where n is the number of fvs in the ontology o and
sim(fvi, fvj) is the traditional cosine similarity
measure (Baeza-Yates & Ribeiro-Neto, 1999)
between the two vectors. A score of zero would
indicate that all FVs are unique, which is hardly
possible since the approach requires similarity
among the entities to be able to populate an
ontology. In general, we would like this score to be
as low as possible in order to discriminate the FVs,