Suchmaschinen - PowerPoint PPT Presentation

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Suchmaschinen. Bots, Spiders, Engines Am Beispiel. Suchmaschinen-Klassifikation. Themenkataloge Yahoo, Indizes Lycos, AltaVista, Excite, Google Besprechungsdienste Webcrawler, Webtip Meta-Suchsysteme MetaCrawler, Apollo7 Spezialisierte Maschinen IMDB, OPAC. Suchtechnologien.

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Bots, Spiders, Engines

Am Beispiel

Suchmaschinen klassifikation l.jpg


  • Themenkataloge

    • Yahoo,

  • Indizes

    • Lycos, AltaVista, Excite, Google

  • Besprechungsdienste

    • Webcrawler, Webtip

  • Meta-Suchsysteme

    • MetaCrawler, Apollo7

  • Spezialisierte Maschinen

    • IMDB, OPAC

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Datenbestand aufbauen

  • Sammeln (Harvesting)

  • Indizieren

    Anfrage bearbeiten

  • Ergebnisliste

  • Gewichten (Ranking)

  • Sortieren

  • Ausgabe

Rankingmethoden http www suchfibel de 5technik ranking htm l.jpg


  • 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

Graphenstruktur des netzes http www almaden ibm com cs k53 www9 final l.jpg

Graphenstruktur des Netzes



Google timeline http www google com corporate timeline html l.jpg

Google – Timeline

  • 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.

Google pagerank l.jpg

Google – PageRank

United States Patent- 6,285,999

Google technik http www google com appliance l.jpg

Google - Technik

  • RAIS – Redundant Arrays of Inexpensive Servers

  • 10.000 Server auf Linux-Basis jeder

    • 60 Anfragen/Minute

    • Einschränkung auf 150.000/300.000 Dokumente

Google dance l.jpg

Google – Dance

Google kunden http www google com press customers html l.jpg

Google – Kunden

  • Yahoo

  • EarthLink

  • Palm

  • Nextel

  • Netscape

  • Cisco

  • Virgin

  • RedHat

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Google im Markt


Google funktionen http www google com appliance features html l.jpg

Google - Funktionen

  • Zusammenfassung

  • Ergebnisgruppierung

  • HTML-Sicht

  • Autokorrektur

  • Cache

  • Trefferhervorhebung

  • Sortieren nach Datum

Google suche l.jpg

Google – Suche

  • + Inklusion

  • - Exklusion

  • ”ganzer Satz“

  • OR

  • Sprache

  • Datum

Spezialsuche http www google com help features html http www google com help operators html l.jpg


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.


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

Use Google to get stock and mutual fund information.

Street Maps

Use Google to find U.S. street maps.

Web Page Translation*

Provides English speakers access to a variety of non-English web pages.

Who links to you?*

Find all the pages that point to a specific URL.

Google zeitgeist l.jpg

Google – Zeitgeist

Google optionen http www google com options index html l.jpg

Google – Optionen

  • Web Search

  • Web Directory

  • Groups

  • Images

  • News

  • Answers

  • Labs

  • Special Searches (.edu, Mac, Linux, BSD)

  • Wireless

  • Froogle

  • Catalogs

  • Safe Search

Google dateiformate http www google com help faq filetypes html l.jpg

Google – Dateiformate

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)

Google werkzeuge http www google com options index html l.jpg

Google – Werkzeuge

  • Google in Your Language

  • Browser Buttons

  • Toolbar

  • Übersetzung von Webseiten

  • Web APIs, Google Hacks

  • Google Compute

Google sekund rseiten l.jpg

Google Sekundärseiten

Google - Whack

Google - Dance

Google - Alert

Google - Watch

Google - Hacks

Google - Forum

Google - Weblog


Google kritik http www google watch org http google blogspace com l.jpg

Google – Kritik

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

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  • Login