Search (187 results, page 1 of 10)

  • × theme_ss:"Suchmaschinen"
  1. Shapira, B.; Zabar, B.: Personalized search : integrating collaboration and social networks (2011) 0.08 
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    Abstract
    Despite improvements in their capabilities, search engines still fail to provide users with only relevant results. One reason is that most search engines implement a "one size fits all" approach that ignores personal preferences when retrieving the results of a user's query. Recent studies (Smyth, 2010) have elaborated the importance of personalizing search results and have proposed integrating recommender system methods for enhancing results using contextual and extrinsic information that might indicate the user's actual needs. In this article, we review recommender system methods used for personalizing and improving search results and examine the effect of two such methods that are merged for this purpose. One method is based on collaborative users' knowledge; the second integrates information from the user's social network. We propose new methods for collaborative-and social-based search and demonstrate that each of these methods, when separately applied, produce more accurate search results than does a purely keyword-based search engine (referred to as "standard search engine"), where the social search engine is more accurate than is the collaborative one. However, separately applied, these methods do not produce a sufficient number of results (low coverage). Nevertheless, merging these methods with those implemented by standard search engines overcomes the low-coverage problem and produces personalized results for users that display significantly more accurate results while also providing sufficient coverage than do standard search engines. The improvement, however, is significant only for topics for which the diversity of terms used for queries among users is low.
  2. Next generation search engines : advanced models for information retrieval (2012) 0.06 
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    Abstract
    Recent technological progress in computer science, Web technologies, and constantly evolving information available on the Internet has drastically changed the landscape of search and access to information. Web search has significantly evolved in recent years. In the beginning, web search engines such as Google and Yahoo! were only providing search service over text documents. Aggregated search was one of the first steps to go beyond text search, and was the beginning of a new era for information seeking and retrieval. These days, new web search engines support aggregated search over a number of vertices, and blend different types of documents (e.g., images, videos) in their search results. New search engines employ advanced techniques involving machine learning, computational linguistics and psychology, user interaction and modeling, information visualization, Web engineering, artificial intelligence, distributed systems, social networks, statistical analysis, semantic analysis, and technologies over query sessions. Documents no longer exist on their own; they are connected to other documents, they are associated with users and their position in a social network, and they can be mapped onto a variety of ontologies. Similarly, retrieval tasks have become more interactive and are solidly embedded in a user's geospatial, social, and historical context. It is conjectured that new breakthroughs in information retrieval will not come from smarter algorithms that better exploit existing information sources, but from new retrieval algorithms that can intelligently use and combine new sources of contextual metadata.
    With the rapid growth of web-based applications, such as search engines, Facebook, and Twitter, the development of effective and personalized information retrieval techniques and of user interfaces is essential. The amount of shared information and of social networks has also considerably grown, requiring metadata for new sources of information, like Wikipedia and ODP. These metadata have to provide classification information for a wide range of topics, as well as for social networking sites like Twitter, and Facebook, each of which provides additional preferences, tagging information and social contexts. Due to the explosion of social networks and other metadata sources, it is an opportune time to identify ways to exploit such metadata in IR tasks such as user modeling, query understanding, and personalization, to name a few. Although the use of traditional metadata such as html text, web page titles, and anchor text is fairly well-understood, the use of category information, user behavior data, and geographical information is just beginning to be studied. This book is intended for scientists and decision-makers who wish to gain working knowledge about search engines in order to evaluate available solutions and to dialogue with software and data providers.
    Content
    Enthält die Beiträge: Das, A., A. Jain: Indexing the World Wide Web: the journey so far. Ke, W.: Decentralized search and the clustering paradox in large scale information networks. Roux, M.: Metadata for search engines: what can be learned from e-Sciences? Fluhr, C.: Crosslingual access to photo databases. Djioua, B., J.-P. Desclés u. M. Alrahabi: Searching and mining with semantic categories. Ghorbel, H., A. Bahri u. R. Bouaziz: Fuzzy ontologies building platform for Semantic Web: FOB platform. Lassalle, E., E. Lassalle: Semantic models in information retrieval. Berry, M.W., R. Esau u. B. Kiefer: The use of text mining techniques in electronic discovery for legal matters. Sleem-Amer, M., I. Bigorgne u. S. Brizard u.a.: Intelligent semantic search engines for opinion and sentiment mining. Hoeber, O.: Human-centred Web search.
  3. Burghardt, M.; Heckner, M.; Wolff, C.: Social Search (2011) 0.05 
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    Abstract
    Social Search beschreibt die Einbeziehung des sozialen Kontexts in den Prozess der Informationssuche. Der folgende Beitrag zeigt die Entwicklung sozialer Suche auf und systematisiert den Bereich von Social Search Engines im WWW durch eine grundlegende Unterscheidung verschiedener Social-SearchKonzepte. Durch die Beschreibung typischer Merkmale bestehender Social-Search-Implementierungen werden diese überschau- und vergleichbar gemacht.
