Search (1 results, page 1 of 1)

  • × author_ss:"Ahlgren, P."
  • × theme_ss:"Retrievalstudien"
  1. Ahlgren, P.; Grönqvist, L.: Evaluation of retrieval effectiveness with incomplete relevance data : theoretical and experimental comparison of three measures (2008) 0.00 
    9.3880936E-4 = product of:
  0.013612736 = sum of:
    0.008654194 = product of:
      0.025962582 = sum of:
        0.025962582 = weight(_text_:l in 2032) [ClassicSimilarity], result of:
          0.025962582 = score(doc=2032,freq=2.0), product of:
            0.08445894 = queryWeight, product of:
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.02124939 = queryNorm
            0.30739886 = fieldWeight in 2032, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.9746525 = idf(docFreq=2257, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2032)
      0.33333334 = coord(1/3)
    0.0049585416 = product of:
      0.009917083 = sum of:
        0.009917083 = weight(_text_:1 in 2032) [ClassicSimilarity], result of:
          0.009917083 = score(doc=2032,freq=2.0), product of:
            0.05219918 = queryWeight, product of:
              2.4565027 = idf(docFreq=10304, maxDocs=44218)
              0.02124939 = queryNorm
            0.18998542 = fieldWeight in 2032, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4565027 = idf(docFreq=10304, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2032)
      0.5 = coord(1/2)
  0.06896552 = coord(2/29)
    Source
    Information processing and management. 44(2008) no.1, S.212-225