Download to read offline
![Existing Standards &
Specifications
IEEE 1484.12.1-2002 Standard for Learning Object Metadata (LOM) specifies how to describe
learning content [IEEELOM 2002];
CWA 15555 Guidelines and Support for Building Application Profiles in e-Learning (delivered
under SA/CEN/2004/25) specifies how application profiles can be derived from IEEE LOM
[CWA15555 2006];
CWA 14645 Availability of alternative language versions of a learning resource in IEEE LOM
(delivered under SA/CEN/2000/42) specifies how the availability of alternative language versions
of a learning resource can be described in IEEE LOM [CWA14645 2003];
CWA 15454 A Simple Query Interface Specification for Learning Repositories (delivered under
SA/CEN/2003-13) defines SQI -- a query interface to access content in learning repositories
[CWA15454 2005]. Alternatives to SQI include SRU/SRW [SRU 2007];
The ProLearn Query Language defines a query language for searching learning object
repositories [PLQL 2008]. Alternatives include CQL [CQL 2008] and XQuery [XQuery 2007];
Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) defines how metadata can
be harvested from learning object repositories [OAIPMH 2002]. Alternatives include publishing a
sitemap for a web crawler to harvest [Sitemap 2008].
The Simple Publishing Interface (SPI) (under SA/CEN/2007-24A) in the CEN Workshop on
Learning Technologies defines how metadata and content can be inserted into learning object
repositories [CWA16097 2010]. Alternatives include the Atom Publishing Protocol [ATOM 2005]
and PENS [PENS 2006]](https://image.slidesharecdn.com/ceniorpt-110120060355-phpapp01/85/44rd-CEN-WS-LT-meeting-PT-interoperability-of-registries-6-320.jpg)
Uploaded byJoris Klerkx
44rd CEN WS/LT meeting PT interoperability of registries
The document outlines a proposal for enhancing interoperability among learning object repositories (LORs) by connecting registries and integrating existing standards. Key objectives include developing a shared network of registries, creating reference implementations, and establishing best practices for content management. The interim report discusses methodologies, reference models, and future work for improving access and synchronization of registries.
44rd CEN WS/LT meeting PT interoperability of registries
- 1. ! PT Interoperability of Registries JorisKlerkx, David Massart, Dan Rehak, Fredrik Paulsson and many volunteers... 44RD MEETING OF CEN/ISSS/WS-LT, BRUSSELS, 17/01/2011
- 2. PT Objectives Enable theinterconnection of learning object repositories (LORs) Increase LORs impact in making relevant content available Specify how a network of registries can be set up with existing standards and specifications
- 3. PT Tasks T0: SelectionTeam Members T1: Related Work T2: Proposal specifiation for a LOR registry T3: Reference Implementations T4: Revision of proposal (T2), based on feedback T3 T5: Discussion & Consensus Building T6: Public Commenting Phase T7: Dissemination of Results
- 4. PT Timing Reference Implementations Public Commenting Revision Proposal phase
- 5. Interim Report -M12 Introduction & Objectives Definitions Related Work Data Model Access to Registry Reference Implementation Future Work
- 6. Existing Standards & Specifications IEEE 1484.12.1-2002 Standard for Learning Object Metadata (LOM) specifies how to describe learning content [IEEELOM 2002]; CWA 15555 Guidelines and Support for Building Application Profiles in e-Learning (delivered under SA/CEN/2004/25) specifies how application profiles can be derived from IEEE LOM [CWA15555 2006]; CWA 14645 Availability of alternative language versions of a learning resource in IEEE LOM (delivered under SA/CEN/2000/42) specifies how the availability of alternative language versions of a learning resource can be described in IEEE LOM [CWA14645 2003]; CWA 15454 A Simple Query Interface Specification for Learning Repositories (delivered under SA/CEN/2003-13) defines SQI -- a query interface to access content in learning repositories [CWA15454 2005]. Alternatives to SQI include SRU/SRW [SRU 2007]; The ProLearn Query Language defines a query language for searching learning object repositories [PLQL 2008]. Alternatives include CQL [CQL 2008] and XQuery [XQuery 2007]; Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) defines how metadata can be harvested from learning object repositories [OAIPMH 2002]. Alternatives include publishing a sitemap for a web crawler to harvest [Sitemap 2008]. The Simple Publishing Interface (SPI) (under SA/CEN/2007-24A) in the CEN Workshop on Learning Technologies defines how metadata and content can be inserted into learning object repositories [CWA16097 2010]. Alternatives include the Atom Publishing Protocol [ATOM 2005] and PENS [PENS 2006]
- 7. GLOBE >1.000.000 “Alliance to make shared online learning resources available to educators and students around the world” HTTP://WWW.GLOBE-INFO.ORG/ 7
- 8. BMBWK EUN MEC RVP SQI UDDI OAI SQI Client LOR Registry OAI-PMH Registry SQI ARIADNE C-H FWU MESC TLF Harvester OAI ASPECT CFL INDIRE MSU UL-FRI MELT SQI SQI Federated EDUCATIO KUL NCTE XTEC GLOBE Search SPI OAI OAI-PMH ARIADNE SQI Harvester WINDS DYNAMO ARIADNE Harvester MACE MACE IRB CuminCAD OAI OAI OAI SQI SQI SQI SQI SQI SQI SQI LACLO NIME EUN EdNA CGIAR Pubelo Merlot OAI OAI SQI SQI SQI SQI SQI SQI ISKME KERIS III COSL LORNET Ariadne 8
- 9. Networks of registries 4. 3.2
- 10. Objectives How to set up this network of registries by Profiling existing standards and specifications
- 11. Methodology Rapid Prototyping Build reference implementations Specify best practices in managing and maintaining registries How and how often to synchronize? How to find collections of interest? What kind of authorization is needed? etc.