  4. Amato, G.; Rabitti, F.; Savino, P.: Multimedia document search on the Web (1998) 0.05 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 30(1998) nos.1/7, S.604-606
  5. Place, E.: Internationale Zusammenarbeit bei Internet Subject Gateways (1999) 0.05 
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    Abstract
    Eine ganze Anzahl von Bibliotheken in Europa befaßt sich mit der Entwicklung von Internet Subject Gateways - einer Serviceleistung, die den Nutzern helfen soll, qualitativ hochwertige Internetquellen zu finden. Subject Gateways wie SOSIG (The Social Science Information Gateway) sind bereits seit einigen Jahren im Internet verfügbar und stellen eine Alternative zu Internet-Suchmaschinen wie AltaVista und Verzeichnissen wie Yahoo dar. Bezeichnenderweise stützen sich Subject Gateways auf die Fertigkeiten, Verfahrensweisen und Standards der internationalen Bibliothekswelt und wenden diese auf Informationen aus dem Internet an. Dieses Referat will daher betonen, daß Bibliothekare/innen idealerweise eine vorherrschende Rolle im Aufbau von Suchservices für Internetquellen spielen und daß Information Gateways eine Möglichkeit dafür darstellen. Es wird einige der Subject Gateway-Initiativen in Europa umreißen und die Werkzeuge und Technologien beschreiben, die vom Projekt DESIRE entwickelt wurden, um die Entwicklung neuer Gateways in anderen Ländern zu unterstützen. Es wird auch erörtert, wie IMesh, eine Gruppe für Gateways aus der ganzen Welt eine internationale Strategie für Gateways anstrebt und versucht, Standards zur Umsetzung dieses Projekts zu entwickeln
    Date
    22. 6.2002 19:35:09
  6. Marchiori, M.: ¬The quest for correct information on the Web : hyper search engines (1997) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 29(1997) no.8, S.1225-1235
  7. Chang, C.-H.; Hsu, C.-C.: Customizable multi-engine search tool with clustering (1997) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 29(1997) no.8, S.1217-1224
  8. Kurzke, C.; Galle, M.; Bathelt, M.: WebAssistant : a user profile specific information retrieval assistant (1998) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 30(1998) nos.1/7, S.654-655
  9. Lawrence, S.; Giles, C.L.: Inquirus, the NECI meta search engine (1998) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 30(1998) nos.1/7, S.95-105
  10. Jenkins, C.: Automatic classification of Web resources using Java and Dewey Decimal Classification (1998) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 30(1998) nos.1/7, S.646-648
  11. Hiom, D.: SOSIG : an Internet hub for the social sciences, business and law (2000) 0.04 
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    Abstract
    SOSIG (Social Science Information Gateway) aims to provide a trusted source of selected, high quality Internet information for researchers and practitioners in the social sciences, business and law. This article tracks the the development of the gateway since its inception in 1994, describes the current features and looks at some of the associated research and development areas that are taking place around the service including the automatic classification of Web resources and experiments with multilingual thesauri
  12. Place, E.: International collaboration on Internet subject gateways (2000) 0.04 
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    Abstract
    Eine ganze Anzahl von Bibliotheken in Europa befaßt sich mit der Entwicklung von Internet Subject Gateways - einer Serviceleistung, die den Nutzern helfen soll, qualitativ hochwertige Internetquellen zu finden. Subject Gateways wie SOSIG (The Social Science Information Gateway) sind bereits seit einigen Jahren im Internet verfügbar und stellen eine Alternative zu Internet-Suchmaschinen wie AltaVista und Verzeichnissen wie Yahoo dar. Bezeichnenderweise stützen sich Subject Gateways auf die Fertigkeiten, Verfahrensweisen und Standards der internationalen Bibliothekswelt und wenden diese auf Informationen aus dem Internet an. Dieses Referat will daher betonen, daß Bibliothekare/innen idealerweise eine vorherrschende Rolle im Aufbau von Suchservices für Internetquellen spielen und daß Information Gateways eine Möglichkeit dafür darstellen. Es wird einige der Subject Gateway-Initiativen in Europa umreißen und die Werkzeuge und Technologien beschreiben, die vom Projekt DESIRE entwickelt wurden, um die Entwicklung neuer Gateways in anderen Ländern zu unterstützen. Es wird auch erörtert, wie IMesh, eine Gruppe für Gateways aus der ganzen Welt eine internationale Strategie für Gateways anstrebt und versucht, Standards zur Umsetzung dieses Projekts zu entwickeln
    Date
    22. 6.2002 19:35:35
  13. Chaudiron, S.; Ihadjadene, M.: Studying Web search engines from a user perspective : key concepts and main approaches (2012) 0.04 
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    Abstract
    This chapter shows that the wider use of Web search engines, reconsidering the theoretical and methodological frameworks to grasp new information practices. Beginning with an overview of the recent challenges implied by the dynamic nature of the Web, this chapter then traces the information behavior related concepts in order to present the different approaches from the user perspective. The authors pay special attention to the concept of "information practice" and other related concepts such as "use", "activity", and "behavior" largely used in the literature but not always strictly defined. The authors provide an overview of user-oriented studies that are meaningful to understand the different contexts of use of electronic information access systems, focusing on five approaches: the system-oriented approaches, the theories of information seeking, the cognitive and psychological approaches, the management science approaches, and the marketing approaches. Future directions of work are then shaped, including social searching and the ethical, cultural, and political dimensions of Web search engines. The authors conclude considering the importance of Critical theory to better understand the role of Web Search engines in our modern society.
