an interval variable to be converted to fuzzy set score.
fullin
scalar indicating full membership.
fullout
scalar indicating the full non-membership.
crossover
scalar indicating cross over point.
infz
fuzzy set score of full membership, corresponding to fullin.
outfz
fuzzy set score of full non-membership, corresponding to fullout.
details
logical.
Value
When details is TRUE, it the result is a data frame. Otherwise, the
value is a numeric vector of fuzzy set score.
Details
Usually, the sum of infz and outfz should be 1. In Ragin (2008), infz
is 0.953 and outfz is 0.047, which lead to the log odd of membership
being (proximitely) 3.0 and -3.0.
References
Ragin, Charles C. 2008. "Redesigning social inquiry: fuzzy sets and
beyond." Chapter 5. Chicago: University of Chicago Press.