A Middleware Registry for the Discovery of Collections and Services Ann Apps MIMAS, The University of Manchester, UK.

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Presentation transcript:

A Middleware Registry for the Discovery of Collections and Services Ann Apps MIMAS, The University of Manchester, UK

NCeSS Outline Purpose of JISC Information Environment Service Registry (IESR) IESR content description IESR services Using IESR The future

NCeSS Why IESR? JISC Information Environment: –Collections of resources for researchers, learners, teachers in UK Single central registry – m2m access –Improve awareness and access Funded by JISC: –MIMAS, UKOLN, University of Liverpool –Registry developed and hosted by MIMAS

NCeSS IESR Content Descriptions of: –Collections of resources –Informational Services that provide access –Agents: Owners / Administrators –Transactional Services Supplied by resource providers Check by IESR content manager

NCeSS IESR Entities Collection ServiceAgent administers owns provides access

NCeSS IESR Entity Description Entities identified with URI Described by metadata Based on open standards IESR terms defined in IESR namespace Metadata defined by Application Profile –Semantics –Occurrence –Searchable

NCeSS IESR Collection Metadata Based on RSLP Collection Description Simplification for electronic resources Consistent with DCMI Collection Description Application Profile

NCeSS Vocabulary Encoding Schemes Defined in Application Profile Single backbone subject scheme –Dewey Decimal Classification System Other common vocabularies supported iesr:usesControlledList –IESR defined list (extensible) –terminology service; item level search

NCeSS 20059

NCeSS IESR Service Metadata More than RSLP CD ‘locator’ Bespoke IESR scheme, uses open standards Single access method: –Z39.50, SOAP, OAI-PMH, Web/CGI Location URL Interface property for some service types

NCeSS

NCeSS Other Service types SOAP: –Locator: access URL –Interface: WSDL OAI-PMH: –Locator: BaseURL –Interrogate service (Identify) for details OpenURL: Locator: BaseURL Web CGI: Interface: arguments Web page: Locator: URL

NCeSS IESR Agent and Administrative Metadata Agent: contact details Administrative: –Included with every entity IESR includes: –creating organisation, publisher: IESR –latest modification date –rights to reuse descriptions: Creative Commons

NCeSS IESR Services Z39.50 –Search via Bib-1 –SUTRS; XML OAI-PMH for harvesting Web Services SOAP (planned) –SRW; NISO VIEWS RSS (later) UDDI (under investigation) Web Search and Browse

NCeSS IESR XML Composite Collection record via Z39.50: –Collection –All services that provide access –All agents: Owners of collection Administrators of services Single entity record via OAI-PMH Simple Dublin Core for Interoperability

NCeSS Using IESR Portal –amalgamated set of resources Metasearch on behalf of user –Social Science portal discovers collections –Provides cross-search to end-user –Portal could provide dataset search –Portal builder doesn’t need to know about all resources –Users discover collections unaware of

NCeSS Using IESR Portal: Harvest IESR records –Local service registry –Knowledgebase (convert to appropriate format) –Local configuration file Portal: Link to Web Search - general resource discovery RSS Aggregator: –news feeds; data alerts Reuse collection description

NCeSS Distributed Service Registries Scope of IESR –JISC, UK, international? –Data ownership and maintenance Distributed model –Each node describes own resources –How to cross search? Sharing collection descriptions –Need common metadata schema IESR collaboration with OCKHAM in US

NCeSS IESR Future Current phase until July 2006 More and updated content New IESR services Demonstrating viable IESR use Maintenance of metadata schema –Practical application of collection description Persistence of content

NCeSS IESR Details Specifications: Application Profile: XML Schema: Web Search IESR: Z39.50 service: OAI-PMH service: IESR Helpline service: Ann Apps: