R: Auxiliary for Controlling BRGLM Fitting

brglm.control {brglm} | R Documentation

## Auxiliary for Controlling BRGLM Fitting

### Description

Auxiliary function as user interface for `brglm` fitting. Typically only used when calling `brglm` or `brglm.fit`.

### Usage

    brglm.control(br.epsilon = 1e-08, br.maxit = 100, br.trace=FALSE,
                  br.consts = NULL, ...)

### Arguments

`br.epsilon` | positive convergence tolerance for the iteration described in `brglm.fit`.
`br.maxit` | integer giving the maximum number of iterations for the iteration in `brglm.fit`.
`br.trace` | logical indicating if output should be prooduced for each iteration.
`br.consts` | a (small) positive constant or a vector of such.
`...` | further arguments passed to or from other methods.

### Details

If `br.trace=TRUE` then for each iteration the iteration number and the current value of the modified scores is `cat`'ed. If `br.consts` is specified then `br.consts` is added to the original binomial counts and `2*br.consts`. Then the model is fitted to the adjusted data to provide starting values for the iteration in `brglm.fit`. If `br.consts = NULL` (default) then `brglm.fit` adjusts the responses and totals by "number of parameters"/"number of observations" and twice that, respectively.

### Value

A list with the arguments as components.

### Author(s)

Ioannis Kosmidis, i.kosmidis@ucl.ac.uk

### References

Kosmidis, I. (2007). Bias reduction in exponential family nonlinear models. PhD Thesis, Department of Statistics, University of Warwick.

### See Also

`brglm.fit`, the fitting procedure used by `brglm`.

[Package brglm version 0.5-9 Index]