Document (#1346)

Author
Blair, D.C.
Maron, M.E.
Title
¬An evaluation of retrieval effectiveness for a full-text document-retrieval system
Source
Communications of the Association for Computing Machinery. 28(1985), S.280-299
Year
1985
Footnote
Vgl. auch : Salton, G.: Another look ... Comm. ACM 29(1986) S.S.648-656; Blair, D.C.: Full text retrieval ... Int. Class. 13(1986) S.18-23: Blair, D.C., M.E. Maron: Full-text information retrieval ... Inf. proc. man. 26(1990) S.437-447.
Theme
Volltextretrieval
Retrievalstudien

Similar documents (author)

  1. Blair, D.C.; Maron, M.E.: Full-text information retrieval : further analysis and clarification (1990) 6.38
    6.3754053 = sum of:
      6.3754053 = sum of:
        3.1118248 = weight(author_txt:blair in 2115) [ClassicSimilarity], result of:
          3.1118248 = score(doc=2115,freq=1.0), product of:
            0.69579697 = queryWeight, product of:
              8.944634 = idf(docFreq=14, maxDocs=42306)
              0.077789314 = queryNorm
            4.472317 = fieldWeight in 2115, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.944634 = idf(docFreq=14, maxDocs=42306)
              0.5 = fieldNorm(doc=2115)
        3.2635803 = weight(author_txt:maron in 2115) [ClassicSimilarity], result of:
          3.2635803 = score(doc=2115,freq=1.0), product of:
            0.7182384 = queryWeight, product of:
              1.0159985 = boost
              9.087735 = idf(docFreq=12, maxDocs=42306)
              0.077789314 = queryNorm
            4.5438676 = fieldWeight in 2115, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.087735 = idf(docFreq=12, maxDocs=42306)
              0.5 = fieldNorm(doc=2115)
    
  2. Maron, M.E.: Depth of indexing (1979) 2.04
    2.0397377 = sum of:
      2.0397377 = product of:
        4.0794754 = sum of:
          4.0794754 = weight(author_txt:maron in 1789) [ClassicSimilarity], result of:
            4.0794754 = score(doc=1789,freq=1.0), product of:
              0.7182384 = queryWeight, product of:
                1.0159985 = boost
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.077789314 = queryNorm
              5.6798344 = fieldWeight in 1789, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.625 = fieldNorm(doc=1789)
        0.5 = coord(1/2)
    
  3. Maron, M.E.: Automatic indexing : an experimental inquiry (1961) 2.04
    2.0397377 = sum of:
      2.0397377 = product of:
        4.0794754 = sum of:
          4.0794754 = weight(author_txt:maron in 5465) [ClassicSimilarity], result of:
            4.0794754 = score(doc=5465,freq=1.0), product of:
              0.7182384 = queryWeight, product of:
                1.0159985 = boost
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.077789314 = queryNorm
              5.6798344 = fieldWeight in 5465, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.625 = fieldNorm(doc=5465)
        0.5 = coord(1/2)
    
  4. Maron, M.E.: On indexing, retrieval and the meaning of about (1977) 2.04
    2.0397377 = sum of:
      2.0397377 = product of:
        4.0794754 = sum of:
          4.0794754 = weight(author_txt:maron in 7405) [ClassicSimilarity], result of:
            4.0794754 = score(doc=7405,freq=1.0), product of:
              0.7182384 = queryWeight, product of:
                1.0159985 = boost
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.077789314 = queryNorm
              5.6798344 = fieldWeight in 7405, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.625 = fieldNorm(doc=7405)
        0.5 = coord(1/2)
    
