The index builds on the number of rating matches between pairs of constructs. It is the relation between the total number of matches and the possible number of matches.
indexBieri(x, deviation = 0)
Maximal difference between ratings to be considered a match
CAVEAT: The Bieri index will change when constructs are reversed.
List of class
grid: The grid used to calculate the index
deviation The deviation parameter.
matches_max Maximum possible number of matches across constructs.
matches Total number of matches across constructs.
constructs: Matrix with no. of matches for constructs.
bieri: Bieri index (= matches / matches_max)
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m <- indexBieri(boeker) # several output options print(m) print(m, output = "IC") # construct matches # extract the matrix of matches m$constructs # CAVEAT: Bieri's index changes when constructs are reversed nr <- nrow(boeker) l <- replicate(1000, swapPoles(boeker, sample(nr, sample(nr, 1)))) bieri <- sapply(l, function(x) indexBieri(x)$bieri) hist(bieri, breaks = 50) abline(v = mean(bieri), col = "red", lty = 2)
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