Neighbourhood of Knowledge States

Computes the neighbourhood of a knowledge state.

kneighbourhood(kst, state)

Arguments

kst	An R object of class kstructure.
state	An R object of class set.

Details

The neighbourhood of a knowledge state is the set of all those states which have a symmetric seu difference of 1.

Value

A set of sets containing the neighbourhood of state

References

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

See also

kfringe, kstructure, set

Examples

kst <- kstructure(set(set(), set("c"), set("a","b"), set("b","c"), 
   set("c","d"), set("d","e"), set("a","b","c"), set("b","c","d"), 
   set("c","d","e"), set("a","b","c","d"), set("a","b","d","e"), 
   set("b","c","d","e"), set("a","b","c","d","e")))

# inner fringe
kneighbourhood(kst, set("c","d","e"))
#> {{"c", "d"}, {"d", "e"}, {"b", "c", "d", "e"}}