Facing the challenge of modern information environment, libraries and intelligence department must develop the service mechanism of profession, dissertation and individuality, supporting the gain and innovation of knowledge of users at fist hand, and advancing their capability of service as same as the effect of auspice.Personalized Information service of the library can be divided into several categories, such as personallized postal, Intelligence agent, push technology, vertical postal. In some representative library and intelligence angency,such as MyLibrary of NCstate and MyLibrary of Las,buliding personalized information service system has became a kind of direction of universities'library.We must combine the principia with the character of current institution during the course of exploitation. We should make use of advanced computer technology and consult foreign successful cases, adopting the exploitation mode of collectivize cooperation, affording friendly interface and all-sided function. In the course of design and exploitation, we should protect users' privacy and assure its safe run of the system.
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