Search (38 results, page 1 of 2)

  • × theme_ss:"Semantic Web"
  • × type_ss:"el"
  • × year_i:[2000 TO 2010}
  1. Studer, R.; Studer, H.-P.; Studer, A.: Semantisches Knowledge Retrieval (2001) 0.03 
    0.026110703 = product of:
  0.06527676 = sum of:
    0.019249868 = weight(_text_:information in 4322) [ClassicSimilarity], result of:
      0.019249868 = score(doc=4322,freq=8.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.23274569 = fieldWeight in 4322, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4322)
    0.046026893 = weight(_text_:und in 4322) [ClassicSimilarity], result of:
      0.046026893 = score(doc=4322,freq=18.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.4407773 = fieldWeight in 4322, product of:
          4.2426405 = tf(freq=18.0), with freq of:
            18.0 = termFreq=18.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=4322)
  0.4 = coord(2/5)
    Abstract
    Dieses Whitepaper befasst sich mit der Integration semantischer Technologien in bestehende Ansätze des Information Retrieval und die damit verbundenen weitreichenden Auswirkungen auf Effizienz und Effektivität von Suche und Navigation in Dokumenten. Nach einer Einbettung in die Problematik des Wissensmanagement aus Sicht der Informationstechnik folgt ein Überblick zu den Methoden des Information Retrieval. Anschließend werden die semantischen Technologien "Wissen modellieren - Ontologie" und "Neues Wissen ableiten - Inferenz" vorgestellt. Ein Integrationsansatz wird im Folgenden diskutiert und die entstehenden Mehrwerte präsentiert. Insbesondere ergeben sich Erweiterungen hinsichtlich einer verfeinerten Suchunterstützung und einer kontextbezogenen Navigation sowie die Möglichkeiten der Auswertung von regelbasierten Zusammenhängen und einfache Integration von strukturierten Informationsquellen. Das Whitepaper schließt mit einem Ausblick auf die zukünftige Entwicklung des WWW hin zu einem Semantic Web und die damit verbundenen Implikationen für semantische Technologien.
    Content
    Inhalt: 1. Einführung - 2. Wissensmanagement - 3. Information Retrieval - 3.1. Methoden und Techniken - 3.2. Information Retrieval in der Anwendung - 4. Semantische Ansätze - 4.1. Wissen modellieren - Ontologie - 4.2. Neues Wissen inferieren - 5. Knowledge Retrieval in der Anwendung - 6. Zukunftsaussichten - 7. Fazit
  2. Scheir, P.; Pammer, V.; Lindstaedt, S.N.: Information retrieval on the Semantic Web : does it exist? (2007) 0.02 
    0.017203344 = product of:
  0.043008357 = sum of:
    0.02510901 = weight(_text_:information in 4329) [ClassicSimilarity], result of:
      0.02510901 = score(doc=4329,freq=10.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.3035872 = fieldWeight in 4329, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4329)
    0.017899347 = weight(_text_:und in 4329) [ClassicSimilarity], result of:
      0.017899347 = score(doc=4329,freq=2.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.17141339 = fieldWeight in 4329, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4329)
  0.4 = coord(2/5)
    Abstract
    Plenty of contemporary attempts to search exist that are associated with the area of Semantic Web. But which of them qualify as information retrieval for the Semantic Web? Do such approaches exist? To answer these questions we take a look at the nature of the Semantic Web and Semantic Desktop and at definitions for information and data retrieval. We survey current approaches referred to by their authors as information retrieval for the Semantic Web or that use Semantic Web technology for search.
