Document (#16637)

Author
Satoh, K.
Akamine, S.
Okumura, A.
Title
Improvements on query term expansion and ranking formula
Source
The Fourth Text Retrieval Conference (TREC-4). Ed.: K. Harman
Imprint
Gaithersburgh, MD : National Institute of Standards and Technology
Year
1996
Pages
S.475-481
Series
NIST special publication; 500-236
Object
TREC

Similar documents (content)

  1. Bando, L.L.; Scholer, F.; Turpin, A.: Query-biased summary generation assisted by query expansion : temporality (2015) 0.69
    0.68803424 = sum of:
      0.68803424 = product of:
        1.0320513 = sum of:
          0.24492642 = weight(abstract_txt:query in 1820) [ClassicSimilarity], result of:
            0.24492642 = score(doc=1820,freq=11.0), product of:
              0.24855448 = queryWeight, product of:
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.05228582 = queryNorm
              0.98540336 = fieldWeight in 1820, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=1820)
          0.2089656 = weight(abstract_txt:ranking in 1820) [ClassicSimilarity], result of:
            0.2089656 = score(doc=1820,freq=3.0), product of:
              0.34477693 = queryWeight, product of:
                1.177764 = boost
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.05228582 = queryNorm
              0.6060893 = fieldWeight in 1820, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.0625 = fieldNorm(doc=1820)
          0.41402292 = weight(abstract_txt:expansion in 1820) [ClassicSimilarity], result of:
            0.41402292 = score(doc=1820,freq=7.0), product of:
              0.41005835 = queryWeight, product of:
                1.2844347 = boost
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.05228582 = queryNorm
              1.0096684 = fieldWeight in 1820, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.0625 = fieldNorm(doc=1820)
          0.16413647 = weight(abstract_txt:improvements in 1820) [ClassicSimilarity], result of:
            0.16413647 = score(doc=1820,freq=1.0), product of:
              0.42331675 = queryWeight, product of:
                1.3050343 = boost
                6.203826 = idf(docFreq=242, maxDocs=44218)
                0.05228582 = queryNorm
              0.38773912 = fieldWeight in 1820, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.203826 = idf(docFreq=242, maxDocs=44218)
                0.0625 = fieldNorm(doc=1820)
        0.6666667 = coord(4/6)
    
  2. Vechtomova, O.; Karamuftuoglu, M.: Lexical cohesion and term proximity in document ranking (2008) 0.67
    0.6721324 = sum of:
      0.6721324 = product of:
        1.0081985 = sum of:
          0.27133524 = weight(abstract_txt:query in 2101) [ClassicSimilarity], result of:
            0.27133524 = score(doc=2101,freq=6.0), product of:
              0.24855448 = queryWeight, product of:
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.05228582 = queryNorm
              1.091653 = fieldWeight in 2101, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.09375 = fieldNorm(doc=2101)
          0.25592956 = weight(abstract_txt:ranking in 2101) [ClassicSimilarity], result of:
            0.25592956 = score(doc=2101,freq=2.0), product of:
              0.34477693 = queryWeight, product of:
                1.177764 = boost
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.05228582 = queryNorm
              0.74230474 = fieldWeight in 2101, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.09375 = fieldNorm(doc=2101)
          0.23472895 = weight(abstract_txt:expansion in 2101) [ClassicSimilarity], result of:
            0.23472895 = score(doc=2101,freq=1.0), product of:
              0.41005835 = queryWeight, product of:
                1.2844347 = boost
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.05228582 = queryNorm
              0.57242817 = fieldWeight in 2101, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.09375 = fieldNorm(doc=2101)
          0.24620469 = weight(abstract_txt:improvements in 2101) [ClassicSimilarity], result of:
            0.24620469 = score(doc=2101,freq=1.0), product of:
              0.42331675 = queryWeight, product of:
                1.3050343 = boost
                6.203826 = idf(docFreq=242, maxDocs=44218)
                0.05228582 = queryNorm
              0.58160865 = fieldWeight in 2101, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.203826 = idf(docFreq=242, maxDocs=44218)
                0.09375 = fieldNorm(doc=2101)
        0.6666667 = coord(4/6)
    
