Search (15 results, page 1 of 1)

  • × theme_ss:"Wissensrepräsentation"
  • × type_ss:"el"
  1. Jacobs, I.: From chaos, order: W3C standard helps organize knowledge : SKOS Connects Diverse Knowledge Organization Systems to Linked Data (2009) 0.03
    0.030810915 = product of:
      0.06162183 = sum of:
        0.06162183 = product of:
          0.12324366 = sum of:
            0.12324366 = weight(_text_:headings in 3062) [ClassicSimilarity], result of:
              0.12324366 = score(doc=3062,freq=14.0), product of:
                0.24837378 = queryWeight, product of:
                  4.849944 = idf(docFreq=940, maxDocs=44218)
                  0.051211677 = queryNorm
                0.49620238 = fieldWeight in 3062, product of:
                  3.7416575 = tf(freq=14.0), with freq of:
                    14.0 = termFreq=14.0
                  4.849944 = idf(docFreq=940, maxDocs=44218)
                  0.02734375 = fieldNorm(doc=3062)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    18 August 2009 -- Today W3C announces a new standard that builds a bridge between the world of knowledge organization systems - including thesauri, classifications, subject headings, taxonomies, and folksonomies - and the linked data community, bringing benefits to both. Libraries, museums, newspapers, government portals, enterprises, social networking applications, and other communities that manage large collections of books, historical artifacts, news reports, business glossaries, blog entries, and other items can now use Simple Knowledge Organization System (SKOS) to leverage the power of linked data. As different communities with expertise and established vocabularies use SKOS to integrate them into the Semantic Web, they increase the value of the information for everyone.
    Content
    SKOS Adapts to the Diversity of Knowledge Organization Systems A useful starting point for understanding the role of SKOS is the set of subject headings published by the US Library of Congress (LOC) for categorizing books, videos, and other library resources. These headings can be used to broaden or narrow queries for discovering resources. For instance, one can narrow a query about books on "Chinese literature" to "Chinese drama," or further still to "Chinese children's plays." Library of Congress subject headings have evolved within a community of practice over a period of decades. By now publishing these subject headings in SKOS, the Library of Congress has made them available to the linked data community, which benefits from a time-tested set of concepts to re-use in their own data. This re-use adds value ("the network effect") to the collection. When people all over the Web re-use the same LOC concept for "Chinese drama," or a concept from some other vocabulary linked to it, this creates many new routes to the discovery of information, and increases the chances that relevant items will be found. As an example of mapping one vocabulary to another, a combined effort from the STITCH, TELplus and MACS Projects provides links between LOC concepts and RAMEAU, a collection of French subject headings used by the Bibliothèque Nationale de France and other institutions. SKOS can be used for subject headings but also many other approaches to organizing knowledge. Because different communities are comfortable with different organization schemes, SKOS is designed to port diverse knowledge organization systems to the Web. "Active participation from the library and information science community in the development of SKOS over the past seven years has been key to ensuring that SKOS meets a variety of needs," said Thomas Baker, co-chair of the Semantic Web Deployment Working Group, which published SKOS. "One goal in creating SKOS was to provide new uses for well-established knowledge organization systems by providing a bridge to the linked data cloud." SKOS is part of the Semantic Web technology stack. Like the Web Ontology Language (OWL), SKOS can be used to define vocabularies. But the two technologies were designed to meet different needs. SKOS is a simple language with just a few features, tuned for sharing and linking knowledge organization systems such as thesauri and classification schemes. OWL offers a general and powerful framework for knowledge representation, where additional "rigor" can afford additional benefits (for instance, business rule processing). To get started with SKOS, see the SKOS Primer.
  2. Drewer, P.; Massion, F; Pulitano, D: Was haben Wissensmodellierung, Wissensstrukturierung, künstliche Intelligenz und Terminologie miteinander zu tun? (2017) 0.02
    0.017346188 = product of:
      0.034692377 = sum of:
        0.034692377 = product of:
          0.06938475 = sum of:
            0.06938475 = weight(_text_:22 in 5576) [ClassicSimilarity], result of:
              0.06938475 = score(doc=5576,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.38690117 = fieldWeight in 5576, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=5576)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    13.12.2017 14:17:22
  3. Tudhope, D.; Hodge, G.: Terminology registries (2007) 0.02
    0.017346188 = product of:
      0.034692377 = sum of:
        0.034692377 = product of:
          0.06938475 = sum of:
            0.06938475 = weight(_text_:22 in 539) [ClassicSimilarity], result of:
              0.06938475 = score(doc=539,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.38690117 = fieldWeight in 539, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=539)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    26.12.2011 13:22:07
  4. OWL Web Ontology Language Test Cases (2004) 0.01
    0.01387695 = product of:
      0.0277539 = sum of:
        0.0277539 = product of:
          0.0555078 = sum of:
            0.0555078 = weight(_text_:22 in 4685) [ClassicSimilarity], result of:
              0.0555078 = score(doc=4685,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = 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)
      0.5 = coord(1/2)
    
    Date
    14. 8.2011 13:33:22
  5. Hauff-Hartig, S.: Wissensrepräsentation durch RDF: Drei angewandte Forschungsbeispiele : Bitte recht vielfältig: Wie Wissensgraphen, Disco und FaBiO Struktur in Mangas und die Humanities bringen (2021) 0.01
    0.01387695 = product of:
      0.0277539 = sum of:
        0.0277539 = product of:
          0.0555078 = sum of:
            0.0555078 = weight(_text_:22 in 318) [ClassicSimilarity], result of:
              0.0555078 = score(doc=318,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.30952093 = fieldWeight in 318, 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=318)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 5.2021 12:43:05
  6. Sy, M.-F.; Ranwez, S.; Montmain, J.; Ragnault, A.; Crampes, M.; Ranwez, V.: User centered and ontology based information retrieval system for life sciences (2012) 0.01
    0.013309063 = product of:
      0.026618127 = sum of:
        0.026618127 = product of:
          0.053236254 = sum of:
            0.053236254 = weight(_text_:headings in 699) [ClassicSimilarity], result of:
              0.053236254 = score(doc=699,freq=2.0), product of:
