Document (#20881)

Author
Conlon, J.R.
Conlon, S.J.
Title
Robustness of well-designed retrieval performance measures under optimal user behavior
Source
Journal of the American Society for Information Science. 49(1998) no.4, S.356-363
Year
1998
Abstract
Considers a simple model of an information retrieval technology, and uses this model to examine performance measures for information retrieval systems. If an user is employing and information retrieval system optimally, then reasonable performance measures will tend to be relatively robust, or insensitive, to small variations in assumptions about the user's behaviour. Reports a simple empirical illustration of this approach, though more work will be needed to determine exactly how robust performance measures will be in practical application

Similar documents (content)

  1. Conlon, J.R.; Conlon, S.J.: Optimal use of an information retrieval system (1996) 0.24
    0.24105999 = sum of:
      0.24105999 = product of:
        0.75331247 = sum of:
          0.14236008 = weight(abstract_txt:behaviour in 5125) [ClassicSimilarity], result of:
            0.14236008 = score(doc=5125,freq=4.0), product of:
              0.11330594 = queryWeight, product of:
                1.076827 = boost
                5.7436438 = idf(docFreq=384, maxDocs=44218)
                0.018319737 = queryNorm
              1.256422 = fieldWeight in 5125, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.7436438 = idf(docFreq=384, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
          0.12839949 = weight(abstract_txt:user's in 5125) [ClassicSimilarity], result of:
            0.12839949 = score(doc=5125,freq=3.0), product of:
              0.116416804 = queryWeight, product of:
                1.0915093 = boost
                5.8219566 = idf(docFreq=355, maxDocs=44218)
                0.018319737 = queryNorm
              1.1029292 = fieldWeight in 5125, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.8219566 = idf(docFreq=355, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
          0.15928017 = weight(abstract_txt:optimal in 5125) [ClassicSimilarity], result of:
            0.15928017 = score(doc=5125,freq=2.0), product of:
              0.15385503 = queryWeight, product of:
                1.2548027 = boost
                6.6929407 = idf(docFreq=148, maxDocs=44218)
                0.018319737 = queryNorm
              1.0352614 = fieldWeight in 5125, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.6929407 = idf(docFreq=148, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
          0.015990889 = weight(abstract_txt:information in 5125) [ClassicSimilarity], result of:
            0.015990889 = score(doc=5125,freq=1.0), product of:
              0.0603906 = queryWeight, product of:
                1.3616482 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.018319737 = queryNorm
              0.264791 = fieldWeight in 5125, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
          0.037551165 = weight(abstract_txt:user in 5125) [ClassicSimilarity], result of:
            0.037551165 = score(doc=5125,freq=1.0), product of:
              0.09320506 = queryWeight, product of:
                1.3811929 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.018319737 = queryNorm
              0.40288764 = fieldWeight in 5125, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
          0.067302175 = weight(abstract_txt:model in 5125) [ClassicSimilarity], result of:
            0.067302175 = score(doc=5125,freq=2.0), product of:
              0.1091524 = queryWeight, product of:
                1.4946904 = boost
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.018319737 = queryNorm
              0.61658907 = fieldWeight in 5125, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
          0.11324438 = weight(abstract_txt:simple in 5125) [ClassicSimilarity], result of:
            0.11324438 = score(doc=5125,freq=1.0), product of:
              0.19455166 = queryWeight, product of:
                1.9955016 = boost
                5.321862 = idf(docFreq=586, maxDocs=44218)
                0.018319737 = queryNorm
              0.5820787 = fieldWeight in 5125, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.321862 = idf(docFreq=586, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
          0.0891841 = weight(abstract_txt:retrieval in 5125) [ClassicSimilarity], result of:
            0.0891841 = score(doc=5125,freq=2.0), product of:
              0.16591367 = queryWeight, product of:
                2.6060977 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018319737 = queryNorm
              0.53753316 = fieldWeight in 5125, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.109375 = fieldNorm(doc=5125)
        0.32 = coord(8/25)
    
