nonbimatch

nonbimatch,distancematrix-method

nonbimatch-class

The nonbinmatch function creates the set of pairwise matches that minimizes
the sum of distances between the pairs.

Perform non-bipartite matching and matched randomization. A
"bipartite" matching utilizes two separate groups, e.g. smokers being
matched to nonsmokers or cases being matched to controls. A "non-bipartite"
matching creates mates from one big group, e.g. 100 hospitals being
randomized for a two-arm cluster randomized trial or 5000 children who
have been exposed to various levels of secondhand smoke and are being
paired to form a greater exposure vs. lesser exposure comparison. At the
core of a non-bipartite matching is a N x N distance matrix for N potential
mates. The distance between two units expresses a measure of similarity or
quality as mates (the lower the better). The 'gendistance()' and
'distancematrix()' functions assist in creating this. The 'nonbimatch()'
function creates the matching that minimizes the total sum of distances
between mates; hence, it is referred to as an "optimal" matching. The
'assign.grp()' function aids in performing a matched randomization. Note
bipartite matching can be performed using the prevent option in
'gendistance()'.

Cole Beck

nbpMatching

Functions for Optimal Non-Bipartite Matching

Bo Lu

Robert Greevy

nonbimatch function

<dl><dt>mdm</dt>
<dd>A distancematrix object. See the distancematrix function.</dd>
<dt>threshold</dt>
<dd>An numeric value, indicating the distance needed to create
chameleon matches.</dd>
<dt>precision</dt>
<dd>The largest value in the matrix will have at most this many
digits. The default value is six.</dd>
<dt>...</dt>
<dd>Additional arguments, these are not used.</dd></dl>

Arguments

Author

Nonbipartite Matching — nonbimatch

<dl>

<dt>mdm</dt>
<dd>A distancematrix object. See the distancematrix function.</dd>


<dt>threshold</dt>
<dd>An numeric value, indicating the distance needed to create
chameleon matches.</dd>


<dt>precision</dt>
<dd>The largest value in the matrix will have at most this many
digits. The default value is six.</dd>


<dt>...</dt>
<dd>Additional arguments, these are not used.</dd>

</dl>

nonbimatch: Nonbipartite Matching

Description

Usage

Value

Arguments

Author

Details

See Also

Examples