User Model for Cross System Personalization Service Based on Domain Ontology
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At present most personalization service systems use Keywords or keyword vector space models to express users' personal preferences, but it severely restricts the sharing and reusing of user model between different personalized systems.Focusing on the problem, this paper proposes a user model called DOBUM(Domain Ontology-Based User Model) and presents its structure.To realize the quantification of users' personal preference, the definition of personalized interest level is introduced.The application process of DOBUM in the group user modeling is presented.The model is proved to reflect users' interests exactly and have strong renewal ability and extendibility by analyzing the contrastive result on data.