model.end {Zelig}R Documentation

Cleaning up after optimization

Description

The model.end function creates a list of regression output from optim output. The list includes coefficients (from the optim par output), a variance-covariance matrix (from the optim Hessian output), and any terms, contrasts, or xlevels (from the model frame). Use model.end after calling optim, but before assigning a class to the regression output.

Usage

model.end(res, mf)

Arguments

res the output from optim or another fitting-algorithm
mf the model frame output by model.frame

Value

A list of regression output, including:

coefficients the optimized parameters
variance the variance-covariance matrix (the negative inverse of the Hessian matrix returned from the optimization procedure)
terms the terms object. See terms.object for more information
... additional elements passed from res

normal-bracket37bracket-normal

Author(s)

Kosuke Imai <kimai@princeton.edu>; Gary King <king@harvard.edu>; Olivia Lau <olau@fas.harvard.edu>; Ferdinand Alimadhi <falimadhi@iq.harvard.edu>

See Also

The full Zelig manual at http://gking.harvard.edu/zelig for examples.


[Package Zelig version 2.8-4 Index]