A System for Semantic Integration of Geologic Maps via Ontologies ∗

This paper describes a prototype system for registering geologic data sets through ontologies to assist in integrating and querying heterogeneous geologic data sets. The system consists of three components: an o tology repository , thedata set registration, andontology-aware applications . User-defined ontologies in OWL are saved and used by the system. Each data set must be registered before it becomes available, and the registration semi-automatically generates a mapping from data sets to ontologies. The mapping between data sets and ontologies are used by applications to explore and extract information from the data set.