关键词: 林产品, 贸易信息网站, 用户兴趣建模, 复合关键词, 向量空间模型

Abstract:

Based on the features of the forest products trading information, a compound keywords vector space model was utilized to represent the user interest model of the forest products trading information website. Every compound keyword in the vector space consists of three keywords, which are supply and demand classification, the name of the forest product and the production place, and some information about the specifications, price and the company name of the forest products. Every compound keyword has a user interest value. The learning and updating of the user interest model were realized through the browsing, registering and releasing behaviors of the users and introducing the forgetting factors for the interest values, respectively. The persistent interests and the temporary interests of the users were distinguished by introducing a temporary interests group. Finally, the recommendation algorithms based on the contents filtering were proposed based on our user interest model, and its advantage was demonstrated by comparison experiments.

Key words: forest product;trading information website;user interest model;compound keywords;vector space model