Transcript apps-sru-20060303

IESR: A Registry of Collections and
Services
Ann Apps
MIMAS,
The University of Manchester, UK
Outline
• Purpose of JISC Information
Environment Service Registry (IESR)
• IESR content description
• IESR services
• Using IESR for metasearch
• Future direction of service registries
• Integration Issues
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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
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IESR Content
• Descriptions of:
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Collections of resources
Informational Services that provide access
Agents: Owners / Administrators
Transactional Services
• Supplied by resource providers
• Check by IESR content manager
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IESR Entities
Collection
provides
access
Service
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owns
administers
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Agent
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IESR Entity Description
• Entities identified with URI
• Described by metadata
• Metadata defined by Application Profile
– Semantics
– Occurrence
– Searchable
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IESR Collection Metadata
• Based on RSLP Collection Description
• Simplification for electronic resources
• Consistent with:
– DCMI Collection Description Application
Profile
– NISO MI Collection Description
• Vocabularies for property values
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IESR Service Metadata
• More than RSLP CD ‘locator’
• Bespoke IESR scheme to support
discovery and registry application
• Single access method:
– SRU, Z39.50, SOAP, OAI-PMH, Web/CGI
• Location URL
• Interface property for some service
types using appropriate schema
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Other Service types
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SOAP: Locator: access URL; Interface: WSDL
SRU: Interface: ZeeRex
SRW: Interface: ZeeRex; WSDL
OAI-PMH: Locator: BaseURL
OpenURL: Locator: BaseURL
Web CGI: Interface: arguments
Web page: Locator: URL
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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
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IESR Services
• Z39.50
– Search via Bib-1 attributes
– Results: text (SUTRS); composite XML
• OAI-PMH for harvesting: entity XML
• OpenURL Link-To Resolver
– Implements IESR identifier resolution
• Web Search and Browse
• Data Supply Editor
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Future Services
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SRU
Web Services SOAP / SRW (planned)
RSS
UDDI (under investigation)
– Mapping IESR data to UDDI
– Prototype registry
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Using IESR: Portal Metasearch
• Social Science portal discovers
collections with e.g. SRU services
• Provides cross-search to end-user using
e.g. SRU
• Portal builder doesn’t need to know
about all resources
• Users discover collections unaware of
• Alternative: OAI-PMH harvest
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Distributed Service Registries
• Scope of IESR
• Distributed / federated model
– Each node describes own resources
• How to cross search?
– Metasearch; UDDI; OAI-PMH harvest
• IESR collaboration with OCKHAM in US
– Searching is local
– Replication by OAI-PMH harvest
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Integration Issues
• Resources have Web interface only
• IESR covers all service protocols:
– Few SRU services in JISC IE
• Contributing technical service details
• Use of Service Registry still visionary
• Dynamic use with SOAP not feasible
– NISO Web Services and Practice WG
– SRW
• Description of authentication details
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Integration Issues: Sharing
• Sharing records needs common schema
– NISO Metasearch Initiative Collection
Description: basis of IESR and OCKHAM
• Rights issues
– Simplified with common CC licence
• Cross searching federated registries:
– Metasearch? Harvest?
• UDDI
– Loss of full collection description
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Recommendations
• Encourage the provision of m2m
interfaces for resources
– Advertise SRU as low barrier solution
• Register SRU services in online
directories to encourage use
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IESR Details
Information: http://iesr.ac.uk/
Application Profile: http://iesr.ac.uk/profile/
XML Schema: http://iesr.ac.uk/schemas/iesr.xsd
Web search: http://iesr.ac.uk/registry/
Z39.50 service: http://iesr.ac.uk/use/z3950/
OAI-PMH service: http://iesr.ac.uk/use/oaipmh/
IESR Helpline service: [email protected]
Ann Apps: [email protected]
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