Search (128 results, page 1 of 7)

  • × theme_ss:"Suchmaschinen"
  • × year_i:[2000 TO 2010}
  1. Breyer, K.: Kommerz statt Information (2002) 0.06 
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    Date
    9. 5.2002 21:21:22
  2. Boldi, P.; Santini, M.; Vigna, S.: PageRank as a function of the damping factor (2005) 0.05 
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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
  3. Williamson, N.J.: Knowledge structures and the Internet : progress and prospects (2006) 0.04 
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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
  4. Patzwaldt, K.: Google Inside (2005) 0.03 
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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
  5. Stock, M.; Stock, W.G.: Recherchieren im Internet (2004) 0.02 
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    Date
    27.11.2005 18:04:22
  6. Bharat, K.: SearchPad : explicit capture of search context to support Web search (2000) 0.02 
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  7. MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000) 0.02 
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    Date
    22. 6.2002 19:40:22
  8. Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000) 0.02 
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    Date
    25. 8.2005 17:42:22
  9. Bawden, D.: Google and the universe of knowledge (2008) 0.02 
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    Date
    7. 6.2008 16:22:20
  10. Müller-Wolf, K.: (Alb-)Traum der virtuellen Bücherwelt : Internet-Unternehmen Google möchte weltumspannende digitale Bibliothek schaffen (2005) 0.02 
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    Date
    3. 5.1997 8:44:22
  11. Ganslmayer, K.: Google: Finden, was Google nicht sieht (2006) 0.02 
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  12. Lischka, K.; Kremp, M.: Was der Google-Gegner weiß - und was nicht (2009) 0.02 
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  13. Mayer, K.: Zur Soziometrik der Suchmaschinen : ein historischer Überblick der Methodik (2009) 0.02 
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    Source
    Deep Search: Politik des Suchens jenseits von Google; Deep Search-Konferenz, Wien, 2008.11.08; eine Veröffentlichung des World-Information Institute. Hrsg.: K. Becker u. F. Stalder
  14. Price, A.: Five new Danish subject gateways under development (2000) 0.02 
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    Date
    22. 6.2002 19:41:31
  15. Eggeling, T.; Kroschel, A.: Alles finden im Web (2000) 0.02 
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    Date
    9. 7.2000 14:06:22
  16. Poulakos, I.: ¬"Die Leute suchen immer dasselbe" (2001) 0.02 
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    Date
    18. 1.1997 12:15:22
  17. Sauer, D.: Alles schneller finden (2001) 0.02 
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    Date
    11.11.2001 17:25:22
  18. Patzwaldt, K.: Suchmaschinenlandschaften (2005) 0.01 
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    Source
    ¬Die Google-Gesellschaft: Vom digitalen Wandel des Wissens. Hrsg.: K. Lehmann, M. Schetsche
  19. Kranz, K.: Suchmaschinen-Macht (2004) 0.01 
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  20. Gardner, T.; Iannella, R.: Architecture and software solutions (2000) 0.01 
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    Date
    22. 6.2002 19:38:24

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