Document (#42302)

Author
Rodríguez-Vidal, J.
Gonzalo, J.
Plaza, L.
Anaya Sánchez, H.
Title
Automatic detection of influencers in social networks : authority versus domain signals
Source
Journal of the Association for Information Science and Technology. 70(2019) no.7, S.675-684
Year
2019
Abstract
Given the task of finding influencers (opinion makers) for a given domain in a social network, we investigate (a) what is the relative importance of domain and authority signals, (b) what is the most effective way of combining signals (voting, classification, learning to rank, etc.) and how best to model the vocabulary signal, and (c) how large is the gap between supervised and unsupervised methods and what are the practical consequences. Our best results on the RepLab dataset (which improves the state of the art) uses language models to learn the domain-specific vocabulary used by influencers and combines domain and authority models using a Learning to Rank algorithm. Our experiments show that (a) both authority and domain evidence can be trained from the vocabulary of influencers; (b) once the language of influencers is modeled as a likelihood signal, further supervised learning and additional network-based signals only provide marginal improvements; and (c) the availability of training data sets is crucial to obtain competitive results in the task. Our most remarkable finding is that influencers do use a distinctive vocabulary, which is a more reliable signal than nontextual network indicators such as the number of followers, retweets, and so on.
Content
Vgl.: https://onlinelibrary.wiley.com/doi/10.1002/asi.24156.
Theme
Internet

Similar documents (author)

  1. Sánchez, R. Rodríguez -> Rodríguez-Sánchez, R.: 2.78
    2.7794561 = sum of:
      2.7794561 = product of:
        4.169184 = sum of:
          1.893453 = weight(author_txt:rodríguez in 2502) [ClassicSimilarity], result of:
            1.893453 = score(doc=2502,freq=2.0), product of:
              0.46004277 = queryWeight, product of:
                7.760864 = idf(docFreq=48, maxDocs=42306)
                0.059277266 = queryNorm
              4.1158195 = fieldWeight in 2502, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.760864 = idf(docFreq=48, maxDocs=42306)
                0.375 = fieldNorm(doc=2502)
          2.275731 = weight(author_txt:sánchez in 2502) [ClassicSimilarity], result of:
            2.275731 = score(doc=2502,freq=2.0), product of:
              0.5200469 = queryWeight, product of:
                1.0632175 = boost
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.059277266 = queryNorm
              4.3760114 = fieldWeight in 2502, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.375 = fieldNorm(doc=2502)
        0.6666667 = coord(2/3)
    
  2. García, J.A.; Rodríguez-Sánchez, R.; Fdez-Valdivia, J.; Robinson-García, N.; Torres-Salinas, D.: Mapping academic institutions according to their journal publication profile : Spanish universities as a case study (2012) 1.31
    1.3102483 = sum of:
      1.3102483 = product of:
        1.9653723 = sum of:
          0.8925823 = weight(author_txt:rodríguez in 2501) [ClassicSimilarity], result of:
            0.8925823 = score(doc=2501,freq=1.0), product of:
              0.46004277 = queryWeight, product of:
                7.760864 = idf(docFreq=48, maxDocs=42306)
                0.059277266 = queryNorm
              1.940216 = fieldWeight in 2501, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.760864 = idf(docFreq=48, maxDocs=42306)
                0.25 = fieldNorm(doc=2501)
          1.07279 = weight(author_txt:sánchez in 2501) [ClassicSimilarity], result of:
            1.07279 = score(doc=2501,freq=1.0), product of:
              0.5200469 = queryWeight, product of:
                1.0632175 = boost
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.059277266 = queryNorm
              2.0628717 = fieldWeight in 2501, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.25 = fieldNorm(doc=2501)
        0.6666667 = coord(2/3)
    
  3. Aamodt, A.; Plaza, E.: Case-based reasoning : foundation issues, methodological variations, and systems approaches (1994) 1.16
    1.1642644 = sum of:
      1.1642644 = product of:
        3.4927933 = sum of:
          3.4927933 = weight(author_txt:plaza in 4570) [ClassicSimilarity], result of:
            3.4927933 = score(doc=4570,freq=1.0), product of:
              0.719661 = queryWeight, product of:
                1.2507337 = boost
                9.706774 = idf(docFreq=6, maxDocs=42306)
                0.059277266 = queryNorm
              4.853387 = fieldWeight in 4570, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.706774 = idf(docFreq=6, maxDocs=42306)
                0.5 = fieldNorm(doc=4570)
        0.33333334 = coord(1/3)
    