  5. Maron, M.E.: Theory and foundation of information retrieval : some introductory remarks (1978) 2.04
    2.0397377 = sum of:
      2.0397377 = product of:
        4.0794754 = sum of:
          4.0794754 = weight(author_txt:maron in 7407) [ClassicSimilarity], result of:
            4.0794754 = score(doc=7407,freq=1.0), product of:
              0.7182384 = queryWeight, product of:
                1.0159985 = boost
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.077789314 = queryNorm
              5.6798344 = fieldWeight in 7407, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.087735 = idf(docFreq=12, maxDocs=42306)
                0.625 = fieldNorm(doc=7407)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. McDonald, D.D.: Paper versus screen : evaluating different design metaphors for electronic document delivery systems (1994) 1.18
    1.1803124 = sum of:
      1.1803124 = sum of:
        0.06536598 = weight(abstract_txt:system in 1903) [ClassicSimilarity], result of:
          0.06536598 = score(doc=1903,freq=1.0), product of:
            0.2072086 = queryWeight, product of:
              3.3649042 = idf(docFreq=3974, maxDocs=42306)
              0.061579347 = queryNorm
            0.31545976 = fieldWeight in 1903, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              3.3649042 = idf(docFreq=3974, maxDocs=42306)
              0.09375 = fieldNorm(doc=1903)
        0.11412263 = weight(abstract_txt:text in 1903) [ClassicSimilarity], result of:
          0.11412263 = score(doc=1903,freq=1.0), product of:
            0.30043772 = queryWeight, product of:
              1.2041299 = boost
              4.0517817 = idf(docFreq=1999, maxDocs=42306)
              0.061579347 = queryNorm
            0.37985453 = fieldWeight in 1903, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              4.0517817 = idf(docFreq=1999, maxDocs=42306)
              0.09375 = fieldNorm(doc=1903)
        0.26889628 = weight(abstract_txt:document in 1903) [ClassicSimilarity], result of:
          0.26889628 = score(doc=1903,freq=4.0), product of:
            0.3351273 = queryWeight, product of:
              1.2717478 = boost
              4.2793097 = idf(docFreq=1592, maxDocs=42306)
              0.061579347 = queryNorm
            0.80237055 = fieldWeight in 1903, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.2793097 = idf(docFreq=1592, maxDocs=42306)
              0.09375 = fieldNorm(doc=1903)
        0.1556527 = weight(abstract_txt:evaluation in 1903) [ClassicSimilarity], result of:
          0.1556527 = score(doc=1903,freq=1.0), product of:
            0.36949712 = queryWeight, product of:
              1.3353701 = boost
              4.4933925 = idf(docFreq=1285, maxDocs=42306)
              0.061579347 = queryNorm
            0.42125553 = fieldWeight in 1903, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              4.4933925 = idf(docFreq=1285, maxDocs=42306)
              0.09375 = fieldNorm(doc=1903)
        0.20350082 = weight(abstract_txt:full in 1903) [ClassicSimilarity], result of:
          0.20350082 = score(doc=1903,freq=1.0), product of:
            0.44179153 = queryWeight, product of:
              1.4601747 = boost
              4.9133477 = idf(docFreq=844, maxDocs=42306)
              0.061579347 = queryNorm
            0.46062636 = fieldWeight in 1903, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              4.9133477 = idf(docFreq=844, maxDocs=42306)
              0.09375 = fieldNorm(doc=1903)
        0.23032048 = weight(abstract_txt:effectiveness in 1903) [ClassicSimilarity], result of:
          0.23032048 = score(doc=1903,freq=1.0), product of:
            0.47980157 = queryWeight, product of:
              1.5216926 = boost
              5.12035 = idf(docFreq=686, maxDocs=42306)
              0.061579347 = queryNorm
            0.4800328 = fieldWeight in 1903, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              5.12035 = idf(docFreq=686, maxDocs=42306)
              0.09375 = fieldNorm(doc=1903)
        0.14245357 = weight(abstract_txt:retrieval in 1903) [ClassicSimilarity], result of:
          0.14245357 = score(doc=1903,freq=1.0), product of:
            0.43883255 = queryWeight, product of:
              2.0580719 = boost
              3.4626071 = idf(docFreq=3604, maxDocs=42306)
              0.061579347 = queryNorm
            0.3246194 = fieldWeight in 1903, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              3.4626071 = idf(docFreq=3604, maxDocs=42306)
              0.09375 = fieldNorm(doc=1903)
    
  2. Bodoff, D.; Kambil, A.: Partial coordination : II. A preliminary evaluation and failure analysis (1998) 0.96
    0.959882 = sum of:
      0.959882 = product of:
        1.1198623 = sum of:
          0.1344948 = weight(abstract_txt:text in 3324) [ClassicSimilarity], result of:
            0.1344948 = score(doc=3324,freq=2.0), product of:
              0.30043772 = queryWeight, product of:
                1.2041299 = boost
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.061579347 = queryNorm
              0.44766283 = fieldWeight in 3324, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.078125 = fieldNorm(doc=3324)
          0.15844865 = weight(abstract_txt:document in 3324) [ClassicSimilarity], result of:
            0.15844865 = score(doc=3324,freq=2.0), product of:
              0.3351273 = queryWeight, product of:
                1.2717478 = boost
                4.2793097 = idf(docFreq=1592, maxDocs=42306)
                0.061579347 = queryNorm
              0.4728014 = fieldWeight in 3324, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2793097 = idf(docFreq=1592, maxDocs=42306)
                0.078125 = fieldNorm(doc=3324)
          0.1297106 = weight(abstract_txt:evaluation in 3324) [ClassicSimilarity], result of:
            0.1297106 = score(doc=3324,freq=1.0), product of:
              0.36949712 = queryWeight, product of:
                1.3353701 = boost
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.061579347 = queryNorm
              0.3510463 = fieldWeight in 3324, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.078125 = fieldNorm(doc=3324)
          0.23982802 = weight(abstract_txt:full in 3324) [ClassicSimilarity], result of:
            0.23982802 = score(doc=3324,freq=2.0), product of:
              0.44179153 = queryWeight, product of:
                1.4601747 = boost
                4.9133477 = idf(docFreq=844, maxDocs=42306)
                0.061579347 = queryNorm
              0.54285336 = fieldWeight in 3324, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9133477 = idf(docFreq=844, maxDocs=42306)
                0.078125 = fieldNorm(doc=3324)
          0.19193374 = weight(abstract_txt:effectiveness in 3324) [ClassicSimilarity], result of:
            0.19193374 = score(doc=3324,freq=1.0), product of:
              0.47980157 = queryWeight, product of:
                1.5216926 = boost
                5.12035 = idf(docFreq=686, maxDocs=42306)
                0.061579347 = queryNorm
              0.40002733 = fieldWeight in 3324, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.12035 = idf(docFreq=686, maxDocs=42306)
                0.078125 = fieldNorm(doc=3324)
          0.26544657 = weight(abstract_txt:retrieval in 3324) [ClassicSimilarity], result of:
            0.26544657 = score(doc=3324,freq=5.0), product of:
              0.43883255 = queryWeight, product of:
                2.0580719 = boost
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.061579347 = queryNorm
              0.6048926 = fieldWeight in 3324, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.078125 = fieldNorm(doc=3324)
        0.85714287 = coord(6/7)
    
