The EGG/YOLK reliability hierarchy: semantic data integration using sorts with prototypes
CIKM '94 Proceedings of the third international conference on Information and knowledge management
Description logics for conceptual data modeling
Logics for databases and information systems
Incomplete Information: Rough Set Analysis
Incomplete Information: Rough Set Analysis
IJCAI'93 Proceedings of the 13th international joint conference on Artifical intelligence - Volume 1
Determining geographic representations for arbitrary concepts at query time
Proceedings of the first international workshop on Location and the web
Supervaluation semantics for an inland water feature ontology
IJCAI'05 Proceedings of the 19th international joint conference on Artificial intelligence
Journal of Visual Languages and Computing
Aggregations and constituents: geometric specification of multi-granular objects
Journal of Visual Languages and Computing
Architecture for a grounded ontology of geographic information
GeoS'07 Proceedings of the 2nd international conference on GeoSpatial semantics
Semantic categories underlying the meaning of 'place'
COSIT'07 Proceedings of the 8th international conference on Spatial information theory
Temporal vagueness, coordination and communication
ViC'09 Proceedings of the 2009 international conference on Vagueness in communication
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The paper examines ways in which the interpretation of spatial concepts is affected by vagueness and suggests mechanisms for taking account of this within spatial information systems. The theory of supervaluation semantics is explained and applied to the spatial domain and to particular problems of defining geographical concepts such as 'forest'.