A Triple Space-Based Semantic Distributed Middleware for Internet of Things
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The document presents a triple space-based semantic distributed middleware for the Internet of Things (IoT), aimed at simplifying device collaboration without a centralized coordinator. It discusses the motivation, proposed middleware functionalities, and details of experimentation conducted to evaluate its performance across different platforms. The conclusion emphasizes the middleware's capabilities for knowledge sharing among heterogeneous devices while acknowledging its limitations for mobile applications.
A Triple Space-Based Semantic Distributed Middleware for Internet of Things
- 1. Motivation Basic API Proposed middleware Demo Experimentation Conclusions A Triple Space-Based Semantic Distributed Middleware for IoT Aitor G´mez-Goiri1 o Diego L´pez-de-Ipi˜a2 o n DeustoTech, Deusto Institute of Technology http://www.morelab.deusto.es July 6, 2010 Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 2. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Presentation 1 Motivation 2 Basic API 3 Proposed middleware queryMultiple Services Embedded platform Mobile platform 4 Demo 5 Experimentation 6 Conclusions Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 3. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Motivation Self-configuring wireless network of devices whose purpose would be to interconnect all things Smart environments usually consist of a central device which has reason capacity and coordinates other devices Requires human intervention every time a new device is deployed Our aim is try to simplify the collaboration between devices providing certain intelligence on them without centralized coordinator Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 4. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Some alternatives... UPnP. Autoconfigure networks, devices share capabilities, events... DLNA. To share media content. Drawbacks: Multiple APIs and protocols from different vendors Semantic: Share knowledge instead of data. Without predefined language. Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 5. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Triple Space Tuplespace: read and write data structures in a shared space TripleSpace: read and write triples of semantic data Reference autonomy Time autonomy Space autonomy tsc++ Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 6. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Distributed approach Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 7. Motivation Basic API Proposed middleware Demo Experimentation Conclusions How is it distributed? Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 8. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Write Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 9. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Query Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 10. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Read Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 11. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Take Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 12. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Subscribe and advertise Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 13. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Proposed middleware tsc++ has been modified to provide another 3 primitives queryMultiple register invoke tscME developed communication between tsc++ peers and tscME peers gateway for other embedded devices Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 14. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Boundaries Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 15. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Query vs. QueryMultiple template: ?s ?p ?o . n templates which are extracted from a SPARQL query Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 16. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Input query CONSTRUCT { ?measure ismed:hasValue ?value . } WHERE { ?measure rdf:type ismed:LightMeasure . ?measure ismed:hasValue ?value . ?measure ismed:hasDateTime ?datetime . OPTIONAL { ?measure2 rdf:type ismed:LightMeasure . ?measure2 ismed:hasDateTime ?datetime2 . FILTER(?datetime2 > ?datetime) . } FILTER( !bound(?datetime2) ) } Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 17. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Templates after processing the query ?s rdf:type ismed:LightMeasure . ?s ismed:hasValue ?o . ?s ismed:hasDateTime ?o . Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 18. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Why is a new service approach necessary? Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 19. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Security Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 20. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Concurrency Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 21. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Location of the information Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 22. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Register Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 23. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Invocation (from the service consumer point of view) Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 24. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Invocation (from the service provider point of view) Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 25. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Embedded platform: SunSPOT Squawk Virtual Machine Basestation RESTful API for tsc++: Jetty + Jersey Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 26. Motivation Basic API queryMultiple Proposed middleware Services Demo Embedded platform Experimentation Mobile platform Conclusions Mobile platform: tscME Communication: Jxme Data store: RecordStore/Memory Semantic mngmnt: Microjena Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 27. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Scenario Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 28. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Experimentation Kernels 1 10 20 Spaces 1 5 10 1 5 10 1 5 10 read 0.2 0.2 0.3 3.5 3.0 3.0 10 10 9.8 take 0.2 0.2 0.3 3.4 2.9 2.6 10.3 9.9 11.1 query 0.4 0.3 0.2 7.0 3.7 3.3 24.8 11.9 10.6 Table: TscME networking evaluation results (in seconds) ↑ responses: ↑ processing time perform specific queries ↑ graphs: ↑ processing time distribute graphs over different spaces Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT
- 29. Motivation Basic API Proposed middleware Demo Experimentation Conclusions Conclusions TS appropriate to share knowledge between heterogeneous devices tsc++ is not appropriate for mobile devices: tscME Primitives are powerful but awkward Performance dependent on the implementation Not only between them, also exporting data to Internet Aitor G´mez-Goiri, Diego L´pez-de-Ipi˜a o o n A Triple Space-Based Semantic Distributed Middleware for IoT