-
Li, L.; Shang, Y.; Zhang, W.: Improvement of HITS-based algorithms on Web documents
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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/.
- Source
- WWW '02: Proceedings of the 11th International Conference on World Wide Web, May 7-11, 2002, Honolulu, Hawaii, USA
-
Rudich, J.: Internet search engines on CD-ROM (1996)
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- Abstract
- Internet search engines on CD-ROM bridge the gap between printed directories and online search engines. Reviews: CyberSearch, Internet Connection '96, Mega Web directory; New Riders Official World Wide Web Yellow pages, World Wide Web Directory, and WebCompass
- Object
- Mega Web directory
New Riders Official World Wide Web Yellow pages
World Wide Web Directory
-
Lawrence, S.; Giles, C.L.: Searching the World Wide Web (1998)
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-
Lawrence, S.; Giles, C.L.: Searching the World Wide Web (1998)
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Erlhofer, S.: Suchmaschinen-Optimierung für Webentwickler : Grundlagen, Funktionsweisen und Ranking-Optimierung (2005)
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- RSWK
- World Wide Web / Suchmaschine
Suchmaschine / Web Site / Ranking
- Subject
- World Wide Web / Suchmaschine
Suchmaschine / Web Site / Ranking
-
¬Der Erfolg von Google (2003)
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- Abstract
- Google ist die weltweit größte Suchmaschine und bietet die schnellste und einfachste Informationssuche im Web an. Googles Aufgabe ist die Bereitstellung des besten Suchdienstes im Internet, um die weltweiten Informationen allgemein erreichbar und nutzbar zu machen. Google erreicht über 2 Mrd. Web-Seiten und liefert in meist weniger als einer halben Sekunde relevante Suchergebnisse an Benutzer in aller Welt. Im Augenblick beantwortet Google mehr als 100 Millionen Anfragen pro Tag.
- Content
- "Zwei Stanford-Doktoranden, Larry Page und Sergey Brin, gründeten 1998 Google. Das Unternehmen, das sich in Privatbesitz befindet, gab 1999 bekannt, dass es Eigenkapitalinvestitionen in Höhe von 25 Millionen US$ sicherstellen konnte. Unter den Investoren sind Kleiner Perkins Caufeld & Byers und Sequoia Capital. Google betreibt seinen Dienst auf seiner eigenen, öffentlich zugänglichen Website, www.google.com. Die Firma bietet außerdem unter gemeinsamen Markennamen Informationsdienstleistern Suchlösungen für das Web an. - Die Google-Technologie - Mit einer innovativen Suchtechnik und einer eleganten Benutzeroberfläche setzt sich Google von den Suchmaschinen der ersten Generation ab. Statt nur eine Stichwort- oder Meta-Suchtechnologie zu verwenden, basiert Google auf der zum Patent angemeldeten PageRankTM-Technologie, bei der die wichtigsten Ergebnisse immer zuerst gelistet werden. PageRank unternimmt eine objektive Bewertung der Wichtigkeit von Webseiten, bei der 500 Millionen Variablen und mehr als 2 Milliorden Begriffe verglichen werden. Dabei nutzt PageRank die riesige Link-Struktur des World-Wide-Web als Organisationsmittel. Der Kern der Methode ist dabei, dass Google einen Link von Seite A zu Seite B als ein "Votum" von Seite Afür Seite B interpretiert. Google schätzt die Wichtigkeit einer Seite über dieses Votum ein. Außerdem wird von Google die Seite bewertet, von der das Votum stammt. Googles komplexe, automatische Suchmethoden schließen einen menschlichen Eingriff aus. Im Gegensatzzu anderen Suchmaschinen kannvon Google keine höhere Listung oder eine kommerzielle Veränderung der Ergebnisse gekauft werden. Eine Google-Suche ist ein einfacher, ehrlicher und objektiver Weg, qualitativ hochwertige Websites zu finden."
