Metadata: how to remove the weakest link


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This presentation talks about the fundamental flaw in metadata which is its dependence on the user to competently annotate. It then introduces the OERScout technology framework which provides a way to remove the human from the metadata equation which is the weakest link.

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Metadata: how to remove the weakest link

  1. 1. Metadata How to Remove the Weakest Link Web-conferencing Series #1: OER in Asia: Key issues of sharing and searching 25th February 2014 Ishan Abeywardena MSc, MSc (Brunel), BSc (Bangalore), MIEEE, MBCS, MIET, MTA Deputy Dean and Senior Lecturer School of Science and Technology Wawasan Open University Penang, Malaysia
  2. 2. The Weakest Link
  3. 3. Curation Content repositories Portal repositories Content and portal repositories McGreal, R. (2010). Open Educational Resource Repositories: An Analysis. Proceedings: The 3rd Annual Forum on e-Learning Excellence, 1-3 February 2010, Dubai, UAE.
  4. 4. Metadata IEEE-LOM DCMI
  5. 5. LOM Casali, A., Deco, C., Romano, A. and Tomé, G. (2013) 'An Assistant for Loading Learning Object Metadata: An Ontology Based Approach', Interdisciplinary Journal of E-Learning and Learning Objects (IJELLO), vol. 9, p. 11.
  6. 6. DCMI the DCMI resource model Source: (29/08/2013)
  7. 7. LRMI
  8. 8. Some Existing Solutions • Federated Search: BRENHET2; OpeScout; Global Learning Object Brokered Exchange (GLOBE); and Pearson’s Project Blue Sky. • Semantic Search: OER-CC ontology; the “Assistant” prototype; the “Folksemantic” project; and “Agrotags”.
  9. 9. Federated Search User Metadata Federation Organisation Institution Repos Repos Consortium Institution Repos Repos Institution Repos Repos
  10. 10. Semantic Search Disease Prevention Vitamins Nutrition Apples Fiber Varieties Processed Products McIntosh Honeycrisp Juice Sauce Cider Pink Lady
  11. 11. However…the issue is
  12. 12. Removing the Weakest Link
  13. 13. A Text Mining Algorithm  READS  LEARNS  RECOMMENDS
  14. 14. What is OERScout
  15. 15. The ‘Bag of Words’
  16. 16. Term Dictionary
  17. 17. Making the Connection
  18. 18. Keyword-Document Matrix (KDM)
  19. 19. OERScout
  20. 20. About… Ishan Abeywardena Deputy Dean and Senior Lecturer, School of Science and Technology, Wawasan Open University, Penang, Malaysia • • • • MSc in Wireless Enterprise Business Systems, Brunel University, UK. MSc in Engineering Management, Brunel University, UK. BSc in Computer Science, Bangalore University, India. PhD Candidate in Computer Science, University Malaya, Malaysia. Areas of specialisation: text mining, metadata, faceted search Professional Member of – Institute of Electrical and Electronic Engineers (MIEEE) – British Computer Society (MBCS) – Institution of Engineering and Technology (MIET) – Microsoft Technology Associate (MTA) Official Profile: Professional Profile: Research Profile: Tech Blog: E-mail:
  21. 21. Media Sources • • • • • • • • • •,_Cairo_02.JPG