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Semantic Web Application

Semantic Web Application. E-Learning Presented by : Ayesha Khan Umair Uddin Shaikh. Outline. Introduction Problem Contribution of Semantic Web Technology Ontologies for E-Learning. Introduction .

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Semantic Web Application

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  1. Semantic Web Application E-Learning Presented by : Ayesha Khan UmairUddinShaikh

  2. Outline • Introduction • Problem • Contribution of Semantic Web Technology • Ontologies for E-Learning

  3. Introduction • TheWorldWideWeb is currently changing many areas of human activity, among them learning. • Traditional style of Learning • Educator Driven • Linear Access • Time Dependent & Locality Dependent • The emergence of the Internet has paved the way to implement new educational processes. Either for Academic Learning or Organizational Learning.

  4. Problem • All e-learning solutions based majorly on meta-data (XML-like approaches) which is lack of semantics. • Problems areas are • Combination of materials by different authors may be difficult to search. • Retrieval may not be optimally supported • The retrieval and organization of learning resources must be made manually (personalized automated agent). • These kinds of problems may be avoided if the Semantic Web approach is adopted.

  5. Contribution of Semantic Web Technology • Supports both semantic querying and the conceptual navigation of learning materials. • Semantic Web satisfies some key eLearning characteristics: • Learner Centric: Learning materials, possibly by different authors, can be linked to commonly agreed ontologies. • Flexible Access : Knowledge can be accessed in any order the learner wishes, according to her interests and needs. • Integration : The Semantic Web can provide a uniform platform for the business processes of organizations, and learning activities can be integrated in these processes.

  6. Ontologies for E-Learning • In an eLearning environment it makes sense to distinguish between three types of knowledge, and thus of ontologies: content, pedagogy, and structure. • A content ontology describes the basic concepts of the domain in which learning takes place (e.g. history or computer science). Includes relations between these concepts, and some basic properties. • For example, the study of Classical Athens is part of the history of Ancient Greece, which in turn is part of Ancient History. • The ontology should include the relation “is part of” for above said example

  7. Cont… • Pedagogical issues can be addressed in a pedagogy ontology. For example, material can be classified as lecture, tutorial, example, walkthrough, exercise, solution etc. • A structure ontology is used to define the logical structure of the learning materials. Typical knowledge of this kind includes hierarchical and navigational relations like previous, next, hasPart, isPartOf, requires, isBasedOn etc. • Relationships between these relations can also be defined; for example, hasPart and isPartOf are inverse relations.

  8. Thank you ….

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