Search (11 results, page 1 of 1)

  • × theme_ss:"Retrievalalgorithmen"
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.02
    0.015303934 = product of:
      0.061215736 = sum of:
        0.061215736 = sum of:
          0.029439485 = weight(_text_:management in 5697) [ClassicSimilarity], result of:
            0.029439485 = score(doc=5697,freq=2.0), product of:
              0.15810528 = queryWeight, product of:
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.046906993 = queryNorm
              0.18620178 = fieldWeight in 5697, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3706124 = idf(docFreq=4130, maxDocs=44218)
                0.0390625 = fieldNorm(doc=5697)
          0.03177625 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
            0.03177625 = score(doc=5697,freq=2.0), product of:
              0.1642603 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046906993 = queryNorm
              0.19345059 = fieldWeight in 5697, 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=5697)
      0.25 = coord(1/4)
    
    Date
    22. 2.1996 13:14:10
    Source
    Information processing and management. 31(1995) no.4, S.605-620
  2. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.01
    0.0111216875 = product of:
      0.04448675 = sum of:
        0.04448675 = product of:
          0.0889735 = sum of:
            0.0889735 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.0889735 = score(doc=2134,freq=2.0), product of:
                0.1642603 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046906993 = 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)
      0.25 = coord(1/4)
    
    Date
    30. 3.2001 13:32:22
  3. Srinivasan, P.: Query expansion and MEDLINE (1996) 0.01
    0.005887897 = product of:
      0.023551589 = sum of:
        0.023551589 = product of:
          0.047103178 = sum of:
            0.047103178 = weight(_text_:management in 8453) [ClassicSimilarity], result of:
              0.047103178 = score(doc=8453,freq=2.0), product of:
                0.15810528 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.046906993 = queryNorm
                0.29792285 = fieldWeight in 8453, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0625 = fieldNorm(doc=8453)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Information processing and management. 32(1996) no.4, S.431-443
  4. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.01
    0.0055608437 = product of:
      0.022243375 = sum of:
        0.022243375 = product of:
          0.04448675 = sum of:
            0.04448675 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
              0.04448675 = score(doc=1319,freq=2.0), product of:
                0.1642603 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046906993 = 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)
      0.25 = coord(1/4)
    
    Date
    1. 8.1996 22:08:06
  5. Bhogal, J.; Macfarlane, A.; Smith, P.: ¬A review of ontology based query expansion (2007) 0.01
    0.00515191 = product of:
      0.02060764 = sum of:
        0.02060764 = product of:
          0.04121528 = sum of:
            0.04121528 = weight(_text_:management in 919) [ClassicSimilarity], result of:
              0.04121528 = score(doc=919,freq=2.0), product of:
                0.15810528 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.046906993 = queryNorm
                0.2606825 = fieldWeight in 919, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=919)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Information processing and management. 43(2007) no.4, S.866-886
  6. Klas, C.-P.; Fuhr, N.; Schaefer, A.: Evaluating strategic support for information access in the DAFFODIL system (2004) 0.00
    0.004766437 = product of:
      0.019065749 = sum of:
        0.019065749 = product of:
          0.038131498 = sum of:
            0.038131498 = weight(_text_:22 in 2419) [ClassicSimilarity], result of:
              0.038131498 = score(doc=2419,freq=2.0), product of:
                0.1642603 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046906993 = 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)
      0.25 = coord(1/4)
    
    Date
    16.11.2008 16:22:48
  7. Jindal, V.; Bawa, S.; Batra, S.: ¬A review of ranking approaches for semantic search on Web (2014) 0.00
    0.004415923 = product of:
      0.017663691 = sum of:
        0.017663691 = product of:
          0.035327382 = sum of:
            0.035327382 = weight(_text_:management in 2799) [ClassicSimilarity], result of:
              0.035327382 = score(doc=2799,freq=2.0), product of:
                0.15810528 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.046906993 = queryNorm
                0.22344214 = fieldWeight in 2799, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2799)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Information processing and management. 50(2014) no.2, S.416-425
  8. Song, D.; Bruza, P.D.: Towards context sensitive information inference (2003) 0.00
    0.003972031 = product of:
      0.015888125 = sum of:
        0.015888125 = product of:
          0.03177625 = sum of:
            0.03177625 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
              0.03177625 = score(doc=1428,freq=2.0), product of:
                0.1642603 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046906993 = queryNorm
                0.19345059 = fieldWeight in 1428, 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=1428)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    22. 3.2003 19:35:46
  9. Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006) 0.00
    0.003972031 = product of:
      0.015888125 = sum of:
        0.015888125 = product of:
          0.03177625 = sum of:
            0.03177625 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
              0.03177625 = score(doc=56,freq=2.0), product of:
                0.1642603 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046906993 = queryNorm
                0.19345059 = fieldWeight in 56, 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=56)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    22. 7.2006 16:32:43
  10. Quiroga, L.M.; Mostafa, J.: ¬An experiment in building profiles in information filtering : the role of context of user relevance feedback (2002) 0.00
    0.0036799356 = product of:
      0.014719742 = sum of:
        0.014719742 = product of:
          0.029439485 = sum of:
            0.029439485 = weight(_text_:management in 2579) [ClassicSimilarity], result of:
              0.029439485 = score(doc=2579,freq=2.0), product of:
                0.15810528 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.046906993 = queryNorm
                0.18620178 = fieldWeight in 2579, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2579)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Information processing and management. 38(2002) no.5, S.671-694
  11. Liu, X.; Zheng, W.; Fang, H.: ¬An exploration of ranking models and feedback method for related entity finding (2013) 0.00
    0.0036799356 = product of:
      0.014719742 = sum of:
        0.014719742 = product of:
          0.029439485 = sum of:
            0.029439485 = weight(_text_:management in 2714) [ClassicSimilarity], result of:
              0.029439485 = score(doc=2714,freq=2.0), product of:
                0.15810528 = queryWeight, product of:
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.046906993 = queryNorm
                0.18620178 = fieldWeight in 2714, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.3706124 = idf(docFreq=4130, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2714)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Information processing and management. 49(2013) no.5, S.995-1007