PageRank: Difference between revisions
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In [[information retrieval]], '''PageRank''' is algorithm developed by Larry Page and Sergey Brin while at [[Sanford University]].<ref name="isbn1-59184-141-0">{{cite book |author=John Battelle |title=The Search: How Google and Its Rivals Rewrote the Rules of Business and Transformed Our Culture |publisher=Portfolio Trade |location= |year= |pages= |isbn=1-59184-141-0 |oclc= |doi=}}</ref> | In [[information retrieval]], '''PageRank''' is algorithm developed by Larry Page and Sergey Brin while at [[Sanford University]].<ref name="isbn1-59184-141-0">{{cite book |author=John Battelle |title=The Search: How Google and Its Rivals Rewrote the Rules of Business and Transformed Our Culture |publisher=Portfolio Trade |location= |year= |pages= |isbn=1-59184-141-0 |oclc= |doi=}}</ref> | ||
The value for the PageRank of an [[Internet]] page varies from 0 to 1 on a logarithmic scale<ref | The value for the PageRank of an [[Internet]] page varies from 0 to 1 on a logarithmic scale<ref name="patent6285999">Page L. (2001) Method for node ranking in a linked database. [http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6285999 United States Patent Office] [http://www.google.com/patents?q=patent%3A6285999 Google Patents] {{US patent|6285999}}</ref> PageRank is based on links to an Internet page. The links are considered votes. According to Google: | ||
:PageRank "considers the importance of each page that casts a vote, as votes from some pages are considered to have greater value, thus giving the linked page greater value" | :PageRank "considers the importance of each page that casts a vote, as votes from some pages are considered to have greater value, thus giving the linked page greater value" | ||
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==History== | ==History== | ||
Brin and Page published their article, "The anatomy of a large-scale hypertextual Web search engine", in 1998.<ref>{{Cite journal | doi = 10.1016/S0169-7552(98)00110-X | issn = 0169-7552 | volume = 30 | issue = 1-7 | pages = 107-117 | last = Brin | first = Sergey | coauthors = Lawrence Page | title = The anatomy of a large-scale hypertextual Web search engine | journal = Computer Networks and ISDN Systems | accessdate = 2008-12-17 | date = 1998-04 | url = http://www.sciencedirect.com/science/article/B6TYT-3WRC342-2N/2/63e7d8fb6a64027a0c15e6ae3e402889}}</ref> Their patent for PageRank was filed in 1998 and issued in 2001.<ref | Brin and Page published their article, "The anatomy of a large-scale hypertextual Web search engine", in 1998.<ref>{{Cite journal | doi = 10.1016/S0169-7552(98)00110-X | issn = 0169-7552 | volume = 30 | issue = 1-7 | pages = 107-117 | last = Brin | first = Sergey | coauthors = Lawrence Page | title = The anatomy of a large-scale hypertextual Web search engine | journal = Computer Networks and ISDN Systems | accessdate = 2008-12-17 | date = 1998-04 | url = http://www.sciencedirect.com/science/article/B6TYT-3WRC342-2N/2/63e7d8fb6a64027a0c15e6ae3e402889}}</ref> Their patent for PageRank was filed in 1998 and issued in 2001.<ref name="patent6285999">Page L. (2001) Method for node ranking in a linked database. [http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6285999 United States Patent Office] [http://www.google.com/patents?q=patent%3A6285999 Google Patents] {{US patent|6285999}}</ref> | ||
PageRank is used by [[Google]] who owns its [[trademark]] which was filed and published in 2003.<ref>[http://www.uspto.gov United States Patent and Trademark Office] Serial number [http://tess2.uspto.gov/bin/gate.exe?state=4010:5cas1h.4.1&f=toc&a_search=&p_s_ALL=2820024 2820024]</ref> | PageRank is used by [[Google]] who owns its [[trademark]] which was filed and published in 2003.<ref>[http://www.uspto.gov United States Patent and Trademark Office] Serial number [http://tess2.uspto.gov/bin/gate.exe?state=4010:5cas1h.4.1&f=toc&a_search=&p_s_ALL=2820024 2820024]</ref> | ||
Revision as of 09:25, 30 March 2009
In information retrieval, PageRank is algorithm developed by Larry Page and Sergey Brin while at Sanford University.[1]
The value for the PageRank of an Internet page varies from 0 to 1 on a logarithmic scale[2] PageRank is based on links to an Internet page. The links are considered votes. According to Google:
- PageRank "considers the importance of each page that casts a vote, as votes from some pages are considered to have greater value, thus giving the linked page greater value"
An alternative is Kleinberg's Hyperlink-Induced Topic Search (HITS).[3][4]
History
Brin and Page published their article, "The anatomy of a large-scale hypertextual Web search engine", in 1998.[5] Their patent for PageRank was filed in 1998 and issued in 2001.[2]
PageRank is used by Google who owns its trademark which was filed and published in 2003.[6]
References
- ↑ John Battelle. The Search: How Google and Its Rivals Rewrote the Rules of Business and Transformed Our Culture. Portfolio Trade. ISBN 1-59184-141-0.
- ↑ 2.0 2.1 Page L. (2001) Method for node ranking in a linked database. United States Patent Office Google Patents U.S. Patent 6,285,999,
- ↑ Kleinberg J. Authoritative sources in a hyperlinked environment. Paper presented at Ninth Annual ACM-SIAM Symposium on Discrete Algorithms, January 25–27, 1998, San Francisco, CA. Available at http://www.cs.cornell.edu/home/kleinber/auth.ps.
- ↑ Kleinberg, Jon (1999). "Authoritative sources in a hyperlinked environment" (PDF). Journal of the ACM 46 (5): 604–632.
- ↑ Brin, Sergey; Lawrence Page (1998-04). "The anatomy of a large-scale hypertextual Web search engine". Computer Networks and ISDN Systems 30 (1-7): 107-117. DOI:10.1016/S0169-7552(98)00110-X. ISSN 0169-7552. Retrieved on 2008-12-17. Research Blogging.
- ↑ United States Patent and Trademark Office Serial number 2820024