基于主题特征和时间因子的改进PageRank算法

经典PageRank算法单纯地考虑到对网页的链接结构进行分析,而不能考虑到网页在搜索主题方面的相关性和权威性,以及用户对新旧网页的依赖程度的不同.针对经典PageRank算法存在的上述缺陷,综合网页的主题特征和时间特征两个因素,提出了一种改进的PageRank算法WTPR(weighmd topic PageRank).该算法通过网页链接分析和内容分析来解决网页的权威程度和相关程度,通过时间因子实现PageRank值随时间的变动而浮动.仿真结果表明,改进后的算法与PageRank算法相比获得了更好的效果.

Improved PageRank algorithm based on topic character and time factor

The famous ranking algorithm PageRank just analyzed the link structure of web pages,but did not consider the relativity and authority of web pages,as well as the different degree of people's depending on new web pages and old Web pages.To improve the limitations described above all,the weighted topic PageRank(WTPR) algorithm is presented,combining with topic character and time character.Authority and relevance degree are met by analyzing the link structure and contents of web pages respectively;PageRank val...