Topic Distillation Algorithm for Vertical Search Engine
Lintao Lv, Liping Chen, Hongfang Zhou · Jisuanji gongcheng · 2009
HITS algorithm assigns same weight to links between Web pages,which results in topic drift.Aiming at this problem,a new improved HITS algorithm is proposed by assigning appropriate weights to links according to the link value and page semantic topic similarity.Improved HITS algorithm highlights the difference of links importance.Experiments show that the proposed algorithm can improve relevance ratio by 13%～42%.Furthermore,it can well avoid topic drift and improve the accuracy of information collection.It has important theoretical and practical values for vertical search engines research.