  2. Bartell, B.T.; Cottrell, G.W.; Belew, R.K.: Optimizing similarity using multi-query relevance feedback (1998) 0.21
    0.21357624 = sum of:
      0.21357624 = product of:
        0.5932673 = sum of:
          0.04236085 = weight(abstract_txt:user's in 1152) [ClassicSimilarity], result of:
            0.04236085 = score(doc=1152,freq=1.0), product of:
              0.116416804 = queryWeight, product of:
                1.0915093 = boost
                5.8219566 = idf(docFreq=355, maxDocs=44218)
                0.018319737 = queryNorm
              0.3638723 = fieldWeight in 1152, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8219566 = idf(docFreq=355, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.04978471 = weight(abstract_txt:though in 1152) [ClassicSimilarity], result of:
            0.04978471 = score(doc=1152,freq=1.0), product of:
              0.1296492 = queryWeight, product of:
                1.1518729 = boost
                6.1439276 = idf(docFreq=257, maxDocs=44218)
                0.018319737 = queryNorm
              0.38399547 = fieldWeight in 1152, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1439276 = idf(docFreq=257, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.09101724 = weight(abstract_txt:optimal in 1152) [ClassicSimilarity], result of:
            0.09101724 = score(doc=1152,freq=2.0), product of:
              0.15385503 = queryWeight, product of:
                1.2548027 = boost
                6.6929407 = idf(docFreq=148, maxDocs=44218)
                0.018319737 = queryNorm
              0.59157795 = fieldWeight in 1152, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.6929407 = idf(docFreq=148, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.00913765 = weight(abstract_txt:information in 1152) [ClassicSimilarity], result of:
            0.00913765 = score(doc=1152,freq=1.0), product of:
              0.0603906 = queryWeight, product of:
                1.3616482 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.018319737 = queryNorm
              0.15130915 = fieldWeight in 1152, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.021457808 = weight(abstract_txt:user in 1152) [ClassicSimilarity], result of:
            0.021457808 = score(doc=1152,freq=1.0), product of:
              0.09320506 = queryWeight, product of:
                1.3811929 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.018319737 = queryNorm
              0.23022151 = fieldWeight in 1152, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.027194187 = weight(abstract_txt:model in 1152) [ClassicSimilarity], result of:
            0.027194187 = score(doc=1152,freq=1.0), product of:
              0.1091524 = queryWeight, product of:
                1.4946904 = boost
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.018319737 = queryNorm
              0.24913962 = fieldWeight in 1152, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.07207164 = weight(abstract_txt:retrieval in 1152) [ClassicSimilarity], result of:
            0.07207164 = score(doc=1152,freq=4.0), product of:
              0.16591367 = queryWeight, product of:
                2.6060977 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018319737 = queryNorm
              0.43439242 = fieldWeight in 1152, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.085246965 = weight(abstract_txt:performance in 1152) [ClassicSimilarity], result of:
            0.085246965 = score(doc=1152,freq=1.0), product of:
              0.2945632 = queryWeight, product of:
                3.472473 = boost
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.018319737 = queryNorm
              0.28940126 = fieldWeight in 1152, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
          0.19499622 = weight(abstract_txt:measures in 1152) [ClassicSimilarity], result of:
            0.19499622 = score(doc=1152,freq=2.0), product of:
              0.40588224 = queryWeight, product of:
                4.076145 = boost
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.018319737 = queryNorm
              0.48042563 = fieldWeight in 1152, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.0625 = fieldNorm(doc=1152)
        0.36 = coord(9/25)
    