  4. Mataras, R.L.D.; Plaza, E.: Case-based reasoning : an overview (1997) 1.16
    1.1642644 = sum of:
      1.1642644 = product of:
        3.4927933 = sum of:
          3.4927933 = weight(author_txt:plaza in 1437) [ClassicSimilarity], result of:
            3.4927933 = score(doc=1437,freq=1.0), product of:
              0.719661 = queryWeight, product of:
                1.2507337 = boost
                9.706774 = idf(docFreq=6, maxDocs=42306)
                0.059277266 = queryNorm
              4.853387 = fieldWeight in 1437, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.706774 = idf(docFreq=6, maxDocs=42306)
                0.5 = fieldNorm(doc=1437)
        0.33333334 = coord(1/3)
    
  5. Sánchez, M.F.: Semantically enhanced Information Retrieval : an ontology-based approach (2006) 0.89
    0.8939917 = sum of:
      0.8939917 = product of:
        2.6819751 = sum of:
          2.6819751 = weight(author_txt:sánchez in 1328) [ClassicSimilarity], result of:
            2.6819751 = score(doc=1328,freq=1.0), product of:
              0.5200469 = queryWeight, product of:
                1.0632175 = boost
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.059277266 = queryNorm
              5.1571794 = fieldWeight in 1328, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.251487 = idf(docFreq=29, maxDocs=42306)
                0.625 = fieldNorm(doc=1328)
        0.33333334 = coord(1/3)
    

Similar documents (content)

  1. Cruz Díaz, N.P.; Maña López, M.J.; Mata Vázquez, J.; Pachón Álvarez, V.: ¬A machine-learning approach to negation and speculation detection in clinical texts (2012) 0.27
    0.26759437 = sum of:
      0.26759437 = product of:
        0.95569414 = sum of:
          0.015399575 = weight(abstract_txt:most in 2284) [ClassicSimilarity], result of:
            0.015399575 = score(doc=2284,freq=1.0), product of:
              0.062067825 = queryWeight, product of:
                1.0230153 = boost
                3.969741 = idf(docFreq=2170, maxDocs=42306)
                0.015283479 = queryNorm
              0.24810882 = fieldWeight in 2284, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.969741 = idf(docFreq=2170, maxDocs=42306)
                0.0625 = fieldNorm(doc=2284)
          0.018211192 = weight(abstract_txt:language in 2284) [ClassicSimilarity], result of:
            0.018211192 = score(doc=2284,freq=1.0), product of:
              0.06940961 = queryWeight, product of:
                1.0818291 = boost
                4.197964 = idf(docFreq=1727, maxDocs=42306)
                0.015283479 = queryNorm
              0.26237276 = fieldWeight in 2284, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.197964 = idf(docFreq=1727, maxDocs=42306)
                0.0625 = fieldNorm(doc=2284)
          0.0421791 = weight(abstract_txt:task in 2284) [ClassicSimilarity], result of:
            0.0421791 = score(doc=2284,freq=2.0), product of:
              0.09643816 = queryWeight, product of:
                1.2751853 = boost
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.015283479 = queryNorm
              0.43736938 = fieldWeight in 2284, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.0625 = fieldNorm(doc=2284)
          0.04109744 = weight(abstract_txt:finding in 2284) [ClassicSimilarity], result of:
            0.04109744 = score(doc=2284,freq=1.0), product of:
              0.11941821 = queryWeight, product of:
                1.4190056 = boost
                5.506355 = idf(docFreq=466, maxDocs=42306)
                0.015283479 = queryNorm
              0.34414718 = fieldWeight in 2284, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.506355 = idf(docFreq=466, maxDocs=42306)
                0.0625 = fieldNorm(doc=2284)
          0.05838396 = weight(abstract_txt:learning in 2284) [ClassicSimilarity], result of:
            0.05838396 = score(doc=2284,freq=2.0), product of:
              0.13711244 = queryWeight, product of:
                1.8622282 = boost
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.015283479 = queryNorm
              0.4258108 = fieldWeight in 2284, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.0625 = fieldNorm(doc=2284)
          0.26887774 = weight(abstract_txt:signal in 2284) [ClassicSimilarity], result of:
            0.26887774 = score(doc=2284,freq=2.0), product of:
              0.3795343 = queryWeight, product of:
                3.0982752 = boost
                8.015098 = idf(docFreq=37, maxDocs=42306)
                0.015283479 = queryNorm
              0.7084412 = fieldWeight in 2284, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.015098 = idf(docFreq=37, maxDocs=42306)
                0.0625 = fieldNorm(doc=2284)
          0.5115451 = weight(abstract_txt:signals in 2284) [ClassicSimilarity], result of:
            0.5115451 = score(doc=2284,freq=3.0), product of:
              0.5602987 = queryWeight, product of:
                4.34684 = boost
                8.433808 = idf(docFreq=24, maxDocs=42306)
                0.015283479 = queryNorm
              0.9129865 = fieldWeight in 2284, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                8.433808 = idf(docFreq=24, maxDocs=42306)
                0.0625 = fieldNorm(doc=2284)
        0.28 = coord(7/25)
    
