gradlam_bes_dbb {bbreg} | R Documentation |
gradlam_bes_dbb
Description
Gradient of the Q-function (adapted for the discrimination test between bessel and beta - DBB) to calculate the gradient required for optimization via optim
.
This option is related to the bessel regression.
Usage
gradlam_bes_dbb(lam, wz, z, v, mu, link.precision)
Arguments
lam |
coefficients in lambda related to the covariates in v. |
wz |
parameter wz representing E(1/W_i|Z_i = z_i, theta). |
z |
response vector with 0 < z_i < 1. |
v |
matrix containing the covariates for the precision submodel. Each column is a different covariate. |
mu |
mean parameter (vector having the same size of z). |
link.precision |
a string containing the link function the precision parameter. The possible link functions for the precision parameter are "identity", "log", "sqrt", "inverse". |
Value
Scalar representing the output of this auxiliary gradient function for the bessel case.
[Package bbreg version 2.0.2 Index]