Metadata: how to remove the weakest link

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This document discusses key issues around sharing and searching for open educational resources (OER) in Asia. It identifies the weakest link in OER repositories as poor metadata and outlines approaches to address this such as text mining algorithms that can read, learn from, and recommend metadata to improve search and discovery of resources. The document provides an overview of the OERScout tool which uses text mining of resource content and metadata to generate keyword mappings to strengthen metadata quality and enhance search.

Technology

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

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.

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

A Text Mining Algorithm

 READS
 LEARNS
 RECOMMENDS

Media Sources
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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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Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application. In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics. Length: 30 minutes Session Overview ------------------------------------------- During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana: - What out-of-the-box solutions are available for real-time monitoring JMeter tests? - What are the benefits of integrating InfluxDB and Grafana into the load testing stack? - Which features are provided by Grafana? - Demonstration of InfluxDB and Grafana using a practice web application To view the webinar recording, go to: https://www.rttsweb.com/jmeter-integration-webinar

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JMeter webinar - integration with InfluxDB and Grafana

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Metadata: how to remove the weakest link

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. The Weakest Link

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.

5. Metadata IEEE-LOM DCMI

6. 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.

7. DCMI the DCMI resource model Source: http://dublincore.org/documents/abstract-model/ (29/08/2013)

8. LRMI http://creativecommons.org/tag/learning-resource-metadata-initiative

9. 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”.

10. Federated Search User Metadata Federation Organisation Institution Repos Repos Consortium Institution Repos Repos Institution Repos Repos

11. Semantic Search Disease Prevention Vitamins Nutrition Apples Fiber Varieties Processed Products McIntosh Honeycrisp Juice Sauce Cider Pink Lady

12. However…the issue is

13. Removing the Weakest Link

14. A Text Mining Algorithm  READS  LEARNS  RECOMMENDS

15. What is OERScout

16. The ‘Bag of Words’

17. Term Dictionary

18. Making the Connection

19. Keyword-Document Matrix (KDM)

20. OERScout

21.

22. 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

23. 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

Metadata: how to remove the weakest link

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