bsmatch | R Documentation |
We propose a method based on the output of the function otmatch
. The method consists of choosing a unit from sample 2 to assign to a particular unit from sample 1.
bsmatch(object, Z2)
object |
A data.frame, output from the function |
Z2 |
A optional matrix, if we want to add some variables for the stratified balanced sampling step. |
All details of the method can be seen in the manuscript: Raphaël Jauslin and Yves Tillé (2021) <arXiv:2105.08379>.
A list of two objects, A data.frame that contains the matching and the normalized weights. The first two columns of the data.frame contain the unit identities of the two samples. The third column are the final weights. All remaining columns are the matching variables.
otmatch
, stratifiedcube
#--- SET UP N=1000 p=5 X=array(rnorm(N*p),c(N,p)) EPS= 1e-9 n1=100 n2=200 s1=sampling::srswor(n1,N) s2=sampling::srswor(n2,N) id1=(1:N)[s1==1] id2=(1:N)[s2==1] d1=rep(N/n1,n1) d2=rep(N/n2,n2) X1=X[s1==1,] X2=X[s2==1,] #--- HARMONIZATION re=harmonize(X1,d1,id1,X2,d2,id2) w1=re$w1 w2=re$w2 #--- STATISTICAL MATCHING WITH OT object = otmatch(X1,id1,X2,id2,w1,w2) #--- BALANCED SAMPLING out <- bsmatch(object)
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