Search (163 results, page 2 of 9)

  • × theme_ss:"Suchmaschinen"
  1. Bager, J.: Weniger ist mehr : Internet-Suchmaschinen richtig einsetzen (1998) 0.02 
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    Date
    29.12.1998 11:22:00
  2. Lob, S.: Per Mausklick auf die neusten Nachrichten : Internet-Suchmaschinen liefern Presse-Überblicke und stellen persönliche Zeitungen zusammen (1998) 0.02 
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    Date
    29.12.1998 11:22:25
  3. Hannemann, M.: Online ins Schlaraffenland der Wissenschaft : Literatur-Recherche im Internet ist ein teures Unterfangen ohne Erfolgsgarantie - Doch wer systematisch sucht, gelangt zügig ans Ziel (1999) 0.02 
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    Date
    3. 5.1997 8:44:22
  4. Lehmann, K.; Machill, M.; Sander-Beuermann, W.: Blackbox Suchmaschine : Politik für Neue Medien. Interview mit Marcel Machill und Wolfgang Sander-Beuermann (2005) 0.02 
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    Abstract
    Google & Co. sind die zentralen Marktplätze im Internet; ohne sie würden sich nur wenige Menschen im Web zurechtfinden. Über 90 Prozent aller Internet-Nutzer greifen deshalb auf Suchmaschinen zurück - nicht immer als kundige Verbraucher, denn sowohl das WWW als auch die Suchmaschinen haben ihre Untiefen. Es beginnt beim Netz der Hyperlinks: Die Zahl der weltweit vorhandenen Webseiten ist technisch nicht zu bestimmen. Die Universität Bielefeld schätzt die Größe des frei zugänglichen WWW Anfang 2005 auf 10-15 Milliarden Seiten; Informationen in Datenbanken, auf geschlossenen und dynamischen Webseiten sowie die mit Webseiten verknüpften Dokumente hier nicht mit eingerechnet. Bei dieser Zahl wird klar, wie wichtig Suchmaschinen sind, um Informationen zu finden. Doch erfassen diese bei weitem nicht alles: Zwar verzeichnete Google im Januar 2005 laut eigener Aussage rund 8 Milliarden Webseiten, doch dürfte ein erheblicher Teil des WWW fehlen. Für Deutschland errechnete Andreas Pothe in einer Untersuchung für das Regionale Rechenzentrum für Niedersachsen, dass von den geschätzten 320 Millionen deutschen Webseiten nur 60 Prozent beim Marktführer Google zu finden seien. Schlusslicht Fireball kennt gerade einmal jede zweite deutsche Domain - und entsprechend weniger Webseiten.
  5. Watters, C.; Amoudi, A.: Geosearcher : location-based ranking of search engine results (2003) 0.02 
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    Abstract
    Waters and Amoudi describe GeoSearcher, a prototype ranking program that arranges search engine results along a geo-spatial dimension without the provision of geo-spatial meta-tags or the use of geo-spatial feature extraction. GeoSearcher uses URL analysis, IptoLL, Whois, and the Getty Thesaurus of Geographic Names to determine site location. It accepts the first 200 sites returned by a search engine, identifies the coordinates, calculates their distance from a reference point and ranks in ascending order by this value. For any retrieved site the system checks if it has already been located in the current session, then sends the domain name to Whois to generate a return of a two letter country code and an area code. With no success the name is stripped one level and resent. If this fails the top level domain is tested for being a country code. Any remaining unmatched names go to IptoLL. Distance is calculated using the center point of the geographic area and a provided reference location. A test run on a set of 100 URLs from a search was successful in locating 90 sites. Eighty three pages could be manually found and 68 had sufficient information to verify location determination. Of these 65 ( 95%) had been assigned reasonably correct geographic locations. A random set of URLs used instead of a search result, yielded 80% success.
