qi: Generic Method for Computing Quantities of Interest
In IQSS/Zelig4: Everyone's Statistical Software

Description Usage Arguments Value Note Author(s) Examples

The qi function is used by developers to simulated quantities of interest. This method, as a result, is the most significant method of any Zelig statistical model.

1	qi(obj, x = NULL, x1 = NULL, y = NULL, num, param = NULL)

`obj`	a `zelig` object
`x`	a `setx` object or NULL
`x1`	an optional `setx` object
`y`	this parameter is reserved for simulating average treatment effects, though this feature is currentlysupported by only a handful of models
`num`	an integer specifying the number of simulations to compute
`param`	a parameters object

a list of key-value pairs specifying pairing titles of quantities of interest with their simulations

Run example(qi) to see a trivial version of

Matt Owen mowen@iq.harvard.edu

qi.some.model <- function(obj, x=NULL, x1=NULL, y=NULL, param=NULL) {
  list(
       "Expected Values: E(Y|X)" = NA,
       "Predicted Values: Y|X"   = NA
       )
}