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Domain Knowledge is the content repository of a courseware system consisting of a series of learning objects. However, the unstructured and inconsistent naming of domain knowledge components does not permit knowledge transfer across diverse collaborative systems due to differences in architecture, format and representations. To address this identified problem, the authors formulate an ontological matching algorithm that provides a sharable knowledge in collaborative learning environment in this paper. The Algorithm employs Hybrid Similarity Measure to compute both Concept and Relational similarity values of the various input graphs-learning objects.
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