Document (#35483)

Author
Cecchini, R.L.
Lorenzetti, C.M.
Maguitman, A.G.
Brignole, N.B.
Title
Multiobjective evolutionary algorithms for context-based search
Source
Journal of the American Society for Information Science and Technology. 61(2010) no.6, S.1258-1274
Year
2010
Abstract
Formulating high-quality queries is a key aspect of context-based search. However, determining the effectiveness of a query is challenging because multiple objectives, such as high precision and high recall, are usually involved. In this work, we study techniques that can be applied to evolve contextualized queries when the criteria for determining query quality are based on multiple objectives. We report on the results of three different strategies for evolving queries: (a) single-objective, (b) multiobjective with Pareto-based ranking, and (c) multiobjective with aggregative ranking. After a comprehensive evaluation with a large set of topics, we discuss the limitations of the single-objective approach and observe that both the Pareto-based and aggregative strategies are highly effective for evolving topical queries. In particular, our experiments lead us to conclude that the multiobjective techniques are superior to a baseline as well as to well-known and ad hoc query reformulation techniques.
Theme
Retrievalalgorithmen

Similar documents (content)

  1. Cecchini, R.L.; Lorenzetti, C.M.; Maguitman, A.G.; Brignole, N.B.: Using genetic algorithms to evolve a population of topical queries (2008) 0.36
    0.35653627 = sum of:
      0.35653627 = product of:
        0.7427839 = sum of:
          0.03870501 = weight(abstract_txt:search in 2443) [ClassicSimilarity], result of:
            0.03870501 = score(doc=2443,freq=5.0), product of:
              0.07570982 = queryWeight, product of:
                1.0211909 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.020267276 = queryNorm
              0.5112284 = fieldWeight in 2443, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.008285233 = weight(abstract_txt:with in 2443) [ClassicSimilarity], result of:
            0.008285233 = score(doc=2443,freq=1.0), product of:
              0.053031147 = queryWeight, product of:
                1.0467476 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.020267276 = queryNorm
              0.15623334 = fieldWeight in 2443, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.021082923 = weight(abstract_txt:well in 2443) [ClassicSimilarity], result of:
            0.021082923 = score(doc=2443,freq=1.0), product of:
              0.08634781 = queryWeight, product of:
                1.0905774 = boost
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.020267276 = queryNorm
              0.2441628 = fieldWeight in 2443, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.040879667 = weight(abstract_txt:context in 2443) [ClassicSimilarity], result of:
            0.040879667 = score(doc=2443,freq=2.0), product of:
              0.106567726 = queryWeight, product of:
                1.2115564 = boost
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.020267276 = queryNorm
              0.3836027 = fieldWeight in 2443, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.03561974 = weight(abstract_txt:quality in 2443) [ClassicSimilarity], result of:
            0.03561974 = score(doc=2443,freq=1.0), product of:
              0.12248736 = queryWeight, product of:
                1.2989022 = boost
                4.6528544 = idf(docFreq=1145, maxDocs=44218)
                0.020267276 = queryNorm
              0.2908034 = fieldWeight in 2443, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.6528544 = idf(docFreq=1145, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.047943536 = weight(abstract_txt:multiple in 2443) [ClassicSimilarity], result of:
            0.047943536 = score(doc=2443,freq=1.0), product of:
              0.14931983 = queryWeight, product of:
                1.4341334 = boost
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.020267276 = queryNorm
              0.3210795 = fieldWeight in 2443, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.06774067 = weight(abstract_txt:objective in 2443) [ClassicSimilarity], result of:
            0.06774067 = score(doc=2443,freq=1.0), product of:
              0.188017 = queryWeight, product of:
                1.6092716 = boost
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.020267276 = queryNorm
              0.36029014 = fieldWeight in 2443, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.06972523 = weight(abstract_txt:techniques in 2443) [ClassicSimilarity], result of:
            0.06972523 = score(doc=2443,freq=2.0), product of:
              0.17414506 = queryWeight, product of:
                1.8968457 = boost
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.020267276 = queryNorm
              0.40038592 = fieldWeight in 2443, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.5298495 = idf(docFreq=1295, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.11396372 = weight(abstract_txt:query in 2443) [ClassicSimilarity], result of:
            0.11396372 = score(doc=2443,freq=4.0), product of:
              0.1917869 = queryWeight, product of:
                1.9906087 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.020267276 = queryNorm
              0.5942206 = fieldWeight in 2443, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.06087135 = weight(abstract_txt:high in 2443) [ClassicSimilarity], result of:
            0.06087135 = score(doc=2443,freq=1.0), product of:
              0.20041789 = queryWeight, product of:
                2.0349076 = boost
                4.8595543 = idf(docFreq=931, maxDocs=44218)
                0.020267276 = queryNorm
              0.30372214 = fieldWeight in 2443, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8595543 = idf(docFreq=931, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.049608767 = weight(abstract_txt:based in 2443) [ClassicSimilarity], result of:
            0.049608767 = score(doc=2443,freq=3.0), product of:
              0.14375049 = queryWeight, product of:
                2.2248743 = boost
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.020267276 = queryNorm
              0.3451033 = fieldWeight in 2443, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
          0.1883581 = weight(abstract_txt:queries in 2443) [ClassicSimilarity], result of:
            0.1883581 = score(doc=2443,freq=4.0), product of:
              0.29508263 = queryWeight, product of:
                2.851134 = boost
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.020267276 = queryNorm
              0.63832325 = fieldWeight in 2443, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.0625 = fieldNorm(doc=2443)
        0.48 = coord(12/25)
    
