Search (3 results, page 1 of 1)

  • × author_ss:"Robertson, S.E."
  • × theme_ss:"Retrievalalgorithmen"
  1. Robertson, S.E.: OKAPI at TREC-1 (1994) 0.00 
    6.1549107E-4 = product of:
  0.014156294 = sum of:
    0.014156294 = product of:
      0.028312588 = sum of:
        0.028312588 = weight(_text_:1 in 7953) [ClassicSimilarity], result of:
          0.028312588 = score(doc=7953,freq=6.0), product of:
            0.06022775 = queryWeight, product of:
              2.4565027 = idf(docFreq=10304, maxDocs=44218)
              0.024517681 = queryNorm
            0.47009206 = fieldWeight in 7953, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              2.4565027 = idf(docFreq=10304, maxDocs=44218)
              0.078125 = fieldNorm(doc=7953)
      0.5 = coord(1/2)
  0.04347826 = coord(1/23)
    Abstract
    Describes the work carried out on the TREC-2 project following the results of the TREC-1 project. Experiments were conducted on the OKAPI experimental text information retrieval system which investigated a number of alternative probabilistic term weighting functions in place of the 'standard' Robertson Sparck Jones weighting functions used in TREC-1
  2. MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing for passage retrieval (2004) 0.00 
    5.777056E-4 = product of:
  0.013287229 = sum of:
    0.013287229 = product of:
      0.026574459 = sum of:
        0.026574459 = weight(_text_:22 in 5108) [ClassicSimilarity], result of:
          0.026574459 = score(doc=5108,freq=2.0), product of:
            0.08585674 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.024517681 = queryNorm
            0.30952093 = fieldWeight in 5108, 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=5108)
      0.5 = coord(1/2)
  0.04347826 = coord(1/23)
    Date
    20. 1.2007 18:30:22
  3. Bovey, J.D.; Robertson, S.E.: ¬An algorithm for weighted searching on a Boolean system (1984) 0.00 
    4.9749546E-4 = product of:
  0.011442395 = sum of:
    0.011442395 = product of:
      0.02288479 = sum of:
        0.02288479 = weight(_text_:1 in 788) [ClassicSimilarity], result of:
          0.02288479 = score(doc=788,freq=2.0), product of:
            0.06022775 = queryWeight, product of:
              2.4565027 = idf(docFreq=10304, maxDocs=44218)
              0.024517681 = queryNorm
            0.37997085 = fieldWeight in 788, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4565027 = idf(docFreq=10304, maxDocs=44218)
              0.109375 = fieldNorm(doc=788)
      0.5 = coord(1/2)
  0.04347826 = coord(1/23)
    Source
    Information technology: research and development. 3(1984) no.1, S.84-87

Authors

Years

Types