Derv1: Calculating the first derivative of the pencopula likelihood...

Description Usage Arguments Details Value Author(s) References

View source: R/Derv1.R

Description

Calculating the first derivative of the pencopula likelihood function w.r.t. parameter b.

Usage

1
Derv1(penden.env)

Arguments

penden.env

Containing all information, environment of pencopula().

Details

The calculation of the first derivative of the pencopula likelihood function w.r.t. b equals

\eqn{s(b,lambda)=}

with

\eqn{P(lambda)}

is the penalty matrix, saved in the environment.

Value

Derv1.pen

first order derivation of the penalized likelihood function w.r.t. parameter b.

Derv1.pen is saved in the environment.

Author(s)

Christian Schellhase <cschellhase@wiwi.uni-bielefeld.de>

References

Flexible Copula Density Estimation with Penalized Hierarchical B-Splines, Kauermann G., Schellhase C. and Ruppert, D. (2013), Scandinavian Journal of Statistics 40(4), 685-705.


pencopula documentation built on May 2, 2019, 7:21 a.m.