Aglr Tf

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Aglr Tf

  1. 1. Towards a harmonization of metadata application profiles for agricultural learning repositories Nikos Manouselis, Gauri Salokhe, Johannes Keizer and Stephen Rudgard
  2. 2. Introduction <ul><li>metadata interoperability has been judged as an essential issue in education and training context </li></ul><ul><ul><li>exchange and preservation of crucial learning and teaching information and its reuse among a large number of different systems and repositories. </li></ul></ul><ul><li>currently used standards include: IEEE Learning Object Metadata (IEEE LOM), Dublin Core and ISO Metadata for Learning Resources </li></ul>
  3. 3. Context of Agriculture <ul><li>learning technology (LT) specifications and standards have not been yet widely adopted </li></ul><ul><li>few implementations exist – primarily IEE LOM, DC or combination of the two </li></ul><ul><li>efforts have been distributed and dispersed, leaving space to approaches with significant differences between them </li></ul>
  4. 4. Agricultural Learning Repositories Task Force (AgLR-TF) <ul><li>initiative launched to connect and mobilize international stakeholders involved in agricultural learning repositories </li></ul><ul><ul><li>to create a network of organizations which will promote the development of a global infrastructure that will facilitate sharing and reusing of learning resources </li></ul></ul>
  5. 5. Activities of the Task Force <ul><li>Building a community </li></ul><ul><li>inventory of agricultural learning repositories </li></ul><ul><li>Organize an e-conference </li></ul><ul><li>Produce an initial set of best practice recommendations, concerning implementing interoperable metadata in agricultural learning repositories; </li></ul><ul><li>Deploying a pilot demonstrator of federating learning repositories on a global scale. </li></ul>
  6. 6. Community building <ul><li>Website – http://aglr.aua.gr/ </li></ul><ul><li>Discussion Forum - http://www.dgroups.org/groups/fao/Ag-LR-TF/ </li></ul><ul><ul><li>20 partners (CGIAR, GFAR, Intut, COL, etc.) </li></ul></ul><ul><ul><li>> 130 registered participants to the list from over 26 countries </li></ul></ul>
  7. 7. Inventory of repositories
  8. 8. e-Conference <ul><li>AgLR 2008, April 24 – June 15, 2008 </li></ul><ul><ul><li>http://aglr.aua.gr/econf.php </li></ul></ul><ul><li>dialogue around agricultural learning resources </li></ul><ul><li>explored the needs and requirements of stakeholders involved in the development and operation of agricultural learning repositories. </li></ul><ul><li>held as an electronically facilitated discussion </li></ul><ul><li>Follow up event : Workshop on Learning Technology Standards for Agriculture and Rural Development ( AgroLT), September 19, 2008 </li></ul><ul><ul><li>http://infolab-dev.aua.gr/agrolt/2008/ </li></ul></ul>
  9. 9. Best practices and recommendations <ul><li>survey of metadata schemas carried out in cooperation with the European Standardization Committee CEN/ISSS (WS-LT) </li></ul><ul><ul><li>http://www.cen.eu/isss/workshop/lt/ </li></ul></ul><ul><li>Report on “ Guidelines and recommendations for building metadata application profiles for agricultural learning resources ”. The report provides: </li></ul><ul><ul><li>overview of the way metadata application profiles are implemented </li></ul></ul><ul><ul><li>detailed summary and comparative analysis of approaches followed </li></ul></ul><ul><ul><li>guidelines and recommendations to existing or new developers of agricultural repositories </li></ul></ul>
  10. 10. Demo application <ul><li>In collaboration with Organic.Edunet and ARIADNE Foundation </li></ul><ul><li>Demonstrate the exchange of learning resources related to organic agriculture using Open Access Initiative Protocol for Metadata Harvesting (OAI-PMH) </li></ul><ul><ul><li>http://ariadne.cs.kuleuven.be/silo2006/NewFederatedQuery.do </li></ul></ul>
  11. 11. Evaluation of Application Profiles <ul><li>closer collaboration was established between WS-LT and AgLR-TF </li></ul><ul><li>joint team to analyze and provide recommendations </li></ul><ul><li>analysis, based on CWA15555 conformance aspects: </li></ul><ul><ul><li>documentation </li></ul></ul><ul><ul><li>scope & purpose </li></ul></ul><ul><ul><li>selection of elements </li></ul></ul><ul><ul><li>allowed vs. non-allowed modifications of base schema (conformance) </li></ul></ul><ul><ul><li>mapping of elements to base schema(s) </li></ul></ul>CWA 15555 (2006). Guidelines and support for building application profiles in e-learning http://www.cen-isss-wslt.din.de/sixcms_upload/media/3050/CWA15555.pdf
  12. 12. Process <ul><li>review & analysis of existing APs ( March’08 ) </li></ul><ul><li>mappings to relevant standards/schemas ( April’08 ) </li></ul><ul><li>comparative study ( May’08 ) </li></ul><ul><li>initial report with list of suggestions/recommendations to AP developers (June ‘08) </li></ul>
