Semantic Web Technologies for the Integration of Learning Tools and Context-aware Educational Services
Zoran Jeremić1, Jelena Jovanović1, Dragan Gašević2
1University of Belgrade, Serbia2Athabasca University, Canada
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Motivation
Design patterns Recurring solutions to software design problemsFound in real-world application development
Integrative view to problems
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Motivation
Current learning support Individual use of toolsLimited support for
• Exchange data about the activities between tools• Inter-tool learning
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Pedagogical Foundation
Social constructivismSocial Web was waited for decades!
Learning through design Engagement theory
Relate, create, donate Genex (Generator of Excellence) framework
Collect, relate, create, donate Project-based learning
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Learning Scenario
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Context-aware
Proactive
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Learning Context Ontology
Learning Object Context Ontology (LOCO) Connects
IMS LD, IMS LIP, IEEE PAPI, IEEE LOM, FOAF, SOIC, ALOCoM, …
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Learning Context Ontology: Extension
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Domain Ontology
Software design patterns
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Moodle
ArgoUML
LOCO-Analyst
Yahoo! Design Pattern LibraryPortland Pattern RepositoryHillside.net Pattern Catalog
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Semantic Annotation and Indexing
ContentLearning objectsPublicly accessible repositories of DPs
• Yahoo! Design Pattern Library, Portland Pattern Repository, Hillside.net Pattern Catalog, …
Internally produced content • Chat messages, forum messages, and ideas
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Semantic Annotation and Indexing
Technical approachAnnotation platform
• KIM
Search and indexing• TF-IDF to find document relevance for DP• Cosine similarity to find most relevant document
Mapping between tags and ontology concepts
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Educational Services in DEPTHS
Context-aware learning servicesRetrieval
• Web resource• Relevant internally produced resources• Experts, teachers and peers discovery
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Educational Services in DEPTHS
Submissions
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Evaluation
Performed in February 2009 University of Belgrade with 13 students
Perceived Effectiveness of DEPTHS for learning DPsEffectiveness of project-based learning approachUsefulness of integrated tools Usefulness of access to relevant resources and sharing of information affects learning
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Evaluation
Students’ perception of learning with DEPTHSComparing to traditional learning
Not very useful Less effective Same More effective
0% 15.38% 53.85% 30.77%
1 2 3 4 5Web resource finding 0.00% 0.00% 7.69% 15.38% 76.92%
Internal content finding 0.00% 0.00% 15.38% 69.23% 15.38%
Peer finding 0.00% 0.00% 15.38% 46.15% 38.46%
Brainstorming 0.00% 7.69% 15.38% 46.15% 30.77%
Stimulates control 0.00% 0.00% 23.08% 46.15% 30.77%
Usefulness of integrated tools and services30.77% reported technical problems
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Conclusion
DEPTHSProject-based learningIntegrative and collaborativeContext-aware and proactiveUbiquitous knowledge management & sharing
Future work Workplace learning and workingPortfolio management
Thank you!
Questions?
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