stop.methods: Rules for selecting the propensity scores
Description
A list of stop.method objects built into the twang package
that encode rules for selecting propensity score weightsDetails
The ps function uses a stop.method object for instructions
on how to select the propensity score weights. twang has some
stop.method objects built in but the user may implement their own if
they wish and pass them to ps for it to optimize.
A valid stop.method object is a list that defines the following
[object Object],[object Object],[object Object],[object Object],[object Object]
In addition, the object must have class(mystopmethod) == "stop.method"