Index structures and algorithms for querying distributed RDF repositories
Proceedings of the 13th international conference on World Wide Web
Proceedings of the 17th international conference on World Wide Web
RDF-3X: a RISC-style engine for RDF
Proceedings of the VLDB Endowment
SP^2Bench: A SPARQL Performance Benchmark
ICDE '09 Proceedings of the 2009 IEEE International Conference on Data Engineering
Executing SPARQL Queries over the Web of Linked Data
ISWC '09 Proceedings of the 8th International Semantic Web Conference
LUBM: A benchmark for OWL knowledge base systems
Web Semantics: Science, Services and Agents on the World Wide Web
Data summaries for on-demand queries over linked data
Proceedings of the 19th international conference on World wide web
Querying distributed RDF data sources with SPARQL
ESWC'08 Proceedings of the 5th European semantic web conference on The semantic web: research and applications
Linked data query processing strategies
ISWC'10 Proceedings of the 9th international semantic web conference on The semantic web - Volume Part I
Apples and oranges: a comparison of RDF benchmarks and real RDF datasets
Proceedings of the 2011 ACM SIGMOD International Conference on Management of data
What are real SPARQL queries like?
Proceedings of the International Workshop on Semantic Web Information Management
Characteristic sets: Accurate cardinality estimation for RDF queries with multiple joins
ICDE '11 Proceedings of the 2011 IEEE 27th International Conference on Data Engineering
Semantics and optimization of the SPARQL 1.1 federation extension
ESWC'11 Proceedings of the 8th extended semantic web conference on The semanic web: research and applications - Volume Part II
ANAPSID: an adaptive query processing engine for SPARQL endpoints
ISWC'11 Proceedings of the 10th international conference on The semantic web - Volume Part I
DBpedia SPARQL benchmark: performance assessment with real queries on real data
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
Query generation for semantic datasets
Proceedings of the seventh international conference on Knowledge capture
SPARQL Endpoint Metrics for Quality-Aware Linked Data Consumption
Proceedings of International Conference on Information Integration and Web-based Applications & Services
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The distributed and heterogeneous nature of Linked Open Data requires flexible and federated techniques for query evaluation. In order to evaluate current federation querying approaches a general methodology for conducting benchmarks is mandatory. In this paper, we present a classification methodology for federated SPARQL queries. This methodology can be used by developers of federated querying approaches to compose a set of test benchmarks that cover diverse characteristics of different queries and allows for comparability. We further develop a heuristic called SPLODGE for automatic generation of benchmark queries that is based on this methodology and takes into account the number of sources to be queried and several complexity parameters. We evaluate the adequacy of our methodology and the query generation strategy by applying them on the 2011 billion triple challenge data set.