Dataflow query execution in a parallel main-memory environment
Distributed and Parallel Databases - Selected papers from the first international conference on parallel and distributed information systems
Eddies: continuously adaptive query processing
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Adapting to source properties in processing data integration queries
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Lifting the burden of history from adaptive query processing
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
SPARQL basic graph pattern optimization using selectivity estimation
Proceedings of the 17th international conference on World Wide Web
RDF-3X: a RISC-style engine for RDF
Proceedings of the VLDB Endowment
Sideways Information Passing for Push-Style Query Processing
ICDE '08 Proceedings of the 2008 IEEE 24th International Conference on Data Engineering
ROX: run-time optimization of XQueries
Proceedings of the 2009 ACM SIGMOD International Conference on Management of data
Scalable join processing on very large RDF graphs
Proceedings of the 2009 ACM SIGMOD International Conference on Management of data
Executing SPARQL Queries over the Web of Linked Data
ISWC '09 Proceedings of the 8th International Semantic Web Conference
Data summaries for on-demand queries over linked data
Proceedings of the 19th international conference on World wide web
Object link structure in the semantic web
ESWC'10 Proceedings of the 7th international conference on The Semantic Web: research and Applications - Volume Part II
SIHJoin: querying remote and local linked data
ESWC'11 Proceedings of the 8th extended semantic web conference on The semantic web: research and applications - Volume Part I
Zero-knowledge query planning for an iterator implementation of link traversal based query execution
ESWC'11 Proceedings of the 8th extended semantic web conference on The semantic web: research and applications - Volume Part I
Database foundations for scalable RDF processing
RW'11 Proceedings of the 7th international conference on Reasoning web: semantic technologies for the web of data
ANAPSID: an adaptive query processing engine for SPARQL endpoints
ISWC'11 Proceedings of the 10th international conference on The semantic web - Volume Part I
FedBench: a benchmark suite for federated semantic data query processing
ISWC'11 Proceedings of the 10th international conference on The semantic web - Volume Part I
FedX: optimization techniques for federated query processing on linked data
ISWC'11 Proceedings of the 10th international conference on The semantic web - Volume Part I
Efficient distributed query processing for autonomous RDF databases
Proceedings of the 15th International Conference on Extending Database Technology
Foundations of traversal based query execution over linked data
Proceedings of the 23rd ACM conference on Hypertext and social media
SPARQL for a web of linked data: semantics and computability
ESWC'12 Proceedings of the 9th international conference on The Semantic Web: research and applications
Top-k linked data query processing
ESWC'12 Proceedings of the 9th international conference on The Semantic Web: research and applications
Enhancing source selection for live queries over linked data via query log mining
JIST'11 Proceedings of the 2011 joint international conference on The Semantic Web
Evaluating graph traversal algorithms for distributed SPARQL query optimization
JIST'11 Proceedings of the 2011 joint international conference on The Semantic Web
Freshening up while staying fast: towards hybrid SPARQL queries
EKAW'12 Proceedings of the 18th international conference on Knowledge Engineering and Knowledge Management
Improving the recall of live linked data querying through reasoning
RR'12 Proceedings of the 6th international conference on Web Reasoning and Rule Systems
SPLODGE: systematic generation of SPARQL benchmark queries for linked open data
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
Hybrid SPARQL queries: fresh vs. fast results
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
Querying Semantic Data on the Web?
ACM SIGMOD Record
Leveraging flexible data management with graph databases
First International Workshop on Graph Data Management Experiences and Systems
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Recently, processing of queries on linked data has gained attention. We identify and systematically discuss three main strategies: a bottom-up strategy that discovers new sources during query processing by following links between sources, a top-down strategy that relies on complete knowledge about the sources to select and process relevant sources, and a mixed strategy that assumes some incomplete knowledge and discovers new sources at run-time. To exploit knowledge discovered at run-time, we propose an additional step, explicitly scheduled during query processing, called correct source ranking. Additionally, we propose the adoption of stream-based query processing to deal with the unpredictable nature of data access in the distributed Linked Data environment. In experiments, we show that our implementation of the mixed strategy leads to early reporting of results and thus, more responsive query processing, while not requiring complete knowledge.