                0.24837378 = queryWeight, product of:
                  4.849944 = idf(docFreq=940, maxDocs=44218)
                  0.051211677 = queryNorm
                0.21433927 = fieldWeight in 699, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.849944 = idf(docFreq=940, maxDocs=44218)
                  0.03125 = fieldNorm(doc=699)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Background: Because of the increasing number of electronic resources, designing efficient tools to retrieve and exploit them is a major challenge. Some improvements have been offered by semantic Web technologies and applications based on domain ontologies. In life science, for instance, the Gene Ontology is widely exploited in genomic applications and the Medical Subject Headings is the basis of biomedical publications indexation and information retrieval process proposed by PubMed. However current search engines suffer from two main drawbacks: there is limited user interaction with the list of retrieved resources and no explanation for their adequacy to the query is provided. Users may thus be confused by the selection and have no idea on how to adapt their queries so that the results match their expectations. Results: This paper describes an information retrieval system that relies on domain ontology to widen the set of relevant documents that is retrieved and that uses a graphical rendering of query results to favor user interactions. Semantic proximities between ontology concepts and aggregating models are used to assess documents adequacy with respect to a query. The selection of documents is displayed in a semantic map to provide graphical indications that make explicit to what extent they match the user's query; this man/machine interface favors a more interactive and iterative exploration of data corpus, by facilitating query concepts weighting and visual explanation. We illustrate the benefit of using this information retrieval system on two case studies one of which aiming at collecting human genes related to transcription factors involved in hemopoiesis pathway. Conclusions: The ontology based information retrieval system described in this paper (OBIRS) is freely available at: http://www.ontotoolkit.mines-ales.fr/ObirsClient/. This environment is a first step towards a user centred application in which the system enlightens relevant information to provide decision help.
  7. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie : Ontologie-basiertes Information-Filtering und -Retrieval mit relationalen Datenbanken (2005) 0.01
    0.012142331 = product of:
      0.024284663 = sum of:
        0.024284663 = product of:
          0.048569325 = sum of:
            0.048569325 = weight(_text_:22 in 4324) [ClassicSimilarity], result of:
              0.048569325 = score(doc=4324,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.2708308 = fieldWeight in 4324, 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=4324)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    11. 2.2011 18:22:25
  8. Mayfield, J.; Finin, T.: Information retrieval on the Semantic Web : integrating inference and retrieval 0.01
    0.012142331 = product of:
      0.024284663 = sum of:
        0.024284663 = product of:
          0.048569325 = sum of:
            0.048569325 = weight(_text_:22 in 4330) [ClassicSimilarity], result of:
              0.048569325 = score(doc=4330,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.2708308 = fieldWeight in 4330, 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=4330)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    12. 2.2011 17:35:22
  9. Priss, U.: Faceted knowledge representation (1999) 0.01
    0.012142331 = product of:
      0.024284663 = sum of:
        0.024284663 = product of:
          0.048569325 = sum of:
            0.048569325 = weight(_text_:22 in 2654) [ClassicSimilarity], result of:
              0.048569325 = score(doc=2654,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.2708308 = fieldWeight in 2654, 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=2654)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 1.2016 17:30:31
  10. Definition of the CIDOC Conceptual Reference Model (2003) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 1652) [ClassicSimilarity], result of:
              0.04163085 = score(doc=1652,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 1652, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1652)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    6. 8.2010 14:22:28
  11. Hollink, L.; Assem, M. van: Estimating the relevance of search results in the Culture-Web : a study of semantic distance measures (2010) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 4649) [ClassicSimilarity], result of:
              0.04163085 = score(doc=4649,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 4649, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4649)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    26.12.2011 13:40:22
  12. Bittner, T.; Donnelly, M.; Winter, S.: Ontology and semantic interoperability (2006) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 4820) [ClassicSimilarity], result of:
              0.04163085 = score(doc=4820,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 4820, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4820)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    3.12.2016 18:39:22
  13. Priss, U.: Description logic and faceted knowledge representation (1999) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 2655) [ClassicSimilarity], result of:
              0.04163085 = score(doc=2655,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 2655, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2655)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 1.2016 17:30:31
  14. Beppler, F.D.; Fonseca, F.T.; Pacheco, R.C.S.: Hermeneus: an architecture for an ontology-enabled information retrieval (2008) 0.01
    0.010407712 = product of:
      0.020815425 = sum of:
        0.020815425 = product of:
          0.04163085 = sum of:
            0.04163085 = weight(_text_:22 in 3261) [ClassicSimilarity], result of:
              0.04163085 = score(doc=3261,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.23214069 = fieldWeight in 3261, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3261)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    28.11.2016 12:43:22
  15. Monireh, E.; Sarker, M.K.; Bianchi, F.; Hitzler, P.; Doran, D.; Xie, N.: Reasoning over RDF knowledge bases using deep learning (2018) 0.01
    0.008673094 = product of:
      0.017346188 = sum of:
        0.017346188 = product of:
          0.034692377 = sum of:
            0.034692377 = weight(_text_:22 in 4553) [ClassicSimilarity], result of:
              0.034692377 = score(doc=4553,freq=2.0), product of:
                0.17933457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051211677 = queryNorm
                0.19345059 = fieldWeight in 4553, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4553)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    16.11.2018 14:22:01