Database models for infinite and indefinite temporal information
Information Systems
Selected papers of the 9th annual ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
A constrant-based spatial extension to SQL
Proceedings of the 6th ACM international symposium on Advances in geographic information systems
Maintaining knowledge about temporal intervals
Communications of the ACM
On the expressiveness of linear-constraint query languages for spatial databases
Theoretical Computer Science
Introduction to constraint databases
Introduction to constraint databases
Toward the semantic geospatial web
Proceedings of the 10th ACM international symposium on Advances in geographic information systems
Qualitative and Topological Relationships in Spatial Databases
SSD '93 Proceedings of the Third International Symposium on Advances in Spatial Databases
IEEE Transactions on Knowledge and Data Engineering
IEEE Internet Computing
A framework to support spatial, temporal and thematic analytics over semantic web data
A framework to support spatial, temporal and thematic analytics over semantic web data
SemSOS: Semantic sensor Observation Service
CTS '09 Proceedings of the 2009 International Symposium on Collaborative Technologies and Systems
Spatially-augmented knowledgebase
ISWC'07/ASWC'07 Proceedings of the 6th international The semantic web and 2nd Asian conference on Asian semantic web conference
Semantics and complexity of SPARQL
ISWC'06 Proceedings of the 5th international conference on The Semantic Web
Atlas: Storing, updating and querying RDF(S) data on top of DHTs
Web Semantics: Science, Services and Agents on the World Wide Web
YAGO2: exploring and querying world knowledge in time, space, context, and many languages
Proceedings of the 20th international conference companion on World wide web
EP-SPARQL: a unified language for event processing and stream reasoning
Proceedings of the 20th international conference on World wide web
Building a global normalized ontology for integrating geographic data sources
Computers & Geosciences
A semantically enabled service architecture for mashups over streaming and stored data
ESWC'11 Proceedings of the 8th extended semantic web conference on The semanic web: research and applications - Volume Part II
SGST: an open source semantic geostreaming toolkit
Proceedings of the 2nd ACM SIGSPATIAL International Workshop on GeoStreaming
TELEIOS: a database-powered virtual earth observatory
Proceedings of the VLDB Endowment
YAGO2: A spatially and temporally enhanced knowledge base from Wikipedia
Artificial Intelligence
Building virtual earth observatories using ontologies and linked geospatial data
RR'12 Proceedings of the 6th international conference on Web Reasoning and Rule Systems
Strabon: a semantic geospatial DBMS
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
On the diversity and availability of temporal information in linked open data
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
The spatiotemporal RDF store strabon
SSTD'13 Proceedings of the 13th international conference on Advances in Spatial and Temporal Databases
Continuum: a spatiotemporal data model to represent and qualify filiation relationships
Proceedings of the 4th ACM SIGSPATIAL International Workshop on GeoStreaming
Enabling the geospatial Semantic Web with Parliament and GeoSPARQL
Semantic Web - On linked spatiotemporal data and geo-ontologies
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RDF will often be the metadata model of choice in the Semantic Sensor Web. However, RDF can only represent thematic metadata and needs to be extended if we want to model spatial and temporal information. For this purpose, we develop the data model stRDF and the query language stSPARQL. stRDF is a constraint data model that extends RDF with the ability to represent spatial and temporal data. stSPARQL extends SPARQL for querying stRDF data. In our extension to RDF, we follow the main ideas of constraint databases and represent spatial and temporal objects as quantifier-free formulas in a first-order logic of linear constraints. Thus an important contribution of stRDF is to bring to the RDF world the benefits of constraint databases and constraint-based reasoning so that spatial and temporal data can be represented in RDF using constraints.