Computes the neighbourhood of a knowledge state.
kneighbourhood(kst, state)A set of sets containing the neighbourhood of state
An R object of class kstructure.
An R object of class set.
The neighbourhood of a knowledge state is the set of all those states which have a symmetric seu difference of 1.
Doignon, J.-P., Falmagne, J.-C. (1999) Knowledge Spaces. Heidelberg: Springer Verlag.
kfringe, kstructure, set
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"))
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