Suchmaschinen - PowerPoint PPT Presentation

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Suchmaschinen

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Size 56,463,993 43,343,168 43,166,185 43,797,944 16,777,756 203, ... Zensur, z.B. Scientology, Nazi-Propaganda. China. 14.05.2003. jochen.koubek_at_hu-berlin.de ... – PowerPoint PPT presentation

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Title: Suchmaschinen


1
Suchmaschinen
  • Bots, Spiders, Engines
  • Am Beispiel

2
Suchmaschinen-Klassifikation
  • Themenkataloge
  • Yahoo, Web.de
  • Indizes
  • Lycos, AltaVista, Excite, Google
  • Besprechungsdienste
  • Webcrawler, Webtip
  • Meta-Suchsysteme
  • MetaCrawler, Apollo7
  • Spezialisierte Maschinen
  • IMDB, OPAC

3
Suchtechnologien
  • Datenbestand aufbauen
  • Sammeln (Harvesting)
  • Indizieren
  • Anfrage bearbeiten
  • Ergebnisliste
  • Gewichten (Ranking)
  • Sortieren
  • Ausgabe

4
Rankingmethodenhttp//www.suchfibel.de/5technik/r
anking.htm
  • Qualität der Dokumente
  • Schlüsselworte,
  • Vorkommen
  • MetaTags
  • Listing gegen Geld (Sponsored Links)
  • Werbebanner
  • ADWords
  • Verdeckte Positionierung
  • Nutzerverhalten
  • Sammlungen (Clever)
  • Klickhäufigkeit (Direct Hit)
  • Verwandte Dokumente (Alexa)
  • Verlinkungshäufigkeit

5
Graphenstruktur des Netzeshttp//www.almaden.ibm.
com/cs/k53/www9.final/
Region SCC IN OUT TENDRILS DISC. Total Size 56,463
,993 43,343,168 43,166,185 43,797,944 16,777,756 2
03,549,046
6
Google Timelinehttp//www.google.com/corporate/
timeline.html
  • 1995 S. Brin und L. Page beginnen ihr
    Forschungsprojekt.
  • 1997 BackRub.
  • 1998 täglich 10.000 Anfragen.
  • 1999 8 Angestellte, täglich 3 Mio. Anfragen.
  • 2000 Nicht-Englische Oberfläche, Täglich 18 Mio.
    Anfragen.
  • Jan. 2001 tgl. 100 Mio Anfragen. Phonebook.
  • Juli 2001 Bildsucher.
  • Okt. 2001 Dateitypen.
  • Dez. 2001 3 Mrd. Webseiten indiziert. Google
    News, Catalog, Zeitgeist.
  • 2002 Hardware, Compute, Toolbar, Labs, Program
    Contest.

7
Google PageRank
  • United States Patent- 6,285,999

8
Google - Technikhttp//www.google.com/appliance
  • RAIS Redundant Arrays of Inexpensive Servers
  • 10.000 Server auf Linux-Basis jeder
  • 60 Anfragen/Minute
  • Einschränkung auf 150.000/300.000 Dokumente

9
Google Dance
  • http//www.google-dance.com/

10
Google Kundenhttp//www.google.com/press/custom
ers.html
  • Yahoo
  • EarthLink
  • Palm
  • Nextel
  • Netscape
  • Cisco
  • Virgin
  • RedHat

11
Google im Markthttp//www.searchenginewatch.com/r
eports/article.php/2156451http//news.com.com/200
9-1023-963618.html
  • Suchstunden

12
Google - Funktionenhttp//www.google.com/applianc
e/features.html
  • Zusammenfassung
  • Ergebnisgruppierung
  • HTML-Sicht
  • Autokorrektur
  • Cache
  • Trefferhervorhebung
  • Sortieren nach Datum

13
Google Suche
  • Inklusion
  • - Exklusion
  • ganzer Satz
  • OR
  • Sprache
  • Datum

14
Spezialsuchehttp//www.google.com/help/features.h
tml http//www.google.com/help/operators.html
  • Cached Links
  • View a snapshot of each page as it looked when
    we indexed it.
  • Dictionary Definitions
  • View a dictionary definition for any or all
    parts of your query.
  • File Types
  • Search for non-HTML file formats including PDF
    documents and others.
  • I'm Feeling Lucky
  • Bypass our results and go to the first web page
    returned for your query.
  • News Headlines
  • Enhances your search results with the latest
    related news stories.
  • PhoneBook
  • Look up U.S. street address and phone number
    information.
  • Similar Pages
  • Display pages that are related to a particular
    result.
  • Site Search
  • Restrict your search to a specific site.
  • Spell Checker
  • Offers alternative spelling for queries.
  • Stock Quotes

15
Google Zeitgeist
  • http//www.google.com/press/zeitgeist.html

16
Google Optionenhttp//www.google.com/options/in
dex.html
  • Web Search
  • Web Directory
  • Groups
  • Images
  • News
  • Answers
  • Labs
  • Special Searches (.edu, Mac, Linux, BSD)
  • Wireless
  • Froogle
  • Catalogs
  • Safe Search

17
Google Dateiformatehttp//www.google.com/help/f
aq_filetypes.html
  • Adobe Portable Document Format (pdf)
  • Adobe PostScript (ps)
  • Lotus 1-2-3 (wk1, wk2, wk3, wk4, wk5, wki, wks,
    wku)
  • Lotus WordPro (lwp)
  • MacWrite (mw)
  • Microsoft Excel (xls)
  • Microsoft PowerPoint (ppt)
  • Microsoft Word (doc)
  • Microsoft Works (wks, wps, wdb)
  • Microsoft Write (wri)
  • Rich Text Format (rtf)
  • Text (ans, txt)

18
Google Werkzeugehttp//www.google.com/options/i
ndex.html
  • Google in Your Language
  • Browser Buttons
  • Toolbar
  • Übersetzung von Webseiten
  • Web APIs, Google Hacks
  • Google Compute

19
Google Sekundärseiten
  • Google - Whack
  • Google - Dance
  • Google - Alert
  • Google - Watch
  • Google - Hacks
  • Google - Forum
  • Google - Weblog
  • ChillingEffects

20
Google Kritikhttp//www.google-watch.orghttp/
/google.blogspace.com/
  • 2003-02-21 (BBC)  "The much-praised reputation
    mechanism that is supposed to ensure that
    bloggers remain true, honest and
    factually-correct is, in fact, just the rule of
    the mob, where those who shout loudest and get
    the most links are taken more seriously. It is
    the online equivalent of saying that The Sun
    newspaper always tells the truth because four
    million people read it, and The Guardian is
    intrinsically less trustworthy as it only sells
    half a million."
  • Unsterbliche Cookies
  • Datenspeicherung
  • Cache-Kopie
  • Kooperation mit NSA
  • Linkfarms
  • Search King
  • Zensur, z.B. Scientology, Nazi-Propaganda
  • China

21
googlende
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