| stop.methods {twang} | R Documentation |
A list of stop.method objects built into the twang package
that encode rules for selecting propensity score weights
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
twang package has functions es.stat,
ks.stat, and strata.stat. The user may
implement their own.metric function and summarizes them into a single number.
twang currently utilizes mean and max
for rule.summaryTRUE then ps will try to
optimize the weights directly rather than utilizing gbmbal.stat should
handle missing values. Current options are "level",
"exclude", or "lowest"stop.methods for labeling the resulting weights
In addition, the object must have class(mystopmethod) == "stop.method"