Search (325 results, page 1 of 17)

  • × theme_ss:"Suchmaschinen"
  • × year_i:[2000 TO 2010}
  1. Breyer, K.: Kommerz statt Information (2002) 0.08 
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    Date
    9. 5.2002 21:21:22
    Source
    PC professionell. 2002, H.6, S.122-129
  2. Ganslmayer, K.: Google: Finden, was Google nicht sieht (2006) 0.03 
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    Source
    Chip. 2006, H.7, S.202-206
  3. Boldi, P.; Santini, M.; Vigna, S.: PageRank as a function of the damping factor (2005) 0.03 
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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
  4. Eggeling, T.; Kroschel, A.: Alles finden im Web (2000) 0.03 
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    Date
    9. 7.2000 14:06:22
    Source
    PC-Welt. 2000, H.8, S.104-122
  5. Sauer, D.: Alles schneller finden (2001) 0.03 
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    Date
    11.11.2001 17:25:22
    Source
    Com!online. 2001, H.12, S.24-29
  6. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.03 
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    Abstract
    Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
    Footnote
    Vgl. auch den Bericht in: nfd 53(2002) H.2, S.71
    Source
    nfd Information - Wissenschaft und Praxis. 52(2001) H.7, S.381-392
  7. Williamson, N.J.: Knowledge structures and the Internet : progress and prospects (2006) 0.03 
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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
  8. Kranz, K.: Suchmaschinen-Macht (2004) 0.03 
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    Source
    Chip. 2004, H.1, S.34-35
  9. Hülsmann, M.: Profi-Suche : Suchdienste richtig nutzen (2001) 0.02 
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    Date
    11. 8.2001 14:19:22
    Source
    Internet Magazin. 2001, H.9, S.52-59
  10. Schüler, P.: Wertes Wissen : Knowledge Management vermeidet Datenfriedhöfe (2001) 0.02 
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    Date
    8.11.2001 19:58:22
    Source
    c't. 2001, H.20, S.136-138
  11. Lewandowski, D.: Alles nur noch Google? : Entwicklungen im Bereich der WWW-Suchmaschinen (2002) 0.02 
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    Date
    29. 9.2002 18:49:22
    Source
    BuB. 54(2002) H.9, S.558-561
  12. Lewandowski, D.: Abfragesprachen und erweiterte Funktionen von WWW-Suchmaschinen (2004) 0.02 
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    Date
    28.11.2004 13:11:22
    Source
    Information - Wissenschaft und Praxis. 55(2004) H.2, S.97-102
  13. Ganslmayer, K.: Neue Suchmaschine will Google angreifen (2007) 0.02 
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    Source
    Chip. 2007, H.3, S.27
  14. Internet: The editor's choice (2004) 0.02 
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  15. Kanaeva, Z.: Ranking: Google und CiteSeer (2005) 0.02 
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  16. Hastik, C.; Schuster, A.; Knauerhase, A.: Wissenschaftliche Suchmaschinen : Usability Evaluation und Betrachtung des Suchverhaltens potentieller Nutzer (2009) 0.02 
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  17. Patzwaldt, K.: Google Inside (2005) 0.02 
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  18. Hamdorf, K.: Wer katalogosiert das Web? : Dokumentarische Arbeit als Big Business und Freiwilligen-Projekt (2001) 0.02 
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  19. Hamdorf, K.: Jenseits von Google : Erschließung und Recherche von Internet-Angeboten durch Webkataloge (2004) 0.02 
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  20. Mayr, P.; Walter, A.-K.: Abdeckung und Aktualität des Suchdienstes Google Scholar (2006) 0.02 
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