Automatic Classification of

Ontology, which derives from philosophy, is a discipline of Philosophy that deals with existence. In recent years, it has been widely used in artificial intelligence and computer science, mainly representing, sharing and reusing knowledge. So it's significant to introduce ontology into Geographic Information Science for the implementation of the geographical information representation, sharing and reuse. Based on analyses of geographical information taxonomy, after explaining the concept of ontology, this paper expatiates a method of building Geographical Information Ontology and a process of classifying geographical information concepts. In classification, it places emphasis on using ontology for method, starting from property of concepts, analysing the property of the concepts sufficiently, working out the priorities of ontological properties, and carries out the classification of concepts based on ontological properties