Document (#41306)

Author
Joo, S.
Choi, I.
Choi, N.
Title
Topic analysis of the research domain in knowledge organization : a Latent Dirichlet Allocation approach
Source
Knowledge organization. 45(2018) no.2, S.170-183
Year
2018
Abstract
Based on text mining, this study explored topics in the research domain of knowledge organization. A text corpus consisting of titles and abstracts was generated from 282 articles of the Knowledge Organization journal for the recent ten years from 2006 to 2015. Term frequency analysis and Latent Dirichlet allocation topic modeling were employed to analyze the collected corpus. Topic modeling uncovered twenty research topics prevailing in the knowledge organization field, including theories and epistemology, classification scheme, domain analysis and ontology, digital archiving, document indexing and retrieval, taxonomy and thesaurus system, metadata and controlled vocabulary, ethical issues, and others. In addition, topic trends over the tenyears were examined to identify topics that attracted more discussion in the journal. The top two topics that received increased attention recently were "ethical issues in knowledge organization" and "domain analysis and ontologies." This study yields insight into a better understanding of the research domain of knowledge organization. Moreover, text mining approaches introduced in this study have methodological implications for domain analysis in knowledge organization.

Similar documents (author)

  1. Choi, Y.: Effects of contextual factors on image searching on the Web (2010) 5.18
    5.1783676 = sum of:
      5.1783676 = weight(author_txt:choi in 996) [ClassicSimilarity], result of:
        5.1783676 = fieldWeight in 996, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.285388 = idf(docFreq=28, maxDocs=42306)
          0.625 = fieldNorm(doc=996)
    
  2. Choi, Y.: ¬A Practical application of FRBR for organizing information in digital environments (2012) 5.18
    5.1783676 = sum of:
      5.1783676 = weight(author_txt:choi in 2320) [ClassicSimilarity], result of:
        5.1783676 = fieldWeight in 2320, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.285388 = idf(docFreq=28, maxDocs=42306)
          0.625 = fieldNorm(doc=2320)
    
  3. Choi, Y.: Analysis of image search queries on the web : query modification patterns and semantic attributes (2013) 5.18
    5.1783676 = sum of:
      5.1783676 = weight(author_txt:choi in 2970) [ClassicSimilarity], result of:
        5.1783676 = fieldWeight in 2970, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.285388 = idf(docFreq=28, maxDocs=42306)
          0.625 = fieldNorm(doc=2970)
    
  4. Choi, N.: Information systems attachment : an empirical exploration of its antecedents and its impact on community participation intention (2013) 5.18
    5.1783676 = sum of:
      5.1783676 = weight(author_txt:choi in 3115) [ClassicSimilarity], result of:
        5.1783676 = fieldWeight in 3115, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.285388 = idf(docFreq=28, maxDocs=42306)
          0.625 = fieldNorm(doc=3115)
    
  5. Choi, Y.: ¬A complete assessment of tagging quality : a consolidated methodology (2015) 5.18
    5.1783676 = sum of:
      5.1783676 = weight(author_txt:choi in 3731) [ClassicSimilarity], result of:
        5.1783676 = fieldWeight in 3731, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.285388 = idf(docFreq=28, maxDocs=42306)
          0.625 = fieldNorm(doc=3731)
    

Similar documents (content)

