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Automatic verification of "isa" relations is a basic problem in knowledge acquisition from text. We present an iterative method of "isa" relation verification based on some features. It initially acquires a set of "isa" relation features. Secondly these features are changed into a set of production rules. Then the candidate "isa" relations acquired from Chinese...
To construct an accurate and comprehensive user model is required in e-learning. User model can describe explicitly the learning goals and information needs about an individual learner. In this paper, we analyze learner characters and propose an ontology-based user model, which involves five modules. After that, we separately introduce the representation methods and run mechanisms of the five modules...
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