  2. Zaring, P.A.: From signals to knowledge : pragmatic views on the information concept (1996) 0.11
    0.107147865 = sum of:
      0.107147865 = product of:
        0.66967416 = sum of:
          0.024667362 = weight(abstract_txt:social in 819) [ClassicSimilarity], result of:
            0.024667362 = score(doc=819,freq=1.0), product of:
              0.07322665 = queryWeight, product of:
                1.1111776 = boost
                4.3118486 = idf(docFreq=1541, maxDocs=42306)
                0.015283479 = queryNorm
              0.33686316 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3118486 = idf(docFreq=1541, maxDocs=42306)
                0.078125 = fieldNorm(doc=819)
          0.038174294 = weight(abstract_txt:what in 819) [ClassicSimilarity], result of:
            0.038174294 = score(doc=819,freq=1.0), product of:
              0.11214979 = queryWeight, product of:
                1.6842002 = boost
                4.3569493 = idf(docFreq=1473, maxDocs=42306)
                0.015283479 = queryNorm
              0.34038666 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3569493 = idf(docFreq=1473, maxDocs=42306)
                0.078125 = fieldNorm(doc=819)
          0.23765661 = weight(abstract_txt:signal in 819) [ClassicSimilarity], result of:
            0.23765661 = score(doc=819,freq=1.0), product of:
              0.3795343 = queryWeight, product of:
                3.0982752 = boost
                8.015098 = idf(docFreq=37, maxDocs=42306)
                0.015283479 = queryNorm
              0.6261795 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.015098 = idf(docFreq=37, maxDocs=42306)
                0.078125 = fieldNorm(doc=819)
          0.3691759 = weight(abstract_txt:signals in 819) [ClassicSimilarity], result of:
            0.3691759 = score(doc=819,freq=1.0), product of:
              0.5602987 = queryWeight, product of:
                4.34684 = boost
                8.433808 = idf(docFreq=24, maxDocs=42306)
                0.015283479 = queryNorm
              0.65889126 = fieldWeight in 819, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.433808 = idf(docFreq=24, maxDocs=42306)
                0.078125 = fieldNorm(doc=819)
        0.16 = coord(4/25)
    
