Document (#3876)

Author
Robertson, S.E.
Title
On relevance weight estimation and query expansion
Source
Journal of documentation. 42(1986), S.182-188
Year
1986
Abstract
A Bayesian argument is used to suggest modifications to the Robertson/Sparck Jones relevance weighting formula, to accomodate the addition to the query of terms taken from the relevant documents identified during the search
Theme
Semantisches Umfeld in Indexierung u. Retrieval

Similar documents (author)

  1. Robertson, M.A.: Windows 3.0 for the online searcher (1991) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 592) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 592, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=592)
    
  2. Robertson, S.E.: Some recent theories and models in information retrieval (1980) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 1326) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 1326, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=1326)
    
  3. Robertson, S.E.: Theories and models in information retrieval (1977) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 1844) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 1844, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=1844)
    
  4. Robertson, S.E.: On term selection for query expansion (1990) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 2650) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 2650, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=2650)
    
  5. Robertson, S.E.: Indexing theory and retrieval effectiveness (1979) 4.56
    4.5562925 = sum of:
      4.5562925 = weight(author_txt:robertson in 5175) [ClassicSimilarity], result of:
        4.5562925 = fieldWeight in 5175, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          7.2900677 = idf(docFreq=78, maxDocs=42596)
          0.625 = fieldNorm(doc=5175)
    

Similar documents (content)

  1. Robertson, M.; Willett, P.: ¬An upperbound to the performance of ranked output searching : optimal weighting of query terms using a genetic algorithms (1996) 0.51
    0.5148513 = sum of:
      0.5148513 = product of:
        1.6089102 = sum of:
          0.01169588 = weight(abstract_txt:from in 47) [ClassicSimilarity], result of:
            0.01169588 = score(doc=47,freq=1.0), product of:
              0.03354699 = queryWeight, product of:
                2.7891335 = idf(docFreq=7117, maxDocs=42596)
                0.012027746 = queryNorm
              0.3486417 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.7891335 = idf(docFreq=7117, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
          0.0360511 = weight(abstract_txt:terms in 47) [ClassicSimilarity], result of:
            0.0360511 = score(doc=47,freq=1.0), product of:
              0.071052164 = queryWeight, product of:
                1.4553313 = boost
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.012027746 = queryNorm
              0.5073892 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
          0.22332479 = weight(abstract_txt:weight in 47) [ClassicSimilarity], result of:
            0.22332479 = score(doc=47,freq=1.0), product of:
              0.2396567 = queryWeight, product of:
                2.6728096 = boost
                7.454823 = idf(docFreq=66, maxDocs=42596)
                0.012027746 = queryNorm
              0.9318529 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.454823 = idf(docFreq=66, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
          0.25672767 = weight(abstract_txt:jones in 47) [ClassicSimilarity], result of:
            0.25672767 = score(doc=47,freq=1.0), product of:
              0.26299456 = queryWeight, product of:
                2.7999263 = boost
                7.809368 = idf(docFreq=46, maxDocs=42596)
                0.012027746 = queryNorm
              0.976171 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.809368 = idf(docFreq=46, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
          0.37833777 = weight(abstract_txt:robertson in 47) [ClassicSimilarity], result of:
            0.37833777 = score(doc=47,freq=1.0), product of:
              0.34057918 = queryWeight, product of:
                3.1862679 = boost
                8.886927 = idf(docFreq=15, maxDocs=42596)
                0.012027746 = queryNorm
              1.1108658 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.886927 = idf(docFreq=15, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
          0.40548137 = weight(abstract_txt:sparck in 47) [ClassicSimilarity], result of:
            0.40548137 = score(doc=47,freq=1.0), product of:
              0.35668012 = queryWeight, product of:
                3.2607138 = boost
                9.094566 = idf(docFreq=12, maxDocs=42596)
                0.012027746 = queryNorm
              1.1368208 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.094566 = idf(docFreq=12, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
          0.11437151 = weight(abstract_txt:query in 47) [ClassicSimilarity], result of:
            0.11437151 = score(doc=47,freq=1.0), product of:
              0.19327998 = queryWeight, product of:
                3.3945456 = boost
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.012027746 = queryNorm
              0.5917401 = fieldWeight in 47, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
          0.18292005 = weight(abstract_txt:relevance in 47) [ClassicSimilarity], result of:
            0.18292005 = score(doc=47,freq=2.0), product of:
              0.20980018 = queryWeight, product of:
                3.5366426 = boost
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.012027746 = queryNorm
              0.8718775 = fieldWeight in 47, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.125 = fieldNorm(doc=47)
        0.32 = coord(8/25)
    
