R: Print Exit Information for gnm Fit

exitInfo {gnm} | R Documentation

## Print Exit Information for gnm Fit

### Description

A utility function to print information on final iteration in `gnm` fit, intended for use when `gnm` has not converged.

### Usage

    exitInfo(object)

### Arguments

`object` | a `gnm` object.

### Details

If `gnm` has not converged within the pre-specified maximum number of iterations, it may be because the algorithm has converged to a non-solution of the likelihood equations. In order to determine appropriate action, it is necessary to differentiate this case from one of near-convergence to the solution.

`exitInfo` prints the absolute score and the corresponding convergence criterion for all parameters which failed to meet the convergence criterion at the last iteration. Clearly a small number of parameters with scores close to the criterion suggests near-convergence.

### Author(s)

Heather Turner

### References

Vargas, M, Crossa, J, van Eeuwijk, F, Sayre, K D and Reynolds, M P (2001). Interpreting treatment by environment interaction in agronomy trials. Agronomy Journal 93, 949–960.

### See Also

`gnm`

### Examples

    ##  Fit a "double UNIDIFF" model with low iterMax for illustration!
    set.seed(1)
    doubleUnidiff <- gnm(Freq ~ election*vote + election*class*religion +
                         Mult(Exp(election), religion:vote) +
                         Mult(Exp(election), class:vote),
                         family = poisson, data = cautres, iterMax = 10)
    exitInfo(doubleUnidiff)

[Package gnm version 1.0-8 Index]