exitInfo | R Documentation |

A utility function to print information on final iteration in
`gnm`

fit, intended for use when `gnm`

has not converged.

exitInfo(object)

`object` |
a |

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.

Heather Turner

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.

`gnm`

## 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)

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