OntOAIr: A Method to Construct Lightweight Ontologies from Document Collections

Ontologies are key components in the development of the semantic Web, as they provide a shared understanding of a domain. However, acquiring the knowledge to construct ontologies is a costly task that requires much time and many resources. This work describes OntOAIr, a semi-automatic construction method of lightweight ontologies from document collections. The OntOAIr method uses simplified representations of documents, an adaptation of the frequent item set-based hierarchical clustering algorithm (FIHC), and ontological engineering techniques. We present experimental result sand we describe applications that use the constructed ontologies.