Artificial Intelligence - Special issue on knowledge representation
Temporal databases: theory, design, and implementation
Temporal databases: theory, design, and implementation
Managing historical semistructured data
Theory and Practice of Object Systems
Maintaining knowledge about temporal intervals
Communications of the ACM
The TSQL2 Temporal Query Language
The TSQL2 Temporal Query Language
Temporal Query Languages: A Survey
ICTL '94 Proceedings of the First International Conference on Temporal Logic
On the Semantics of Anonymous Identity and Reification
On the Move to Meaningful Internet Systems, 2002 - DOA/CoopIS/ODBASE 2002 Confederated International Conferences DOA, CoopIS and ODBASE 2002
A Data Model for Temporal XML Documents
DEXA '00 Proceedings of the 11th International Conference on Database and Expert Systems Applications
Observing Transaction-Time Semantics with TTXPath
WISE '01 Proceedings of the Second International Conference on Web Information Systems Engineering (WISE'01) Volume 1 - Volume 1
A Semantic Web Primer
Intelligent Information Integration For The Semantic Web (Lecture Notes in Computer Science)
Intelligent Information Integration For The Semantic Web (Lecture Notes in Computer Science)
Foundations of semantic web databases
PODS '04 Proceedings of the twenty-third ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
IEEE Transactions on Knowledge and Data Engineering
Temporal slicing in the evaluation of XML queries
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Indexing temporal XML documents
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
ESWC'05 Proceedings of the Second European conference on The Semantic Web: research and Applications
Conceptual Modeling: Foundations and Applications
Representing and querying validity time in RDF and OWL: a logic-based approach
ISWC'10 Proceedings of the 9th international semantic web conference on The semantic web - Volume Part I
Representing and querying validity time in RDF and OWL: A logic-based approach
Web Semantics: Science, Services and Agents on the World Wide Web
RR'13 Proceedings of the 7th international conference on Web Reasoning and Rule Systems
Editorial: Design and evaluation of a semantic enrichment process for bibliographic databases
Data & Knowledge Engineering
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Time management is a key feature needed in any query language for web and semistructured data. However, only recently this has been addressed by the Semantic Web community, through the study of temporal extensions to RDF (Resource Description Framework). In this paper we show that the ability of the RDF data model of handling unknown resources by means of blank nodes, naturally yields a rich framework for temporal reasoning in RDF. That is, even without knowing the interval of validity of some statements we can still entail useful knowledge from temporal RDF databases. To take advantage of this, we incorporate a class of temporal constraints over anonymous timestamps based on Allen's interval algebra. We show that testing entailment in temporal graphs with the constraints proposed reduces to closure computation and mapping discovery, that is, an extended form of the standard approach for testing entailment in non-temporal RDF graphs.