Suchmaschinen Bots, Spiders, Engines Am Beispiel

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

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

Rankingmethoden 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 RegionSCCINOUTTENDRILSDISC.Total Size56,463,99343,343,16843,166,18543,797,94416,777,756203,549,046

Google – Timeline S. Brin und L. Page beginnen ihr Forschungsprojekt BackRub täglich Anfragen Angestellte, täglich 3 Mio. Anfragen Nicht-Englische Oberfläche, Täglich 18 Mio. Anfragen. Jan tgl. 100 Mio Anfragen. Phonebook. Juli 2001 Bildsucher. Okt Dateitypen. Dez Mrd. Webseiten indiziert. Google News, Catalog, Zeitgeist Hardware, Compute, Toolbar, Labs, Program Contest.

Google – PageRank United States Patent- 6,285,999

Google - Technik RAIS – Redundant Arrays of Inexpensive Servers Server auf Linux-Basis jeder –60 Anfragen/Minute –Einschränkung auf / Dokumente

Google – Dance

Google – Kunden Yahoo EarthLink Palm Nextel Netscape Cisco Virgin RedHat

Google im Markt Suchstunden

Google - Funktionen Zusammenfassung Ergebnisgruppierung HTML-Sicht Autokorrektur Cache Trefferhervorhebung Sortieren nach Datum

Google – Suche + Inklusion - Exklusion ganzer Satz OR Sprache Datum

Spezialsuche 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 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

Google – Optionen Web Search Web Directory Groups Images News Answers Labs Special Searches (.edu, Mac, Linux, BSD) Wireless Froogle Catalogs Safe Search

Google – Dateiformate Adobe Portable Document Format (pdf) Adobe PostScript (ps) Lotus (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 Google in Your Language Browser Buttons Toolbar Übersetzung von Webseiten Web APIs, Google Hacks Google Compute

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

Google – Kritik (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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