Sorites paradox and vague geographies
Fuzzy Sets and Systems - Special issue on Uncertainty in geographic information systems and spatial data
The Paradoxical Success of Fuzzy Logic
IEEE Expert: Intelligent Systems and Their Applications
Fiat and Bona Fide Boundaries: Towards on Ontology of Spatially Extended Objects
COSIT '97 Proceedings of the International Conference on Spatial Information Theory: A Theoretical Basis for GIS
Reasoning about Cardinal Directions Using Grids as Qualitative Geographic Coordinates
COSIT '99 Proceedings of the International Conference on Spatial Information Theory: Cognitive and Computational Foundations of Geographic Information Science
Representing Simple Trajectories as Oriented Curves
Proceedings of the Twelfth International Florida Artificial Intelligence Research Society Conference
SSD '97 Proceedings of the 5th International Symposium on Advances in Spatial Databases
Uncertainty Management for Spatial Data in Databases: Fuzzy Spatial Data Types
SSD '99 Proceedings of the 6th International Symposium on Advances in Spatial Databases
Qualitative Spatial Representation and Reasoning Techniques
KI '97 Proceedings of the 21st Annual German Conference on Artificial Intelligence: Advances in Artificial Intelligence
A Graded Approach to Directions between Extended Objects
GIScience '02 Proceedings of the Second International Conference on Geographic Information Science
Neighborhood restrictions in geographic IR
SIGIR '07 Proceedings of the 30th annual international ACM SIGIR conference on Research and development in information retrieval
Fuzzy region connection calculus: Representing vague topological information
International Journal of Approximate Reasoning
Determining geographic representations for arbitrary concepts at query time
Proceedings of the first international workshop on Location and the web
Modelling vague places with knowledge from the Web
International Journal of Geographical Information Science - Digital Gazetteer Research
Spatial reasoning in a fuzzy region connection calculus
Artificial Intelligence
Adaptable path planning in regionalized environments
COSIT'09 Proceedings of the 9th international conference on Spatial information theory
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The representation of geographical objects with vague or fuzzy boundaries still poses a challenge to current geographical information systems. The paper presents a geometric account to deal with spatial vagueness. This approach is based on ideas of the theory of supervaluation. To capture vague spatial information current geographical information systems mainly employ fuzzy set theory and fuzzy logic. The proposed geometric theory is contrasted with fuzzy theories regarding the representation of vague spatial objects and the inferences that can be drawn about the objects. Opposed to fuzzy theories, the proposed theory does not rely on a numerical representation to model spatial vagueness, but is still compatible with it. Therefore, the approach is able to support spatial databases in qualitative spatial inferences.