  2. López-Herrera, A.G.; Herrera-Viedma, E.; Herrera, F.: ¬A study of the use of multi-objective evolutionary algorithms to learn Boolean queries : a comparative study (2009) 0.22
    0.21802619 = sum of:
      0.21802619 = product of:
        1.0901309 = sum of:
          0.21087828 = weight(abstract_txt:evolutionary in 1751) [ClassicSimilarity], result of:
            0.21087828 = score(doc=1751,freq=4.0), product of:
              0.15295412 = queryWeight, product of:
                1.0263522 = boost
                7.3530817 = idf(docFreq=76, maxDocs=44218)
                0.020267276 = queryNorm
              1.3787029 = fieldWeight in 1751, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.3530817 = idf(docFreq=76, maxDocs=44218)
                0.09375 = fieldNorm(doc=1751)
          0.031624384 = weight(abstract_txt:well in 1751) [ClassicSimilarity], result of:
            0.031624384 = score(doc=1751,freq=1.0), product of:
              0.08634781 = queryWeight, product of:
                1.0905774 = boost
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.020267276 = queryNorm
              0.3662442 = fieldWeight in 1751, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.09375 = fieldNorm(doc=1751)
          0.17599542 = weight(abstract_txt:objective in 1751) [ClassicSimilarity], result of:
            0.17599542 = score(doc=1751,freq=3.0), product of:
              0.188017 = queryWeight, product of:
                1.6092716 = boost
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.020267276 = queryNorm
              0.93606126 = fieldWeight in 1751, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.09375 = fieldNorm(doc=1751)
          0.47184888 = weight(abstract_txt:pareto in 1751) [ClassicSimilarity], result of:
            0.47184888 = score(doc=1751,freq=1.0), product of:
              0.5233255 = queryWeight, product of:
                2.6848297 = boost
                9.617446 = idf(docFreq=7, maxDocs=44218)
                0.020267276 = queryNorm
              0.9016355 = fieldWeight in 1751, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.617446 = idf(docFreq=7, maxDocs=44218)
                0.09375 = fieldNorm(doc=1751)
          0.19978394 = weight(abstract_txt:queries in 1751) [ClassicSimilarity], result of:
            0.19978394 = score(doc=1751,freq=2.0), product of:
              0.29508263 = queryWeight, product of:
                2.851134 = boost
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.020267276 = queryNorm
              0.67704403 = fieldWeight in 1751, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.09375 = fieldNorm(doc=1751)
        0.2 = coord(5/25)
    