  1. Hu, B.; Dong, X.; Zhang, C.; Bowman, T.D.; Ding, Y.; Milojevic, S.; Ni, C.; Yan, E.; Larivière, V.: ¬A lead-lag analysis of the topic evolution patterns for preprints and publications (2015) 0.45
    0.4523084 = sum of:
      0.4523084 = product of:
        1.1307709 = sum of:
          0.011696481 = weight(abstract_txt:this in 4338) [ClassicSimilarity], result of:
            0.011696481 = score(doc=4338,freq=2.0), product of:
              0.043132234 = queryWeight, product of:
                1.0038246 = boost
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.01750636 = queryNorm
              0.27117726 = fieldWeight in 4338, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.023688307 = weight(abstract_txt:study in 4338) [ClassicSimilarity], result of:
            0.023688307 = score(doc=4338,freq=1.0), product of:
              0.08698902 = queryWeight, product of:
                1.4255717 = boost
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.01750636 = queryNorm
              0.27231374 = fieldWeight in 4338, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.040129118 = weight(abstract_txt:were in 4338) [ClassicSimilarity], result of:
            0.040129118 = score(doc=4338,freq=2.0), product of:
              0.09811562 = queryWeight, product of:
                1.5140002 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.01750636 = queryNorm
              0.40899825 = fieldWeight in 4338, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.12997839 = weight(abstract_txt:latent in 4338) [ClassicSimilarity], result of:
            0.12997839 = score(doc=4338,freq=1.0), product of:
              0.23640615 = queryWeight, product of:
                1.9188482 = boost
                7.037564 = idf(docFreq=100, maxDocs=42306)
                0.01750636 = queryNorm
              0.5498097 = fieldWeight in 4338, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.037564 = idf(docFreq=100, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.1690805 = weight(abstract_txt:allocation in 4338) [ClassicSimilarity], result of:
            0.1690805 = score(doc=4338,freq=1.0), product of:
              0.28171307 = queryWeight, product of:
                2.0946658 = boost
                7.682392 = idf(docFreq=52, maxDocs=42306)
                0.01750636 = queryNorm
              0.6001869 = fieldWeight in 4338, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.682392 = idf(docFreq=52, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.22059833 = weight(abstract_txt:dirichlet in 4338) [ClassicSimilarity], result of:
            0.22059833 = score(doc=4338,freq=1.0), product of:
              0.33636656 = queryWeight, product of:
                2.2888515 = boost
                8.3945875 = idf(docFreq=25, maxDocs=42306)
                0.01750636 = queryNorm
              0.65582716 = fieldWeight in 4338, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.3945875 = idf(docFreq=25, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.0667865 = weight(abstract_txt:analysis in 4338) [ClassicSimilarity], result of:
            0.0667865 = score(doc=4338,freq=2.0), product of:
              0.16337056 = queryWeight, product of:
                2.5221338 = boost
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.01750636 = queryNorm
              0.40880376 = fieldWeight in 4338, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.17180882 = weight(abstract_txt:topic in 4338) [ClassicSimilarity], result of:
            0.17180882 = score(doc=4338,freq=3.0), product of:
              0.2487394 = queryWeight, product of:
                2.7835467 = boost
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.01750636 = queryNorm
              0.6907182 = fieldWeight in 4338, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.17446047 = weight(abstract_txt:topics in 4338) [ClassicSimilarity], result of:
            0.17446047 = score(doc=4338,freq=3.0), product of:
              0.25129217 = queryWeight, product of:
                2.7977939 = boost
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.01750636 = queryNorm
              0.6942535 = fieldWeight in 4338, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
          0.12254405 = weight(abstract_txt:domain in 4338) [ClassicSimilarity], result of:
            0.12254405 = score(doc=4338,freq=1.0), product of:
              0.3278284 = queryWeight, product of:
                3.9137685 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.01750636 = queryNorm
              0.37380546 = fieldWeight in 4338, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.078125 = fieldNorm(doc=4338)
        0.4 = coord(10/25)
    
