Search (731 results, page 1 of 37)

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Content

Vgl.: http%3A%2F%2Fdelab.csd.auth.gr%2F~dimitris%2Fcourses%2Fir_spring06%2Fpage_rank_computing%2Fp527-li.pdf. Vgl. auch: http://www2002.org/CDROM/refereed/643/.

Language

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Source

Database. 19(1996) no.3, S.86-91

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Date

17. 4.2012 14:25:22

Language

e

Pages

S.78-91

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Date

13. 9.2014 14:45:22

Pages

91 S

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e

Source

Online. 21(1997) no.3, S.89-91

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Abstract

Describes 4 search engines for the Internet: infoMarket Search; Yahoo and OpenText; Lycos Spider; and WebCompass. InfoMarket Search retrieves data from Web pages and information providers such as Disclosure, Information Access Company and Cambridge Scientific Abstracts. It is able to search millions of Web pages in under five seconds. Automated 'crawlers' index the complete text of Web documents. Yahoo enables users to search for specific words and phrases and conduct multilevel Boolean and weighted searches. Lycos spider offers support for HotJava and indexes 91% of the Web. WebCompass polls multiple search engines such as Lycos and InfoSeek for relevant Web pages. A personalized index of topics may be built and retrieved data stored in a format based on Microsoft Access 2.0

Language

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Date

17. 7.1996 9:33:22
14. 9.2008 17:11:22

Footnote

Vgl.: http://www.fr-online.de/in_und_ausland/kultur_und_medien/medien/?em_cnt=1591671&em_loc=91.

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Source

Internet Professionell. 1998, H.12, S.91-93

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Source

CD-Info. 2003, H.6, S.91

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Source

PC-Welt. 2005, H.6, S.91-99

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Abstract

Approximately 91 million American adults use the Internet on a typical day The number-one Internet activity is reading and writing e-mail. Search engine use is next in line and continues to increase in popularity. In fact, survey findings indicate that nearly 60 million American adults use search engines on a given day. Even though there are many Internet search engines, Google, Yahoo!, and MSN receive over 81% of all search requests. Despite claims that the quality of search provided by Yahoo! and MSN now equals that of Google, Google continues to thrive as the search engine of choice, receiving over 46% of all search requests, nearly double the volume of Yahoo! and over four times that of MSN. I use Google's search engine on a daily basis and rarely request information from other search engines. One day, I decided to visit the homepages of Google. Yahoo!, and MSN to compare the quality of search results. Coffee was on my mind that day, so I entered the simple query "coffee" in the search box at each homepage. Table 1 shows the top ten (unsponsored) results returned by each search engine. Although ordered differently, two webpages, www.peets.com and www.coffeegeek.com, appear in all three top ten lists. In addition, each pairing of top ten lists has two additional results in common. Depending on the information I hoped to obtain about coffee by using the search engines, I could argue that any one of the three returned better results: however, I was not looking for a particular webpage, so all three listings of search results seemed of equal quality. Thus, I plan to continue using Google. My decision is indicative of the problem Yahoo!, MSN, and other search engine companies face in the quest to obtain a larger percentage of Internet search volume. Search engine users are loyal to one or a few search engines and are generally happy with search results. Thus, as long as Google continues to provide results deemed high in quality, Google likely will remain the top search engine. But what set Google apart from its competitors in the first place? The answer is PageRank. In this article I explain this simple mathematical algorithm that revolutionized Web search.

