-
Sauer, D.: Alles schneller finden (2001)
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- Date
- 1. 8.1997 14:03:29
11.11.2001 17:25:22
- Source
- Com!online. 2001, H.12, S.24-29
-
Ganslmayer, K.: Google: Finden, was Google nicht sieht (2006)
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- Date
- 24. 6.2006 9:29:44
-
Breyer, K.: Kommerz statt Information (2002)
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- Date
- 9. 5.2002 21:21:22
-
Lewandowski, D.: Alles nur noch Google? : Entwicklungen im Bereich der WWW-Suchmaschinen (2002)
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- Date
- 29. 9.2002 18:49:22
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Boldi, P.; Santini, M.; Vigna, S.: PageRank as a function of the damping factor (2005)
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- Abstract
- PageRank is defined as the stationary state of a Markov chain. The chain is obtained by perturbing the transition matrix induced by a web graph with a damping factor alpha that spreads uniformly part of the rank. The choice of alpha is eminently empirical, and in most cases the original suggestion alpha=0.85 by Brin and Page is still used. Recently, however, the behaviour of PageRank with respect to changes in alpha was discovered to be useful in link-spam detection. Moreover, an analytical justification of the value chosen for alpha is still missing. In this paper, we give the first mathematical analysis of PageRank when alpha changes. In particular, we show that, contrarily to popular belief, for real-world graphs values of alpha close to 1 do not give a more meaningful ranking. Then, we give closed-form formulae for PageRank derivatives of any order, and an extension of the Power Method that approximates them with convergence O(t**k*alpha**t) for the k-th derivative. Finally, we show a tight connection between iterated computation and analytical behaviour by proving that the k-th iteration of the Power Method gives exactly the PageRank value obtained using a Maclaurin polynomial of degree k. The latter result paves the way towards the application of analytical methods to the study of PageRank.
- Date
- 16. 1.2016 10:22:28
-
Williamson, N.J.: Knowledge structures and the Internet : progress and prospects (2006)
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- Date
- 27.12.2008 15:56:22
- Source
- Knowledge organization for a global learning society: Proceedings of the 9th International ISKO Conference, 4-7 July 2006, Vienna, Austria. Hrsg.: G. Budin, C. Swertz u. K. Mitgutsch
-
Park, E.-K.; Ra, D.-Y.; Jang, M.-G.: Techniques for improving web retrieval effectiveness (2005)
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- Date
- 26.12.2007 20:28:29
-
Patzwaldt, K.: Google Inside (2005)
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- Date
- 10. 6.2005 17:43:22
- Source
- ¬Die Google-Gesellschaft: Vom digitalen Wandel des Wissens. Hrsg.: K. Lehmann, M. Schetsche
-
Auletta, K: Googled : the end of the world as we know it (2009)
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- Date
- 11.12.2009 18:29:36
-
Perez, E.: dtSearch: the little search engine that could (2004)
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- Source
- Online. 29(2005) no.1, S.28-
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Kiefer, A.: ¬Die Googlewhacker (2002)
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- Date
- 20. 3.2002 10:28:22
- Source
- Frankfurter Rundschau. Nr.66 vom 19.3.2002, S.29
-
Stock, M.; Stock, W.G.: Recherchieren im Internet (2004)
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- Date
- 27.11.2005 18:04:22
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Bharat, K.: SearchPad : explicit capture of search context to support Web search (2000)
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MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000)
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- Date
- 22. 6.2002 19:40:22
-
Plath, J.: Allianz gegen Google : Streit um die Verwertungsrechte von Büchern (2008)
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- Date
- 5. 1.1997 9:39:22
6. 2.2009 10:29:08
-
Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000)
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- Date
- 25. 8.2005 17:42:22
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Bawden, D.: Google and the universe of knowledge (2008)
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- 7. 6.2008 16:22:20
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Müller-Wolf, K.: (Alb-)Traum der virtuellen Bücherwelt : Internet-Unternehmen Google möchte weltumspannende digitale Bibliothek schaffen (2005)
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