
290 ◾ Michael Elhadad, David Gabay, and Yael Netzer
below 12.4%, and did not exceed 38.2% for any pair of classes. Overlap between
two categories is possible. For example, a movie can belong both to action and
drama genres. We trained and tested only on movies that belonged to one genre of
pairs tested.
10.6.5 Ontology Classification Fitness: Conclusions
Our method of translating tests of ontology properties into tests on an aligned
textual corpus allowed us to quantitatively assess a complex property of the ontol-
ogy: can it be used to cluster search results in a manner that would be recognized
by experts in the domain? We translated this