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You Cannot ReSIST

You Cannot ReSIST. Hugh Glaser Electronics & Computer Science University of Southampton DSSE, 28th February 2007. With. Ian Millard Afraz Jaffri Benedicto Rodriguez ReSIST Partners esp. Brian Randell. ReSIST. EU Network of Excellence (www.resist-noe.org) Resilient Systems

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You Cannot ReSIST

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  1. You Cannot ReSIST Hugh Glaser Electronics & Computer Science University of Southampton DSSE, 28th February 2007

  2. With • Ian Millard • Afraz Jaffri • Benedicto Rodriguez • ReSIST Partners • esp. Brian Randell

  3. ReSIST • EU Network of Excellence • (www.resist-noe.org) • Resilient Systems • 15 partners across Europe • Resilience Knowledge Base • Resilience-Explicit Computing • Dissemination

  4. Semantic Web ChallengeWinner 2003 • CS AKTive Space • Gather data • UK People, projects, publications • Research funding • Top Universities • Geographical presentation • AKT Project (www.aktors.org)

  5. The Challenges • Organisational Intelligence • Who is doing what where? • What impact are they having? • Integrating resources – • Research Councils, HEFCE, HESA, RAE, EU, Institutional DBs and web sites, ePrints, citation services… • Information is heterogeneous and distributed • Not under own control • Not in a common format… • Presenting to users

  6. http://triplestore.aktors.org/demo/AKTiveSpace/

  7. Conceptual Architecture AKT Reference 3store datasources gatherers and mediators ontology knowledge repository(triplestore) applications

  8. So what is RDF...? • Resource Description Framework • W3C recommendation, comes predominantly from Semantic Web research efforts • A modelling language designed to represent facts about resources in the World Wide Web • Can be used to model any abstract domain, things do not have to be accessible on the web to be described in it

  9. RDF: Basic components • RDF graphs are formed by triples subject predicate object

  10. Open - SPARQL PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX owl: <http://www.w3.org/2002/07/owl#> PREFIX akt: <http://www.aktors.org/ontology/portal#> PREFIX akts: <http://www.aktors.org/ontology/support#> PREFIX wiki: <http://resist.ecs.soton.ac.uk/wiki/> PREFIX course: http://www.resist-noe.org/ontology/courseware# SELECT * WHERE { ?paper akt:has-title ?title . ?paper akt:has-author ?person . ?paper <http://www.aktors.org/ontology/extension#has-abstract> ?abstract } LIMIT 10

  11. At the Centre

  12. Important Components3store and CRS • Open source semantic store • Scalable • ReSIST - 50 million facts • Garlik - 1,000,000,000s • Uses lack of predefined schema • Cluster • Distributed queries next • Across external stores

  13. Triplestore Evaluation

  14. Consistent Reference Service (CRS) • Where is the Semantic Web here? • Technologies used • Who is “Jongho Nang”? • Which paper is “MPEG 비디오스트림에대한 MC-DCT 영역에서의자막처리방법”?

  15. Problems • Finding co-referents • NLP, Statistical, Structural • Making the knowledge available • Exposing a DB? • (Semantic) Web services • Home page (FOAF file)? • Identify co-referents • Against different policies - fit for purpose • Are false positives acceptable? • Distributed and federated (compare OAI-PMH) • Not a Naming Authority

  16. Query by URI: • http://dblp.uni-trier.de/People#35ff57fb • Response from CRS: <ns1:Bundle rdf:about= "http://www.aktors.org/ontology/coref#bundle-a458455fb66f997bf4a67488dbbdbdae"> <ns1:duplicate rdf:resource="http://citeseer.ecs.soton.ac.uk/#P147667"/> <ns1:duplicate rdf:resource="http://dblp.uni-trier.de/People#35ff57fb"/> <ns1:insertedOn>20061126</ns1:insertedOn> <ns1:hasCanon rdf:resource="http://citeseer.ecs.soton.ac.uk/#P147667"/> </ns1:Bundle> • Need to compute fixed point across CRSes • But “canon” can be used • Maintained according to need • Automatic • By Hand

  17. Real Semantic Web • The RKB Explorer • Accessing live RDF • Current ECS? • Query over multiple SPARQL endpoints • Triplestore per major resource • External triplestores • Universities • Funding agencies (CORDIS, NSF, etc) • CRS • Different sources because of different curation • Different types: convenience, good engineering • Different policies: application needs, trust • At last the Ontology is of some use.

  18. Future for ReSIST • Extend the use of Semantics • Resilient-Explicit Computing • Model expert knowledge • Model processes • Model components • Support Engineer/Scientist • Move effectively between • System design • Knowledge Base • People • To choose cost, characteristics, etc • Support Run-Time Deployment • Dynamic Reconfiguration

  19. Virtual Learning Environment Reprints Peer-Reviewed Journal & Conference Papers Technical Reports LocalWeb Preprints & Metadata Institutional Archive Publisher Holdings Certified Experimental Results & Analyses Data, Metadata & Ontologies In the Wild Undergraduate Students Digital Library Graduate Students E-Scientists E-Scientists E-Scientists Grid Entire E-Science CycleEncompassing experimentation, analysis, publication, research, learning E-Experimentation

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