Search (28 results, page 1 of 2)

  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Quiroga, L.M.; Mostafa, J.: ¬An experiment in building profiles in information filtering : the role of context of user relevance feedback (2002) 0.04
    0.04445445 = product of:
      0.0889089 = sum of:
        0.0889089 = product of:
          0.1778178 = sum of:
            0.1778178 = weight(_text_:6000 in 2579) [ClassicSimilarity], result of:
              0.1778178 = score(doc=2579,freq=2.0), product of:
                0.39536086 = queryWeight, product of:
                  8.14154 = idf(docFreq=34, maxDocs=44218)
                  0.048560943 = queryNorm
                0.4497608 = fieldWeight in 2579, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  8.14154 = idf(docFreq=34, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2579)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    An experiment was conducted to see how relevance feedback could be used to build and adjust profiles to improve the performance of filtering systems. Data was collected during the system interaction of 18 graduate students with SIFTER (Smart Information Filtering Technology for Electronic Resources), a filtering system that ranks incoming information based on users' profiles. The data set came from a collection of 6000 records concerning consumer health. In the first phase of the study, three different modes of profile acquisition were compared. The explicit mode allowed users to directly specify the profile; the implicit mode utilized relevance feedback to create and refine the profile; and the combined mode allowed users to initialize the profile and to continuously refine it using relevance feedback. Filtering performance, measured in terms of Normalized Precision, showed that the three approaches were significantly different ( [small alpha, Greek] =0.05 and p =0.012). The explicit mode of profile acquisition consistently produced superior results. Exclusive reliance on relevance feedback in the implicit mode resulted in inferior performance. The low performance obtained by the implicit acquisition mode motivated the second phase of the study, which aimed to clarify the role of context in relevance feedback judgments. An inductive content analysis of thinking aloud protocols showed dimensions that were highly situational, establishing the importance context plays in feedback relevance assessments. Results suggest the need for better representation of documents, profiles, and relevance feedback mechanisms that incorporate dimensions identified in this research.
  2. Boyack, K.W.; Wylie,B.N.; Davidson, G.S.: Information Visualization, Human-Computer Interaction, and Cognitive Psychology : Domain Visualizations (2002) 0.02
    0.02326147 = product of:
      0.04652294 = sum of:
        0.04652294 = product of:
          0.09304588 = sum of:
            0.09304588 = weight(_text_:22 in 1352) [ClassicSimilarity], result of:
              0.09304588 = score(doc=1352,freq=4.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.54716086 = fieldWeight in 1352, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1352)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 2.2003 17:25:39
    22. 2.2003 18:17:40
  3. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.02
    0.02302768 = product of:
      0.04605536 = sum of:
        0.04605536 = product of:
          0.09211072 = sum of:
            0.09211072 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.09211072 = score(doc=2134,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.5416616 = fieldWeight in 2134, 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=2134)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    30. 3.2001 13:32:22
  4. Rekabsaz, N. et al.: Toward optimized multimodal concept indexing (2016) 0.02
    0.016448345 = product of:
      0.03289669 = sum of:
        0.03289669 = product of:
          0.06579338 = sum of:
            0.06579338 = weight(_text_:22 in 2751) [ClassicSimilarity], result of:
              0.06579338 = score(doc=2751,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.38690117 = fieldWeight in 2751, 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=2751)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    1. 2.2016 18:25:22
  5. Kozikowski, P. et al.: Support of part-whole relations in query answering (2016) 0.02
    0.016448345 = product of:
      0.03289669 = sum of:
        0.03289669 = product of:
          0.06579338 = sum of:
            0.06579338 = weight(_text_:22 in 2754) [ClassicSimilarity], result of:
              0.06579338 = score(doc=2754,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.38690117 = fieldWeight in 2754, 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=2754)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    1. 2.2016 18:25:22
  6. Marx, E. et al.: Exploring term networks for semantic search over RDF knowledge graphs (2016) 0.02
    0.016448345 = product of:
      0.03289669 = sum of:
        0.03289669 = product of:
          0.06579338 = sum of:
            0.06579338 = weight(_text_:22 in 3279) [ClassicSimilarity], result of:
              0.06579338 = score(doc=3279,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.38690117 = fieldWeight in 3279, 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=3279)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Metadata and semantics research: 10th International Conference, MTSR 2016, Göttingen, Germany, November 22-25, 2016, Proceedings. Eds.: E. Garoufallou
  7. Kopácsi, S. et al.: Development of a classification server to support metadata harmonization in a long term preservation system (2016) 0.02
    0.016448345 = product of:
      0.03289669 = sum of:
        0.03289669 = product of:
          0.06579338 = sum of:
            0.06579338 = weight(_text_:22 in 3280) [ClassicSimilarity], result of:
              0.06579338 = score(doc=3280,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.38690117 = fieldWeight in 3280, 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=3280)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Metadata and semantics research: 10th International Conference, MTSR 2016, Göttingen, Germany, November 22-25, 2016, Proceedings. Eds.: E. Garoufallou
  8. Sacco, G.M.: Dynamic taxonomies and guided searches (2006) 0.02
    0.01628303 = product of:
      0.03256606 = sum of:
        0.03256606 = product of:
          0.06513212 = sum of:
            0.06513212 = weight(_text_:22 in 5295) [ClassicSimilarity], result of:
              0.06513212 = score(doc=5295,freq=4.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.38301262 = fieldWeight in 5295, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5295)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 17:56:22
  9. Efthimiadis, E.N.: End-users' understanding of thesaural knowledge structures in interactive query expansion (1994) 0.01
    0.013158675 = product of:
      0.02631735 = sum of:
        0.02631735 = product of:
          0.0526347 = sum of:
            0.0526347 = weight(_text_:22 in 5693) [ClassicSimilarity], result of:
              0.0526347 = score(doc=5693,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.30952093 = fieldWeight in 5693, 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=5693)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    30. 3.2001 13:35:22
  10. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 6958) [ClassicSimilarity], result of:
              0.04605536 = score(doc=6958,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.2708308 = fieldWeight in 6958, 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=6958)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  11. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
              0.04605536 = score(doc=1319,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.2708308 = fieldWeight in 1319, 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=1319)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    1. 8.1996 22:08:06
  12. Faaborg, A.; Lagoze, C.: Semantic browsing (2003) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 1026) [ClassicSimilarity], result of:
              0.04605536 = score(doc=1026,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.2708308 = fieldWeight in 1026, 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=1026)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Research and advanced technology for digital libraries : 7th European Conference, proceedings / ECDL 2003, Trondheim, Norway, August 17-22, 2003
  13. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie (2005) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 1852) [ClassicSimilarity], result of:
              0.04605536 = score(doc=1852,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.2708308 = fieldWeight in 1852, 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=1852)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    11. 2.2011 18:22:58
  14. Knorz, G.; Rein, B.: Semantische Suche in einer Hochschulontologie : Ontologie-basiertes Information-Filtering und -Retrieval mit relationalen Datenbanken (2005) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 4324) [ClassicSimilarity], result of:
              0.04605536 = score(doc=4324,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = 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
  15. Salaba, A.; Zeng, M.L.: Extending the "Explore" user task beyond subject authority data into the linked data sphere (2014) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 1465) [ClassicSimilarity], result of:
              0.04605536 = score(doc=1465,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.2708308 = fieldWeight in 1465, 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=1465)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik
  16. Mlodzka-Stybel, A.: Towards continuous improvement of users' access to a library catalogue (2014) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 1466) [ClassicSimilarity], result of:
              0.04605536 = score(doc=1466,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.2708308 = fieldWeight in 1466, 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=1466)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik
  17. Lund, K.; Burgess, C.; Atchley, R.A.: Semantic and associative priming in high-dimensional semantic space (1995) 0.01
    0.01151384 = product of:
      0.02302768 = sum of:
        0.02302768 = product of:
          0.04605536 = sum of:
            0.04605536 = weight(_text_:22 in 2151) [ClassicSimilarity], result of:
              0.04605536 = score(doc=2151,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.2708308 = fieldWeight in 2151, 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=2151)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Proceedings of the Seventeenth Annual Conference of the Cognitive Science Society: July 22 - 25, 1995, University of Pittsburgh / ed. by Johanna D. Moore and Jill Fain Lehmann
  18. Klas, C.-P.; Fuhr, N.; Schaefer, A.: Evaluating strategic support for information access in the DAFFODIL system (2004) 0.01
    0.009869006 = product of:
      0.019738013 = sum of:
        0.019738013 = product of:
          0.039476026 = sum of:
            0.039476026 = weight(_text_:22 in 2419) [ClassicSimilarity], result of:
              0.039476026 = score(doc=2419,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.23214069 = fieldWeight in 2419, 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=2419)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    16.11.2008 16:22:48
  19. Zeng, M.L.; Gracy, K.F.; Zumer, M.: Using a semantic analysis tool to generate subject access points : a study using Panofsky's theory and two research samples (2014) 0.01
    0.009869006 = product of:
      0.019738013 = sum of:
        0.019738013 = product of:
          0.039476026 = sum of:
            0.039476026 = weight(_text_:22 in 1464) [ClassicSimilarity], result of:
              0.039476026 = score(doc=1464,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.23214069 = fieldWeight in 1464, 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=1464)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik
  20. Järvelin, K.; Kristensen, J.; Niemi, T.; Sormunen, E.; Keskustalo, H.: ¬A deductive data model for query expansion (1996) 0.01
    0.009869006 = product of:
      0.019738013 = sum of:
        0.019738013 = product of:
          0.039476026 = sum of:
            0.039476026 = weight(_text_:22 in 2230) [ClassicSimilarity], result of:
              0.039476026 = score(doc=2230,freq=2.0), product of:
                0.17005216 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.048560943 = queryNorm
                0.23214069 = fieldWeight in 2230, 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=2230)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (ACM SIGIR '96), Zürich, Switzerland, August 18-22, 1996. Eds.: H.P. Frei et al