  3. Lu, K.; Joo, S.; Lee, T.; Hu, R.: Factors that influence query reformulations and search performance in health information retrieval : a multilevel modeling approach (2017) 0.20
    0.20325856 = sum of:
      0.20325856 = product of:
        0.7259234 = sum of:
          0.03461881 = weight(abstract_txt:search in 3754) [ClassicSimilarity], result of:
            0.03461881 = score(doc=3754,freq=4.0), product of:
              0.07570982 = queryWeight, product of:
                1.0211909 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.020267276 = queryNorm
              0.45725656 = fieldWeight in 3754, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=3754)
          0.23778109 = weight(abstract_txt:reformulation in 3754) [ClassicSimilarity], result of:
            0.23778109 = score(doc=3754,freq=8.0), product of:
              0.17233586 = queryWeight, product of:
                1.0894408 = boost
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.020267276 = queryNorm
              1.379754 = fieldWeight in 3754, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.0625 = fieldNorm(doc=3754)
          0.021082923 = weight(abstract_txt:well in 3754) [ClassicSimilarity], result of:
            0.021082923 = score(doc=3754,freq=1.0), product of:
              0.08634781 = queryWeight, product of:
                1.0905774 = boost
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.020267276 = queryNorm
              0.2441628 = fieldWeight in 3754, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.0625 = fieldNorm(doc=3754)
          0.047943536 = weight(abstract_txt:multiple in 3754) [ClassicSimilarity], result of:
            0.047943536 = score(doc=3754,freq=1.0), product of:
              0.14931983 = queryWeight, product of:
                1.4341334 = boost
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.020267276 = queryNorm
              0.3210795 = fieldWeight in 3754, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.0625 = fieldNorm(doc=3754)
          0.050428577 = weight(abstract_txt:single in 3754) [ClassicSimilarity], result of:
            0.050428577 = score(doc=3754,freq=1.0), product of:
              0.154436 = queryWeight, product of:
                1.4584955 = boost
                5.2245407 = idf(docFreq=646, maxDocs=44218)
                0.020267276 = queryNorm
              0.3265338 = fieldWeight in 3754, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2245407 = idf(docFreq=646, maxDocs=44218)
                0.0625 = fieldNorm(doc=3754)
          0.17094558 = weight(abstract_txt:query in 3754) [ClassicSimilarity], result of:
            0.17094558 = score(doc=3754,freq=9.0), product of:
              0.1917869 = queryWeight, product of:
                1.9906087 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.020267276 = queryNorm
              0.89133084 = fieldWeight in 3754, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=3754)
          0.16312289 = weight(abstract_txt:queries in 3754) [ClassicSimilarity], result of:
            0.16312289 = score(doc=3754,freq=3.0), product of:
              0.29508263 = queryWeight, product of:
                2.851134 = boost
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.020267276 = queryNorm
              0.5528041 = fieldWeight in 3754, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.0625 = fieldNorm(doc=3754)
        0.28 = coord(7/25)
    
  4. Rieh, S.Y.; Xie, H.(I.): Analysis of multiple query reformulations on the web : the interactive information retrieval context (2006) 0.19
    0.19475688 = sum of:
      0.19475688 = product of:
        0.6086153 = sum of:
          0.03461881 = weight(abstract_txt:search in 976) [ClassicSimilarity], result of:
            0.03461881 = score(doc=976,freq=4.0), product of:
              0.07570982 = queryWeight, product of:
                1.0211909 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.020267276 = queryNorm
              0.45725656 = fieldWeight in 976, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
          0.008285233 = weight(abstract_txt:with in 976) [ClassicSimilarity], result of:
            0.008285233 = score(doc=976,freq=1.0), product of:
              0.053031147 = queryWeight, product of:
                1.0467476 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.020267276 = queryNorm
              0.15623334 = fieldWeight in 976, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
          0.22242385 = weight(abstract_txt:reformulation in 976) [ClassicSimilarity], result of:
            0.22242385 = score(doc=976,freq=7.0), product of:
              0.17233586 = queryWeight, product of:
                1.0894408 = boost
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.020267276 = queryNorm
              1.2906417 = fieldWeight in 976, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
          0.021082923 = weight(abstract_txt:well in 976) [ClassicSimilarity], result of:
            0.021082923 = score(doc=976,freq=1.0), product of:
              0.08634781 = queryWeight, product of:
                1.0905774 = boost
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.020267276 = queryNorm
              0.2441628 = fieldWeight in 976, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.9066048 = idf(docFreq=2416, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
          0.047943536 = weight(abstract_txt:multiple in 976) [ClassicSimilarity], result of:
            0.047943536 = score(doc=976,freq=1.0), product of:
              0.14931983 = queryWeight, product of:
                1.4341334 = boost
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.020267276 = queryNorm
              0.3210795 = fieldWeight in 976, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
          0.1395765 = weight(abstract_txt:query in 976) [ClassicSimilarity], result of:
            0.1395765 = score(doc=976,freq=6.0), product of:
              0.1917869 = queryWeight, product of:
                1.9906087 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.020267276 = queryNorm
              0.72776866 = fieldWeight in 976, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
          0.040505387 = weight(abstract_txt:based in 976) [ClassicSimilarity], result of:
            0.040505387 = score(doc=976,freq=2.0), product of:
              0.14375049 = queryWeight, product of:
                2.2248743 = boost
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.020267276 = queryNorm
              0.28177565 = fieldWeight in 976, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
          0.09417905 = weight(abstract_txt:queries in 976) [ClassicSimilarity], result of:
            0.09417905 = score(doc=976,freq=1.0), product of:
              0.29508263 = queryWeight, product of:
                2.851134 = boost
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.020267276 = queryNorm
              0.31916162 = fieldWeight in 976, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.0625 = fieldNorm(doc=976)
        0.32 = coord(8/25)
    
