关键词: 信息过滤, 林产品贸易信息, 信息推送, 信息服务, 推荐系统

Abstract: Information push service has been widely applied to various e-commerce sites. However, there are some defects when using the two wildly used information filtering techniques in the process of forest products trading. On the base of summing up the features of forest products trading information filtering, the cascade filtering technique is brought up. The technology is based on the different interest of forest products trading users, the different level of users’ needs, the different weight of forest products trading information’s feature item. After getting the vector space model of forest products trading information and analyzing the structure of users’ interest feature vector, the cascade filtering technique is used to exactly meet the user’s needs. It is brought up by strictly filtering the user’s dominant needs firstly, roughly filtering the user’s dominant needs secondly, filtering the user’s implicit needs finally. The experimental results show the cascade filtering technique can efficiently filter the user’s satisfied information.

Key words: information filtering, forest products trading information, information push, information service, recommender system