downsizing method

In the following part of this thesis, HITS algorithm is discussed and the topic drift problem of HITS algorithm is also analyzed. Then root-set eigenvector projection method and base-set downsizing method are implemented to improve the HITS algorithm.
本文对HITS算法进行了重点研究,对传统HITS算法易产生主题偏移问题这一缺点进行了分析,并针对这一问题,使用根集向量投影法和基本集缩减法对HITS算法加以改进,接着在根集向量投影法的基础上,提出了根集向量加权投影法和基本集向量加权投影法,以更好的实现权威网页搜索。