Semantic web and distance education
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The Contribution Of Semantic The Contribution Of Semantic Web Technologies To Distance Web Technologies To Distance Learning And Education Learning And Education ZOU International Conference 16-17 June 2011 Dydimus Zengenene Erasmus Mundus Scholar International Master in Digital Library Learning (DILL) University College of Oslo, University of Tallinn, University of Parma
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Transcript of Semantic web and distance education
The Contribution Of Semantic The Contribution Of Semantic Web Technologies To Distance Web Technologies To Distance
Learning And EducationLearning And Education
ZOU International Conference16-17 June 2011
Dydimus Zengenene
Erasmus Mundus Scholar International Master in Digital Library Learning (DILL)
University College of Oslo, University of Tallinn, University of Parma
ContentsContents
Why we need the semantic web
Technologies of the semantic web
Distance education
Application of the semantic web
Conclusion
IntroductionIntroduction
Web increasingly becoming key info source
The google age
but the web is dump
The semantic webThe semantic web
Definition of the semantic web
• Current web relies on Syntax
• Need to base it on Semantics
• Machine understandability
Why do we need itWhy do we need it
Searching:
• Synonym• multiple words same meaning
• Homonym• same spelling different meanings
Why do we need itWhy do we need it
• Integration
• Data mining
Why do we need itWhy do we need it
To reduce time, costs and errors that are
incurred in the search, manipulation and
utilization of web based resources.
What is it?What is it?
An improved version of the current web,
which can provide better services at
lower costs by way of giving machines
the power to understand the meaning of
web documents.
Technologies of the semantic webTechnologies of the semantic web
What needs to be done:Extend the current markup with semantic
markup. ◦Add metadata annotations that describe
content / function of resources
Have a standard web ontology language
Use ontologies to provide vocabulary for the annotations (Bechhofer, 2008)
Technologies of the semantic webTechnologies of the semantic web
• Metadata• Data about data (a layer to make the
web of data)
• OWL• ontology language (RDF Schema +
new constructions of expressiveness)
Technologies of the semantic webTechnologies of the semantic web
• Ontology• No agreement on what is is
“a shared common vocabulary so that search engines, agents, authors and users can communicate” (Bechhofer, 2008)
• Has to be domain specific
Technologies of the semantic webTechnologies of the semantic web
Distance educationDistance education
Characteristics
• Student teacher seperation
• technical media to unite them
• Two way communication
• absence of permanent the learning groups
Distance educationDistance education
Current trends:College age (lifelong learning)
Information explosion
Learner centred education
Increasing higher edu collaboration
Smaller gap local and distance edu
Application of the semantic webApplication of the semantic web
Current challenges:Student-teacher communication
Collaborative learning environment
Personalized services
Precision in information retrieval
Make work easier for staff
Application of the semantic webApplication of the semantic web
Learning Environments
Systems that allow:
Setting online courses
Communication
Managing students’ activities
Eg. IVA, Moodle, Blackboad
The LOCO AnalystThe LOCO Analyst
Defined as:
“it is a framework for educational feedback based on semantic technologies which exploits the nature of ontologies to integrate various sources of information covering the same domain knowledge”
Some of the key people behind: Jelena Jovanovic´ university of BelgradeDragan Gasˇevic´Athabasca University.Christopher Brooks University of SaskatchewanVladan Devedzˇic´ university of Belgrade
Three tier architectureThree tier architecture
Digital Library SystemDigital Library System
Some digital library systems already utilising the Semantic technology
Semantic Interoperability of Metadata and Information in unLike Environments (SIMILE)
JeromeDL
Advantages of semantic DLsAdvantages of semantic DLs
No need for exact word in the search; (inference power)
based search and facet searchA mechanism of interoperability between
different library systems access is not limited to one library
Advantages of Semantic DLsAdvantages of Semantic DLs
Users get involved in collaborative projects with the help of these libraries
Possibility to share information and personal experiences
ChallengesChallenges
Existing metadata of the digital libraries has to be lifted to a semantic level.
The social semantic digital libraries might produce amateurish data by some users and they offer limited security
(Aloitaibi 2010)
Challenges of attaining the Challenges of attaining the semantic websemantic web
Web page markup problem
Common vocabulary problem
Query building problem:
Conclusion and recommendationsConclusion and recommendations
There are great benefits to gain from sematic technologies in Distance Education
Universities must invest in this area
Must start implementing the posibilities
Universities must keep track of the new developmets