    Content
    Enthält einen Überblick über Modelle, Systeme und Projekte
    Source
    Lernen - Wissen - Adaption : workshop proceedings / LWA 2007, Halle, September 2007. Martin Luther University Halle-Wittenberg, Institute for Informatics, Databases and Information Systems. Hrsg.: Alexander Hinneburg
  3. Heflin, J.; Hendler, J.: Semantic interoperability on the Web (2000) 0.01 
    0.013428268 = product of:
  0.03357067 = sum of:
    0.01122909 = weight(_text_:information in 759) [ClassicSimilarity], result of:
      0.01122909 = score(doc=759,freq=2.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.13576832 = fieldWeight in 759, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=759)
    0.022341577 = product of:
      0.044683155 = sum of:
        0.044683155 = weight(_text_:22 in 759) [ClassicSimilarity], result of:
          0.044683155 = score(doc=759,freq=2.0), product of:
            0.1649855 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047114085 = queryNorm
            0.2708308 = fieldWeight in 759, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=759)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
    Abstract
    XML will have a profound impact on the way data is exchanged on the Internet. An important feature of this language is the separation of content from presentation, which makes it easier to select and/or reformat the data. However, due to the likelihood of numerous industry and domain specific DTDs, those who wish to integrate information will still be faced with the problem of semantic interoperability. In this paper we discuss why this problem is not solved by XML, and then discuss why the Resource Description Framework is only a partial solution. We then present the SHOE language, which we feel has many of the features necessary to enable a semantic web, and describe an existing set of tools that make it easy to use the language.
    Date
    11. 5.2013 19:22:18
  4. Hüsken, P.: Information Retrieval im Semantic Web (2006) 0.01 
    0.011581604 = product of:
  0.02895401 = sum of:
    0.0136117125 = weight(_text_:information in 4333) [ClassicSimilarity], result of:
      0.0136117125 = score(doc=4333,freq=4.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.16457605 = fieldWeight in 4333, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4333)
    0.015342298 = weight(_text_:und in 4333) [ClassicSimilarity], result of:
      0.015342298 = score(doc=4333,freq=2.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.14692576 = fieldWeight in 4333, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=4333)
  0.4 = coord(2/5)
    Abstract
    Das Semantic Web bezeichnet ein erweitertes World Wide Web (WWW), das die Bedeutung von präsentierten Inhalten in neuen standardisierten Sprachen wie RDF Schema und OWL modelliert. Diese Arbeit befasst sich mit dem Aspekt des Information Retrieval, d.h. es wird untersucht, in wie weit Methoden der Informationssuche sich auf modelliertes Wissen übertragen lassen. Die kennzeichnenden Merkmale von IR-Systemen wie vage Anfragen sowie die Unterstützung unsicheren Wissens werden im Kontext des Semantic Web behandelt. Im Fokus steht die Suche nach Fakten innerhalb einer Wissensdomäne, die entweder explizit modelliert sind oder implizit durch die Anwendung von Inferenz abgeleitet werden können. Aufbauend auf der an der Universität Duisburg-Essen entwickelten Retrievalmaschine PIRE wird die Anwendung unsicherer Inferenz mit probabilistischer Prädikatenlogik (pDatalog) implementiert.
  5. Ulrich, W.: Simple Knowledge Organisation System (2007) 0.01 
    0.010629456 = product of:
  0.05314728 = sum of:
    0.05314728 = weight(_text_:und in 105) [ClassicSimilarity], result of:
      0.05314728 = score(doc=105,freq=6.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.5089658 = fieldWeight in 105, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.09375 = fieldNorm(doc=105)
  0.2 = coord(1/5)
    Content
    Semantic Web - Taxonomie und Thesaurus - SKOS - Historie - Klassen und Eigenschaften - Beispiele - Generierung - automatisiert - per Folksonomie - Fazit und Ausblick
  6. Sigel, A.: Informationsintegration mit semantischen Wissenstechnologien (2006) 0.01 
    0.009471444 = product of:
  0.04735722 = sum of:
    0.04735722 = weight(_text_:und in 5174) [ClassicSimilarity], result of:
      0.04735722 = score(doc=5174,freq=14.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.4535172 = fieldWeight in 5174, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5174)
  0.2 = coord(1/5)
    Abstract
    Das Tutorium vermittelt theoretische Grundlagen der wissensorganisatorischen (semantischen) Integration und zeigt auch einige praktische Beispiele. Die Integration bezieht sich auf die Ebenen: Integration von ähnlichen Einträgen in verschiedenen Ontologien (Begriffe und Beziehungen) sowie von Aussagen über gleiche Aussagegegenstände und zugehörige Informationsressourcen. Hierzu werden ausgewählte semantische Wissenstechnologien (Topic Maps und RDF) und -werkzeuge vorgestellt und mit wissensorganisatorischen Grundlagen verbunden (z.B. SKOS - Simple Knowledge Organization Systems, http://www.w3.org/2004/02/skos/, oder Published Resource Identifiers).