- Date
- 29. 1.1997 18:49:05
-
Cheong, F.C.: Internet agents : spiders, wanderers, brokers, and bots (1996)
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- RSWK
- Internet / World Wide Web / Computer programming
- Subject
- Internet / World Wide Web / Computer programming
- Theme
- Web-Agenten
-
Weiss, A.: Hop, skip, and jump : navigating the World Wide Web (1995)
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- Abstract
- Reviews the range of specialist browsing tools available to beginners for navigating the WWW. Pays particular attention to Jumpstation 2; the Webcrawler; Lycos; World Wide Web Worm; RBSE; and CUI W3
- Source
- Internet world. 6(1995) no.4, S.41-44
-
Bradley, P.: Advanced Internet searcher's handbook (1998)
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- Footnote
- Rez. in: Information world review. 1999, no.146, S.26 (D. Parr)
- LCSH
- World Wide Web (Information retrieval system)
- Subject
- World Wide Web (Information retrieval system)
-
Machill, M.; Neuberger, C.; Schweiger, W.; Wirth, W.: Wegweiser im Netz : Qualität und Nutzung von Suchmaschinen (2004)
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- Abstract
- Das Internet ist ein Kosmos an Informationen aller Art. Zwar sind die Antworten auf Abermillionen Fragen vorhanden, doch stehen Nutzer vor der Aufgabe, diese auch zu finden. Eine zentrale Rolle spielen dabei Suchmaschinen. Beim Wiederauffinden von Informationen, dem so genannten Information Retrieval, handelt es sich um ein relativ gut erforschtes Feld. Die Forschung konzentrierte sich allerdings lange auf die Frage nach dem Wiederauffinden von Informationen in gut strukturierten Datenbanken. Bis zum Aufkommen des World Wide Web war kaum an eine große Datenkollektion zu denken, die höchst unterschiedlich strukturierte Dokumente enthielt. Hinsichtlich ihrer Strukturierung lassen sich Dokumente in drei Klassen ordnen: strukturiert, unstrukturiert und schwach strukturiert. Im Bereich der professionellen Datenbanken liegen die Informationen in strukturierter Form vor: Dokumente sind in Felder geteilt, die sich gezielt durchsuchen lassen. Zusätzliche Felder enthalten in der Regel Informationen über das Dokument wie beispielsweise den Namen des Autors, das Publikationsdatum oder die Namen von im Text behandelten Personen. So lässt sich beispielsweise die Anfrage nach allen Artikeln eines bestimmten Autors in einer Zeitungsdatenbank einfach und klar beantworten. Bei Web-Dokumenten kann die Suche nicht klar eingeschränkt werden, da nicht unterschieden werden kann, ob es sich bei dem Vorkommen des eingegebenen Namens um den Autor oder eine im Text behandelte Person handelt. Bei unstrukturierten Dokumenten handelt es sich schlicht um Fließtext, dessen formale Gestaltung keinerlei Rückschlüsse auf Meta-Informationen oder Textstellen von besonderer Bedeutung zulässt.
Bei HTML-Dokumenten im World Wide Web handelt es sich um schwach strukturierte Dokumente. Zwar findet keine Trennung in Feldinhalte statt, jedoch lassen sich aus Struktur- und Gestaltungsinformationen, die dem Dokument mittels der HTMLTags beigegeben werden, Rückschlüsse auf bedeutende und weniger bedeutende Textstellen ziehen. Eine zweite Herausforderung an die Information-RetrievalForschung ist schilicht die Größe des World Wide Web. Im Umfeld der professionellen Informationsvermittlung ist es von besonderem Interesse, die Informationen eines bestimmten Bereichs in einer Datenbank zu kumulieren. Natürlich wachsen diese themenbezogenen Datenbanken auch stetig an, das Volumen bleibt jedoch bei einigen Millionen Dokumenten noch »überschaubar«. Im Gegensatz dazu steht das World Wide Web. Zwar kann seine Größe nicht genau ermittelt werden, Schätzungen gehen jedoch inklusive der Invisible-Web-Inhalte von etwa zwölf Milliarden Dokumenten bis 550 Milliarden Dokumenten aus (vgl. Bergman 2001). Der dritte wichtige Punkt, der Information Retrieval in Datenbanken von dem im Internet unterscheidet, ist die Frage nach der Zuverlässigkeit der angebotenen Informationen. Während bei Datenbanken die Auswahl der aufgenommenen Informationen oft noch durch einen menschlichen Indexierer erfolgt, nehmen Suchmaschinen potenziell alle von ihnen aufgefundenen Dokumente in ihren Datenbestand auf.