  13. 13. Evaluated APs <ul><li>Rural-eGov IEEE LOM AP ( ReGovLOM ) </li></ul><ul><li>FAO Agricultural Learning Resources AP ( FAO Ag-LR ) </li></ul><ul><li>CGIAR LOM Core AP ( CG LOM Core ) </li></ul><ul><li>BIOAGRO LOM AP </li></ul><ul><li>Biosci Education Network ( BEN ) AP </li></ul><ul><li>Sustainable Agriculture and Natural Resource Management Collaborative Research Support Program ( SANREM CRSP ) AP </li></ul><ul><li>TrAgLor LOM AP </li></ul><ul><li>Intute: Health and Life Sciences AP ( Intute AP) </li></ul><ul><li>EcoLearnIT LOM AP </li></ul>
  14. 14. Mappings
  15. 15. General observations (1/3) <ul><li>Most common generic elements </li></ul><ul><ul><li>Title ; Language ; Description ; Keyword (free text or restricted); and Coverage (geographical/spatial or temporal). </li></ul></ul><ul><li>life cycle of the resource </li></ul><ul><ul><li>Role of the entities that have contributed to the resource; Information about these entities; Date of contribution/production/publication. </li></ul></ul>
  16. 16. General observations (2/3) <ul><li>Technical characteristics </li></ul><ul><ul><li>format ; l ocation (such as URL) Size ; Some technical requirements for its viewing/execution. </li></ul></ul><ul><li>educational characteristics </li></ul><ul><ul><li>t ype of the learning resource ; Intended end user role ; E ducational context/level . </li></ul></ul>
  17. 17. General observations (3/3) <ul><li>copyrights </li></ul><ul><ul><li>Cost ; Copyrights and restrictions in use . </li></ul></ul><ul><li>formal classification </li></ul><ul><ul><li>type of classification; classification system used (very often AGROVOC or some other agricultural knowledge organization scheme); Terms used from the selected classification system. </li></ul></ul>
  18. 18. suggestions to developers (1/2) <ul><li>Always provide supportive documentation describing the AP </li></ul><ul><li>Document reference to the technical implementation of the AP and provide any relevant technical bindings </li></ul><ul><li>Document supportive use cases that help clarify its scope, purpose and users </li></ul><ul><li>Use the latest and most stable version of the base schema available </li></ul><ul><li>When using ad-hoc or extended value spaces make them available in a public namespace </li></ul>
  19. 19. suggestions to developers (2/2) <ul><li>Instead of substituting the ‘Langstring’ datatype with the simpler ‘Characterstring’, it is suggested that simplicity is sought though appropriate interface design </li></ul><ul><li>The non-allowed modification rules of CWA 15555 should be respected to ensure no problems when trying to export/exchange metadata </li></ul><ul><li>The elements most often occurring as mandatory in the existing APs should be considered for use also in other APs </li></ul>
  20. 20. Conclusion <ul><li>Well established community of partners </li></ul><ul><li>Cross-searching/sharing of data now possible through the mappings </li></ul><ul><li>guidelines to support and feedback to organizations that are designing, implementing and operating agricultural learning repositories </li></ul>
  21. 21. References <ul><li>CWA 15555 (2006). Guidelines and support for building application profiles in e-learning [Online]. Available at: http://www.cen-isss-wslt.din.de/sixcms_upload/media/3050/ CWA15555.pdf (verified 20 June 2008). European Committee for Standardization (CEN). </li></ul><ul><li>DC (2004). Dublin Core Metadata Element Set, Version 1.1: Reference Description. Dublin Core Org. </li></ul><ul><li>IEEE LOM (2002). Draft Standard for Learning Object Metadata, IEEE Learning Technology Standards Committee, IEEE 1484.12.1-2002. </li></ul><ul><li>ISO/IEC MLR (2005). Working Draft for ISO/IEC 19788-2 – Metadata for Learning Resources – Part 2: Data Elements, ISO/IEC JTC1 SC36. </li></ul><ul><li>Manouselis, N., Kastradas, K., Salokhe, G., Najjar, J., Stracke, C.M. and Duval, E. (2008). Results from a Study of the Implementation of Metadata Application Profiles in Agricultural Learning Repositories. in Proceedings of the Workshop on Learning Technology Standards for Agriculture and Rural Development (AgroLT 2008), 4 th International Conference on Information and Communication Technologies in Bio and Earth Sciences (HAICTA 2008), Athens, Greece, September 19, 2008. </li></ul><ul><li>Najjar, J., Ternier, S. and Duval, E. (2004). Interoperability of Learning Object Repositories: Complications and Guidelines [Online]. Available at: http://www.cs.kuleuven.ac.be/~najjar/papers/IadiswwwJournal.pdf (verified 20 June 2008). IADIS International Journal of WWW/Internet. </li></ul><ul><li>Stuempel, H., Salokhe, G., Aubert, A., Keizer, J., Nadeau, A., Katz, S. and Rudgard, S. (2007). Metadata Application Profile for Agricultural Learning Resources. in Proceedings of the 2nd International Conference on Metadata and Semantics Research (MTSR' 07), Corfu, Greece, October 2007. </li></ul>
  22. 22. Thank you! Gauri Salokhe ( [email_address] )

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