  3. HaCohen-Kerner, Y.; Kass, A.; Peretz, A.: Initialism disambiguation : man versus machine (2013) 0.10
    0.10162372 = sum of:
      0.10162372 = product of:
        0.36294186 = sum of:
          0.018211192 = weight(abstract_txt:language in 3095) [ClassicSimilarity], result of:
            0.018211192 = score(doc=3095,freq=1.0), product of:
              0.06940961 = queryWeight, product of:
                1.0818291 = boost
                4.197964 = idf(docFreq=1727, maxDocs=42306)
                0.015283479 = queryNorm
              0.26237276 = fieldWeight in 3095, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.197964 = idf(docFreq=1727, maxDocs=42306)
                0.0625 = fieldNorm(doc=3095)
          0.025792975 = weight(abstract_txt:given in 3095) [ClassicSimilarity], result of:
            0.025792975 = score(doc=3095,freq=1.0), product of:
              0.087537676 = queryWeight, product of:
                1.2149162 = boost
                4.7144 = idf(docFreq=1030, maxDocs=42306)
                0.015283479 = queryNorm
              0.29465 = fieldWeight in 3095, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7144 = idf(docFreq=1030, maxDocs=42306)
                0.0625 = fieldNorm(doc=3095)
          0.029825129 = weight(abstract_txt:task in 3095) [ClassicSimilarity], result of:
            0.029825129 = score(doc=3095,freq=1.0), product of:
              0.09643816 = queryWeight, product of:
                1.2751853 = boost
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.015283479 = queryNorm
              0.30926687 = fieldWeight in 3095, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.0625 = fieldNorm(doc=3095)
          0.044945695 = weight(abstract_txt:best in 3095) [ClassicSimilarity], result of:
            0.044945695 = score(doc=3095,freq=2.0), product of:
              0.100610375 = queryWeight, product of:
                1.3024775 = boost
                5.0541754 = idf(docFreq=733, maxDocs=42306)
                0.015283479 = queryNorm
              0.4467302 = fieldWeight in 3095, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.0541754 = idf(docFreq=733, maxDocs=42306)
                0.0625 = fieldNorm(doc=3095)
          0.04109744 = weight(abstract_txt:finding in 3095) [ClassicSimilarity], result of:
            0.04109744 = score(doc=3095,freq=1.0), product of:
              0.11941821 = queryWeight, product of:
                1.4190056 = boost
                5.506355 = idf(docFreq=466, maxDocs=42306)
                0.015283479 = queryNorm
              0.34414718 = fieldWeight in 3095, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.506355 = idf(docFreq=466, maxDocs=42306)
                0.0625 = fieldNorm(doc=3095)
          0.041283697 = weight(abstract_txt:learning in 3095) [ClassicSimilarity], result of:
            0.041283697 = score(doc=3095,freq=1.0), product of:
              0.13711244 = queryWeight, product of:
                1.8622282 = boost
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.015283479 = queryNorm
              0.30109373 = fieldWeight in 3095, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.0625 = fieldNorm(doc=3095)
          0.16178575 = weight(abstract_txt:domain in 3095) [ClassicSimilarity], result of:
            0.16178575 = score(doc=3095,freq=4.0), product of:
              0.2705046 = queryWeight, product of:
                3.6991062 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.015283479 = queryNorm
              0.59808874 = fieldWeight in 3095, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.0625 = fieldNorm(doc=3095)
        0.28 = coord(7/25)
    
  4. Franceschini, F.; Maisano, D.; Mastrogiacomo, L.: ¬A novel approach for estimating the omitted-citation rate of bibliometric databases with an application to the field of bibliometrics (2013) 0.10
    0.10162372 = sum of:
      0.10162372 = product of:
        0.36294186 = sum of:
          0.018211192 = weight(abstract_txt:language in 3098) [ClassicSimilarity], result of:
            0.018211192 = score(doc=3098,freq=1.0), product of:
              0.06940961 = queryWeight, product of:
                1.0818291 = boost
                4.197964 = idf(docFreq=1727, maxDocs=42306)
                0.015283479 = queryNorm
              0.26237276 = fieldWeight in 3098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.197964 = idf(docFreq=1727, maxDocs=42306)
                0.0625 = fieldNorm(doc=3098)
          0.025792975 = weight(abstract_txt:given in 3098) [ClassicSimilarity], result of:
            0.025792975 = score(doc=3098,freq=1.0), product of:
              0.087537676 = queryWeight, product of:
                1.2149162 = boost
                4.7144 = idf(docFreq=1030, maxDocs=42306)
                0.015283479 = queryNorm
              0.29465 = fieldWeight in 3098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7144 = idf(docFreq=1030, maxDocs=42306)
                0.0625 = fieldNorm(doc=3098)
          0.029825129 = weight(abstract_txt:task in 3098) [ClassicSimilarity], result of:
            0.029825129 = score(doc=3098,freq=1.0), product of:
              0.09643816 = queryWeight, product of:
                1.2751853 = boost
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.015283479 = queryNorm
              0.30926687 = fieldWeight in 3098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.0625 = fieldNorm(doc=3098)
          0.044945695 = weight(abstract_txt:best in 3098) [ClassicSimilarity], result of:
            0.044945695 = score(doc=3098,freq=2.0), product of:
              0.100610375 = queryWeight, product of:
                1.3024775 = boost
                5.0541754 = idf(docFreq=733, maxDocs=42306)
                0.015283479 = queryNorm
              0.4467302 = fieldWeight in 3098, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.0541754 = idf(docFreq=733, maxDocs=42306)
                0.0625 = fieldNorm(doc=3098)
          0.04109744 = weight(abstract_txt:finding in 3098) [ClassicSimilarity], result of:
            0.04109744 = score(doc=3098,freq=1.0), product of:
              0.11941821 = queryWeight, product of:
                1.4190056 = boost
                5.506355 = idf(docFreq=466, maxDocs=42306)
                0.015283479 = queryNorm
              0.34414718 = fieldWeight in 3098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.506355 = idf(docFreq=466, maxDocs=42306)
                0.0625 = fieldNorm(doc=3098)
          0.041283697 = weight(abstract_txt:learning in 3098) [ClassicSimilarity], result of:
            0.041283697 = score(doc=3098,freq=1.0), product of:
              0.13711244 = queryWeight, product of:
                1.8622282 = boost
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.015283479 = queryNorm
              0.30109373 = fieldWeight in 3098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.0625 = fieldNorm(doc=3098)
          0.16178575 = weight(abstract_txt:domain in 3098) [ClassicSimilarity], result of:
            0.16178575 = score(doc=3098,freq=4.0), product of:
              0.2705046 = queryWeight, product of:
                3.6991062 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.015283479 = queryNorm
              0.59808874 = fieldWeight in 3098, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.0625 = fieldNorm(doc=3098)
        0.28 = coord(7/25)
    
