Evaluating ontological decisions with OntoClean
Communications of the ACM - Ontology: different ways of representing the same concept
Supporting ontological analysis of taxonomic relationships
Data & Knowledge Engineering - ER2000
Landscape Features, Standards, and Semantics in U.S. National Topographic Mapping Databases
GEOWS '09 Proceedings of the 2009 International Conference on Advanced Geographic Information Systems & Web Services
Towards a Semantic Representation of Raster Spatial Data
GeoS '09 Proceedings of the 3rd International Conference on GeoSpatial Semantics
Two types of hierarchies in geospatial ontologies
GeoS'07 Proceedings of the 2nd international conference on GeoSpatial semantics
Ontologies of geographic information
International Journal of Geographical Information Science
Linked Data
Ontology design patterns for semantic web content
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
Geospatial semantics: why, of what, and how?
Journal on Data Semantics III
Geospatial semantics and linked spatiotemporal data --Past, present, and future
Semantic Web - On linked spatiotemporal data and geo-ontologies
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The development of linked data on the World-Wide Web provides the opportunity for the U.S. Geological Survey USGS to supply its extensive volumes of geospatial data, information, and knowledge in a machine interpretable form and reach users and applications that heretofore have been unavailable. To pilot a process to take advantage of this opportunity, the USGS is developing an ontology for The National Map and converting selected data from nine research test areas to a Semantic Web format to support machine processing and linked data access. In a case study, the USGS has developed initial methods for legacy vector and raster formatted geometry, attributes, and spatial relationships to be accessed in a linked data environment maintaining the capability to generate graphic or image output from semantic queries. The description of an initial USGS approach to developing ontology, linked data, and initial query capability from The National Map databases is presented.