  6. Radev, D.R.; Libner, K.; Fan, W.: Getting answers to natural language questions on the Web (2002) 0.02 
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    Abstract
    Seven hundred natural language questions from TREC-8 and TREC-9 were sent by Radev, Libner, and Fan to each of nine web search engines. The top 40 sites returned by each system were stored for evaluation of their productivity of correct answers. Each question per engine was scored as the sum of the reciprocal ranks of identified correct answers. The large number of zero scores gave a positive skew violating the normality assumption for ANOVA, so values were transformed to zero for no hit and one for one or more hits. The non-zero values were then square-root transformed to remove the remaining positive skew. Interactions were observed between search engine and answer type (name, place, date, et cetera), search engine and number of proper nouns in the query, search engine and the need for time limitation, and search engine and total query words. All effects were significant. Shortest queries had the highest mean scores. One or more proper nouns present provides a significant advantage. Non-time dependent queries have an advantage. Place, name, person, and text description had mean scores between .85 and .9 with date at .81 and number at .59. There were significant differences in score by search engine. Search engines found at least one correct answer in between 87.7 and 75.45 of the cases. Google and Northern Light were just short of a 90% hit rate. No evidence indicated that a particular engine was better at answering any particular sort of question.
  7. Weisel, L.: Recherchieren über Google hinaus (2006) 0.02 
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    Abstract
    Das World Wide Web hat in einem Jahrzehnt wie kein anderes Werkzeug die Art und Weise beeinflusst, wie wir recherchieren und fachlich kommunizieren. Die großen drei der Internet-Suchmaschinen bearbeiten schon jetzt laut DER SPIEGEL rund 90 Prozent aller Online-Suchen. Es sei nur noch eine Frage der Zeit, bis ein Suchender mittels "Schieberegler den Schwerpunkt" verändern könne - vom Onlineshoppen hin zum "Fakten" recherchieren. Führende Anbieter von Inhalten koppeln in froher Erwartung deshalb auch Ihre Marketing- und Vertriebsaktivitäten an die Geschäftsmodelle von Google oder Yahoo. Welchen Nutzen zieht daraus der Suchende ? Mit der Vision des "barrierefreien" Zugangs zu Informationen im Milliarden Dollar Markt der Suchmaschinen scheint der kompetente Umgang mit ihnen gewährleistet. Dieser Beitrag wirft einen Blick auf die Informationswelt im Jahre 2005. Es wird unterschieden zwischen der Suche nach Alltagsinformation und Fachinformation. Eine zentrale Rolle bei der Beurteilung von Information spielt der Begriff des Vertrauens. Die Rolle der Informationskompetenz als Basisfähigkeit in Bildung und Beruf und die damit einhergehenden Herausforderungen für Bibliothekare und Informationsspezialisten, Forschende, Lehrende und Lernende, für Verbände und die Politik werden behandelt.
  8. Lewandowski, D.: ¬The retrieval effectiveness of search engines on navigational queries (2011) 0.02 
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    Abstract
    Purpose - The purpose of this paper is to test major web search engines on their performance on navigational queries, i.e. searches for homepages. Design/methodology/approach - In total, 100 user queries are posed to six search engines (Google, Yahoo!, MSN, Ask, Seekport, and Exalead). Users described the desired pages, and the results position of these was recorded. Measured success and mean reciprocal rank are calculated. Findings - The performance of the major search engines Google, Yahoo!, and MSN was found to be the best, with around 90 per cent of queries answered correctly. Ask and Exalead performed worse but received good scores as well. Research limitations/implications - All queries were in German, and the German-language interfaces of the search engines were used. Therefore, the results are only valid for German queries. Practical implications - When designing a search engine to compete with the major search engines, care should be taken on the performance on navigational queries. Users can be influenced easily in their quality ratings of search engines based on this performance. Originality/value - This study systematically compares the major search engines on navigational queries and compares the findings with studies on the retrieval effectiveness of the engines on informational queries.