  3. Losee, R.M.: ¬The effect of assigning a metadata or indexing term on document ordering (2013) 0.19
    0.19064438 = sum of:
      0.19064438 = product of:
        0.6808728 = sum of:
          0.07401351 = weight(abstract_txt:assumptions in 1100) [ClassicSimilarity], result of:
            0.07401351 = score(doc=1100,freq=1.0), product of:
              0.14553693 = queryWeight, product of:
                1.2204113 = boost
                6.5095015 = idf(docFreq=178, maxDocs=44218)
                0.018319737 = queryNorm
              0.5085548 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.5095015 = idf(docFreq=178, maxDocs=44218)
                0.078125 = fieldNorm(doc=1100)
          0.011422062 = weight(abstract_txt:information in 1100) [ClassicSimilarity], result of:
            0.011422062 = score(doc=1100,freq=1.0), product of:
              0.0603906 = queryWeight, product of:
                1.3616482 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.018319737 = queryNorm
              0.18913643 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.078125 = fieldNorm(doc=1100)
          0.05887714 = weight(abstract_txt:model in 1100) [ClassicSimilarity], result of:
            0.05887714 = score(doc=1100,freq=3.0), product of:
              0.1091524 = queryWeight, product of:
                1.4946904 = boost
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.018319737 = queryNorm
              0.5394031 = fieldWeight in 1100, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.078125 = fieldNorm(doc=1100)
          0.08088884 = weight(abstract_txt:simple in 1100) [ClassicSimilarity], result of:
            0.08088884 = score(doc=1100,freq=1.0), product of:
              0.19455166 = queryWeight, product of:
                1.9955016 = boost
                5.321862 = idf(docFreq=586, maxDocs=44218)
                0.018319737 = queryNorm
              0.41577047 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.321862 = idf(docFreq=586, maxDocs=44218)
                0.078125 = fieldNorm(doc=1100)
          0.045044772 = weight(abstract_txt:retrieval in 1100) [ClassicSimilarity], result of:
            0.045044772 = score(doc=1100,freq=1.0), product of:
              0.16591367 = queryWeight, product of:
                2.6060977 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018319737 = queryNorm
              0.27149525 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.078125 = fieldNorm(doc=1100)
          0.2382725 = weight(abstract_txt:performance in 1100) [ClassicSimilarity], result of:
            0.2382725 = score(doc=1100,freq=5.0), product of:
              0.2945632 = queryWeight, product of:
                3.472473 = boost
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.018319737 = queryNorm
              0.80890113 = fieldWeight in 1100, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.078125 = fieldNorm(doc=1100)
          0.17235395 = weight(abstract_txt:measures in 1100) [ClassicSimilarity], result of:
            0.17235395 = score(doc=1100,freq=1.0), product of:
              0.40588224 = queryWeight, product of:
                4.076145 = boost
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.018319737 = queryNorm
              0.4246403 = fieldWeight in 1100, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.078125 = fieldNorm(doc=1100)
        0.28 = coord(7/25)
    
  4. Harter, S.P.: Variations in relevance assessments and the measurement of retrieval effectiveness (1996) 0.18
    0.1791746 = sum of:
      0.1791746 = product of:
        0.63990927 = sum of:
          0.14522694 = weight(abstract_txt:variations in 3004) [ClassicSimilarity], result of:
            0.14522694 = score(doc=3004,freq=5.0), product of:
              0.15479158 = queryWeight, product of:
                1.2586161 = boost
                6.7132807 = idf(docFreq=145, maxDocs=44218)
                0.018319737 = queryNorm
              0.93820953 = fieldWeight in 3004, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                6.7132807 = idf(docFreq=145, maxDocs=44218)
                0.0625 = fieldNorm(doc=3004)
          0.012922589 = weight(abstract_txt:information in 3004) [ClassicSimilarity], result of:
            0.012922589 = score(doc=3004,freq=2.0), product of:
              0.0603906 = queryWeight, product of:
                1.3616482 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.018319737 = queryNorm
              0.21398345 = fieldWeight in 3004, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.0625 = fieldNorm(doc=3004)
          0.021457808 = weight(abstract_txt:user in 3004) [ClassicSimilarity], result of:
            0.021457808 = score(doc=3004,freq=1.0), product of:
              0.09320506 = queryWeight, product of:
                1.3811929 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.018319737 = queryNorm
              0.23022151 = fieldWeight in 3004, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.0625 = fieldNorm(doc=3004)
          0.037075095 = weight(abstract_txt:will in 3004) [ClassicSimilarity], result of:
            0.037075095 = score(doc=3004,freq=1.0), product of:
              0.1536271 = queryWeight, product of:
                2.1717715 = boost
                3.8613079 = idf(docFreq=2528, maxDocs=44218)
                0.018319737 = queryNorm
              0.24133174 = fieldWeight in 3004, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.8613079 = idf(docFreq=2528, maxDocs=44218)
                0.0625 = fieldNorm(doc=3004)
          0.08057854 = weight(abstract_txt:retrieval in 3004) [ClassicSimilarity], result of:
            0.08057854 = score(doc=3004,freq=5.0), product of:
              0.16591367 = queryWeight, product of:
                2.6060977 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018319737 = queryNorm
              0.4856655 = fieldWeight in 3004, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.0625 = fieldNorm(doc=3004)
          0.14765206 = weight(abstract_txt:performance in 3004) [ClassicSimilarity], result of:
            0.14765206 = score(doc=3004,freq=3.0), product of:
              0.2945632 = queryWeight, product of:
                3.472473 = boost
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.018319737 = queryNorm
              0.50125766 = fieldWeight in 3004, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.0625 = fieldNorm(doc=3004)
          0.19499622 = weight(abstract_txt:measures in 3004) [ClassicSimilarity], result of:
            0.19499622 = score(doc=3004,freq=2.0), product of:
              0.40588224 = queryWeight, product of:
                4.076145 = boost
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.018319737 = queryNorm
              0.48042563 = fieldWeight in 3004, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.0625 = fieldNorm(doc=3004)
        0.28 = coord(7/25)
    
