Negative log-likelihood for the overdispersion parameter (negative binomial regression)

Negative log-likelihood for the overdispersion parameter (negative binomial regression)

nll_max_alpha(alpha, beta, y, x, lambda)

Arguments

alpha

parameter of negative binomial

beta

a p-vector of coefficients

y

a n-vector of response

x

a n x p matrix of design

lambda

mean of Poisson censoring process