Zelig (version 3.5.5)

model.end: 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

See Also

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