  5. Bhatia, S.K.; Deogun, J.S.; Raghavan, V.V.: Conceptual query formulation and retrieval (1995) 0.17
    0.16836125 = sum of:
      0.16836125 = product of:
        0.5261289 = sum of:
          0.059907287 = weight(abstract_txt:user's in 2607) [ClassicSimilarity], result of:
            0.059907287 = score(doc=2607,freq=2.0), product of:
              0.116416804 = queryWeight, product of:
                1.0915093 = boost
                5.8219566 = idf(docFreq=355, maxDocs=44218)
                0.018319737 = queryNorm
              0.5145931 = fieldWeight in 2607, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.8219566 = idf(docFreq=355, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
          0.0715885 = weight(abstract_txt:employing in 2607) [ClassicSimilarity], result of:
            0.0715885 = score(doc=2607,freq=1.0), product of:
              0.16517136 = queryWeight, product of:
                1.3001306 = boost
                6.9347134 = idf(docFreq=116, maxDocs=44218)
                0.018319737 = queryNorm
              0.4334196 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.9347134 = idf(docFreq=116, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
          0.00913765 = weight(abstract_txt:information in 2607) [ClassicSimilarity], result of:
            0.00913765 = score(doc=2607,freq=1.0), product of:
              0.0603906 = queryWeight, product of:
                1.3616482 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.018319737 = queryNorm
              0.15130915 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
          0.052560687 = weight(abstract_txt:user in 2607) [ClassicSimilarity], result of:
            0.052560687 = score(doc=2607,freq=6.0), product of:
              0.09320506 = queryWeight, product of:
                1.3811929 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.018319737 = queryNorm
              0.56392527 = fieldWeight in 2607, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
          0.03845839 = weight(abstract_txt:model in 2607) [ClassicSimilarity], result of:
            0.03845839 = score(doc=2607,freq=2.0), product of:
              0.1091524 = queryWeight, product of:
                1.4946904 = boost
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.018319737 = queryNorm
              0.35233662 = fieldWeight in 2607, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.986234 = idf(docFreq=2231, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
          0.03603582 = weight(abstract_txt:retrieval in 2607) [ClassicSimilarity], result of:
            0.03603582 = score(doc=2607,freq=1.0), product of:
              0.16591367 = queryWeight, product of:
                2.6060977 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.018319737 = queryNorm
              0.21719621 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
          0.120557405 = weight(abstract_txt:performance in 2607) [ClassicSimilarity], result of:
            0.120557405 = score(doc=2607,freq=2.0), product of:
              0.2945632 = queryWeight, product of:
                3.472473 = boost
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.018319737 = queryNorm
              0.40927517 = fieldWeight in 2607, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.63042 = idf(docFreq=1171, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
          0.13788316 = weight(abstract_txt:measures in 2607) [ClassicSimilarity], result of:
            0.13788316 = score(doc=2607,freq=1.0), product of:
              0.40588224 = queryWeight, product of:
                4.076145 = boost
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.018319737 = queryNorm
              0.33971223 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4353957 = idf(docFreq=523, maxDocs=44218)
                0.0625 = fieldNorm(doc=2607)
        0.32 = coord(8/25)