  3. Blair, D.C.: Full text retrieval : Evaluation and implications (1986) 0.95
    0.9450474 = sum of:
      0.9450474 = product of:
        1.1025553 = sum of:
          0.092441455 = weight(abstract_txt:system in 2116) [ClassicSimilarity], result of:
            0.092441455 = score(doc=2116,freq=2.0), product of:
              0.2072086 = queryWeight, product of:
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.061579347 = queryNorm
              0.44612747 = fieldWeight in 2116, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.09375 = fieldNorm(doc=2116)
          0.11412263 = weight(abstract_txt:text in 2116) [ClassicSimilarity], result of:
            0.11412263 = score(doc=2116,freq=1.0), product of:
              0.30043772 = queryWeight, product of:
                1.2041299 = boost
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.061579347 = queryNorm
              0.37985453 = fieldWeight in 2116, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.09375 = fieldNorm(doc=2116)
          0.13444814 = weight(abstract_txt:document in 2116) [ClassicSimilarity], result of:
            0.13444814 = score(doc=2116,freq=1.0), product of:
              0.3351273 = queryWeight, product of:
                1.2717478 = boost
                4.2793097 = idf(docFreq=1592, maxDocs=42306)
                0.061579347 = queryNorm
              0.40118527 = fieldWeight in 2116, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2793097 = idf(docFreq=1592, maxDocs=42306)
                0.09375 = fieldNorm(doc=2116)
          0.3113054 = weight(abstract_txt:evaluation in 2116) [ClassicSimilarity], result of:
            0.3113054 = score(doc=2116,freq=4.0), product of:
              0.36949712 = queryWeight, product of:
                1.3353701 = boost
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.061579347 = queryNorm
              0.84251106 = fieldWeight in 2116, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.09375 = fieldNorm(doc=2116)
          0.20350082 = weight(abstract_txt:full in 2116) [ClassicSimilarity], result of:
            0.20350082 = score(doc=2116,freq=1.0), product of:
              0.44179153 = queryWeight, product of:
                1.4601747 = boost
                4.9133477 = idf(docFreq=844, maxDocs=42306)
                0.061579347 = queryNorm
              0.46062636 = fieldWeight in 2116, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9133477 = idf(docFreq=844, maxDocs=42306)
                0.09375 = fieldNorm(doc=2116)
          0.2467368 = weight(abstract_txt:retrieval in 2116) [ClassicSimilarity], result of:
            0.2467368 = score(doc=2116,freq=3.0), product of:
              0.43883255 = queryWeight, product of:
                2.0580719 = boost
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.061579347 = queryNorm
              0.5622573 = fieldWeight in 2116, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.09375 = fieldNorm(doc=2116)
        0.85714287 = coord(6/7)
    