  2. Robertson, S.E.: On term selection for query expansion (1990) 0.34
    0.33775523 = sum of:
      0.33775523 = product of:
        1.0554851 = sum of:
          0.025660558 = weight(abstract_txt:used in 2650) [ClassicSimilarity], result of:
            0.025660558 = score(doc=2650,freq=2.0), product of:
              0.049142852 = queryWeight, product of:
                1.2103289 = boost
                3.375769 = idf(docFreq=3958, maxDocs=42596)
                0.012027746 = queryNorm
              0.52216256 = fieldWeight in 2650, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.375769 = idf(docFreq=3958, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
          0.044610962 = weight(abstract_txt:terms in 2650) [ClassicSimilarity], result of:
            0.044610962 = score(doc=2650,freq=2.0), product of:
              0.071052164 = queryWeight, product of:
                1.4553313 = boost
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.012027746 = queryNorm
              0.6278621 = fieldWeight in 2650, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
          0.14299749 = weight(abstract_txt:argument in 2650) [ClassicSimilarity], result of:
            0.14299749 = score(doc=2650,freq=1.0), product of:
              0.194616 = queryWeight, product of:
                2.408588 = boost
                6.717873 = idf(docFreq=139, maxDocs=42596)
                0.012027746 = queryNorm
              0.7347674 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.717873 = idf(docFreq=139, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
          0.2265823 = weight(abstract_txt:weighting in 2650) [ClassicSimilarity], result of:
            0.2265823 = score(doc=2650,freq=2.0), product of:
              0.20994245 = queryWeight, product of:
                2.5016315 = boost
                6.9773846 = idf(docFreq=107, maxDocs=42596)
                0.012027746 = queryNorm
              1.0792592 = fieldWeight in 2650, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.9773846 = idf(docFreq=107, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
          0.1954092 = weight(abstract_txt:weight in 2650) [ClassicSimilarity], result of:
            0.1954092 = score(doc=2650,freq=1.0), product of:
              0.2396567 = queryWeight, product of:
                2.6728096 = boost
                7.454823 = idf(docFreq=66, maxDocs=42596)
                0.012027746 = queryNorm
              0.8153713 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.454823 = idf(docFreq=66, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
          0.20697352 = weight(abstract_txt:formula in 2650) [ClassicSimilarity], result of:
            0.20697352 = score(doc=2650,freq=1.0), product of:
              0.24902108 = queryWeight, product of:
                2.724528 = boost
                7.5990725 = idf(docFreq=57, maxDocs=42596)
                0.012027746 = queryNorm
              0.83114856 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5990725 = idf(docFreq=57, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
          0.10007507 = weight(abstract_txt:query in 2650) [ClassicSimilarity], result of:
            0.10007507 = score(doc=2650,freq=1.0), product of:
              0.19327998 = queryWeight, product of:
                3.3945456 = boost
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.012027746 = queryNorm
              0.51777256 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
          0.11317602 = weight(abstract_txt:relevance in 2650) [ClassicSimilarity], result of:
            0.11317602 = score(doc=2650,freq=1.0), product of:
              0.20980018 = queryWeight, product of:
                3.5366426 = boost
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.012027746 = queryNorm
              0.5394467 = fieldWeight in 2650, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.109375 = fieldNorm(doc=2650)
        0.32 = coord(8/25)
    
  3. Robertson, S.E.: OKAPI at TREC-1 (1994) 0.26
    0.26404697 = sum of:
      0.26404697 = product of:
        1.3202348 = sum of:
          0.020736864 = weight(abstract_txt:used in 7953) [ClassicSimilarity], result of:
            0.020736864 = score(doc=7953,freq=1.0), product of:
              0.049142852 = queryWeight, product of:
                1.2103289 = boost
                3.375769 = idf(docFreq=3958, maxDocs=42596)
                0.012027746 = queryNorm
              0.4219711 = fieldWeight in 7953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.375769 = idf(docFreq=3958, maxDocs=42596)
                0.125 = fieldNorm(doc=7953)
          0.2589512 = weight(abstract_txt:weighting in 7953) [ClassicSimilarity], result of:
            0.2589512 = score(doc=7953,freq=2.0), product of:
              0.20994245 = queryWeight, product of:
                2.5016315 = boost
                6.9773846 = idf(docFreq=107, maxDocs=42596)
                0.012027746 = queryNorm
              1.233439 = fieldWeight in 7953, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.9773846 = idf(docFreq=107, maxDocs=42596)
                0.125 = fieldNorm(doc=7953)
          0.25672767 = weight(abstract_txt:jones in 7953) [ClassicSimilarity], result of:
            0.25672767 = score(doc=7953,freq=1.0), product of:
              0.26299456 = queryWeight, product of:
                2.7999263 = boost
                7.809368 = idf(docFreq=46, maxDocs=42596)
                0.012027746 = queryNorm
              0.976171 = fieldWeight in 7953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.809368 = idf(docFreq=46, maxDocs=42596)
                0.125 = fieldNorm(doc=7953)
          0.37833777 = weight(abstract_txt:robertson in 7953) [ClassicSimilarity], result of:
            0.37833777 = score(doc=7953,freq=1.0), product of:
              0.34057918 = queryWeight, product of:
                3.1862679 = boost
                8.886927 = idf(docFreq=15, maxDocs=42596)
                0.012027746 = queryNorm
              1.1108658 = fieldWeight in 7953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.886927 = idf(docFreq=15, maxDocs=42596)
                0.125 = fieldNorm(doc=7953)
          0.40548137 = weight(abstract_txt:sparck in 7953) [ClassicSimilarity], result of:
            0.40548137 = score(doc=7953,freq=1.0), product of:
              0.35668012 = queryWeight, product of:
                3.2607138 = boost
                9.094566 = idf(docFreq=12, maxDocs=42596)
                0.012027746 = queryNorm
              1.1368208 = fieldWeight in 7953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.094566 = idf(docFreq=12, maxDocs=42596)
                0.125 = fieldNorm(doc=7953)
        0.2 = coord(5/25)
    
