一种基于网页元数据的用户访问行为建模方法

针对现有行为建模方法难以描述行为语义的问题,提出了一种分层次的用户行为元模型以及一种基于页面元数据的Web用户行为建模方法.该方法从URL的访问、活动、事务3个层次建立Web用户的行为模型,并对页面元数据获取以及在URL的访问、行为、事务之间转化等问题进行了说明.方法及模型不仅描述了用户访问序列信息,还增加了访问内容的局部主题和关键词等信息,为进一步获取Web用户的行为语义特征奠定了很好的基础.通过西安交通大学的Web教学系统验证表明,利用所提方法获得的序列划分准确率达86%以上.

Method for User Browsing Behavior Modeling Based on Web Page Metadata

A hierarchical meta-model of user behaviors and a method for user behavior modeling based on the metadata in pages were proposed to overcome the difficulty of the existing methods in describing the semantics of behavior.In the method,the behavior model of web users is built with three levels,i.e.,URL accesses,activities and sessions.Furthermore,both the abstraction of metadata in pages and the transformation among URL accesses, activities and sessions are specified.The behavior models generated by the method can describe not only the information of user accessing sequence,but also the additional information including local themes of pages content and keywords . The information gives the foundation for acquiring the semantic characteristics of user behaviors.Tests performed in web-based distance learning system of Xi'an Jiaotong University show that the accuracy of activity partition by the proposed method exceeds 86%.