Language

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Content

Die Suche mit Google, früher meist auf Anhieb erfolgreich, bereitet in letzter Zeit zunehmend Frust. Sucht man zum Beispiel mit den Begriffen "kfz kaufen lüneburg" nach Autohändlern in der Heidestadt, erhält man als ersten Treffer eine Site, die laut Inhaltsangabe in der Trefferliste die Begriffe "Eu-Auto Neuwagenmarkt kaufen Reimport-Auto Fahrzeug" enthält. Als Adresse gibt die Suchmaschine eu-reimport-auto.department1.de/kaufen/ an. Doch dieser Treffer passt nur scheinbar gut zu der Anfrage. Klickt man nämlich auf den Link, landet man nach mehreren Weiterleitungen auf verschiedenen anderen Sites, meistens auf einer allgemeinen Startseite von eBay, http://pages.ebay. de, auf der man dann vergeblich nach "lüneburg" und "kfz" Ausschau hält. Sucht man mit der Abfrage "diascanner test" nach Diascanner-Vergleichen, dann führt der erste Treffer zur Ergebnisseite einer anderen Suchmaschine namens Biveroo mit nutzlosen Verweisen, obwohl der Link angeblich auf die Site www.sisira.de führen soll. Die zweite Site in der Trefferliste listet unter der Domain diascanner.org eBay-Auktionen und Links des Pay-forPerformance-Anbieters Espotting - also gekaufte Links, Werbung. Testberichte? Auch hier Fehlanzeige. Insgesamt finden sich unter den ersten zehn Verweisen nur drei relevante. Surfer erhalten bei Google-Recherchen im Umfeld von Produkten und Dienstleistungen immer mehr unbrauchbare oder in anderer Weise ungewöhnliche Treffer: Webseiten, die mit der Abfrage kaum etwas zu tun haben, zum Teil nicht einmal den Suchbegriff enthalten, wirre Linksammlungen oder gar Ergebnisseiten anderer Suchmaschinen. Mitunter landet man nach dem Klick auch bei einer anderen Adresse, als Googie in seiner Ergebnisliste angibt. Immer seltener finden sich neutrale Informationen; statt dessen landet der Surfer immer häufiger in irgendwelchen Online-Shops oder auf E-Commerce-Portalen. Verseuchte Ergebnisse Die Verseuchung der GoogleSuchergebnisse durch aufdringliche Geschäftemacherei ist findigen Tricksern zu verdanken. Sie haben Wege gefunden, bei immer mehr Suchanfragen ihre Links unter den ersten Treffern zu platzieren. So fällt nun auch Google einer Entwicklung anheim, die viele andere Suchdienste bereits vor Jahren heimgesucht und weitgehend unbrauchbar gemacht hat. Dabei galt doch der geniale Google-Algorithmus zur Bestimmung der Trefferrelevanz ("Ranking") lange Zeit als immun gegen Manipulationsversuche. Der Suchmaschinenprimus zieht nicht nur die in den HTMLSeiten enthaltenen Schlüsselwörter heran, wie es die Suchdienste in der Vor-Google-Ära taten. Stattdessen bestimmen bei Google vor allem Verweise fremder Seiten und damit die Wertschätzung durch andere Webmaster darüber, welche Position eine Website in der Trefferliste erhält. Aber nicht nur die bloße Anzahl der Links, sondern auch der Rang der verweisenden Website fließt in die Bewertung ein. Daraus errechnet Google den so genannten Page Rank, benannt übrigens nach dem Erfinder Larry Page [11. Jedermann kann sich mit der erweiterten Version der Google-Toolbar für den Internet Explorer den Page Rank beliebiger Seiten anzeigen lassen.

Source

c't. 2003, H.20, S.88-91

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Bulletin d'informations de l'Association des Bibliothecaires Francais. 1997, no.174, S.91-96

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Date

22. 5.2005 10:06:58

Source

PC-Welt Sonderheft. 2005, H.5, S.88-91

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Date

7. 2.1996 22:38:41

Footnote

e-mail: grossjoh@ls6.informatik.uni-dortmund.de

Pages

22 S

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Language

e

Source

Computers in libraries. 19(1999) no.5, S.22-28

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Date

25. 8.2005 17:42:22

Language

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Language

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Source

Ariadne. 1999, no.22

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Date

7. 6.2008 16:22:20

Language

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Date

22. 6.2002 19:40:22

Language

e