With the requirement of user s specific information service,a framework of personalized information filtering system,based on Agent,is proposed and implemented in this paper.

In order to break the bottleneck which restricts personal information management and realize the precise matches between service and customer and between service and requirement, this paper puts forward a new personal information management model based on K3.

The Technology support to the individualized information service in libraries;

On the basis of the implication, characteristics and importance of individualized information service, the paper illustrates the five aspects of its pattern and contents, and points out problems and prospects of individualized information service.

But with the limited computing capability, memory slit and screen, it is very important for the information to be concise, accurate and to be what the user really want So we need information personalization.

This paper discusses the concept,approach and philosophy of personalized information service,and justifies that the personalized information service is a trend of college development and it brings an unprecedented development opportunity.

As two basic information filtering approaches, content-based filtering and collaborative filtering are widely used in personalized information service systems.