    Date
    20. 4.2012 13:22:37
  14. Carrière, S.J.; Kazman, R.: Webquery : searching and visualising the Web through connectivity (1997) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 29(1997) no.8, S.1257-1267
  15. Mukherjea, S.; Hirata, K.; Hara, Y.: Towards a multimedia World-Wide Web information retrieval engine (1997) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 29(1997) no.8, S.1181-1191
  16. Ardo, A.; Lundberg, S.: ¬A regional distributed WWW search and indexing service : the DESIRE way (1998) 0.04 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 30(1998) nos.1/7, S.149-159
  17. Hentschel, A.; Schmidt, M.: Google: erste Krise (2008) 0.04 
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    Abstract
    Die Nummer eins der Suchmaschinen strauchelt. Die Erfolgsstory von Web 2.0 und Social Networks bereitet Google Probleme. Der Gigant sieht seine Nutzer nicht mehr
    Content
    Doch auch mit den Menschen im Internet hadert Google. Schon vergangenes Jahr bettelte Google-Chef Eric Schmidt bei den Nutzern um die Preisgabe persönlicher Informationen: "Wir können nicht einmal die einfachsten Fragen beantworten, weil wir zu wenig über euch wissen" Dass es Probleme geben könnte, wusste Google freilich schon länger. Wie verzweifelt die Führungsriege tatsächlich ist, zeigen die 900 Millionen Dollar, mit denen sich die Suchmaschine im Sommer 2006 in die Web-Community MySpace einkaufte. Der Deal klingt eigentlich absurd - schließlich zahlte der Branchen-Primus das Geld, damit er seinen Such-Service anbieten kann. Natürlich ist das nur die halbe Geschichte. ,Wir halten es für wichtig, dass wir Google dorthin bringen, wo die User sind, und die wenden sich immer stärker Seiten mit selbst geschaffenen Inhalten zu", sagte seinerzeit Eric Schmidt. Doch die User verstecken sich, schalten ihre Profile auf den Status "Privat" und sind damit weiterhin unsichtbar und wertlos für Google. Und so geht es der Suchmaschine in nahezu jedem Social Network: Weltweit etwa 300 Millionen Nutzer solcher Netzwerke bekommt Google nicht zu Gesicht. Xing, facebook oder studiVZ sind beliebt bei den Surfern - und für Google unerreichbar. Doch ausgerechnet im Sammeln der dort preisgegebenen Daten sieht Google mittlerweile seine Existenzgrundlage. Der scheinbare Ausweg aus dem Dilemma heißt OpenSocial. Das ist eine Sammlung standardisierter Programmierschnittstellen (APIs) für webbasierte soziale Netzwerke. Mithilfe solcher APIs lassen sich Widgets programmieren - oder aber auch die in Datenbanken versteckten Nutzerprofile auslesen. Joe Kraus, bei Google verantwortlich für OpenSocial, nannte es einmal ganz unverhohlen "eine fantastische Monetarisierungsplattform". Auf Deutsch: ein Goldesel. Spürhund: Auf der verzweifelten Suche nach den Userdaten Fraglich ist allerdings, ob die Nutzer Google an ihre Daten lassen. Drei Viertel aller Surfer rebellieren ja bereits, wenn Google nur über die an sich relativ nutzlose IP-Adresse auf frühere Suchen der Personen schließt, fand der Autor Gerald Reischl für sein gerade erschienenes Buch "Die Google-Falle" heraus. Wie solch ein Protest praktisch aussieht, erfuhren die Betreiber des Studenten-Netzwerkes studiVZ Ende letzten Jahres: Reichlich unbedarft verkündeten sie ihren Nutzern, deren persönliche Daten zukünftig auch für Werbezwecke einzusetzen. Die Community machte das, was man eigentlich auch von ihr erwarten durfte: Sie organisierte sich gegen den befürchteten Ausverkauf und zwang studiVZ schließlich, den fraglichen Passus aus den Geschäftsbedingungen zu streichen. Selbst die Netzwerke, die OpenSocial unterstützen, halten nichts davon, dass sich Google über die Nutzerprofile hermacht, um seine Werbeeinnahmen zu steigern. Zumindest nicht die deutschen: "Es ist nicht in unserem Sinne, dass es bei der Nutzung von auf OpenSocial basierten Widgets zu einem Datenaustausch mit Google oder Dritten kommt", sagt Daniela Hinrichs, Pressesprecherin des Business-Netzwerkes Xing. "Das wäre aufgrund der strengenDatenschutzbestimmungen und unserer AGB überhaupt nicht zulässig - und es ist auch nicht gewollt.""
