A navigation ontology for outdoor-indoor space: (work-in-progress)

Abstract

People's daily lives are situated in both outdoor and indoor space. However, traditional GIS focuses only on outdoor space. Therefore, research on providing a unified model of the two spaces and making the navigation between and within them seamless is important. This study lays the ontological and formal foundations for a model of navigation in a unified outdoor and indoor space. Four levels of ontologies are under construction: upper ontology (being constructing by using and revising those concepts introduced in previous work), domain ontologies (structure ontologies of spaces), navigation task ontology, and application ontologies.