Toward principles for the design of ontologies used for knowledge sharing
International Journal of Human-Computer Studies - Special issue: the role of formal ontology in the information technology
The importance of link evidence in Wikipedia
ECIR'08 Proceedings of the IR research, 30th European conference on Advances in information retrieval
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Traditionally, domain ontologies are created manually, based on human experts' views on the classes and relations of the domain at hand. We present ongoing work on two approaches to the automatic construction of ontologies from a flat database of records, and compare them to a manually constructed ontology. The latter CIDOC-CRM ontology focusses on the organisation of classes and relations. In contrast, the first automatic method, based on machine learning, focuses on the mutual predictiveness between classes, while the second automatic method, created with the aid of Wikipedia, stresses meaningful relations between classes. The three ontologies show little overlap; their differences illustrate that a different focus during ontology construction can lead to radically different ontologies. We discuss the implications of these differences, and argue that the two alternative ontologies may be useful in higher-level information systems such as search engines.