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An algorithm named SMHP is proposed, which aims at improving the efficiency of Topic Detection. In SMHP, a T-MI-TFIDF model is designed by introducing mutual information (MI) and enhancing the weight of terms in the title. Then VSM is constructed according to terms' weight, and the dimension is reduced by combining H-TOPN and PCA. Then topics are grouped based on SMHP. Experiment results show the...
With the rapid growth of the web, it will become more and more difficult to provide relevant information to the users to cater to their needs. The web structure mining plays an important role in this approach. There are two classic ranking algorithms HITS and PageRank commonly used in web structure mining. These two algorithms treat all links equally while assigning rank scores. This paper provides...
Link Analysis plays an important role in Web Information Retrieval. Most of the existing link analysis algorithms use link as the main factor to determine the importance of a Web page, which can not reflect complicated relationships among Web pages. In this paper, we propose G-HITS (Gravitation-Based HITS), which condenses useful information associate to a Web as its "mass ", and reflects...
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