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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
The Weakest Link
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.
Metadata

IEEE-LOM
DCMI
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.
DCMI

the DCMI resource model

Source: http://dublincore.org/documents/abstract-model/ (29/08/2013)
LRMI

http://creativecommons.org/tag/learning-resource-metadata-initiative
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”.
Federated Search
User
Metadata

Federation

Organisation
Institution
Repos

Repos

Consortium

Institution
Repos

Repos

Institution
Repos

Repos
Semantic Search

Disease Prevention
Vitamins

Nutrition
Apples

Fiber

Varieties
Processed Products

McIntosh

Honeycrisp

Juice
Sauce

Cider

Pink Lady
However…the issue is
Removing the Weakest Link
A Text Mining Algorithm

 READS
 LEARNS
 RECOMMENDS
What is OERScout
The ‘Bag of Words’
Term Dictionary
Making the Connection
Keyword-Document Matrix (KDM)
OERScout
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: http://www.wou.edu.my/IshanAbeywardena.html
Professional Profile: http://www.linkedin.com/in/ishansa
Research Profile: http://www.researchgate.net/profile/Ishan_Abeywardena/
Tech Blog: http://www.ishantalks.com
E-mail: ishansa@wou.edu.my
Media Sources
•
•
•
•
•
•
•
•
•
•

http://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Multimedia_icon.png/120px-Multimedia_icon.png
http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Nuvola_multimedia.png/120px-Nuvola_multimedia.png
http://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Open_Clip_Art_Library_Piggy_Bank.svg/120pxOpen_Clip_Art_Library_Piggy_Bank.svg.png
http://commons.wikimedia.org/wiki/File:Active_learning_-_jigsaw_map_of_Southeast_Asia.jpg
http://commons.wikimedia.org/wiki/File:%D0%9A%D0%BE%D0%BF%D0%B8%D1%8F_800px-Ua-er9m-558-20070728.jpg
http://commons.wikimedia.org/wiki/File:Public_Bus,_Cairo_02.JPG
http://commons.wikimedia.org/wiki/File:Polski_Fiat_126p_in_Krak%C3%B3w_(MWM_2010).jpg
http://commons.wikimedia.org/wiki/File:PLM_2011_64_Jetalliance_Lotus.jpg
http://www.youtube.com/watch?v=8YkbeycRa2A
hydrodictyon.eeb.uconn.edu

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Metadata: how to remove the weakest link