  5. Eastman, C.M.: 30,000 hits may be better than 300 : precision anomalies in Internet searches (2002) 0.19
    0.18930064 = sum of:
      0.18930064 = product of:
        0.59156454 = sum of:
          0.03461881 = weight(abstract_txt:search in 5231) [ClassicSimilarity], result of:
            0.03461881 = score(doc=5231,freq=4.0), product of:
              0.07570982 = queryWeight, product of:
                1.0211909 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.020267276 = queryNorm
              0.45725656 = fieldWeight in 5231, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=5231)
          0.011717089 = weight(abstract_txt:with in 5231) [ClassicSimilarity], result of:
            0.011717089 = score(doc=5231,freq=2.0), product of:
              0.053031147 = queryWeight, product of:
                1.0467476 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.020267276 = queryNorm
              0.22094731 = fieldWeight in 5231, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.0625 = fieldNorm(doc=5231)
          0.118890546 = weight(abstract_txt:reformulation in 5231) [ClassicSimilarity], result of:
            0.118890546 = score(doc=5231,freq=2.0), product of:
              0.17233586 = queryWeight, product of:
                1.0894408 = boost
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.020267276 = queryNorm
              0.689877 = fieldWeight in 5231, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.0625 = fieldNorm(doc=5231)
          0.0678024 = weight(abstract_txt:multiple in 5231) [ClassicSimilarity], result of:
            0.0678024 = score(doc=5231,freq=2.0), product of:
              0.14931983 = queryWeight, product of:
                1.4341334 = boost
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.020267276 = queryNorm
              0.45407498 = fieldWeight in 5231, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.137272 = idf(docFreq=705, maxDocs=44218)
                0.0625 = fieldNorm(doc=5231)
          0.10749318 = weight(abstract_txt:ranking in 5231) [ClassicSimilarity], result of:
            0.10749318 = score(doc=5231,freq=3.0), product of:
              0.17735535 = queryWeight, product of:
                1.5629783 = boost
                5.598813 = idf(docFreq=444, maxDocs=44218)
                0.020267276 = queryNorm
              0.6060893 = fieldWeight in 5231, 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=5231)
          0.05698186 = weight(abstract_txt:query in 5231) [ClassicSimilarity], result of:
            0.05698186 = score(doc=5231,freq=1.0), product of:
              0.1917869 = queryWeight, product of:
                1.9906087 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.020267276 = queryNorm
              0.2971103 = fieldWeight in 5231, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0625 = fieldNorm(doc=5231)
          0.06087135 = weight(abstract_txt:high in 5231) [ClassicSimilarity], result of:
            0.06087135 = score(doc=5231,freq=1.0), product of:
              0.20041789 = queryWeight, product of:
                2.0349076 = boost
                4.8595543 = idf(docFreq=931, maxDocs=44218)
                0.020267276 = queryNorm
              0.30372214 = fieldWeight in 5231, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8595543 = idf(docFreq=931, maxDocs=44218)
                0.0625 = fieldNorm(doc=5231)
          0.13318929 = weight(abstract_txt:queries in 5231) [ClassicSimilarity], result of:
            0.13318929 = score(doc=5231,freq=2.0), product of:
              0.29508263 = queryWeight, product of:
                2.851134 = boost
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.020267276 = queryNorm
              0.4513627 = fieldWeight in 5231, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.106586 = idf(docFreq=727, maxDocs=44218)
                0.0625 = fieldNorm(doc=5231)
        0.32 = coord(8/25)