The JISC IE Metadata Schema Registry

Pete Johnston UKOLN, University of Bath

JISC Joint Programmes Meeting

Brighton, 6-7 July 2004

http://www.ukoln.ac.uk/

                                                             

http://www.ukoln.ac.uk/

Outline

• What is a metadata schema registry?

• Metadata application profiles

• The JISC IE and the IEMSR

                                                             

http://www.ukoln.ac.uk/

JISC IE Metadata Schema Registry project (IEMSR)

• Funded under JISC Shared Services programme, Jan 2004 – July 2005– UKOLN, University of Bath– ILRT, University of Bristol– CETIS, Becta as contributing partners

• Main outputs– Pilot metadata schema registry service for JISC IE– Schema creation tool(s) for implementers (plus

documentation)– Open-source software– Models for metadata "application profiles"– Recommendations re policy framework

                                                             

http://www.ukoln.ac.uk/

Metadata Schema Registries

• What is a metadata schema registry? – Application that provides services based on

information about metadata vocabularies and their component terms

• Metadata vocabulary – Functional set of terms managed as a unit

(element set)

• Information provided to registry in the form of machine-readable schemas

• Services to human readers, software agents

IEMSR

Schema

Schema

Schema

Schema

                                                             

http://www.ukoln.ac.uk/

Metadata Schema Registries

• What functions might a metadata schema registry support?– Disclosure of metadata vocabularies, terms– Discovery/selection (and re-use) of vocabularies,

terms– Verification of provenance/status of vocabularies,

terms– Navigation of relationships between terms– Mapping, inferencing– Pointers to related resources

• guidelines, bindings, transformations…

                                                             

http://www.ukoln.ac.uk/

Why an MSR for JISC IE?

• Effective exchange of metadata essential to interoperability in IE– IE Technical Standards specify "baseline" of Simple DC

and/or UK LOM Core– Also exchange of richer metadata between services– Use of metadata "application profiles"

• Increasing requirement to disclose metadata semantics– Issues of authority, currency, provenance, trust

• N.B. IEMSR concerned with metadata exposed by applications, not internal database schemas

                                                             

http://www.ukoln.ac.uk/

Metadata Application Profiles

• Implementers adopt metadata standards in pragmatic way– Optimise for requirements of application

• "Application profile" as declaration of usage of metadata vocabulary– (re-)use of existing terms– constrained for context of application– provided as schema for processing by registry– tool(s) for schema creation

• Previous work (CORES, MEG registries) primarily “DC-centric”– IEMSR to disclose LOM APs also– Require model for LOM AP

                                                             

http://www.ukoln.ac.uk/

The IEMSR in the IE

• IEMSR as shared/infrastructural service – Machine interface(s) ("structured")– Provide functions of common interest to other

service components (content providers, fusion, presentation, other shared services) in IE

– "Common service" in e-Learning Framework

JISC-fundedcontent providers

institutionalcontent providers

externalcontent providers

brokers aggregators catalogues indexes

institutionalportals

subjectportals

learning managementsystems

media-specificportals

end-userdesktop/browser pr

esen

tatio

n

fusion

prov

isio

n

OpenURLresolvers

shared infrastructure

authentication/authorisation (Athens)

JISC IE service registry

institutional preferencesservices

terminology services

user preferences services

resolvers

IEMSR

                                                             

http://www.ukoln.ac.uk/

The IEMSR in the IE

• However… metadata exchange in IE currently based on prior co-ordination between human data/service providers

• IEMSR as presentational service – Human-readable interface ("unstructured")– Disclose/discover metadata semantics, usage– Promote appropriate reuse of existing

solutions– Minimise duplication of effort

JISC-fundedcontent providers

institutionalcontent providers

externalcontent providers

brokers aggregators catalogues indexes

institutionalportals

subjectportals

learning managementsystems

media-specificportals

end-userdesktop/browser pr

esen

tatio

n

fusion

prov

isio

n

OpenURLresolvers

shared infrastructure

authentication/authorisation (Athens)

JISC IE service registry

institutional preferencesservices

terminology services

user preferences services

resolvers

IEMSR

metadatavocabulary

portal

                                                             

http://www.ukoln.ac.uk/

IEMSR: Use Scenarios

• Content provision service discloses application profile– Constructs & publishes schema, submits to registry

• Metadata schema developer explores/(re-) uses existing implementation choices– Human-readable documentation– Controlled vocabularies used– Schemas for bindings

• Metadata schema researcher surveys existing usage of metadata standards– How properties/data elements used in practice (within

domain, community, area)

                                                             

http://www.ukoln.ac.uk/

IEMSR: Use Scenarios

• Metadata creation tool accesses machine-readable description of selected application profile– Obligation/occurrence constraints– Human-readable documentation– Controlled vocabularies as e.g. VDEX – Schemas for bindings

• Aggregation or presentation service requires information on application profile– Which "metadata formats" to request via OAI-PMH for

bindings of this AP– What labels to use in display of harvested records

1. Registry browse menuhttp://meg.ukoln.ac.uk/ http://meg.ukoln.ac.uk/

2. Display Element Set

3. Display Element

4. Display Element Usage

1. Create Application Profile description

Add AP

descriptionto Schema

Add AP details

2. Create Element Usage description

Search registry for

“title”Elements

Drag Element

To Profile

3. Create Element Usage description

Add Element

Usagedescriptionto Schema

Add ElementUsagedetails

4. Save Schema as RDF/XML

File -- Save As

Confirm

5. Submit Schema to Server

Click to submit

Finish

JISC IE Metadata Schema Registry Project

http://www.ukoln.ac.uk/projects/iemsr/

                                                             

http://www.ukoln.ac.uk/

Acknowledgements

• UKOLN is funded by the UK Museums, Libraries and Archives Council (MLA), the Joint Information Systems Committee (JISC) of the UK higher and further education funding councils, as well as by project funding from the JISC and the European Union. UKOLN also receives support from the University of Bath where it is based.

• http://www.ukoln.ac.uk/

The JISC IE Metadata Schema Registry

Pete Johnston UKOLN, University of Bath

JISC Joint Programmes Meeting

Brighton, 6-7 July 2004

http://www.ukoln.ac.uk/