In the objects-attributes matrix (G, M; I ), objects are
concepts from both ontologies (see Sections III and IV).
The attributes include seven concepts: tour date, arrival time,
total tour hours, transportation mode, travel distance, costs,
and activities. These concepts are extracted from the tourism
literature that discusses criteria to select attractions considering both the perspectives of the tourists and the tourism
information providers (see Appendix C for the literature used
for this study). Of all criteria used, these seven concepts
are the most frequently used. They consider the perspective
of both tourists and tourism information providers and thus
are used as the reference concepts to map between the two
ontologies.