  5. Kolluri, V.; Metzler, D.P.: Knowledge guided rule learning (1999) 0.10
    0.09662597 = sum of:
      0.09662597 = product of:
        0.34509274 = sum of:
          0.011549681 = weight(abstract_txt:most in 551) [ClassicSimilarity], result of:
            0.011549681 = score(doc=551,freq=1.0), product of:
              0.062067825 = queryWeight, product of:
                1.0230153 = boost
                3.969741 = idf(docFreq=2170, maxDocs=42306)
                0.015283479 = queryNorm
              0.18608162 = fieldWeight in 551, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.969741 = idf(docFreq=2170, maxDocs=42306)
                0.046875 = fieldNorm(doc=551)
          0.019344732 = weight(abstract_txt:given in 551) [ClassicSimilarity], result of:
            0.019344732 = score(doc=551,freq=1.0), product of:
              0.087537676 = queryWeight, product of:
                1.2149162 = boost
                4.7144 = idf(docFreq=1030, maxDocs=42306)
                0.015283479 = queryNorm
              0.2209875 = fieldWeight in 551, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7144 = idf(docFreq=1030, maxDocs=42306)
                0.046875 = fieldNorm(doc=551)
          0.022368846 = weight(abstract_txt:task in 551) [ClassicSimilarity], result of:
            0.022368846 = score(doc=551,freq=1.0), product of:
              0.09643816 = queryWeight, product of:
                1.2751853 = boost
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.015283479 = queryNorm
              0.23195015 = fieldWeight in 551, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.046875 = fieldNorm(doc=551)
          0.022904577 = weight(abstract_txt:what in 551) [ClassicSimilarity], result of:
            0.022904577 = score(doc=551,freq=1.0), product of:
              0.11214979 = queryWeight, product of:
                1.6842002 = boost
                4.3569493 = idf(docFreq=1473, maxDocs=42306)
                0.015283479 = queryNorm
              0.204232 = fieldWeight in 551, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3569493 = idf(docFreq=1473, maxDocs=42306)
                0.046875 = fieldNorm(doc=551)
          0.08191979 = weight(abstract_txt:learning in 551) [ClassicSimilarity], result of:
            0.08191979 = score(doc=551,freq=7.0), product of:
              0.13711244 = queryWeight, product of:
                1.8622282 = boost
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.015283479 = queryNorm
              0.5974643 = fieldWeight in 551, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.8174996 = idf(docFreq=929, maxDocs=42306)
                0.046875 = fieldNorm(doc=551)
          0.08192218 = weight(abstract_txt:supervised in 551) [ClassicSimilarity], result of:
            0.08192218 = score(doc=551,freq=1.0), product of:
              0.22913295 = queryWeight, product of:
                1.9655886 = boost
                7.6273327 = idf(docFreq=55, maxDocs=42306)
                0.015283479 = queryNorm
              0.35753122 = fieldWeight in 551, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.6273327 = idf(docFreq=55, maxDocs=42306)
                0.046875 = fieldNorm(doc=551)
          0.10508292 = weight(abstract_txt:domain in 551) [ClassicSimilarity], result of:
            0.10508292 = score(doc=551,freq=3.0), product of:
              0.2705046 = queryWeight, product of:
                3.6991062 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.015283479 = queryNorm
              0.38847 = fieldWeight in 551, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.046875 = fieldNorm(doc=551)
        0.28 = coord(7/25)