suffnec: Produces a sufficiency and necessity matrix
Description
creates a matrix of the sufficiency and necessity scores for a crisp set
or fuzzy set data frame.
Usage
suffnec(x, use = c("complete", "pairwise"))
"print"(x, digits = 3, ...)
Arguments
x
For coincide, x is a dataframe of crip set or fuzzy set data, which ranges from
0 to 1.
use
The method of handling missing data. "complete" means
listwise deletion and "pairwise" means pairwise deletion.
digits
a non-null value for 'digits' specifies the minimum
number of significant digits to be printed in values.
...
arguments passed to default method of print.
Value
A list of two matrixs of consistency score.
Details
In the terminology of set theory, if X is the sufficient condition of Y,
then the score of X should be consistently less or equal than that of
Y. Similarly, if X is the necessary condition of Y, then
the sore of X should be consistently greater or equal than that of
Y. The necessary score measures such consitency. The formulas can be found in Ragin(2006:297).
For crip set, sufficient score measures proportation of Y=1 given that X=1.
The neccessary score measures the proportation of X=1 given that Y=1.
References
Ragin, Charles C. 2006. "Set Relations in Social Research:Evaluating
Their Consistency and Coverage." Political Analysis 14 (3) : 291-310