| The rapid development of the Internet, make the existing search engine is facing a huge challenges, in the face of the numerous desultorily, how can search engine users need to quickly and accurately the information retrieval, it is very important. Therefore, search engine ranking algorithm will become the focus of many search engines is one of the key problems.In the current search engine ranking algorithms, web-based link structure of the classical algorithm is often mentioned Hits the PageRank algorithm and the algorithm, these algorithms are also a number of domestic and foreign scholars and researchers of the topic, and also made some achievements, the formation of some of the more sophisticated algorithm based on PageRank algorithm and the integrated Hits improved algorithm.This paper first describes the domestic and international search engine ranking algorithm research background, and the development of the status quo, and then analyzes the working principle of search engines and key technologies, and evaluation of search engines three indicators for this prototype system testing and verification algorithms to provide some basis. Then, the analysis of the traditional PageRank algorithm and the improved PageRank algorithm, analyzes their existing advantages and disadvantages, for us to further improve the PageRank algorithm provides the possible.Conventional algorithms and improved algorithm PageRank, combining classification technology and time of theme similarity factor of feedback algorithm of comprehensive PageRank algorithm, the improved algorithm is mainly from the web page link structure pretreatment, the three aspects of PageRank algorithm was improved, the proposed algorithm based on a comprehensive improvement of PageRank algorithm. The prototype system has been designed and, at the same time, to improve the algorithm is verified.Verified,the improved algorithm can improve the precision of search engines,at the same time,it can improve the system's recall rate. |
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