iesr: a registry of collections and services ann apps mimas, the university of manchester, uk
TRANSCRIPT
IESR: A Registry of Collections and Services
Ann AppsMIMAS,
The University of Manchester, UK
2006-09-07 Digital Repositories, e-Research and Portals Workshop
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Outline
• Purpose of JISC Information Environment Service Registry (IESR)
• IESR content description• IESR services• Using IESR• Future directions of service registries
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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– Registry developed and hosted by MIMAS
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IESR Content
• Descriptions of:– Collections of resources– Made available via Informational Services– Agents: Owners / Administrators– Transactional Services
• Contributed by resource providers• QA check by IESR content manager
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Services and Collections
• Collection: – An aggregation of resources
• Service: – A system that provides one or more
functions
• Informational service: – Provides access to a collection
• Transactional service: – Other functionality
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IESR Entities
Collection
Service Agentadministers
ownsprovides access
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IESR Entity Description
• Entities identified with URI• Described by metadata• Metadata defined by Application Profile
– Semantics– Occurrence– Searchable
• Application Profile for human reading– More restrictive than XML schema
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IESR Collection Metadata
• Based on RSLP Collection Description• Simplification for electronic resources• Consistent with standards development:
– DCMI Collection Description Application Profile
– NISO MI Collection Description Specification
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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)– Use by:
• Terminology service• Portal item level search
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IESR Service Metadata
• More than RSLP CD ‘locator’• A few IESR properties to support
discovery and registry application• IESR agnostic about protocol• Single access method / protocol:
– SRU, Z39.50, SOAP, OAI-PMH, Web/CGI
• Location URL
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IESR Service Metadata (continued)
• Prototype service type list– e.g. Alert, Harvest
• Authentication details– Will investigate Shibboleth AAP
• Interface property for some service protocols – Connection details– Uses appropriate schema
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Service Connection Details
• SOAP: Locator: access URL; Interface: WSDL
• Z39.50, SRU: Interface: ZeeRex
• SRW: Interface: ZeeRex; WSDL
• OAI-PMH: Locator: BaseURL
• OpenURL: Locator: BaseURL
• Web CGI: Interface: WSDL (HTTP binding)
• Web page: Locator: URL
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IESR Administrative Metadata
• Included with every entity• IESR includes:
– Creating organisation– Publisher: IESR– Latest modification date– Rights to reuse descriptions
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IESR Creative Commons Licence
• All IESR records licensed under a Creative Commons licence:– Non-commercial (freely available)– Share-alike (maintain same licence)– Attribution-required (attribute provenance)
• Contributors agree to this licence• http://creativecommons.org
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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 Editor for Contributors
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Future Services
• SRU (Search / Retrieve over HTTP)– NISO Metasearch XML Gateway (MXG)
• Web Services SOAP / SRW• RSS• UDDI view
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Service Registry Use
Registry
Client / PortalCollection / Service
Register / ContributeDiscover
Invoke
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Portal in JISC IE
• JISC defines a portal:A network service that brings together content
from diverse distributed resources using technologies such as cross searching, harvesting, and alerting, and collates this into an amalgamated form for presentation to an end user.
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Using IESR
• Portal– amalgamated set of resources
• IESR provides:– Discovery of resource collections– Up-to-date details of access to collections– Discovery of transactional services
• RSS• OpenURL resolvers
• IESR will develop Use Cases
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Portal Metasearch Scenario
• Social Scientist: find resources about family health
• Social Science portal discovers collections with e.g. Z39.50 services– Vocabulary service needed
• Portal provides cross-search to end-user using e.g. Z39.50
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IESR Benefits for Portal
• IESR provides for: – Discover – Locate: access details in retrieved
composite record – Invoke: interface ZeeRex connection details
• Portal builder doesn’t need to know about all resources
• Users discover collections unaware of
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Harvesting IESR
• OAI-PMH allows replication of IESR• Portal harvests IESR records• Caches locally for use by portal
software, e.g.:– Local service registry– Knowledgebase after conversion to
appropriate format
• Scenario: portal for Open Access material in Institutional Repositories
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MIMAS Metadatabase Use Scenario
• MIMAS Metadatabase is a catalogue of resources provided by MIMAS
• Metadatabase will– Harvest changed IESR records nightly– Select MIMAS records and transform– Update Metadatabase
• Staff have only one set of descriptions to maintain
• XML descriptions for other uses
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e-Research Scenario
• Bioinformatics researcher: find research literature about a cattle disease
• Bioinformatics Portal builder discovers bibliographic collections with SOAP services, e.g. Zetoc– Vocabulary service needed
• Portal builder plugs in bibliographic service
• Researcher includes in workflow
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Use by Portal Builder
• Discover resource and access details by Web interface
• Handcraft resource into metasearch• Possible future Digital Library build
software will automate process• SOAP services need manual
intervention
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Other Uses
• Portal Links to Web Search – General resource discovery
• Reuse collection description– Initially created by resource provider– Shared by multiple registries and
applications
• RSS Aggregator (news; data alerts)– Personal digital library portal
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Metadata Schema Use
• OCKHAM (US): Outcomes of NSF projects
• CETIS / DEST: eLearning/Admin in Australia
• aDORe Digital Object Repository (LANL)• Australian Partnership for Sustainable
Repositories: collection description service
• Standards development:– DCMI Collection Description / Agents– NISO Metasearch Initiative
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Wider Information Environment
• Scope of IESR– JISC, UK, international?– Data ownership and maintenance
• Distributed / federated model– Each node describes own resources
• How to cross search?– Metasearch; UDDI; OAI-PMH harvest
• IESR collaboration with OCKHAM in US– Replication by OAI-PMH; search local
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UDDI
• Standard for discovery and publicising of services on offer
• Built prototype registry (UKOLN)– jUDDI / MySQL (JDBC)– Not a lot of software available
• Mapping IESR data to UDDI– businessEntity – Agent (administrator)– businessService – conflate Service and
Collection• Loss of rich collection detail?
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UDDI in IE
• Is there a requirement?• Little evidence in Digital Libraries• Some use in eScience:
– Grid Engineering Taskforce– Grimoires
• Also richer RDF metadata
• IESR UDDI view planned – Interoperate with other registries– But may be ‘lossy’
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Sharing Descriptions
• Sharing collection descriptions– Created by resource provider– Reuse with possible local augmentation– Needs common / derivable metadata
schema• Standards: NISO Metasearch Initiative / DCMI
Collection Description: provide common core• IESR a practical example application
• Rights issues– Simplified with common CC licence
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IESR Future
• More and updated content• New IESR services• Maintenance of metadata schema
– Stakeholder requirements:• eResearch• eFramework
– Standards development
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IESR Future (continued)
• Demonstrating viable IESR use– Use Cases– JISC IE Test Bed Project
• Collaboration with Service Registry development, UK and international– OCKHAM test bed experiment
• Persistence of content
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IESR Details
Thank You! Questions?
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]