  2. Smiraglia, R.P.: ¬The elements of knowledge organization (2014) 0.39
    0.38701198 = sum of:
      0.38701198 = product of:
        0.8795727 = sum of:
          0.011578927 = weight(abstract_txt:this in 3514) [ClassicSimilarity], result of:
            0.011578927 = score(doc=3514,freq=4.0), product of:
              0.043132234 = queryWeight, product of:
                1.0038246 = boost
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.01750636 = queryNorm
              0.2684518 = fieldWeight in 3514, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.036452405 = weight(abstract_txt:journal in 3514) [ClassicSimilarity], result of:
            0.036452405 = score(doc=3514,freq=1.0), product of:
              0.1284784 = queryWeight, product of:
                1.4145759 = boost
                5.188096 = idf(docFreq=641, maxDocs=42306)
                0.01750636 = queryNorm
              0.283724 = fieldWeight in 3514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.188096 = idf(docFreq=641, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.016581815 = weight(abstract_txt:study in 3514) [ClassicSimilarity], result of:
            0.016581815 = score(doc=3514,freq=1.0), product of:
              0.08698902 = queryWeight, product of:
                1.4255717 = boost
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.01750636 = queryNorm
              0.19061962 = fieldWeight in 3514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.0368338 = weight(abstract_txt:text in 3514) [ClassicSimilarity], result of:
            0.0368338 = score(doc=3514,freq=2.0), product of:
              0.117543176 = queryWeight, product of:
                1.6571261 = boost
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.01750636 = queryNorm
              0.313364 = fieldWeight in 3514, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.06305106 = weight(abstract_txt:mining in 3514) [ClassicSimilarity], result of:
            0.06305106 = score(doc=3514,freq=1.0), product of:
              0.18512891 = queryWeight, product of:
                1.6980417 = boost
                6.227734 = idf(docFreq=226, maxDocs=42306)
                0.01750636 = queryNorm
              0.3405792 = fieldWeight in 3514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.227734 = idf(docFreq=226, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.017561067 = weight(abstract_txt:research in 3514) [ClassicSimilarity], result of:
            0.017561067 = score(doc=3514,freq=1.0), product of:
              0.09947713 = queryWeight, product of:
                1.7603047 = boost
                3.228045 = idf(docFreq=4557, maxDocs=42306)
                0.01750636 = queryNorm
              0.17653371 = fieldWeight in 3514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.228045 = idf(docFreq=4557, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.03305763 = weight(abstract_txt:analysis in 3514) [ClassicSimilarity], result of:
            0.03305763 = score(doc=3514,freq=1.0), product of:
              0.16337056 = queryWeight, product of:
                2.5221338 = boost
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.01750636 = queryNorm
              0.20234753 = fieldWeight in 3514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.070507355 = weight(abstract_txt:topics in 3514) [ClassicSimilarity], result of:
            0.070507355 = score(doc=3514,freq=1.0), product of:
              0.25129217 = queryWeight, product of:
                2.7977939 = boost
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.01750636 = queryNorm
              0.2805792 = fieldWeight in 3514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.13516244 = weight(abstract_txt:knowledge in 3514) [ClassicSimilarity], result of:
            0.13516244 = score(doc=3514,freq=10.0), product of:
              0.21690656 = queryWeight, product of:
                3.4385996 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.01750636 = queryNorm
              0.6231367 = fieldWeight in 3514, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.19181177 = weight(abstract_txt:domain in 3514) [ClassicSimilarity], result of:
            0.19181177 = score(doc=3514,freq=5.0), product of:
              0.3278284 = queryWeight, product of:
                3.9137685 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.01750636 = queryNorm
              0.5850981 = fieldWeight in 3514, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
          0.2669744 = weight(abstract_txt:organization in 3514) [ClassicSimilarity], result of:
            0.2669744 = score(doc=3514,freq=10.0), product of:
              0.34146675 = queryWeight, product of:
                4.3143907 = boost
                4.5209856 = idf(docFreq=1250, maxDocs=42306)
                0.01750636 = queryNorm
              0.7818459 = fieldWeight in 3514, product of:
                3.1622777 = tf(freq=10.0), with freq of:
                  10.0 = termFreq=10.0
                4.5209856 = idf(docFreq=1250, maxDocs=42306)
                0.0546875 = fieldNorm(doc=3514)
        0.44 = coord(11/25)
    