  4. Cai, F.; Wang, S.; Rijke, M.de: Behavior-based personalization in web search (2017) 0.26
    0.26042062 = sum of:
      0.26042062 = product of:
        0.7233906 = sum of:
          0.010128928 = weight(abstract_txt:from in 4528) [ClassicSimilarity], result of:
            0.010128928 = score(doc=4528,freq=3.0), product of:
              0.03354699 = queryWeight, product of:
                2.7891335 = idf(docFreq=7117, maxDocs=42596)
                0.012027746 = queryNorm
              0.30193254 = fieldWeight in 4528, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.7891335 = idf(docFreq=7117, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.02625852 = weight(abstract_txt:search in 4528) [ClassicSimilarity], result of:
            0.02625852 = score(doc=4528,freq=4.0), product of:
              0.057519063 = queryWeight, product of:
                1.3094205 = boost
                3.6521485 = idf(docFreq=3002, maxDocs=42596)
                0.012027746 = queryNorm
              0.45651856 = fieldWeight in 4528, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6521485 = idf(docFreq=3002, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.037522376 = weight(abstract_txt:documents in 4528) [ClassicSimilarity], result of:
            0.037522376 = score(doc=4528,freq=4.0), product of:
              0.07297238 = queryWeight, product of:
                1.4748657 = boost
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.012027746 = queryNorm
              0.5141997 = fieldWeight in 4528, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.02713253 = weight(abstract_txt:relevant in 4528) [ClassicSimilarity], result of:
            0.02713253 = score(doc=4528,freq=1.0), product of:
              0.09332081 = queryWeight, product of:
                1.667871 = boost
                4.651915 = idf(docFreq=1104, maxDocs=42596)
                0.012027746 = queryNorm
              0.2907447 = fieldWeight in 4528, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.651915 = idf(docFreq=1104, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.054658893 = weight(abstract_txt:during in 4528) [ClassicSimilarity], result of:
            0.054658893 = score(doc=4528,freq=3.0), product of:
              0.10320921 = queryWeight, product of:
                1.7540115 = boost
                4.8921723 = idf(docFreq=868, maxDocs=42596)
                0.012027746 = queryNorm
              0.52959317 = fieldWeight in 4528, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.8921723 = idf(docFreq=868, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.15791446 = weight(abstract_txt:weight in 4528) [ClassicSimilarity], result of:
            0.15791446 = score(doc=4528,freq=2.0), product of:
              0.2396567 = queryWeight, product of:
                2.6728096 = boost
                7.454823 = idf(docFreq=66, maxDocs=42596)
                0.012027746 = queryNorm
              0.65891945 = fieldWeight in 4528, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.454823 = idf(docFreq=66, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.15768377 = weight(abstract_txt:bayesian in 4528) [ClassicSimilarity], result of:
            0.15768377 = score(doc=4528,freq=1.0), product of:
              0.30165437 = queryWeight, product of:
                2.9986656 = boost
                8.363679 = idf(docFreq=26, maxDocs=42596)
                0.012027746 = queryNorm
              0.52272993 = fieldWeight in 4528, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.363679 = idf(docFreq=26, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.14007594 = weight(abstract_txt:query in 4528) [ClassicSimilarity], result of:
            0.14007594 = score(doc=4528,freq=6.0), product of:
              0.19327998 = queryWeight, product of:
                3.3945456 = boost
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.012027746 = queryNorm
              0.7247307 = fieldWeight in 4528, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
          0.1120152 = weight(abstract_txt:relevance in 4528) [ClassicSimilarity], result of:
            0.1120152 = score(doc=4528,freq=3.0), product of:
              0.20980018 = queryWeight, product of:
                3.5366426 = boost
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.012027746 = queryNorm
              0.53391373 = fieldWeight in 4528, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.0625 = fieldNorm(doc=4528)
        0.36 = coord(9/25)
    
