An extended relational algebra with control over duplicate elimination
PODS '82 Proceedings of the 1st ACM SIGACT-SIGMOD symposium on Principles of database systems
SEQ: A Model for Sequence Databases
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Tribeca: A Stream Database Manager for Network Traffic Analysis
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
StreaMon: an adaptive engine for stream query processing
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Exploiting predicate-window semantics over data streams
ACM SIGMOD Record
Window-aware load shedding for aggregation queries over data streams
VLDB '06 Proceedings of the 32nd international conference on Very large data bases
Monitoring streams: a new class of data management applications
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Query Results Clustering by Extending SPARQL with CLUSTER BY
OTM '09 Proceedings of the Confederated International Workshops and Posters on On the Move to Meaningful Internet Systems: ADI, CAMS, EI2N, ISDE, IWSSA, MONET, OnToContent, ODIS, ORM, OTM Academy, SWWS, SEMELS, Beyond SAWSDL, and COMBEK 2009
A flexible framework for multisensor data fusion using data stream management technologies
Proceedings of the 2009 EDBT/ICDT Workshops
An execution environment for C-SPARQL queries
Proceedings of the 13th International Conference on Extending Database Technology
Querying RDF streams with C-SPARQL
ACM SIGMOD Record
Enabling ontology-based access to streaming data sources
ISWC'10 Proceedings of the 9th international semantic web conference on The semantic web - Volume Part I
EP-SPARQL: a unified language for event processing and stream reasoning
Proceedings of the 20th international conference on World wide web
Retractable complex event processing and stream reasoning
RuleML'2011 Proceedings of the 5th international conference on Rule-based reasoning, programming, and applications
A native and adaptive approach for unified processing of linked streams and linked data
ISWC'11 Proceedings of the 10th international conference on The semantic web - Volume Part I
Optimising ontology stream reasoning with truth maintenance system
Proceedings of the 20th ACM international conference on Information and knowledge management
SGST: an open source semantic geostreaming toolkit
Proceedings of the 2nd ACM SIGSPATIAL International Workshop on GeoStreaming
Incremental reasoning on streams and rich background knowledge
ESWC'10 Proceedings of the 7th international conference on The Semantic Web: research and Applications - Volume Part I
Sparkwave: continuous schema-enhanced pattern matching over RDF data streams
Proceedings of the 6th ACM International Conference on Distributed Event-Based Systems
Odysseus: a highly customizable framework for creating efficient event stream management systems
Proceedings of the 6th ACM International Conference on Distributed Event-Based Systems
SensorStream: a semantic real-time stream management system
International Journal of Ad Hoc and Ubiquitous Computing
Ranking RDF with provenance via preference aggregation
EKAW'12 Proceedings of the 18th international conference on Knowledge Engineering and Knowledge Management
LODStats --- an extensible framework for high-performance dataset analytics
EKAW'12 Proceedings of the 18th international conference on Knowledge Engineering and Knowledge Management
SRBench: a streaming RDF/SPARQL benchmark
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
Linked stream data processing engines: facts and figures
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part II
Distributed reasoning on semantic data streams
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part II
Semantics for the Internet of Things: Early Progress and Back to the Future
International Journal on Semantic Web & Information Systems
Secure federation of semantic information services
Decision Support Systems
Ontology patterns for complex activity modelling
RuleML'13 Proceedings of the 7th international conference on Theory, Practice, and Applications of Rules on the Web
Semantic-based QoS management in cloud systems: Current status and future challenges
Future Generation Computer Systems
Stream reasoning and complex event processing in ETALIS
Semantic Web - On linked spatiotemporal data and geo-ontologies
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A lot of work has been done in the area of data stream processing. Most of the previous approaches regard only relational or XML based streams but do not cover semantically richer RDF based stream elements. In our work, we extend SPARQL, the W3C recommendation for an RDF query language, to process RDF data streams. To describe the semantics of our enhancement, we extended the logical SPARQL algebra for stream processing on the foundation of a temporal relational algebra based on multi-sets and provide an algorithm to transform SPARQL queries to the new extended algebra. For each logical algebra operator, we define executable physical counterparts. To show the feasibility of our approach, we implemented it within our ODYSSEUS framework in the context of wind power plant monitoring.