ktrace function

Trace of Knowledge Structures

Computes the trace of knowledge structures.

ktrace(x, items)

Arguments

• x: An object of class kstructure.
• items: A set of items for which the trace is computed.

Details

The trace of a knowledge structure K on a set A is the substructure of the knowledge structure K on the set A, i.e., the substructure resulting from restricting the knowledge structure K to the items specified in A.

Returns

An object of class kstructure where each element represents one knowledge state of the knowledge structure on the item specified in items.

See Also

kstructure

References

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

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")))
ktrace(kst, items=set("c","d","e"))