  5. Efthimiadis, E.N.: Interactive query expansion : a user-based evaluation in a relevance feedback environment (2000) 0.25
    0.24633683 = sum of:
      0.24633683 = product of:
        0.68426895 = sum of:
          0.007236456 = weight(abstract_txt:from in 6702) [ClassicSimilarity], result of:
            0.007236456 = score(doc=6702,freq=2.0), product of:
              0.03354699 = queryWeight, product of:
                2.7891335 = idf(docFreq=7117, maxDocs=42596)
                0.012027746 = queryNorm
              0.21571103 = fieldWeight in 6702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.7891335 = idf(docFreq=7117, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.016246632 = weight(abstract_txt:search in 6702) [ClassicSimilarity], result of:
            0.016246632 = score(doc=6702,freq=2.0), product of:
              0.057519063 = queryWeight, product of:
                1.3094205 = boost
                3.6521485 = idf(docFreq=3002, maxDocs=42596)
                0.012027746 = queryNorm
              0.28245646 = fieldWeight in 6702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6521485 = idf(docFreq=3002, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.05463704 = weight(abstract_txt:terms in 6702) [ClassicSimilarity], result of:
            0.05463704 = score(doc=6702,freq=12.0), product of:
              0.071052164 = queryWeight, product of:
                1.4553313 = boost
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.012027746 = queryNorm
              0.76897085 = fieldWeight in 6702, product of:
                3.4641016 = tf(freq=12.0), with freq of:
                  12.0 = termFreq=12.0
                4.0591135 = idf(docFreq=1998, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.023215786 = weight(abstract_txt:documents in 6702) [ClassicSimilarity], result of:
            0.023215786 = score(doc=6702,freq=2.0), product of:
              0.07297238 = queryWeight, product of:
                1.4748657 = boost
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.012027746 = queryNorm
              0.31814483 = fieldWeight in 6702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1135974 = idf(docFreq=1892, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.033574793 = weight(abstract_txt:relevant in 6702) [ClassicSimilarity], result of:
            0.033574793 = score(doc=6702,freq=2.0), product of:
              0.09332081 = queryWeight, product of:
                1.667871 = boost
                4.651915 = idf(docFreq=1104, maxDocs=42596)
                0.012027746 = queryNorm
              0.3597782 = fieldWeight in 6702, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.651915 = idf(docFreq=1104, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.050294183 = weight(abstract_txt:identified in 6702) [ClassicSimilarity], result of:
            0.050294183 = score(doc=6702,freq=3.0), product of:
              0.10672948 = queryWeight, product of:
                1.7836736 = boost
                4.974904 = idf(docFreq=799, maxDocs=42596)
                0.012027746 = queryNorm
              0.47123048 = fieldWeight in 6702, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.974904 = idf(docFreq=799, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.19474074 = weight(abstract_txt:expansion in 6702) [ClassicSimilarity], result of:
            0.19474074 = score(doc=6702,freq=13.0), product of:
              0.1614246 = queryWeight, product of:
                2.1936033 = boost
                6.1182523 = idf(docFreq=254, maxDocs=42596)
                0.012027746 = queryNorm
              1.2063882 = fieldWeight in 6702, product of:
                3.6055512 = tf(freq=13.0), with freq of:
                  13.0 = termFreq=13.0
                6.1182523 = idf(docFreq=254, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.20631005 = weight(abstract_txt:query in 6702) [ClassicSimilarity], result of:
            0.20631005 = score(doc=6702,freq=17.0), product of:
              0.19327998 = queryWeight, product of:
                3.3945456 = boost
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.012027746 = queryNorm
              1.0674155 = fieldWeight in 6702, product of:
                4.1231055 = tf(freq=17.0), with freq of:
                  17.0 = termFreq=17.0
                4.7339206 = idf(docFreq=1017, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
          0.098013304 = weight(abstract_txt:relevance in 6702) [ClassicSimilarity], result of:
            0.098013304 = score(doc=6702,freq=3.0), product of:
              0.20980018 = queryWeight, product of:
                3.5366426 = boost
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.012027746 = queryNorm
              0.46717453 = fieldWeight in 6702, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.932084 = idf(docFreq=834, maxDocs=42596)
                0.0546875 = fieldNorm(doc=6702)
        0.36 = coord(9/25)