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A user model is essential to support personalization services. However, the user models that are used in most systems are designed in an ad-hoc manner and often related to their application domains. It hinders service interoperability and increases the amount of work. In this paper, we focus on defining a general user model in order to represent user information and the user context. This paper contributes two points: a survey on existing context based systems and a user model for personalization. The survey analyses previous context based systems and provides different kinds of features used in their systems. Based on this survey, we propose a user model to capture user information and contexts for personalization application.
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Joung et al. (2009) studied this question.
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