Ontology-Matching (OM) Individual Heuristic
Observation: One or more fields of a record (called record-identifying fields) appears once and only once in a record.
If we can locate a value for the field or even just an indication that the value exists, we can count the number of such occurrences.
To choose record-identifying fields, we
- limit the number of fields to be at least 3 and no more than 20% of the number of sets of objects in the ontology;
- choose fields with a 1-1 correspondence to the entity of interest over fields functionally dependent on the entity of interest;
- choose keyword indicators over identifiable values.