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The Key Technique Research of Focused Crawler

Author: LiJingJing
Tutor: ZuoWanLi
School: Jilin University
Course: Software Engineering
Keywords: Reptile theme URL queue priority Page correlation
CLC: TP393.092
Type: Master's thesis
Year: 2008
Downloads: 440
Quote: 3
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Abstract


In view of the existing general-purpose search engine in the search process , the gradual emergence of a range of issues : the return to the large number of users do not care about the page , limited search resources with the contradiction between the unlimited resources of the network is further deepened , constantly enrich the network data in the form . General reptiles crawling strategy can no longer meet the retrieval of a large number of web resources . Shark-search algorithm based on the combination with Pagerank algorithm calculated the the the URL queue priority theme reptiles comprehensive crawling strategy . Crawling strategy based on the contents of the page on the crawling effect ; link - based crawling strategy focuses on the link structure of the network , know how to discover authoritative pages , through the authority 's website to discover high priority links . However , both the crawling process , the harvest rate tend to be obvious downward trend . Integrated crawling strategy based on the above combination , on the basis of the improved Shark-search algorithm , combined Pagerank algorithm , both web-based authoritative links , while taking into account the web page , to avoid a great extent Subjects offset problems, topic .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > The application of computer network > Web browser
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