Study on theme-drift of hyperlink-induced topic search algorithm
Yongping Zhang · Journal of Computer Applications · 2009
Hyperlink-Induced Topic Search (HITS) algorithm is a classic hyperlink-based algorithm. But the HITS algorithm is purely based on the hyperlink,and it ignores the text of the linked page and does not distinguish the importance between the different hyperlinks. Because of this,a theme-drift phenomenon often happens when using HITS algorithm. The improved algorithm based on the HITS algorithm makes use of the classic tf-idf algorithm to calculate the related weight between the linked page and the query. The improved algorithm can make the search engine ranking results more in line with the query,and the corresponding precision rate has also been greatly improved.