Web structure based Web search is a process of using the 
hyperlink structure of the Web as an information source. The 
area of Web mining focuses on the knowledge issues on 
Web, using Web structure mining and introduced the Link 
mining, as well as block-level link mining. There are two 
popular algorithms HITS and PageRank, which are used for 
mining the Web by utilizing its structure. It also explains that 
data pre-processing is an important step in the knowledge 
discovery process. Pre-processing internally depends upon 
those two algorithms, for which to know about Website 
structure and hit count of the page in Website [26]. Table III summarizes the various approaches for Web 
structure based Web search. Most of the works are only 
concentrating on link based rather than the text content. 
Integration of soft computing techniques can overcome the 
above problem. But this approach also has few limitations.