Search (4 results, page 1 of 1)

  • × author_ss:"Robertson, S."
  • × language_ss:"e"
  1. Robertson, S.; Tait, J.: In Memoriam Karen Sparck Jones (2007) 0.08 
    0.07509278 = product of:
  0.15018556 = sum of:
    0.15018556 = sum of:
      0.06534292 = weight(_text_:systems in 2927) [ClassicSimilarity], result of:
        0.06534292 = score(doc=2927,freq=2.0), product of:
          0.16037072 = queryWeight, product of:
            3.0731742 = idf(docFreq=5561, maxDocs=44218)
            0.052184064 = queryNorm
          0.4074492 = fieldWeight in 2927, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.0731742 = idf(docFreq=5561, maxDocs=44218)
            0.09375 = fieldNorm(doc=2927)
      0.084842645 = weight(_text_:22 in 2927) [ClassicSimilarity], result of:
        0.084842645 = score(doc=2927,freq=2.0), product of:
          0.1827397 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.052184064 = queryNorm
          0.46428138 = fieldWeight in 2927, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.09375 = fieldNorm(doc=2927)
  0.5 = coord(1/2)
    Abstract
    This note is also appearing in the Journal of the American Society for Information Systems and Technology.
    Date
    26.12.2007 14:22:47
  2. Hawking, D.; Robertson, S.: On collection size and retrieval effectiveness (2003) 0.04 
    0.03999521 = product of:
  0.07999042 = sum of:
    0.07999042 = product of:
      0.15998083 = sum of:
        0.15998083 = weight(_text_:22 in 4109) [ClassicSimilarity], result of:
          0.15998083 = score(doc=4109,freq=4.0), product of:
            0.1827397 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052184064 = queryNorm
            0.8754574 = fieldWeight in 4109, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.125 = fieldNorm(doc=4109)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    14. 8.2005 14:22:22
  3. Robertson, S.: ¬The state of information retrieval : a researcher's view 0.01 
    0.010890487 = product of:
  0.021780973 = sum of:
    0.021780973 = product of:
      0.043561947 = sum of:
        0.043561947 = weight(_text_:systems in 1944) [ClassicSimilarity], result of:
          0.043561947 = score(doc=1944,freq=2.0), product of:
            0.16037072 = queryWeight, product of:
              3.0731742 = idf(docFreq=5561, maxDocs=44218)
              0.052184064 = queryNorm
            0.2716328 = fieldWeight in 1944, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0731742 = idf(docFreq=5561, maxDocs=44218)
              0.0625 = fieldNorm(doc=1944)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    For the last ten years Stephen Robertson has been a researcher at the Microsoft Research Laboratory. He previously spent twenty years at City University, where he started the Centre for Interactive Systems Research and still retains a part-time professorship. His work on probabilistic theory underpins the algorithms behind every serious search engine today. In his talk, he gave a non-technical overview of some current concerns of core IR research, in particular on the use of different kinds of evidence in searching and ranking.
  4. Beaulieu, M.; Robertson, S.; Rasmussen, E.: Evaluating interactive systems in TREC (1996) 0.01 
    0.009529176 = product of:
  0.019058352 = sum of:
    0.019058352 = product of:
      0.038116705 = sum of:
        0.038116705 = weight(_text_:systems in 2998) [ClassicSimilarity], result of:
          0.038116705 = score(doc=2998,freq=2.0), product of:
            0.16037072 = queryWeight, product of:
              3.0731742 = idf(docFreq=5561, maxDocs=44218)
              0.052184064 = queryNorm
            0.23767869 = fieldWeight in 2998, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.0731742 = idf(docFreq=5561, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2998)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Authors

Years

Types

Themes