Abstract
Many standardization organizations are working for syntactic-level of the interoperability. At the same time, semantic interoperability must be considered as a heterogeneous condition and also very diversified with a large-volume data set. Ontological information such as terminology, classification schema, data model, and gazetteer has been developed for earth observation data integration. This is a very challenging method because collaboration or cooperation with scientists of different disciplines is essential to its reliability. A semantic MediaWiki is applied to register and update ontological information as a semantic network dictionary as well as the data model registry system, which promises to be a useful tool for specialists. Constructed ontology is used for the reference information required for interoperability. For integration of earth observation data, it is essential to clarify ontological information, such as same-as, contain, near, part-of, is-on, consist-of, and so on.
