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data linked data semantic web data management database research projects semantic data mining resource description framework data management system semantic technology sensor research european union data stream query rdf dataset big data sparql sql ontology machine learning sciql sensor network data processing algorithms query language metadata rdfs monetdb database management system linked history linked views distributed computing entity resolution twitter message stream entity profiles performance web mining twitter classification ambiguity estimation design dbms world wide web web information databases data cube data quality data provisioning social network benchmarking data cell web data management project management services text mining image model time series visualization interface front end linked open dataset query optimization cytomics automation lab experiments mapreduce framework mapreduce nonmonotonic reasoning reasoning knowledge structure access control inference entity proles disambiguation twitter seman d similar measure time-series cloud computing query processing gpgpu i/o bottleneck relational database sql query language apple iphone key semantic annotation data volume datawarehouse database system robustness traffic scene adaboost traffic wireless sensor network sensor data temperature oceanographic data ontogen image data