Ontology enrichment and indexing process

Within the framework of Web information retrieval, this paper presents some methods to improve an indexing process which uses terminology oriented ontologies specific to a field of knowledge. Thus, techniques to enrich ontologies using specialization processes are proposed in order to manage pages which have to be indexed but which are currently rejected by the indexing process. This ontology specialization process is made supervised to offer to the expert of the domain a decision-making aid concerning its field of application. The proposed enrichment is based on some heuristics to manage the specialization of the ontology and which can be controlled using a graphic tool for validation.