    Content
    Tutorium auf der 10. Deutschen ISKO-Tagung (Wissensorganisation 2006): Kompatibilität und Heterogenität in der Wissensorganisation Universität Wien, Montag 03. Juli 2006.
  7. Dextre Clarke, S.G.: Challenges and opportunities for KOS standards (2007) 0.01 
    0.0089366315 = product of:
  0.044683155 = sum of:
    0.044683155 = product of:
      0.08936631 = sum of:
        0.08936631 = weight(_text_:22 in 4643) [ClassicSimilarity], result of:
          0.08936631 = score(doc=4643,freq=2.0), product of:
            0.1649855 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047114085 = queryNorm
            0.5416616 = fieldWeight in 4643, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=4643)
      0.5 = coord(1/2)
  0.2 = coord(1/5)
    Date
    22. 9.2007 15:41:14
  8. Brake, M.: ¬Das Semantische Web : Eine Vision in der Halbzeit (2005) 0.01 
    0.008768854 = product of:
  0.043844268 = sum of:
    0.043844268 = weight(_text_:und in 4764) [ClassicSimilarity], result of:
      0.043844268 = score(doc=4764,freq=12.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.41987535 = fieldWeight in 4764, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4764)
  0.2 = coord(1/5)
    Abstract
    Mit der Veröffentlichung der ersten Website 1989 am CERN gab Timothy J. Berners-Lee den Startschuss für das WorldWideWeb, diesem ständig expandierenden Konvolut aus digitalisierten Daten, vernetzten Maschinen und Menschen. Mittlerweile nimmt das Netz für sich in Anspruch, das Weltwissen zu repräsentieren und hat in seiner Gesamtheit längst die klassische Vorstellung von einer Enzyklopädie abgelöst und übertroffen. Andererseits ist das Netz trotz geballter Wissensansammlung und Rechenpower immer noch dumm. Seit fast einer Dekade ist nun das "verständige" Internet in der Diskussion, die Semantic Web Days in München und die Semantics in Wien zogen eine Zwischenbilanz und zeigten ein mittlerweile weites Spektrum von Praxisanwendungen.
  9. Broughton, V.: Automatic metadata generation : Digital resource description without human intervention (2007) 0.01 
    0.0076599694 = product of:
  0.038299847 = sum of:
    0.038299847 = product of:
      0.076599695 = sum of:
        0.076599695 = weight(_text_:22 in 6048) [ClassicSimilarity], result of:
          0.076599695 = score(doc=6048,freq=2.0), product of:
            0.1649855 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047114085 = queryNorm
            0.46428138 = fieldWeight in 6048, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=6048)
      0.5 = coord(1/2)
  0.2 = coord(1/5)
    Date
    22. 9.2007 15:41:14
  10. Tudhope, D.: Knowledge Organization System Services : brief review of NKOS activities and possibility of KOS registries (2007) 0.01 
    0.0076599694 = product of:
  0.038299847 = sum of:
    0.038299847 = product of:
      0.076599695 = sum of:
        0.076599695 = weight(_text_:22 in 100) [ClassicSimilarity], result of:
          0.076599695 = score(doc=100,freq=2.0), product of:
            0.1649855 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047114085 = queryNorm
            0.46428138 = fieldWeight in 100, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=100)
