imbspace {cem}R Documentation

Diagnostic tool for CEM

Description

Diagnostic tools for CEM

Usage

imbspace(obj, data, depth = 1, L1.breaks = NULL, 
plot = TRUE, fixed = NULL, minimal = 1, maximal = 6,
M=250, raw.profile=NULL) 

Arguments

obj an object of class cem.match
data the original data.
depth if 1, relaxes up to dropping one var, if 2 relaxes (up to dropping) two vars, etc.
L1.breaks list of cutpoints for the calculation of the L1 measure.
plot plot the space of solutions?
fixed vector of variable names which will not be relaxed.
minimal the minimal number of intervals acceptable after relaxation. Should be a nameed list of positive integers or if a number, this is applied to all variables.
maximal the maximal number of intervals acceptable after relaxation. Should be a nameed list of positive integers or if a number, this is applied to all variables.
M number of possible random coarsening for the L1 measure
raw.profile and object of class L1profile. If passed, the L1.breaks are ignored.

Details

This is a diagnostic tool to help the user in the search of different choices of coarsenings. The algorithm tries all possible combination of coarsenings into intervals between minimal and maximal one variable at time, for pairs, triplets, etc depending on the value of depth.

Calling directly plot on the output of imbspace has the same effect of calling directly imbspace.plot.

Value

val an invisible object of class imbalance.space.

Author(s)

Stefano Iacus, Gary King, and Giuseppe Porro

References

Stefano Iacus, Gary King, Giuseppe Porro, ``Matching for Casual Inference Without Balance Checking: Coarsened Exact Matching,'' http://gking.harvard.edu/files/abs/cem-abs.shtml

See Also

imbspace.plot


[Package cem version 1.0.142 Index]