  18. Neubauer, R.: Meine Glotze, deine Glotze : Google sichert sich die Internet-Videoplattform You Tube für 1,65 Milliarden Dollar / 72 Millionen Nutzer lassen die Werbeeinnahmen explodieren (2006) 0.04 
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    Abstract
    "Xchylerjfk" mag You Tube. Die junge Frau, die hinter diesem verqueren Internet-Namen steckt, mag die Website für Amateurvideos "so, wie sie ist". Und so sehr, dass sie nun ganz aufgeregt ein Kurzvideo für You Tube gedreht hat und darin schimpft: "Sie wollen die Welt beherrschen." Gemeint ist Google, der neue Eigentümer von You Tube. Denn die Internet-Suchmaschine Google übernimmt für 1,65 Milliarden Dollar You Tube (übersetzt etwa: deine Glotze), eine Website, die in weniger als zwei Jahren von einer Idee, ausgeheckt beim Abendessen, zum kulturellen Massenphänomen aufstieg. "Wir wollten unabhängig bleiben", begründete der 29 Jahre alte You-Tube-Chef Chad Hurley in der Nacht zum Dienstag gegenüber der Agentur Reuters, warum er und sein Mitbegründer Steve Chen (27) Google den Zuschlag gaben. Google habe Selbstständigkeit versprochen und sein technisches Wissen könne You Tube dem Ziel näher bringen, die unterhaltsamste Video-Seite im Internet zu sein. "Jetzt haben wir mit Google die Ressourcen hinter uns, um diese Vision zu verwirklichen`; sagte Hurley. Hurley verriet nicht, wie viel Geld er und Chen bei der Übernahme einstreichen. Ein dritter Mitbegründer - Jawed Karim - hatte You Tube verlassen, kurz bevor das Jungunternehmen erstmals 3,5 Millionen Dollar Startkapital von Sequoia Capital ergatterte - diese Firma hatte auch Google in der Start-phase mit Kapital versorgt. Laut Wall Street Journal besitzt Sequoia Capital knapp ein Drittel von You Tube. Der Kauf ist die teuerste Neuerwerbung in der achtjährigen Firmengeschichte und sichert Google die führende Rolle im wachsenden Online-Markt für Videos. Schräge Videoclips boomen ebenso im Internet wie so genannte Social Networks, etwa die Kennenlern-Plattform My Space. Etablierte Medien und Internetfirmen wollen ein Stück vom Kuchen.
  19. Peters, I.: Folksonomies und kollaborative Informationsdienste : eine Alternative zur Websuche? (2011) 0.03 
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    Abstract
    Folksonomies ermöglichen den Nutzern in Kollaborativen Informationsdiensten den Zugang zu verschiedenartigen Informationsressourcen. In welchen Fällen beide Bestandteile des Web 2.0 am besten für das Information Retrieval geeignet sind und wo sie die Websuche ggf. ersetzen können, wird in diesem Beitrag diskutiert. Dazu erfolgt eine detaillierte Betrachtung der Reichweite von Social-Bookmarking-Systemen und Sharing-Systemen sowie der Retrievaleffektivität von Folksonomies innerhalb von Kollaborativen Informationsdiensten.
    Theme
    Social tagging
  20. Cooke, A.: ¬A guide to finding quality information on the Internet : selection and evaluation strategies (1999) 0.03 
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    LCSH
    Library information networks
    Subject
    Library information networks

Authors

Years

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  • e 91
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  • m 14
  • el 13
  • s 3
  • p 2
  • r 2
  • x 2
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