CROEQS: contemporaneous role ontology-based expanded query search
Stijn Vandamme · Ghent University Academic Bibliography (Ghent University) · 2009
To make full use of a multimedia database with annotated items, the possibility of searching the database is primordial.The traditional approach is to build a search engine based on textual metadata.However, the metadata of relevant items to a query may describe the content on a different conceptual level as the query formulation.To address this problem, we present CROEQS, a semantically enhanced search engine.It allows the user to query the annotated persons not only on their name, but also on their roles and affiliations at the time.We also present an ontology used to expand such queries: it allows us to semantically represent the domain knowledge on people fulfilling a role during a temporal interval in general, and politicians holding a political office specifically.The use of such a semantic clause in a query significantly filters the result set, allowing for targeted search, at the cost of a performance penalty.