Proceedings of the twenty-sixth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
A survey of trust in computer science and the Semantic Web
Web Semantics: Science, Services and Agents on the World Wide Web
Update exchange with mappings and provenance
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
Annotated XML: queries and provenance
Proceedings of the twenty-seventh ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
On the expressiveness of implicit provenance in query and update languages
ACM Transactions on Database Systems (TODS)
A Fuzzy Semantics for the Resource Description Framework
Uncertainty Reasoning for the Semantic Web I
Containment of conjunctive queries on annotated relations
Proceedings of the 12th International Conference on Database Theory
Perm: Processing Provenance and Data on the Same Data Model through Query Rewriting
ICDE '09 Proceedings of the 2009 IEEE International Conference on Data Engineering
Querying Trust in RDF Data with tSPARQL
ESWC 2009 Heraklion Proceedings of the 6th European Semantic Web Conference on The Semantic Web: Research and Applications
Semantics and complexity of SPARQL
ACM Transactions on Database Systems (TODS)
Querying for provenance, trust, uncertainty and other meta knowledge in RDF
Web Semantics: Science, Services and Agents on the World Wide Web
ACM Transactions on Computational Logic (TOCL)
Query Evaluation on Probabilistic RDF Databases
WISE '09 Proceedings of the 10th International Conference on Web Information Systems Engineering
Web Semantics: Science, Services and Agents on the World Wide Web
Foundations of SPARQL query optimization
Proceedings of the 13th International Conference on Database Theory
Proceedings of the 2010 ACM SIGMOD International Conference on Management of data
On Provenance of Queries on Semantic Web Data
IEEE Internet Computing
Provenance for aggregate queries
Proceedings of the thirtieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Querying semantic web data with SPARQL
Proceedings of the thirtieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
A general framework for representing, reasoning and querying with annotated Semantic Web data
Web Semantics: Science, Services and Agents on the World Wide Web
ISWC'12 Proceedings of the 11th international conference on The Semantic Web - Volume Part I
Editorial: OPQL: Querying scientific workflow provenance at the graph level
Data & Knowledge Engineering
TripleProv: efficient processing of lineage queries in a native RDF store
Proceedings of the 23rd international conference on World wide web
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We show that the evaluation of SPARQL algebra queries on various notions of annotated RDF graphs can be seen as particular cases of the evaluation of these queries on RDF graphs annotated with elements of so-called spm-semirings. Spm-semirings extend semirings, used for positive relational algebra queries on annotated relational data, with a new operator to capture the semantics of the non-monotone SPARQL operator OPTIONAL. Furthermore, spm-semiring-based annotations ensure that desired SPARQL query equivalences hold when querying annotated RDF. In addition to introducing spm-semirings, we study their properties and provide an alternative characterization of these structures in terms of semirings with an embedded boolean algebra (or seba-structure for short). This characterization allows to construct spm-semirings and to identify a universal object in the class of spm-semirings. Finally, we show that this universal object provides a concise provenance representation and can be used to evaluate SPARQL queries on arbitrary spm-semiring-annotated RDF graphs.