Semantic Web Technologies for the Integration of Learning Tools and Context-aware Educational Services

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?