  3. Efthimiadis, E.N.: Query expansion (1996) 0.64
    0.64028203 = sum of:
      0.64028203 = product of:
        1.2805641 = sum of:
          0.36178032 = weight(abstract_txt:query in 4847) [ClassicSimilarity], result of:
            0.36178032 = score(doc=4847,freq=6.0), product of:
              0.24855448 = queryWeight, product of:
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.05228582 = queryNorm
              1.4555373 = fieldWeight in 4847, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.125 = fieldNorm(doc=4847)
          0.15216225 = weight(abstract_txt:term in 4847) [ClassicSimilarity], result of:
            0.15216225 = score(doc=4847,freq=1.0), product of:
              0.25354013 = queryWeight, product of:
                1.0099795 = boost
                4.8012047 = idf(docFreq=987, maxDocs=44218)
                0.05228582 = queryNorm
              0.6001506 = fieldWeight in 4847, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8012047 = idf(docFreq=987, maxDocs=44218)
                0.125 = fieldNorm(doc=4847)
          0.76662153 = weight(abstract_txt:expansion in 4847) [ClassicSimilarity], result of:
            0.76662153 = score(doc=4847,freq=6.0), product of:
              0.41005835 = queryWeight, product of:
                1.2844347 = boost
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.05228582 = queryNorm
              1.8695426 = fieldWeight in 4847, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.125 = fieldNorm(doc=4847)
        0.5 = coord(3/6)
    
  4. Smith, M.P.; Pollitt, S.A.: ¬A comparison of ranking formulae and their ranks (1995) 0.55
    0.5507785 = sum of:
      0.5507785 = product of:
        0.8261677 = sum of:
          0.13054623 = weight(abstract_txt:query in 5802) [ClassicSimilarity], result of:
            0.13054623 = score(doc=5802,freq=2.0), product of:
              0.24855448 = queryWeight, product of:
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.05228582 = queryNorm
              0.52522177 = fieldWeight in 5802, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.078125 = fieldNorm(doc=5802)
          0.16472048 = weight(abstract_txt:term in 5802) [ClassicSimilarity], result of:
            0.16472048 = score(doc=5802,freq=3.0), product of:
              0.25354013 = queryWeight, product of:
                1.0099795 = boost
                4.8012047 = idf(docFreq=987, maxDocs=44218)
                0.05228582 = queryNorm
              0.64968204 = fieldWeight in 5802, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.8012047 = idf(docFreq=987, maxDocs=44218)
                0.078125 = fieldNorm(doc=5802)
          0.15080793 = weight(abstract_txt:ranking in 5802) [ClassicSimilarity], result of:
            0.15080793 = score(doc=5802,freq=1.0), product of:
              0.34477693 = queryWeight, product of:
                1.177764 = boost
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.05228582 = queryNorm
              0.43740726 = fieldWeight in 5802, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.078125 = fieldNorm(doc=5802)
          0.38009313 = weight(abstract_txt:formula in 5802) [ClassicSimilarity], result of:
            0.38009313 = score(doc=5802,freq=1.0), product of:
              0.63853115 = queryWeight, product of:
                1.6028033 = boost
                7.61935 = idf(docFreq=58, maxDocs=44218)
                0.05228582 = queryNorm
              0.5952617 = fieldWeight in 5802, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.61935 = idf(docFreq=58, maxDocs=44218)
                0.078125 = fieldNorm(doc=5802)
        0.6666667 = coord(4/6)
    
  5. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.49
    0.49188015 = sum of:
      0.49188015 = product of:
        0.7378202 = sum of:
          0.11077214 = weight(abstract_txt:query in 5694) [ClassicSimilarity], result of:
            0.11077214 = score(doc=5694,freq=1.0), product of:
              0.24855448 = queryWeight, product of:
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.05228582 = queryNorm
              0.44566542 = fieldWeight in 5694, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.09375 = fieldNorm(doc=5694)
          0.11412169 = weight(abstract_txt:term in 5694) [ClassicSimilarity], result of:
            0.11412169 = score(doc=5694,freq=1.0), product of:
              0.25354013 = queryWeight, product of:
                1.0099795 = boost
                4.8012047 = idf(docFreq=987, maxDocs=44218)
                0.05228582 = queryNorm
              0.45011294 = fieldWeight in 5694, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8012047 = idf(docFreq=987, maxDocs=44218)
                0.09375 = fieldNorm(doc=5694)
          0.18096954 = weight(abstract_txt:ranking in 5694) [ClassicSimilarity], result of:
            0.18096954 = score(doc=5694,freq=1.0), product of:
              0.34477693 = queryWeight, product of:
                1.177764 = boost
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.05228582 = queryNorm
              0.52488875 = fieldWeight in 5694, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.09375 = fieldNorm(doc=5694)
          0.33195683 = weight(abstract_txt:expansion in 5694) [ClassicSimilarity], result of:
            0.33195683 = score(doc=5694,freq=2.0), product of:
              0.41005835 = queryWeight, product of:
                1.2844347 = boost
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.05228582 = queryNorm
              0.8095356 = fieldWeight in 5694, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.1059003 = idf(docFreq=267, maxDocs=44218)
                0.09375 = fieldNorm(doc=5694)
        0.6666667 = coord(4/6)