Search (9 results, page 1 of 1)

  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × theme_ss:"Retrievalalgorithmen"
  1. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.02
    0.021351416 = product of:
      0.04270283 = sum of:
        0.04270283 = product of:
          0.08540566 = sum of:
            0.08540566 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.08540566 = score(doc=2134,freq=2.0), product of:
                0.15767346 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045026023 = 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
  2. Chen, H.; Zhang, Y.; Houston, A.L.: Semantic indexing and searching using a Hopfield net (1998) 0.02
    0.017281577 = product of:
      0.034563154 = sum of:
        0.034563154 = product of:
          0.06912631 = sum of:
            0.06912631 = weight(_text_:y in 5704) [ClassicSimilarity], result of:
              0.06912631 = score(doc=5704,freq=2.0), product of:
                0.21668325 = queryWeight, product of:
                  4.8124003 = idf(docFreq=976, maxDocs=44218)
                  0.045026023 = queryNorm
                0.3190201 = fieldWeight in 5704, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.8124003 = idf(docFreq=976, maxDocs=44218)
                  0.046875 = fieldNorm(doc=5704)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  3. Nie, J.-Y.: Query expansion and query translation as logical inference (2003) 0.02
    0.017281577 = product of:
      0.034563154 = sum of:
        0.034563154 = product of:
          0.06912631 = sum of:
            0.06912631 = weight(_text_:y in 1425) [ClassicSimilarity], result of:
              0.06912631 = score(doc=1425,freq=2.0), product of:
                0.21668325 = queryWeight, product of:
                  4.8124003 = idf(docFreq=976, maxDocs=44218)
                  0.045026023 = queryNorm
                0.3190201 = fieldWeight in 1425, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.8124003 = idf(docFreq=976, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1425)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  4. Xu, B.; Lin, H.; Lin, Y.: Assessment of learning to rank methods for query expansion (2016) 0.01
    0.014401315 = product of:
      0.02880263 = sum of:
        0.02880263 = product of:
          0.05760526 = sum of:
            0.05760526 = weight(_text_:y in 2929) [ClassicSimilarity], result of:
              0.05760526 = score(doc=2929,freq=2.0), product of:
                0.21668325 = queryWeight, product of:
                  4.8124003 = idf(docFreq=976, maxDocs=44218)
                  0.045026023 = queryNorm
                0.26585007 = fieldWeight in 2929, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.8124003 = idf(docFreq=976, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2929)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  5. Chang, C.-H.; Hsu, C.-C.: Integrating query expansion and conceptual relevance feedback for personalized Web information retrieval (1998) 0.01
    0.010675708 = product of:
      0.021351416 = sum of:
        0.021351416 = product of:
          0.04270283 = sum of:
            0.04270283 = weight(_text_:22 in 1319) [ClassicSimilarity], result of:
              0.04270283 = score(doc=1319,freq=2.0), product of:
                0.15767346 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045026023 = 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
  6. Klas, C.-P.; Fuhr, N.; Schaefer, A.: Evaluating strategic support for information access in the DAFFODIL system (2004) 0.01
    0.009150607 = product of:
      0.018301213 = sum of:
        0.018301213 = product of:
          0.036602426 = sum of:
            0.036602426 = weight(_text_:22 in 2419) [ClassicSimilarity], result of:
              0.036602426 = score(doc=2419,freq=2.0), product of:
                0.15767346 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045026023 = 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
  7. Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.01
    0.007625506 = product of:
      0.015251012 = sum of:
        0.015251012 = product of:
          0.030502023 = sum of:
            0.030502023 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
              0.030502023 = score(doc=5697,freq=2.0), product of:
                0.15767346 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045026023 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 2.1996 13:14:10
  8. Song, D.; Bruza, P.D.: Towards context sensitive information inference (2003) 0.01
    0.007625506 = product of:
      0.015251012 = sum of:
        0.015251012 = product of:
          0.030502023 = sum of:
            0.030502023 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
              0.030502023 = score(doc=1428,freq=2.0), product of:
                0.15767346 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045026023 = 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)
      0.5 = coord(1/2)
    
    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) 0.01
    0.007625506 = product of:
      0.015251012 = sum of:
        0.015251012 = product of:
          0.030502023 = sum of:
            0.030502023 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
              0.030502023 = score(doc=56,freq=2.0), product of:
                0.15767346 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045026023 = 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)
      0.5 = coord(1/2)
    
    Date
    22. 7.2006 16:32:43