      0.5 = coord(1/2)
  0.2 = coord(1/5)
    Date
    22. 9.2007 15:41:14
  11. Cazan, C.: Medizinische Ontologien : das Ende des MeSH (2006) 0.01 
    0.007654083 = product of:
  0.038270414 = sum of:
    0.038270414 = weight(_text_:und in 132) [ClassicSimilarity], result of:
      0.038270414 = score(doc=132,freq=28.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.36649725 = fieldWeight in 132, product of:
          5.2915025 = tf(freq=28.0), with freq of:
            28.0 = termFreq=28.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.03125 = fieldNorm(doc=132)
  0.2 = coord(1/5)
    Abstract
    Die Komplexizität medizinischer Fragestellungen und des medizinischen Informationsmanagements war seit den Anfängen der Informatik immer ein besonders wichtiges Thema. Trotz des Scheiterns der Künstlichen Intelligenz in den 80er Jahren des vorigen Jahrhunderts haben deren Kernideen Früchte getragen. Durch kongruente Entwicklung einer Reihe anderer Wissenschaftsdisziplinen und der exponentiellen Entwicklung im Bereich Computerhardware konnten die gestellten, hohen Anforderungen bei der medizinischen Informationssuche doch noch erfüllt werden. Die programmatische Forderung von Tim Berners-Lee betreffend "Semantic Web" im Jahr 2000 hat dem Thema Ontologien für maschinenlesbare Repositorien in Allgemein- und Fachsprache breitere Aufmerksamkeit gewonnen. Da in der Medizin (PubMed) mit dem von NLM schon vor 20 Jahren entwickelten Unified Medical Language System (UMLS) eine funktionierende Ontologie in Form eines semantischen Netzes in Betrieb ist, ist es auch für Medizinbibliothekare und Medizindokumentare hoch an der Zeit, sich damit zu beschäftigen. Ontologien können im Wesen, trotz der informatisch vernebelnden Terminologie, als Werkzeuge der Klassifikation verstanden werden. Hier sind von seiten der Bibliotheks- und Dokumentationswissenschaft wesentliche Beiträge möglich. Der vorliegende Bericht bietet einen Einstieg in das Thema, erklärt wesentliche Elemente des UMLS und schließt mit einer kommentierten Anmerkungs- und Literaturliste für die weitere Beschäftigung mit Ontologien.
    Content
    Dieser Aufsatz ist kein Abgesang auf MeSH (= Medical Subject Headings in Medline/PubMed), wie man/frau vielleicht vermuten könnte. Vielmehr wird - ohne informatiklastiges Fachchinesisch - an Hand des von der National Library of Medicine entwickelten Unified Medical Language System erklärt, worin die Anforderungen an Ontologien bestehen, die im Zusammenhang mit dem Semantic Web allerorten eingefordert und herbeigewünscht werden. Eine Lektüre für Einsteigerinnen, die zum Vertiefen der gewonnenen Begriffssicherheit an Hand der weiterführenden Literaturhinweise anregt. Da das UMLS hier vor allem als Beispiel verwendet wird, werden auch Bibliothekarlnnen, Dokumentarlnnen und Informationsspezialistinnen anderer Fachbereiche den Aufsatz mit Gewinn lesen - und erfahren, dass unser Fachwissen aus der Sacherschließung und der Verwendung und Mitgestaltung von Normdateien und Thesauri bei der Entwicklung von Ontologien gefragt ist! (Eveline Pipp, Universitätsbibliothek Innsbruck). - Die elektronische Version dieses Artikels ist verfügbar unter: http://www.egms.de/en/journals/mbi/2006-6/mbi000049.shtml.
