Search (618 results, page 1 of 31)

  • × theme_ss:"Suchmaschinen"
  • × year_i:[2000 TO 2010}
  1. Breyer, K.: Kommerz statt Information (2002) 0.07 
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    Date
    9. 5.2002 21:21:22
    Source
    PC professionell. 2002, H.6, S.122-129
  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) 0.05 
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    Date
    27.12.2008 15:56:22
    Pages
    S.213-224
    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. Stock, M.; Stock, W.G.: Recherchieren im Internet (2004) 0.04 
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    Date
    27.11.2005 18:04:22
    Pages
    98 S
  5. Bharat, K.: SearchPad : explicit capture of search context to support Web search (2000) 0.03 
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    Source
    Computer networks. 33(2000) nos.1/6, S.493-501
  6. Patzwaldt, K.: Google Inside (2005) 0.03 
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    Date
    10. 6.2005 17:43:22
    Pages
    S.191-196
    Source
    ¬Die Google-Gesellschaft: Vom digitalen Wandel des Wissens. Hrsg.: K. Lehmann, M. Schetsche
  7. Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000) 0.03 
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    Date
    25. 8.2005 17:42:22
    Source
    Library and information research news. 24(2000) no.77, S.30-34
  8. MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000) 0.03 
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    Date
    22. 6.2002 19:40:22
    Source
    Online information review. 24(2000) no.1, S.59-63
  9. Ganslmayer, K.: Google: Finden, was Google nicht sieht (2006) 0.02 
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    Source
    Chip. 2006, H.7, S.202-206
  10. Price, A.: Five new Danish subject gateways under development (2000) 0.02 
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    Date
    22. 6.2002 19:41:31
    Source
    Online information review. 24(2000) no.1, S.84
  11. Eggeling, T.; Kroschel, A.: Alles finden im Web (2000) 0.02 
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    Date
    9. 7.2000 14:06:22
    Source
    PC-Welt. 2000, H.8, S.104-122
  12. Sauer, D.: Alles schneller finden (2001) 0.02 
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    Date
    11.11.2001 17:25:22
    Source
    Com!online. 2001, H.12, S.24-29
  13. Mayer, K.: Zur Soziometrik der Suchmaschinen : ein historischer Überblick der Methodik (2009) 0.02 
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    Pages
    S.64-83
    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. 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
    Source
    Bergische Landeszeitung. Nr.249 vom 26.10.2005, S.3
  15. Patzwaldt, K.: Suchmaschinenlandschaften (2005) 0.02 
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    Pages
    S.75-82
    Source
    ¬Die Google-Gesellschaft: Vom digitalen Wandel des Wissens. Hrsg.: K. Lehmann, M. Schetsche
  16. Hülsmann, M.: Profi-Suche : Suchdienste richtig nutzen (2001) 0.02 
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    Date
    11. 8.2001 14:19:22
    Footnote
    Mit einer Tabelle wichtiger Suchwerkzeuge und ihrer Eigenschaften im Anhang (S.58-59) - 2 Grafiken
    Source
    Internet Magazin. 2001, H.9, S.52-59
  17. Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001) 0.02 
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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
  18. Kranz, K.: Suchmaschinen-Macht (2004) 0.02 
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    Source
    Chip. 2004, H.1, S.34-35
  19. Gardner, T.; Iannella, R.: Architecture and software solutions (2000) 0.02 
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    Date
    22. 6.2002 19:38:24
    Source
    Online information review. 24(2000) no.1, S.35-39
  20. Peereboom, M.: DutchESS : Dutch Electronic Subject Service - a Dutch national collaborative effort (2000) 0.02 
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    Date
    22. 6.2002 19:39:23
    Source
    Online information review. 24(2000) no.1, S.46-48

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