motGradient {lmmot}

Gradient of log-Likelihood for mot model

Description

Gradient of log-Likelihood for right censored Multiple Ordinal Tobit (MOT) model.

Usage

motGradient(param, xx, y, tau)

Arguments

param

parameter vector: (beta_0, beta_1, ... , beta_m, sigma).

xx

design matrix of the model.

y

observation vector.

tau

threshold vector from tau_1 to tau_K.

Value

gradient of log-likelihood, vector with all observations.

Author(s)

Marvin Wright

See Also

lmmot