  3. Lu, K.; Wolfram, D.: Measuring author research relatedness : a comparison of word-based, topic-based, and author cocitation approaches (2012) 0.37
    0.3674887 = sum of:
      0.3674887 = product of:
        0.8352016 = sum of:
          0.006616529 = weight(abstract_txt:this in 2454) [ClassicSimilarity], result of:
            0.006616529 = score(doc=2454,freq=1.0), product of:
              0.043132234 = queryWeight, product of:
                1.0038246 = boost
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.01750636 = queryNorm
              0.15340103 = fieldWeight in 2454, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.03282348 = weight(abstract_txt:study in 2454) [ClassicSimilarity], result of:
            0.03282348 = score(doc=2454,freq=3.0), product of:
              0.08698902 = queryWeight, product of:
                1.4255717 = boost
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.01750636 = queryNorm
              0.377329 = fieldWeight in 2454, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.022700457 = weight(abstract_txt:were in 2454) [ClassicSimilarity], result of:
            0.022700457 = score(doc=2454,freq=1.0), product of:
              0.09811562 = queryWeight, product of:
                1.5140002 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.01750636 = queryNorm
              0.23136434 = fieldWeight in 2454, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.029766206 = weight(abstract_txt:text in 2454) [ClassicSimilarity], result of:
            0.029766206 = score(doc=2454,freq=1.0), product of:
              0.117543176 = queryWeight, product of:
                1.6571261 = boost
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.01750636 = queryNorm
              0.25323635 = fieldWeight in 2454, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0517817 = idf(docFreq=1999, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.09630207 = weight(abstract_txt:modeling in 2454) [ClassicSimilarity], result of:
            0.09630207 = score(doc=2454,freq=2.0), product of:
              0.17827828 = queryWeight, product of:
                1.6663278 = boost
                6.1114206 = idf(docFreq=254, maxDocs=42306)
                0.01750636 = queryNorm
              0.54017836 = fieldWeight in 2454, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.1114206 = idf(docFreq=254, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.02838297 = weight(abstract_txt:research in 2454) [ClassicSimilarity], result of:
            0.02838297 = score(doc=2454,freq=2.0), product of:
              0.09947713 = queryWeight, product of:
                1.7603047 = boost
                3.228045 = idf(docFreq=4557, maxDocs=42306)
                0.01750636 = queryNorm
              0.28532156 = fieldWeight in 2454, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.228045 = idf(docFreq=4557, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.10398271 = weight(abstract_txt:latent in 2454) [ClassicSimilarity], result of:
            0.10398271 = score(doc=2454,freq=1.0), product of:
              0.23640615 = queryWeight, product of:
                1.9188482 = boost
                7.037564 = idf(docFreq=100, maxDocs=42306)
                0.01750636 = queryNorm
              0.43984774 = fieldWeight in 2454, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.037564 = idf(docFreq=100, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.1352644 = weight(abstract_txt:allocation in 2454) [ClassicSimilarity], result of:
            0.1352644 = score(doc=2454,freq=1.0), product of:
              0.28171307 = queryWeight, product of:
                2.0946658 = boost
                7.682392 = idf(docFreq=52, maxDocs=42306)
                0.01750636 = queryNorm
              0.4801495 = fieldWeight in 2454, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.682392 = idf(docFreq=52, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.17647865 = weight(abstract_txt:dirichlet in 2454) [ClassicSimilarity], result of:
            0.17647865 = score(doc=2454,freq=1.0), product of:
              0.33636656 = queryWeight, product of:
                2.2888515 = boost
                8.3945875 = idf(docFreq=25, maxDocs=42306)
                0.01750636 = queryNorm
              0.5246617 = fieldWeight in 2454, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.3945875 = idf(docFreq=25, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.06543714 = weight(abstract_txt:analysis in 2454) [ClassicSimilarity], result of:
            0.06543714 = score(doc=2454,freq=3.0), product of:
              0.16337056 = queryWeight, product of:
                2.5221338 = boost
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.01750636 = queryNorm
              0.40054423 = fieldWeight in 2454, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
          0.13744706 = weight(abstract_txt:topic in 2454) [ClassicSimilarity], result of:
            0.13744706 = score(doc=2454,freq=3.0), product of:
              0.2487394 = queryWeight, product of:
                2.7835467 = boost
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.01750636 = queryNorm
              0.5525745 = fieldWeight in 2454, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.0625 = fieldNorm(doc=2454)
        0.44 = coord(11/25)
    