  9. Hock, R.E.: How to do field searching in Web search engines : a field trip (1998) 0.02 
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    Source
    Online. 22(1998) no.3, S.18-22
  10. Wätjen, H.-J.: Mensch oder Maschine? : Auswahl und Erschließung vonm Informationsressourcen im Internet (1996) 0.02 
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    Date
    2. 2.1996 15:40:22
  11. Loeper, D. von: Sherlock Holmes im Netz (1997) 0.02 
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    Date
    22. 2.1997 19:50:29
  12. Hüskes, R.; Kleber, D.: ¬Den Server im Griff (1999) 0.02 
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    Date
    22. 8.1999 21:21:10
  13. Price, A.: Five new Danish subject gateways under development (2000) 0.02 
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    Date
    22. 6.2002 19:41:31
  14. Eggeling, T.; Kroschel, A.: Alles finden im Web (2000) 0.02 
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    Date
    9. 7.2000 14:06:22
  15. Poulakos, I.: ¬"Die Leute suchen immer dasselbe" (2001) 0.02 
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    Date
    18. 1.1997 12:15:22
  16. Sauer, D.: Alles schneller finden (2001) 0.02 
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    Date
    11.11.2001 17:25:22
  17. Breyer, K.: Kommerz statt Information (2002) 0.02 
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    Date
    9. 5.2002 21:21:22
  18. Babiak, U.: Effektive Suche im Internet : Suchstrategien, Methoden, Quellen (1998) 0.02 
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    Signature
    77 TWP 3911(2)+22
  19. Klaus, H.: ¬Das Internet als Recherchemethode im Medizin-Journalismus : Meinung und Akzeptanz der Wissenschaftsjournalisten (2000) 0.02 
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    Source
    Information und Öffentlichkeit: 1. Gemeinsamer Kongress der Bundesvereinigung Deutscher Bibliotheksverbände e.V. (BDB) und der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. (DGI), Leipzig, 20.-23.3.2000. Zugleich 90. Deutscher Bibliothekartag, 52. Jahrestagung der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. (DGI). Hrsg.: G. Ruppelt u. H. Neißer
  20. DPA/FR: Google im Visier : Umstrittene Datenspeicherung (2007) 0.02 
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    Content
    "Google ist wegen der Speicherung von Suchanfragen im Visier von EU-Datenschützern. Mit der Bevorratung der Suchanfragen verletzt der Suchmaschinenspezialist möglicherweise die Datenschutzgesetze. Die so genannte Artikel-29-Gruppe - das sind unabhängige Experten aus der Europäischen Union - verlangt in einem Brief Auskunft von Google über die Speicherpraxis. Ein Sprecher von EU-Justizkommissar Franco Frattini sagte am Freitag in Brüssel: "Der Kommissar hält die in dem Brief gestellen Fragen für angemessen." Es bleibe nun abzuwarten, welche Antworten das Unternehmen gibt. Der. Vorsitzende der Artikel-29-Gruppe ist der deutsche Datenschutzbeauftragte Peter Schaar. Wie die Finanznachrichtenagentur Bloomberg am Freitag berichtete, will Google noch vor der nächsten Sitzung der Beratergruppe im Juni eine Stellungnahme abgeben. Peter Fleischer, Google Datenschutz-Experte in Paris, sagte, das Unternehmen sehe sich verpflichtet, einen konstruktiven Dialog mit den Datenschützern zu führen. Noch bis vor kurzem speicherte das Unternehmen bei jeder Suche weltweit jeweils den vom Nutzer eingegebenen Suchbegriff und die Internet-Protokoll-Adresse seines Computers auf unbestimmte Zeit. Dies sei vor allem aus Sicherheitsgründen geschehen, stellte das Unternehmen fest. Vor wenigen Wochen schränkte Google die Bevorratung auf eineinhalb bis zwei Jahre ein. Dies sei zwar ein Schritt in die richtige Richtung, reiche aber vermutlich nicht aus, sagte Datenschützer Schaar. Auch wem Google derzeit im Rampenlicht steht, dürften solche Datenschutz-Bedenken mehrere große Unternehmen betreffen. So speichern auch Google-Konkurrenten wie Yahoo oder Microsoft die Daten der Nutzer der Portale oder Suchmaschinen, um Nutzergruppen gezielt mit Werbeanzeigen bedienen zu können. Wie Bloomberg berichtet, seien bei Yahoo oder Microsoft allerdings noch keine entsprechenden Anfragen der Datenschützer eingetroffen. Bei Suchmaschinenanfragen im deut schen Internet besitzt Google einen Marktanteil von über 90 Prozent. Das Unternehmen expandiert mit rasanter Geschwindigkeit Der Internetkonzern steigerte den Gewinn im ersten Quartal um fast 70 Prozent auf eine Milliarde Dollar. Der Umsatz war mit knapp 3,7 Milliarden Dollar (2,7 Milliarden Euro) um 63 Prozent höher als in der Vorjahreszeit."

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