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Shaping the e-future? Grids, Web Services and Digital Libraries

Shaping the e-future? Grids, Web Services and Digital Libraries. Professor Tony Hey, Director UK e-Science Programme Dr Liz Lyon, Director UKOLN International JISC/CNI Conference June 2002, Edinburgh, UK. Part 2 Joining up the thinking.

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Shaping the e-future? Grids, Web Services and Digital Libraries

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  1. Shaping the e-future? Grids, Web Services and Digital Libraries Professor Tony Hey, Director UK e-Science Programme Dr Liz Lyon, Director UKOLN International JISC/CNI Conference June 2002, Edinburgh, UK

  2. Part 2 Joining up the thinking • Web Services & the Information Environment • Unpacking the components • Infrastructure services : registries • Semantics and knowledge technologies • Re-applying Grid concepts • Service management : autonomic computing, e-Utilities • A new, broader, integrated vision?

  3. The JISC Information Environment • “build an on-line information environment providing secure and convenient access to a comprehensive collection of scholarly and educational material” JISC Strategy 2001-2005 • Technical Architecture Study May 2001 http://www.ukoln.ac.uk/distributed-systems/dner/arch/dner-arch.html • Content providers, shared services, brokers & aggregators, portals • Discover: searching (Z39.50), sharing (OAI-PMH), alerting (RSS) • Access: resolver (OpenURL), institutional profiles

  4. Web Services • Business models • Application to application, B2C to B2B, m2m • Global take-up • Google Web Services APIs • Campus services integration at UC Berkeley • UK e-Government Interoperability Framework (e-GIF) Vs 4.0 • Support organisations • World Wide Web Consortium (W3C) Web Services Activity http://www.w3.org/2002/ws/ • Web Services Interoperability Working Group (WS-I) http://www.ws-i.org/

  5. Web Services standards • WSDL Web Services Description Language http://www.w3.org/TR/wsdl • descriptions of Web Services • UDDI Universal Discovery, Description & Integration http://www.uddi.org/specification.html • registries containing service descriptions • SOAP Simple Object Access Protocol http://www.w3.org/TR/SOAP/ • transport protocol for communication between Web Services • Emerging standards: WSRP, WSIA, WSXL…….

  6. IBM Web Services model Service provider WSDL SOAP WSDL UDDI Publish Bind Service requestor Service registry Find WSDL UDDI

  7. JISC IE Web Services mapping Content providers, aggregators, brokers, shared services Service provider Publish Bind Collection description service and Service description service IE service registry? Portals, aggregators, brokers Service registry Service requestor Find

  8. The JISC Information Environment and Web Services Andy Powell and Liz Lyon http://www.ariadne.ac.uk/issue31/information-environments/ Content providers, aggregators, brokers, shared services Service provider Publish Bind Collection description service and Service description service IE service registry? Portals, aggregators, brokers Service registry Service requestor Find

  9. Service Registries • UDDI Web Service standard • Global public registry • Private registries • JISC Information Environment registry • Grid Service registry • Service type • Service instance • Functionality • Registries are dynamic services • Implement searching across multiple registries • New Web Services compliant products ?

  10. Metadata Schema Registries • CORES http://www.cores-eu.net/ a forum on shared metadata vocabularies. • Standards Interoperability Forum in November • A Metadata Registry for the Semantic Web Rachel Heery (UKOLN) & Harry Wagner (OCLC) D-Lib May 2002 • Metadata for Education Group (MEG) http://www.ukoln.ac.uk/metadata/education/regproj/ • Demo of registry atWorkshop in September • 2nd Joint UKOLN / NeSC workshop Autumn 2002 • focussing on exchange of practical experience

  11. Semantic Web architecture – Tim Berners-Leehttp://www.w3.org/2000/Talks/1206-xml2k-tbl/slide10-0.html

  12. Ontologies and semantics • Semantic Web vision : a shared understanding of the meaning of descriptions of digital content (human, m2m) • An ontology defines the terms used to describe and represent an area of knowledge • classes of “things” • relationships between things • properties (attributes) of things • Semantic Web and Web Services are complementary • WWW and Web Services based on XML • Semantic Web based on ontology languages e.g. RDF, DAML+OIL • New Web ontology languages under development e.g. DAML-Services, Ontology Web Language (OWL) • http://www.w3.org/2001/sw/WebOnt/

  13. Knowledge and Web mining • The application of data mining techniques to the content, structure and usage of Web resources • Usage mining e.g. Amazon personal recommendations (note privacy issues!) • Structure mining e.g. RDN-WSE project http://ilrt.org/discovery/2002/01/wse-rdn/ • Content mining (data) e.g. AstroGrid developing a virtual observatory to support exploitation of key astronomical datasets http://www.astrogrid.org/

  14. Grid Services • Persistent services e.g. a data repository • Transient service instances which are dynamically created through a Factory interface and have a specified lifetime e.g. a distributed data mining service • How can we apply Web mining techniques to DL resources ? • Pattern analysis of multiple distributed video streams • Textual analysis of virtual collections of archival documents

  15. Collaborative environments • Distributed scientific collaboration • Collaborative Advanced Knowledge Technologies in the Grid (CoAKTinG) http://www.aiai.ed.ac.uk/project/akt/coakting/ • Smart spaces • Ontologically annotated audio/video streams • Describing “presence” • How can we apply research experience to Learning & Teaching environments ? • Tutor/student/group interaction in a VLE

  16. Computing (e-)Utilities • Computing on-demand • Storage on-demand • Applications on-demand • Application Service Providers (ASPs) • Which digital library functions should we outsource to improve efficiency ? • Preservation and curation services • Resolver services • Data / learning resource repositories

  17. Autonomic computing • “Technology needs to manage itself” Irving Wladawsky-Berger, IBM • Manifesto Paul Horn, IBM http://www.research.ibm.com/autonomic/manifesto/autonomic_computing.pdf • 8 key elements e.g. • Self-optimising • Self-configuration • Self-healing • Self-protecting • Should we apply this approach to digital libraries? • Improve performance by “intelligent” selection of targets for search requests based on response times

  18. The e-future? Digital LibrariesPersistent Data Information Semantic Web Knowledge Web ServicesTransactional GridsTransient Business

  19. ……Questions?

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