dNBpsis {RCM} | R Documentation

## A score function for the psi of a given dimension

### Description

A score function for the psi of a given dimension

### Usage

    dNBpsis(beta, X, reg, theta, muMarg, ...)

### Arguments

`beta` | a scalar, the initial estimate
`X` | the n-by-p count matrix
`reg` | the regressor matrix, the outer product of current row and column scores
`theta` | a n-by-p matrix with the dispersion parameters
`muMarg` | the nxp offset matrix
`...` | other arguments passed on to the jacobian

### Value

The evaluation of the score function at beta, a scalar

[Package RCM version 1.2.0 Index]