    Theme
    Konzeption und Anwendung des Prinzips Thesaurus
  12. Voß, J.: ¬Das Simple Knowledge Organisation System (SKOS) als Kodierungs- und Austauschformat der DDC für Anwendungen im Semantischen Web (2007) 0.01 
    0.0061369194 = product of:
  0.030684596 = sum of:
    0.030684596 = weight(_text_:und in 243) [ClassicSimilarity], result of:
      0.030684596 = score(doc=243,freq=2.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.29385152 = fieldWeight in 243, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.09375 = fieldNorm(doc=243)
  0.2 = coord(1/5)
  13. OWL Web Ontology Language Test Cases (2004) 0.01 
    0.005106646 = product of:
  0.025533231 = sum of:
    0.025533231 = product of:
      0.051066462 = sum of:
        0.051066462 = weight(_text_:22 in 4685) [ClassicSimilarity], result of:
          0.051066462 = score(doc=4685,freq=2.0), product of:
            0.1649855 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047114085 = queryNorm
            0.30952093 = fieldWeight in 4685, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=4685)
      0.5 = coord(1/2)
  0.2 = coord(1/5)
    Date
    14. 8.2011 13:33:22
  14. Köstlbacher, A. (Übers.): OWL Web Ontology Language Überblick (2004) 0.00 
    0.0043394575 = product of:
  0.021697287 = sum of:
    0.021697287 = weight(_text_:und in 4681) [ClassicSimilarity], result of:
      0.021697287 = score(doc=4681,freq=4.0), product of:
        0.10442211 = queryWeight, product of:
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.047114085 = queryNorm
        0.20778441 = fieldWeight in 4681, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.216367 = idf(docFreq=13101, maxDocs=44218)
          0.046875 = fieldNorm(doc=4681)
  0.2 = coord(1/5)
    Abstract
    Die OWL Web Ontology Language wurde entwickelt, um es Anwendungen zu ermöglichen den Inhalt von Informationen zu verarbeiten anstatt die Informationen dem Anwender nur zu präsentieren. OWL erleichtert durch zusätzliches Vokabular in Verbindung mit formaler Semantik stärkere Interpretationsmöglichkeiten von Web Inhalten als dies XML, RDF und RDFS ermöglichen. OWL besteht aus drei Untersprachen mit steigender Ausdrucksmächtigkeit: OWL Lite, OWL DL and OWL Full. Dieses Dokument wurde für Leser erstellt, die einen ersten Eindruck von den Möglichkeiten bekommen möchten, die OWL bietet. Es stellt eine Einführung in OWL anhand der Beschreibung der Merkmale der drei Untersprachen von OWL dar. Kenntnisse von RDF Schema sind hilfreich für das Verständnis, aber nicht unbedingt erforderlich. Nach der Lektüre dieses Dokuments können sich interessierte Leser für detailliertere Beschreibungen und ausführliche Beispiele der Merkmale von OWL dem OWL Guide zuwenden. Die normative formale Definition von OWL findet sich unter OWL Semantics and Abstract Syntax.
  15. Zhang, L.; Liu, Q.L.; Zhang, J.; Wang, H.F.; Pan, Y.; Yu, Y.: Semplore: an IR approach to scalable hybrid query of Semantic Web data (2007) 0.00 
    0.0042441967 = product of:
  0.021220984 = sum of:
    0.021220984 = weight(_text_:information in 231) [ClassicSimilarity], result of:
      0.021220984 = score(doc=231,freq=14.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.256578 = fieldWeight in 231, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0390625 = fieldNorm(doc=231)
  0.2 = coord(1/5)
    Abstract
    As an extension to the current Web, Semantic Web will not only contain structured data with machine understandable semantics but also textual information. While structured queries can be used to find information more precisely on the Semantic Web, keyword searches are still needed to help exploit textual information. It thus becomes very important that we can combine precise structured queries with imprecise keyword searches to have a hybrid query capability. In addition, due to the huge volume of information on the Semantic Web, the hybrid query must be processed in a very scalable way. In this paper, we define such a hybrid query capability that combines unary tree-shaped structured queries with keyword searches. We show how existing information retrieval (IR) index structures and functions can be reused to index semantic web data and its textual information, and how the hybrid query is evaluated on the index structure using IR engines in an efficient and scalable manner. We implemented this IR approach in an engine called Semplore. Comprehensive experiments on its performance show that it is a promising approach. It leads us to believe that it may be possible to evolve current web search engines to query and search the Semantic Web. Finally, we briefy describe how Semplore is used for searching Wikipedia and an IBM customer's product information.
  16. Shah, U.; Finin, T.; Joshi, A.; Cost, R.S.; Mayfield, J.: Information retrieval on the Semantic Web (2002) 0.00 
    0.003889871 = product of:
  0.019449355 = sum of:
    0.019449355 = weight(_text_:information in 696) [ClassicSimilarity], result of:
      0.019449355 = score(doc=696,freq=6.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.23515764 = fieldWeight in 696, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=696)
  0.2 = coord(1/5)
    Abstract
    We describe an apporach to retrieval of documents that consist of both free text and semantically enriched markup. In particular, we present the design and implementation prototype of a framework in which both documents and queries can be marked up with statements in the DAML+OIL semantic web language. These statement provide both structured and semi-structured information about the documents and their content. We claim that indexing text and semantic markup will significantly improve retrieval performance. Outr approach allows inferencing to be done over this information at several points: when a document is indexed,when a query is processed and when query results are evaluated.
