(Semantic web) services for e-learning

Question

1. What are the contributions mentioned in the paper "(semantic web) services for e-learning" ?

2. What is the advantage of using RDF?

3. What is the main advantage of a well-formed ontology?

4. What is the main advantage of SOAs?

Accepted Answer

In this paper, the authors argue that these efforts could benefit if they also drew on Semantic Web technologies to create ( Semantic Web ) Services – services that use resources described on the semantic web.. The authors present a demonstrator which uses three such services to search over question bank data.. The authors show how the use of Semantic Web technologies not only promotes high-quality and interoperable metadata, but that it also enables reasoning rules to be declared that make developing new services easier.

Accepted Answer

Using RDF allows the project to utilize semantic benefits such as inference and the ability to respond to different queries not only with exact question matches, but with other questions that the system feels will be relevant given its knowledge of the domain that is provided by the topic map.

Accepted Answer

Well-formed metadata: Constructing an ontology forces information designers to consider all of therelationships between all their resources and it also encourages them to think about how to arrange their meta-data classes into hierarchies.

Accepted Answer

SOAs are an attempt to modularize large complex systems in such a way as they are composed of independent software components that offer services to one another through well-defined interfaces.

Accepted Answer

The Similar Search Service relies on additional ontologies being used to annotate the same resource used in the Basic Search Service, drawing on the interoperability advantage of Semantic Web resources.

Accepted Answer

When coupled with the Semantic Web they promise significant advantages forinteroperable access, management, and manipulation of the complex resources typically found within the e-learning domain.

Accepted Answer

In order to use semantics that are shared across a number of applications it is necessary to form a consensus in the domain at the conceptual level.

Accepted Answer

The view in the Semantic Web community is that an ontology is the best vehicle in this context to formally hold a specification (of the conceptualisation) that can be shared within the community to describe semantics accurately and consistently.

Accepted Answer

This is because of the complexity of learning resources and the ability of semantic meta-data to make some of that complexity machine readable.

Accepted Answer

Because the Web Services themselves had been developed using WS-I, with a WSDL-first approach, it was straightforward to access them from the two different SOAP implementations (Axis for the Java Web Services, and SOAP4R for the Ruby website).

Accepted Answer

These would allow learners to semantically annotate their learning experiences with elements such as roles, events, and environments, as well as contribute to the domain knowledge itself in the form of classes, relationships, taxonomies, and rules.

Accepted Answer

The Semantic Search Service leverages the semantics of the resources, (and the fact that they share one of their ontologies) by encoding a simple reasoning rule using Jena; thus demonstrating the reasoning advantages of Semantic Web resources.

Accepted Answer

The authors identified three services that would build upon the use of the ontologies:• Basic Search (Question)• Similar Search (Question+Subject)• Semantic Search (Question+Subject+Syllabus)These are implemented as Web Services.

Accepted Answer

The authors believe that more complex applications could be very powerful, for example by automatically extracting an appropriate set of questions from a question bank to examine a given syllabus, or by modelling competencies and using that model to build an appropriate test.

(Semantic web) services for e-learning

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1. What are the contributions mentioned in the paper "(semantic web) services for e-learning" ?

2. What is the advantage of using RDF?

3. What is the main advantage of a well-formed ontology?

4. What is the main advantage of SOAs?

5. What is the main purpose of the similar search service?

6. What is the advantage of using the Semantic Web?

7. How do you use semantics to share across a number of applications?

8. What is the way to describe semantics?

9. Why do the authors believe that the semantic aspects of learning content are the key to facilitating large scale?

10. Why was it easy to access the Web Services from the two different implementations?

11. What would allow learners to annotate their learning experiences with elements such as roles, events,?

12. What is the advantage of using Semantic Web resources?

13. What are the services that would build upon the ontologies?

14. What would be the powerful way to extract questions from a question bank?

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Citations

Association of learning styles with different e-learning problems: a systematic review and classification

Knowledge and intelligent computing methods in e-learning

Impact of total quality management factors on knowledge creation in the organizations of Bangladesh

Semantic SPA framework for situational student-project allocation in education

Ontology driven framework for assessing the syllabus fairness of a question paper

References

Ontologies and Semantic Web for E-Learning

Ontologies and the semantic web for E-learning

Authoring educational topic maps: can we make it easier?

Knowledge management in an e-learning system

Application of ontology to knowledge management in Web based learning

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