  4. Café, L.M.A.; Souza, R.R.: Sentiment analysis and knowledge organization : an overview of the international literature (2017) 0.36
    0.3591694 = sum of:
      0.3591694 = product of:
        0.74826956 = sum of:
          0.009357185 = weight(abstract_txt:this in 544) [ClassicSimilarity], result of:
            0.009357185 = score(doc=544,freq=2.0), product of:
              0.043132234 = queryWeight, product of:
                1.0038246 = boost
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.01750636 = queryNorm
              0.21694182 = fieldWeight in 544, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.04165989 = weight(abstract_txt:journal in 544) [ClassicSimilarity], result of:
            0.04165989 = score(doc=544,freq=1.0), product of:
              0.1284784 = queryWeight, product of:
                1.4145759 = boost
                5.188096 = idf(docFreq=641, maxDocs=42306)
                0.01750636 = queryNorm
              0.324256 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.188096 = idf(docFreq=641, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.018950645 = weight(abstract_txt:study in 544) [ClassicSimilarity], result of:
            0.018950645 = score(doc=544,freq=1.0), product of:
              0.08698902 = queryWeight, product of:
                1.4255717 = boost
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.01750636 = queryNorm
              0.217851 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.485616 = idf(docFreq=3522, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.022700457 = weight(abstract_txt:were in 544) [ClassicSimilarity], result of:
            0.022700457 = score(doc=544,freq=1.0), product of:
              0.09811562 = queryWeight, product of:
                1.5140002 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.01750636 = queryNorm
              0.23136434 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.06809585 = weight(abstract_txt:modeling in 544) [ClassicSimilarity], result of:
            0.06809585 = score(doc=544,freq=1.0), product of:
              0.17827828 = queryWeight, product of:
                1.6663278 = boost
                6.1114206 = idf(docFreq=254, maxDocs=42306)
                0.01750636 = queryNorm
              0.3819638 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1114206 = idf(docFreq=254, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.06889489 = weight(abstract_txt:corpus in 544) [ClassicSimilarity], result of:
            0.06889489 = score(doc=544,freq=1.0), product of:
              0.1796702 = queryWeight, product of:
                1.6728201 = boost
                6.1352315 = idf(docFreq=248, maxDocs=42306)
                0.01750636 = queryNorm
              0.38345197 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1352315 = idf(docFreq=248, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.07205835 = weight(abstract_txt:mining in 544) [ClassicSimilarity], result of:
            0.07205835 = score(doc=544,freq=1.0), product of:
              0.18512891 = queryWeight, product of:
                1.6980417 = boost
                6.227734 = idf(docFreq=226, maxDocs=42306)
                0.01750636 = queryNorm
              0.38923338 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.227734 = idf(docFreq=226, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.020069791 = weight(abstract_txt:research in 544) [ClassicSimilarity], result of:
            0.020069791 = score(doc=544,freq=1.0), product of:
              0.09947713 = queryWeight, product of:
                1.7603047 = boost
                3.228045 = idf(docFreq=4557, maxDocs=42306)
                0.01750636 = queryNorm
              0.20175281 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.228045 = idf(docFreq=4557, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.03778015 = weight(abstract_txt:analysis in 544) [ClassicSimilarity], result of:
            0.03778015 = score(doc=544,freq=1.0), product of:
              0.16337056 = queryWeight, product of:
                2.5221338 = boost
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.01750636 = queryNorm
              0.23125432 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.09769627 = weight(abstract_txt:knowledge in 544) [ClassicSimilarity], result of:
            0.09769627 = score(doc=544,freq=4.0), product of:
              0.21690656 = queryWeight, product of:
                3.4385996 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.01750636 = queryNorm
              0.45040715 = fieldWeight in 544, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.09803524 = weight(abstract_txt:domain in 544) [ClassicSimilarity], result of:
            0.09803524 = score(doc=544,freq=1.0), product of:
              0.3278284 = queryWeight, product of:
                3.9137685 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.01750636 = queryNorm
              0.29904437 = fieldWeight in 544, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
          0.19297078 = weight(abstract_txt:organization in 544) [ClassicSimilarity], result of:
            0.19297078 = score(doc=544,freq=4.0), product of:
              0.34146675 = queryWeight, product of:
                4.3143907 = boost
                4.5209856 = idf(docFreq=1250, maxDocs=42306)
                0.01750636 = queryNorm
              0.5651232 = fieldWeight in 544, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.5209856 = idf(docFreq=1250, maxDocs=42306)
                0.0625 = fieldNorm(doc=544)
        0.48 = coord(12/25)
    
