This document describes Jean-Paul Calbimonte's doctoral research on enabling semantic integration of streaming data sources. The research aims to provide semantic query interfaces for streaming data, expose streaming data for the semantic web, and integrate streaming sources through ontology mappings. The approach involves ontology-based data access to streams, a semantic streaming query language, and semantic integration of distributed streams. Work done so far includes defining a language (SPARQLSTR) for querying RDF streams and enabling an engine to support streaming data sources through ontology mappings. Future work involves query optimization and quantitative evaluation.

1. Date: 23/09/2010FIS 2010 DoctoralConsortiumEnabling Semantic Integration of Streaming Data SourcesJean-Paul CalbimonteOntology Engineering Group. Departamento de Inteligencia Artificial.Facultad de Informática, Universidad Politécnica de Madrid. Campus de Montegancedo s/n. 28660 Boadilla del Monte. Madrid. Spain{jpcalbimonte}@fi.upm.esSupervisor: Oscar CorchoDC Scientific advisor: AchimRettinger

2. IndexIntroductionProblem statementMain research questionsApproachProposed solutionWork done so farEvaluation Future work2EnablingSemanticIntegration of Streaming Data Sources

3. Introduction & Scope3Streaming Data

4. Continuously appended data

5. Potentially infinite

6. Time-stamped tuples

7. Continuous queries

8. Latest used in queries

9. Windows: time information and tuple based(t9, a1, a2, ... , an)(t8, a1, a2, ... , an)(t7, a1, a2, ... , an)......(t1, a1, a2, ... , an)......Window [t7 - t9]Streaming Data Sensor Networks characteristics

10. Cheap, Noisy, Unreliable (depends)

11. Low computational, power resources, storage

12. Distributed query execution

13. Routing, OptimizationQueryEnablingSemanticIntegration of Streaming Data Sources

14. Problem StatementHeterogeneous sources: schemas, stream rates, QoS, delivery mechanisms

15. Distributed sources

16. Semantic heterogeneity

17. Semantic data provision only for stored data

18. Need for live streaming continuous queriesSensor NetworkDatabase DataIntegrateDecl. QueryIntegrated viewStream Data4SemanticIntegrationStreaming Data Sources

19. Main Research QuestionsProvide semantic query interfaces for streaming data