-
Searching the World Wide Web (1997)
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-
Lu, G.; Williams, B.; You, C.: ¬An effective World Wide Web image search engine (2001)
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-
Head, M.; Archer, N.; Yuan, Y.: World Wide Web navigation aid (2000)
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Mukherjea, S.; Hirata, K.; Hara, Y.: Towards a multimedia World-Wide Web information retrieval engine (1997)
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- Abstract
- Describes a search engine that integrate text and image search. 1 or more Web site can be indexed for both textual and image information, allowing the user to search based on keywords or images or both. Another problem with the current search engines is that they show the results as pages of scrolled lists; this is not very user-friendly. The search engine allows the user to visualise to results in various ways. Explains the indexing and searching techniques of the search engine and highlights several features of the querying interface to make the retrieval process more efficient. Use examples to show the usefulness of the technology
- Date
- 1. 8.1996 22:08:06
- Footnote
- Contribution to a special issue of papers from the 6th International World Wide Web conference, held 7-11 Apr 1997, Santa Clara, California
- Source
- Computer networks and ISDN systems. 29(1997) no.8, S.1181-1191
-
Stock, M.; Stock, W.G.: Internet-Suchwerkzeuge im Vergleich (IV) : Relevance Ranking nach "Popularität" von Webseiten: Google (2001)
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- Abstract
- In unserem Retrievaltest von Suchwerkzeugen im World Wide Web (Password 11/2000) schnitt die Suchmaschine Google am besten ab. Im Vergleich zu anderen Search Engines setzt Google kaum auf Informationslinguistik, sondern auf Algorithmen, die sich aus den Besonderheiten der Web-Dokumente ableiten lassen. Kernstück der informationsstatistischen Technik ist das "PageRank"- Verfahren (benannt nach dem Entwickler Larry Page), das aus der Hypertextstruktur des Web die "Popularität" von Seiten anhand ihrer ein- und ausgehenden Links berechnet. Google besticht durch das Angebot intuitiv verstehbarer Suchbildschirme sowie durch einige sehr nützliche "Kleinigkeiten" wie die Angabe des Rangs einer Seite, Highlighting, Suchen in der Seite, Suchen innerhalb eines Suchergebnisses usw., alles verstaut in einer eigenen Befehlsleiste innerhalb des Browsers. Ähnlich wie RealNames bietet Google mit dem Produkt "AdWords" den Aufkauf von Suchtermen an. Nach einer Reihe von nunmehr vier Password-Artikeln über InternetSuchwerkzeugen im Vergleich wollen wir abschließend zu einer Bewertung kommen. Wie ist der Stand der Technik bei Directories und Search Engines aus informationswissenschaftlicher Sicht einzuschätzen? Werden die "typischen" Internetnutzer, die ja in der Regel keine Information Professionals sind, adäquat bedient? Und können auch Informationsfachleute von den Suchwerkzeugen profitieren?
-
Marchiori, M.: ¬The quest for correct information on the Web : hyper search engines (1997)
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- Abstract
- Presents a novel method to extract from a web object its hyper informative content, in contrast with current search engines, which only deal with the textual information content. This method is not only valuable per se, but it is shown to be able to considerably increase the precision of current search engines. It integrates with existing search engine technology since it can be implemented on top of every search engine, acting as a post-processor, thus automatically transforming a search engine into its corresponding hyper version. Shows how the hyper information can be usefully employed to face the search engines persuasion problem
- Date
- 1. 8.1996 22:08:06
- Footnote
- Contribution to a special issue of papers from the 6th International World Wide Web conference, held 7-11 Apr 1997, Santa Clara, California
- Source
- Computer networks and ISDN systems. 29(1997) no.8, S.1225-1235
-
Bar-Ilan, J.: ¬The use of Web search engines in information science research (2003)
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- Abstract
- The World Wide Web was created in 1989, but it has already become a major information channel and source, influencing our everyday lives, commercial transactions, and scientific communication, to mention just a few areas. The seventeenth-century philosopher Descartes proclaimed, "I think, therefore I am" (cogito, ergo sum). Today the Web is such an integral part of our lives that we could rephrase Descartes' statement as "I have a Web presence, therefore I am." Because many people, companies, and organizations take this notion seriously, in addition to more substantial reasons for publishing information an the Web, the number of Web pages is in the billions and growing constantly. However, it is not sufficient to have a Web presence; tools that enable users to locate Web pages are needed as well. The major tools for discovering and locating information an the Web are search engines. This review discusses the use of Web search engines in information science research. Before going into detail, we should define the terms "information science," "Web search engine," and "use" in the context of this review.
- Date
- 23.10.2005 18:29:16
-
Web work : Information seeking and knowledge work on the World Wide Web (2000)
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-
Carrière, S.J.; Kazman, R.: Webquery : searching and visualising the Web through connectivity (1997)
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- Abstract
- The WebQuery system offers a powerful new method for searching the Web based on connectivity and content. Examines links among the nodes returned in a keyword-based query. Rankes the nodes, giving the highest rank to the most highly connected nodes. By doing so, finds hot spots on the Web that contain information germane to a user's query. WebQuery not only ranks and filters the results of a Web query; it also extends the result set beyond what the search engine retrieves, by finding interesting sites that are highly connected to those sites returned by the original query. Even with WebQuery filering and ranking query results, the result set can be enormous. Explores techniques for visualizing the returned information and discusses the criteria for using each of the technique
- Date
- 1. 8.1996 22:08:06
- Footnote
- Contribution to a special issue of papers from the 6th International World Wide Web conference, held 7-11 Apr 1997, Santa Clara, California
- Source
- Computer networks and ISDN systems. 29(1997) no.8, S.1257-1267
-
Munson, K.I.: Internet search engines : understanding their design to improve information retrieval (2000)
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- Abstract
- The relationship between the methods currently used for indexing the World Wide Web and the programs, languages, and protocols on which the World Wide Web is based is examined. Two methods for indexing the Web are described, directories being briefly discussed while search engines are considered in detail. The automated approach used to create these tools is examined with special emphasis on the parts of a document used in indexing. Shortcomings of the approach are described. Suggestions for effective use of Web search engines are given
