Search (23 results, page 1 of 2)

  • × theme_ss:"Suchmaschinen"
  • × type_ss:"el"
  1. Spink, A.; Gunar, O.: E-Commerce Web queries : Excite and AskJeeves study (2001) 0.04 
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  2. 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
  3. Kopp, O.: Google Hummingbird-Algorithmus-Update : Infos & Hintergründe (2013) 0.02 
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  4. Baeza-Yates, R.; Boldi, P.; Castillo, C.: Generalizing PageRank : damping functions for linkbased ranking algorithms (2006) 0.02 
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    Date
    16. 1.2016 10:22:28
  5. Page, L.; Brin, S.; Motwani, R.; Winograd, T.: ¬The PageRank citation ranking : Bringing order to the Web (1999) 0.01 
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  6. Gillitzer, B.: Yewno (2017) 0.01 
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    Date
    22. 2.2017 10:16:49
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  7. Tyner, R.: Sink or swim : Internet search tools & techniques (1996) 0.01 
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  8. Palm, G.: ¬Der Zeitgeist in der Suchmaschine : Unser alltäglicher "Google-Hupf" und seine Spuren (2002) 0.01 
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    Abstract
    Zeitmaschinen gibt es schon länger, spätestens seit H. G. Wells, aber eine Zeitgeistmaschine existiert erst seit 1998: Google. Trend-Gurus und ihre Trend-Büros gehören demnächst der Vergangenheit an. Eine weitere Ironie des Netzes, das heute bereits verabschiedet, was doch für morgen bestimmt war. Google macht die ohnehin so anfechtbare Zunft der Seher tendenziell arbeitslos, weil die Suchmaschine der Suchmaschinen sich nicht auf Nostradamus oder Horoskop, Kassandra oder Kaffeesatz, sondern auf Suchanfragen verlässt. Was die Welt umtreibt, was mega-in oder mega-out ist, bildet sich in Googles Zeitgeistfeature ab. Das komplexe Wunder von Google ist der Vokal "o", der bekanntlich erstaunlich dehnbar ist, wenn die Welt auf der Suche nach sich selbst ist. Google führt sich auf ein Wortspiel mit dem mathematischen Begriff "googol" zurück, eine 1 mit 100 Nullen. Rechnet man Googles Partnerschaften mit Yahoo und anderen dazu, wird pro Tag ca. 150 Millionen mal gegoogelt - Tendenz selbstverständlich steigend. Nach Google-Mitgründer Larry Page besteht der Anspruch der perfekten Suchmaschine darin, dass sie genau versteht, was der Suchende will und ihn exakt bedient. Doch das ist nur die längst nicht erreichte Sonnenseite der blitzschnell generierten Suchantworten der digitalen Wissensgesellschaft. Die vielen Fragen der Wissbegierigen sind selbst Antworten - Antworten auf die Frage nach den Interessen, Wünschen und Begierden der Netzgesellschaft.
  9. Hillenbrand, T.: Googles Zehn Gebote (2005) 0.01 
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    Content
    "Und Mo der User irrte einsam durch die kalte Betonwüste und er wusste nicht wo Norden noch Süden war. "Weh mir", rief er, "ausgezogen war ich, den Tempel des Heiligen Saturn zu finden, auf dass mir seine Hohepriester einige jener kleinen Silberscheiben verkauften, zu wohlfeilen Preisen. Doch nun bin ich ganz verloren und weiß nicht, wohin ich meine Schritte lenken soll." Es begab sich aber, dass Mo an einer Taverne vorbeikam. "Preiset den Herrn", rief er aus, "diese bescheidene Tränke vermag mir nicht nur ein wohlschmeckend Heißgebräu mit Vanillearoma zu bereiten. Vermittels ihrer vermag ich auch die Götter des Internet um Rat anzuflehen." Und so öffnete er sein Ränzel, entnahm sein gesegnetes iBuch von Antiochia und klinkte sich in den Hotspot des Kaffeehökers ein. Alsdann betete Mo zu Google. Und er rief: "O allwissender Google. Ich suche den Tempel des edlen Saturn oder des erhabenen Conrad, auf dass ich einige Silberlinge zur Archivierung meiner Schriften erwerben könnte." Und so tippte Mo die Wörter "DVD Berlin" in sein magisches Büchlein. Und als er die Return-Taste betätigte, da vernahm er in der Ferne ein Donnergrollen und der Himmel verfinsterte sich. Und ein Blitz zuckte vom Himmel und fuhr in Mos treues iBuch und der Akku fing Feuer. Und es war viel Wehklagen und Geschrei in der Taverne. Diese Zeichen des Herrn trieben die Furcht in Mos Herz und er fiel vor dem brennenden Zauberbüchlein auf die Knie. Und plötzlich wurde er in den lodernden Flammen des mächtigen Google Antlitz' gewahr. Und jener sprach: "Mo, du Idiot! Du willst der Prophet der Suchmaschinen sein, aber du weißt ja nicht mal, wie man eine vernünftige Abfrage formuliert!" Mo warf sich zu Boden: "Allmächtiger, ich - ...". "Klappe, Mo!", zischte das iBuch. "Täglich wollen die Adepten Antworten von mir, doch kaum einer ist in der Lage, seine Fragen richtig zu stellen. Das nervt höllisch. Empfange nunmehr meine zehn Gebote der Internet-Suche. Und künde den anderen Usern davon immerdar." Und er sprach: Und Mo hob die Hände zum Himmel und rief: "Hosianna! Lob und Ehre sei Dir, O mächtiger und preisenswerter Gott der Suche. Umgehend will ich Deine Gebote meißeln in feinsten Marmor, auf dass ein jeder sie schaue!" Und ein weiteres grollendes Seufzen erschütterte die Taverne. "Marmor? Du hast es wahrlich nicht mit Löffeln gefressen, Mo. Poste es irgendwo im Netz, das geht viel schneller." Und so geschah es."
  10. Broder, A.; Kumar, R.; Maghoul, F.; Raghavan, P.; Rajagopalan, S.; Stata, R.; Tomkins, A.; Wiener, J.: Graph structure in the Web (2000) 0.01 
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  11. Overton, R.: Search engines get faster and faster, but not always better (1996) 0.01 
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  12. Independent auditors' report and consolidated financial statements (2007) 0.01 
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    Type
    r
  13. Lewandowski, D.: Wie "Next Generation Search Systems" die Suche auf eine neue Ebene heben und die Informationswelt verändern (2017) 0.01 
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    Footnote
    Bezug zum Buch: White, R.: Interactions with search systems. New York ; Cambridge University Press ; 2016.
  14. Dunning, A.: Do we still need search engines? (1999) 0.01 
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    Source
    Ariadne. 1999, no.22
  15. Birmingham, J.: Internet search engines (1996) 0.01 
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    Date
    10.11.1996 16:36:22
  16. Entlich, R.: FAQ: Image Search Engines (2001) 0.01 
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  17. Khare, R.; Cutting, D.; Sitaker, K.; Rifkin, A.: Nutch: a flexible and scalable open-source Web search engine (2004) 0.01 
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  18. Ding, L.; Finin, T.; Joshi, A.; Peng, Y.; Cost, R.S.; Sachs, J.; Pan, R.; Reddivari, P.; Doshi, V.: Swoogle : a Semantic Web search and metadata engine (2004) 0.01 
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  19. Sietmann, R.: Suchmaschine für das akademische Internet (2004) 0.00 
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  20. Bensman, S.J.: Eugene Garfield, Francis Narin, and PageRank : the theoretical bases of the Google search engine (2013) 0.00 
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    Date
    17.12.2013 11:02:22

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