Domain of Knowledge Structures or Bases

Computes the domain of knowledge structures or bases.

kdomain(x)

Arguments

x	An R object of class kstructure, kbase, or kfamset.

Details

A domain is a set of questions or items representing a field of knowledge.

Value

A set of items, each representing one question of the knowledge domain.

References

Doignon, J.-P., Falmagne, J.-C. (1999) Knowledge Spaces. Heidelberg: Springer Verlag.

See also

kstructure, kbase, kfamset, set

Examples

kst <- kstructure(set(set("a"), set("a","b"), set("a","c"), set("d","e"), 
   set("a","b","d","e"), set("a","c","d","e"), set("a","b","c","d","e")))
kdomain(kst)
#> {"a", "b", "c", "d", "e"}