Inferential Distance (Touretzky)
Class1 is closer to class2 than to class3 iff class1 has an inference path through class2 to class3.
Note: defines only a partial ordering.
Inheritance for feature f gives the set of competing values such that each value v
- Has been derived from a class c in f’s class hierarchy and
- v is not contradicted by any class that has a shorter inferential distance to c than f does.