Visualizing the Uncertainty of Urban Ontology Terms

The concept of exurban is an example of a term likely to find its way into urban development ontologies. Many such terms are uncertain since there is no consensus of the exact definition of e.g. the boundary of exurbanization. In this research we focus on visualizing the spatial implications of the uncertainty in two existing definitions of exurban boundaries using empirical GIS data in Delaware County, Ohio, U.S. We argue that exurban boundaries are not crisp, hence, a series of fuzzy-set theory membership functions help define the uncertainty of the empirical exurban boundaries.