) matrix corresponding to \(n\) observations and \(k\) parameters. The columns should be named as in coef or terms, respectively.

Arguments

x

a fitted model object.

...

arguments passed to methods.

Author

Zhu Wang <zwang145@uthsc.edu>

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.

See Also

zipath

Examples

Run this code
data("bioChemists", package = "pscl")
fm_zinb <- zipath(art ~ . | ., data = bioChemists, family = "negbin", nlambda=10, maxit.em=1)
res <- estfunReg(fm_zinb, which=which.min(fm_zinb$bic))

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