  4. Blair, D.C.; Maron, M.E.: Full-text information retrieval : further analysis and clarification (1990) 0.91
    0.9114163 = sum of:
      0.9114163 = product of:
        1.063319 = sum of:
          0.076260306 = weight(abstract_txt:system in 2115) [ClassicSimilarity], result of:
            0.076260306 = score(doc=2115,freq=1.0), product of:
              0.2072086 = queryWeight, product of:
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.061579347 = queryNorm
              0.3680364 = fieldWeight in 2115, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.109375 = fieldNorm(doc=2115)
          0.13314307 = weight(abstract_txt:text in 2115) [ClassicSimilarity], result of:
            0.13314307 = score(doc=2115,freq=1.0), product of:
              0.30043772 = queryWeight, product of:
                1.2041299 = boost
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.061579347 = queryNorm
              0.44316363 = fieldWeight in 2115, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.109375 = fieldNorm(doc=2115)
          0.18159482 = weight(abstract_txt:evaluation in 2115) [ClassicSimilarity], result of:
            0.18159482 = score(doc=2115,freq=1.0), product of:
              0.36949712 = queryWeight, product of:
                1.3353701 = boost
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.061579347 = queryNorm
              0.4914648 = fieldWeight in 2115, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.109375 = fieldNorm(doc=2115)
          0.23741761 = weight(abstract_txt:full in 2115) [ClassicSimilarity], result of:
            0.23741761 = score(doc=2115,freq=1.0), product of:
              0.44179153 = queryWeight, product of:
                1.4601747 = boost
                4.9133477 = idf(docFreq=844, maxDocs=42306)
                0.061579347 = queryNorm
              0.5373974 = fieldWeight in 2115, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9133477 = idf(docFreq=844, maxDocs=42306)
                0.109375 = fieldNorm(doc=2115)
          0.26870725 = weight(abstract_txt:effectiveness in 2115) [ClassicSimilarity], result of:
            0.26870725 = score(doc=2115,freq=1.0), product of:
              0.47980157 = queryWeight, product of:
                1.5216926 = boost
                5.12035 = idf(docFreq=686, maxDocs=42306)
                0.061579347 = queryNorm
              0.56003827 = fieldWeight in 2115, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.12035 = idf(docFreq=686, maxDocs=42306)
                0.109375 = fieldNorm(doc=2115)
          0.16619584 = weight(abstract_txt:retrieval in 2115) [ClassicSimilarity], result of:
            0.16619584 = score(doc=2115,freq=1.0), product of:
              0.43883255 = queryWeight, product of:
                2.0580719 = boost
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.061579347 = queryNorm
              0.37872267 = fieldWeight in 2115, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.109375 = fieldNorm(doc=2115)
        0.85714287 = coord(6/7)
    
  5. Behnert, C.; Lewandowski, D.: ¬A framework for designing retrieval effectiveness studies of library information systems using human relevance assessments (2017) 0.83
    0.8294455 = sum of:
      0.8294455 = product of:
        0.9676864 = sum of:
          0.043577317 = weight(abstract_txt:system in 619) [ClassicSimilarity], result of:
            0.043577317 = score(doc=619,freq=1.0), product of:
              0.2072086 = queryWeight, product of:
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.061579347 = queryNorm
              0.21030651 = fieldWeight in 619, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.0625 = fieldNorm(doc=619)
          0.07608175 = weight(abstract_txt:text in 619) [ClassicSimilarity], result of:
            0.07608175 = score(doc=619,freq=1.0), product of:
              0.30043772 = queryWeight, product of:
                1.2041299 = boost
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.061579347 = queryNorm
              0.25323635 = fieldWeight in 619, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.0625 = fieldNorm(doc=619)
          0.089632094 = weight(abstract_txt:document in 619) [ClassicSimilarity], result of:
            0.089632094 = score(doc=619,freq=1.0), product of:
              0.3351273 = queryWeight, product of:
                1.2717478 = boost
                4.2793097 = idf(docFreq=1592, maxDocs=42306)
                0.061579347 = queryNorm
              0.26745686 = fieldWeight in 619, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2793097 = idf(docFreq=1592, maxDocs=42306)
                0.0625 = fieldNorm(doc=619)
          0.20753695 = weight(abstract_txt:evaluation in 619) [ClassicSimilarity], result of:
            0.20753695 = score(doc=619,freq=4.0), product of:
              0.36949712 = queryWeight, product of:
                1.3353701 = boost
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.061579347 = queryNorm
              0.56167406 = fieldWeight in 619, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.0625 = fieldNorm(doc=619)
          0.2659512 = weight(abstract_txt:effectiveness in 619) [ClassicSimilarity], result of:
            0.2659512 = score(doc=619,freq=3.0), product of:
              0.47980157 = queryWeight, product of:
                1.5216926 = boost
                5.12035 = idf(docFreq=686, maxDocs=42306)
                0.061579347 = queryNorm
              0.5542941 = fieldWeight in 619, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.12035 = idf(docFreq=686, maxDocs=42306)
                0.0625 = fieldNorm(doc=619)
          0.28490713 = weight(abstract_txt:retrieval in 619) [ClassicSimilarity], result of:
            0.28490713 = score(doc=619,freq=9.0), product of:
              0.43883255 = queryWeight, product of:
                2.0580719 = boost
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.061579347 = queryNorm
              0.6492388 = fieldWeight in 619, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.4626071 = idf(docFreq=3604, maxDocs=42306)
                0.0625 = fieldNorm(doc=619)
        0.85714287 = coord(6/7)