  5. Li, X.; Zhang, A.; Li, C.; Ouyang, J.; Cai, Y.: Exploring coherent topics by topic modeling with term weighting (2018) 0.33
    0.32720006 = sum of:
      0.32720006 = product of:
        1.0225002 = sum of:
          0.009357185 = weight(abstract_txt:this in 1964) [ClassicSimilarity], result of:
            0.009357185 = score(doc=1964,freq=2.0), product of:
              0.043132234 = queryWeight, product of:
                1.0038246 = boost
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.01750636 = queryNorm
              0.21694182 = fieldWeight in 1964, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4544165 = idf(docFreq=9879, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
          0.11794547 = weight(abstract_txt:modeling in 1964) [ClassicSimilarity], result of:
            0.11794547 = score(doc=1964,freq=3.0), product of:
              0.17827828 = queryWeight, product of:
                1.6663278 = boost
                6.1114206 = idf(docFreq=254, maxDocs=42306)
                0.01750636 = queryNorm
              0.6615807 = fieldWeight in 1964, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.1114206 = idf(docFreq=254, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
          0.10398271 = weight(abstract_txt:latent in 1964) [ClassicSimilarity], result of:
            0.10398271 = score(doc=1964,freq=1.0), product of:
              0.23640615 = queryWeight, product of:
                1.9188482 = boost
                7.037564 = idf(docFreq=100, maxDocs=42306)
                0.01750636 = queryNorm
              0.43984774 = fieldWeight in 1964, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.037564 = idf(docFreq=100, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
          0.1352644 = weight(abstract_txt:allocation in 1964) [ClassicSimilarity], result of:
            0.1352644 = score(doc=1964,freq=1.0), product of:
              0.28171307 = queryWeight, product of:
                2.0946658 = boost
                7.682392 = idf(docFreq=52, maxDocs=42306)
                0.01750636 = queryNorm
              0.4801495 = fieldWeight in 1964, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.682392 = idf(docFreq=52, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
          0.2495785 = weight(abstract_txt:dirichlet in 1964) [ClassicSimilarity], result of:
            0.2495785 = score(doc=1964,freq=2.0), product of:
              0.33636656 = queryWeight, product of:
                2.2888515 = boost
                8.3945875 = idf(docFreq=25, maxDocs=42306)
                0.01750636 = queryNorm
              0.7419837 = fieldWeight in 1964, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.3945875 = idf(docFreq=25, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
          0.19437951 = weight(abstract_txt:topic in 1964) [ClassicSimilarity], result of:
            0.19437951 = score(doc=1964,freq=6.0), product of:
              0.2487394 = queryWeight, product of:
                2.7835467 = boost
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.01750636 = queryNorm
              0.78145844 = fieldWeight in 1964, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                5.104465 = idf(docFreq=697, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
          0.1139571 = weight(abstract_txt:topics in 1964) [ClassicSimilarity], result of:
            0.1139571 = score(doc=1964,freq=2.0), product of:
              0.25129217 = queryWeight, product of:
                2.7977939 = boost
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.01750636 = queryNorm
              0.45348448 = fieldWeight in 1964, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
          0.09803524 = weight(abstract_txt:domain in 1964) [ClassicSimilarity], result of:
            0.09803524 = score(doc=1964,freq=1.0), product of:
              0.3278284 = queryWeight, product of:
                3.9137685 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.01750636 = queryNorm
              0.29904437 = fieldWeight in 1964, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.0625 = fieldNorm(doc=1964)
        0.32 = coord(8/25)