The Vertical Search Engine For Campus Design And Implementation,

With the rapid development of the Internet,the information of web pages is more than before.The general-purpose search engines provide service for all users.By means of general-purpose search engines,users can conveniently visit every node of the Web including which they don't kown before and get more useful information.With the rapid development of the Internet,the information of web pages is more than before.The general-purpose search engines provide service for all users.By means of general-purpose search engines,users can conveniently visit every node of the Web including which they don't kown before and get more useful information.However,with the number of web increacing,many general-purpose search engines have many faults,such as web pages are too many and repeat serious,datas update slowly,the pages in accord with users' require are fewand even the jamming phenomenon of network often happen because of the spiders of general-purpose search engines and so on.The emergence of vertical search technology brings hope to the resolution of these issues.It is for a specific area.Its datas are valid for users' subject and consistent with a high degree of searching requests.In recent years,various areas of vertical search engines have been explored one after another.After discussing the technology of Web information retrieval both on theory and application to the field of education schools and web-objects,,this thesis discusses the applications of the vertical search engine on getting and analysing pages,sorting index and so on.First the thesis introduces the definition and the working principle of general-purpose search engine,then discusses vertical search technology which is popular in nowdays.On the base of comparing performance and realizing the cost,the thesis designs spiders of vertical search engine and has done a study on page classification and information struction.Finally it uses the efficient framework of Lucene to achieve indexing and searching,and attempts some methods in the optimization of system.