| With the fast development of network, traditional medium is changing into network medium. Netnews publication and service develop very fast. Along with the increasing quantities of netnews and the heightening of users' requests, the offering of personalized service in news service system becoming an important way for netnews medium to search development. This is because that personalized service can provide different services for different users and meet requests of different background, aim and time.Because Web services architecture has the quality of open, flat free and well interaction, so it could make up the shortage of traditional news service. The research of this paper is carried out around the personalized service based on Web services architecture. First, this paper describes the service principium and service process of news service system based on Web Services. Then, based on this system, we introduce context to implement personalized service. Context constitutes information about clients and their environment. So, context contains, e. g., a consumer' s name, address and current location, the type of client device the consumer is using, or all kinds of perfences regarding the communication, the format of the Web services' replies and so on. Context may be used by Web services to provide clients with a customized and personalized behavior. In this paper, we first use user' s personalized information to define context, and then uses CBR to reason the user' s case which is created based on user' s news request. After using a matching case to amend the user' s case, by news search, the system provide the results which represent the user' s requests in the maximum degree for users. It implements the personalized news service and improves the quality of the service. |
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