- 12. Interim Report -M12 Introduction & Objectives Definitions Related Work Data Model Access to Registry Reference Implementation Future Work
- 13.
- 14. Interim Report -M12 Introduction & Objectives Definitions Related Work Data Model Access to Registry Reference Implementation Future Work
- 15. Related Work The FederatedRepositories for Education (FRED) project Services: Harvest (OAI-PMH), Obtain, Search Service (SRU + LOMCQL)
- 16. Related Work TheLearning Registry “learning resources easier to find, easier to access and easier to integrate into learning environments wherever they are stored -- around the country and the world Capabilities: Publish Consume + feedback Synchronizing by replication
- 17.
- 18. The Spider Searching repositoriestargeting Swedish schools RDF-store OAI-PMH SQI SRU
- 19. Interim Report -M12 Introduction & Objectives Definitions Related Work Data Model Access to Registry Reference Implementation Future Work
- 20. Data Model IMS LODE REGISTRY MODEL BASED ON THE ISO 2146 STANDARD: “REGISTRY SERVICES FOR LIBRARIES AND RELATED ORGANIZATIONS
- 21.
- 22. Interim Report -M12 Introduction & Objectives Definitions Related Work Data Model Access to Registry Reference Implementation Future Work
- 23. Access to Registry How to query a registry? How to synchronize the contents of different registries with each other? How to add a new repository to the registry? How to update a description of a registry? ... WHICH SPECIFICATIONS? STANDARDS?
- 24. How to Query? SimpleQuery Interface (CWA 15454) SQI is neutral in terms of results format and query languages. SQI supports synchronous and asynchronous queries to support heterogeneous use cases. SQI supports both a stateful and a stateless implementation. SQI is based on a session management concept in order to separate authentication issues from query management Search/Retrieval Using URL (SRU) SRU supports transport via HTTP GET, HTTP POST or HTTP SOAP, i.e., rest-like and web-service based protocols Several result formats (context sets) such as DC, IEEE LOM, etc.
- 25. How to Synchronize? (1/2) Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) OAI-verbs (i.e Identify, ListMetadataFormats, GetRecord, ListIdentifiers, ListRecords, ListSets) Subscribe to News RSS - ATOM
- 26. How to Synchronize? (2/2) Data Replication Star topology central registries local registries ...
- 27. How to Publish/Update? The Simple Publishing Interface (CWA 16097) Submitting (publishing) a resource to a repository/ registry. Deleting a resource from a repository/registry. Submitting a metadata record to a repository/registry. Deleting a metadata record from a repository/registry.
- 28. Interim Report -M12 Introduction & Objectives Definitions Related Work Data Model Access to Registry Reference Implementation Future Work
- 29. Interim Specification ProfiledIMS LODE Data model for describing Collection Descriptions Synchronization collection descriptors using OAI- PMH Adding/Updating/Deleting of collection descriptors using SPI Querying/Searching Registry by using SQI
- 30. Interim Report -M12 Introduction & Objectives Definitions Related Work Data Model Access to Registry Reference Implementation Future Work
- 31. Reference Implementation 1 supports interim specification Ariadne Registry deployed in ARIADNE and in LORNET http://ariadne.cs.kuleuven.be/ariadne-registry/
- 32. Currently Specification Targets SQI 14 OAI-PMH 38 SRU 1 SPI 1 TOTAL 54 TOTAL Objects Exposed +/- 1.151.000 PROJECTS INVOLVED ASPECT, ICOPER, ORGANIC.EDUNET, SHARE.TEC, GLOBE, ... 32
- 33.
- 34. Newsfeeds ALLREPOSITORIES, OAI-PMH TARGETS, SQI TARGETS, ...
- 35. Integration of tools(e.g Harvester)
- 36.
- 37. Access Reference Implementation OAI-PMH for synchronizing collection descriptors between interconnected registries http://ariadne.cs.kuleuven.be/ariadne-registry/services/oai SPI for adding, updating and deleting repositories from a registry http://ariadne.cs.kuleuven.be/ariadne-registry/services/SPI SOAP-binding of SQI for searching the contents of the registry Session Management: http://ariadne.cs.kuleuven.be/ariadne-registry/ services/SqiSessionManagement Target: http://ariadne.cs.kuleuven.be/ariadne-registry/services/SqiTarget RESTful binding of SQI for searching the contents of the registry http://ariadne.cs.kuleuven.be/ariadne-registry/api/sqitarget e.g http://ariadne.cs.kuleuven.be/ariadne-registry/api/sqitarget? query=ariadne&start=1&size=1&lang=plql1&format=lom
- 38. Future Work 2nd ReferenceImplementation Planned at European Schoolnet Integration feedback Query Language specification Avoiding redundancy Authorization aspects Best practices for management and maintenance of registries Workshop(s) & dissemination activities
- 39. HTTP://WWW.ICOPER.ORG/ HTTP://ASPECT-PROJECT.ORG/ HTTP://WWW.ROLE-PROJECT.EU/HTTP://WWW.STELLARNET.EU/ Thanks! Questions? Interested? http://bit.ly/c6mRZC 39