On Personalized Service of Mobile Phone Library Based on Contextual Model

Mobile Phone library is a demand pattern of personalized information services in digital library, and an expansion of digital library in the environment of mobile network. The provision of personalized services requires the support of contextual model owing to the changeability, dynamic and context-sensitiveness of user needs in network environment. So we used contextual model in personalized services of mobile phone library, and set contextual model and user model in wireless network and Internet, to perceive and aware of current and historical context of the user, adaptively to adjust supplied information for the user, and to supply personalized information retrieval, personalized information recommendation and personalized information push services and so on for the use. When we apply contextual model to personalized services of mobile phone library, we need to pay attention to solving information security of users, accuracy and dynamic of accessing to users' personalized information, integration of information resources and intellectual property in digital library, contradiction between complex system and set of mobile phone and so on.