  17. Auer, S.; Bizer, C.; Kobilarov, G.; Lehmann, J.; Cyganiak, R.; Ives, Z.: DBpedia: a nucleus for a Web of open data (2007) 0.00 
    0.003334175 = product of:
  0.016670875 = sum of:
    0.016670875 = weight(_text_:information in 4260) [ClassicSimilarity], result of:
      0.016670875 = score(doc=4260,freq=6.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.20156369 = fieldWeight in 4260, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4260)
  0.2 = coord(1/5)
    Abstract
    DBpedia is a community effort to extract structured information from Wikipedia and to make this information available on the Web. DBpedia allows you to ask sophisticated queries against datasets derived from Wikipedia and to link other datasets on the Web to Wikipedia data. We describe the extraction of the DBpedia datasets, and how the resulting information is published on the Web for human- and machineconsumption. We describe some emerging applications from the DBpedia community and show how website authors can facilitate DBpedia content within their sites. Finally, we present the current status of interlinking DBpedia with other open datasets on the Web and outline how DBpedia could serve as a nucleus for an emerging Web of open data.
  18. Davies, J.; Weeks, R.; Krohn, U.: QuizRDF: search technology for the Semantic Web (2004) 0.00 
    0.003334175 = product of:
  0.016670875 = sum of:
    0.016670875 = weight(_text_:information in 4316) [ClassicSimilarity], result of:
      0.016670875 = score(doc=4316,freq=6.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.20156369 = fieldWeight in 4316, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=4316)
  0.2 = coord(1/5)
    Abstract
    An information-seeking system is described which combines traditional keyword querying of WWW resources with the ability to browse and query against RDF annotations of those resources. RDF(S) and RDF are used to specify and populate an ontology and the resultant RDF annotations are then indexed along with the full text of the annotated resources. The resultant index allows both keyword querying against the full text of the document and the literal values occurring in the RDF annotations, along with the ability to browse and query the ontology. We motivate our approach as a key enabler for fully exploiting the Semantic Web in the area of knowledge management and argue that the ability to combine searching and browsing behaviours more fully supports a typical information-seeking task. The approach is characterised as "low threshold, high ceiling" in the sense that where RDF annotations exist they are exploited for an improved information-seeking experience but where they do not yet exist, a search capability is still available.
  19. Sánchez, M.F.: Semantically enhanced Information Retrieval : an ontology-based approach (2006) 0.00 
    0.0032083113 = product of:
  0.016041556 = sum of:
    0.016041556 = weight(_text_:information in 4327) [ClassicSimilarity], result of:
      0.016041556 = score(doc=4327,freq=2.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.19395474 = fieldWeight in 4327, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.078125 = fieldNorm(doc=4327)
  0.2 = coord(1/5)
  20. RDF/XML Syntax Specification (Revised) : W3C Recommendation 10 February 2004 (2004) 0.00 
    0.0031760663 = product of:
  0.015880331 = sum of:
    0.015880331 = weight(_text_:information in 3066) [ClassicSimilarity], result of:
      0.015880331 = score(doc=3066,freq=4.0), product of:
        0.08270773 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.047114085 = queryNorm
        0.1920054 = fieldWeight in 3066, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3066)
  0.2 = coord(1/5)
    Abstract
    The Resource Description Framework (RDF) is a general-purpose language for representing information in the Web. This document defines an XML syntax for RDF called RDF/XML in terms of Namespaces in XML, the XML Information Set and XML Base. The formal grammar for the syntax is annotated with actions generating triples of the RDF graph as defined in RDF Concepts and Abstract Syntax. The triples are written using the N-Triples RDF graph serializing format which enables more precise recording of the mapping in a machine processable form. The mappings are recorded as tests cases, gathered and published in RDF Test Cases.

Authors

Languages

  • e 30
  • d 7

Types

Themes