Document (#32503)

Author
Huang, Z.
Chung, Z.W.
Chen, H.
Title
¬A graph model for e-commerce recommender systems
Source
Journal of the American Society for Information Science and technology. 55(2004) no.3, S.259-274
Year
2004
Abstract
Information overload on the Web has created enormous challenges to customers selecting products for online purchases and to online businesses attempting to identify customers' preferences efficiently. Various recommender systems employing different data representations and recommendation methods are currently used to address these challenges. In this research, we developed a graph model that provides a generic data representation and can support different recommendation methods. To demonstrate its usefulness and flexibility, we developed three recommendation methods: direct retrieval, association mining, and high-degree association retrieval. We used a data set from an online bookstore as our research test-bed. Evaluation results showed that combining product content information and historical customer transaction information achieved more accurate predictions and relevant recommendations than using only collaborative information. However, comparisons among different methods showed that high-degree association retrieval did not perform significantly better than the association mining method or the direct retrieval method in our test-bed.
Object
Recommender-Systeme

Similar documents (author)

  1. Chung, W.; Zhang, Y.; Huang, Z.; Wang, G.; Ong, T.-H.; Chen, H.: Internet searching and browsing in a multilingual world : an experiment an the Chinese Business Intelligence Portal (CBizPort) (2004) 3.11
    3.1132507 = sum of:
      3.1132507 = sum of:
        0.63043725 = weight(author_txt:chen in 4394) [ClassicSimilarity], result of:
          0.63043725 = score(doc=4394,freq=1.0), product of:
            0.40928075 = queryWeight, product of:
              6.161416 = idf(docFreq=247, maxDocs=43254)
              0.06642641 = queryNorm
            1.540354 = fieldWeight in 4394, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              6.161416 = idf(docFreq=247, maxDocs=43254)
              0.25 = fieldNorm(doc=4394)
        1.0245676 = weight(author_txt:huang in 4394) [ClassicSimilarity], result of:
          1.0245676 = score(doc=4394,freq=1.0), product of:
            0.5657447 = queryWeight, product of:
              1.1757083 = boost
              7.244028 = idf(docFreq=83, maxDocs=43254)
              0.06642641 = queryNorm
            1.811007 = fieldWeight in 4394, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.244028 = idf(docFreq=83, maxDocs=43254)
              0.25 = fieldNorm(doc=4394)
        1.4582459 = weight(author_txt:chung in 4394) [ClassicSimilarity], result of:
          1.4582459 = score(doc=4394,freq=1.0), product of:
            0.71583664 = queryWeight, product of:
              1.3225019 = boost
              8.148484 = idf(docFreq=33, maxDocs=43254)
              0.06642641 = queryNorm
            2.037121 = fieldWeight in 4394, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.148484 = idf(docFreq=33, maxDocs=43254)
              0.25 = fieldNorm(doc=4394)
    
  2. Chung, W.; Chen, H.: Browsing the underdeveloped Web : an experiment on the Arabic Medical Web Directory (2009) 2.78
    2.784911 = sum of:
      2.784911 = product of:
        4.1773663 = sum of:
          1.2608745 = weight(author_txt:chen in 4734) [ClassicSimilarity], result of:
            1.2608745 = score(doc=4734,freq=1.0), product of:
              0.40928075 = queryWeight, product of:
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.06642641 = queryNorm
              3.080708 = fieldWeight in 4734, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.5 = fieldNorm(doc=4734)
          2.9164917 = weight(author_txt:chung in 4734) [ClassicSimilarity], result of:
            2.9164917 = score(doc=4734,freq=1.0), product of:
              0.71583664 = queryWeight, product of:
                1.3225019 = boost
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.06642641 = queryNorm
              4.074242 = fieldWeight in 4734, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.5 = fieldNorm(doc=4734)
        0.6666667 = coord(2/3)
    
  3. Chung, W.; Chen, H.; Reid, E.: Business stakeholder analyzer : an experiment of classifying stakeholders on the Web (2009) 2.09
    2.0886831 = sum of:
      2.0886831 = product of:
        3.1330247 = sum of:
          0.9456559 = weight(author_txt:chen in 4700) [ClassicSimilarity], result of:
            0.9456559 = score(doc=4700,freq=1.0), product of:
              0.40928075 = queryWeight, product of:
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.06642641 = queryNorm
              2.3105311 = fieldWeight in 4700, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.375 = fieldNorm(doc=4700)
          2.1873689 = weight(author_txt:chung in 4700) [ClassicSimilarity], result of:
            2.1873689 = score(doc=4700,freq=1.0), product of:
              0.71583664 = queryWeight, product of:
                1.3225019 = boost
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.06642641 = queryNorm
              3.0556817 = fieldWeight in 4700, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.375 = fieldNorm(doc=4700)
        0.6666667 = coord(2/3)
    
  4. Cho, H.; Chen, M.-H.; Chung, S.: Testing an integrative theoretical model of knowledge-sharing behavior in the context of Wikipedia (2010) 2.09
    2.0886831 = sum of:
      2.0886831 = product of:
        3.1330247 = sum of:
          0.9456559 = weight(author_txt:chen in 461) [ClassicSimilarity], result of:
            0.9456559 = score(doc=461,freq=1.0), product of:
              0.40928075 = queryWeight, product of:
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.06642641 = queryNorm
              2.3105311 = fieldWeight in 461, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.375 = fieldNorm(doc=461)
          2.1873689 = weight(author_txt:chung in 461) [ClassicSimilarity], result of:
            2.1873689 = score(doc=461,freq=1.0), product of:
              0.71583664 = queryWeight, product of:
                1.3225019 = boost
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.06642641 = queryNorm
              3.0556817 = fieldWeight in 461, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.375 = fieldNorm(doc=461)
        0.6666667 = coord(2/3)
    
  5. Chen, H.; Chung, Y.-M.; Ramsey, M.; Yang, C.C.: ¬A smart itsy bitsy spider for the Web (1998) 1.74
    1.7405694 = sum of:
      1.7405694 = product of:
        2.610854 = sum of:
          0.78804654 = weight(author_txt:chen in 2872) [ClassicSimilarity], result of:
            0.78804654 = score(doc=2872,freq=1.0), product of:
              0.40928075 = queryWeight, product of:
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.06642641 = queryNorm
              1.9254425 = fieldWeight in 2872, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.161416 = idf(docFreq=247, maxDocs=43254)
                0.3125 = fieldNorm(doc=2872)
          1.8228073 = weight(author_txt:chung in 2872) [ClassicSimilarity], result of:
            1.8228073 = score(doc=2872,freq=1.0), product of:
              0.71583664 = queryWeight, product of:
                1.3225019 = boost
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.06642641 = queryNorm
              2.5464013 = fieldWeight in 2872, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.148484 = idf(docFreq=33, maxDocs=43254)
                0.3125 = fieldNorm(doc=2872)
        0.6666667 = coord(2/3)
    

Similar documents (content)

  1. Wenige, L.; Ruhland, J.: Similarity-based knowledge graph queries for recommendation retrieval (2019) 0.41
    0.4115802 = sum of:
      0.4115802 = product of:
        0.93540955 = sum of:
          0.024842784 = weight(abstract_txt:developed in 865) [ClassicSimilarity], result of:
            0.024842784 = score(doc=865,freq=1.0), product of:
              0.09471415 = queryWeight, product of:
                1.1022995 = boost
                4.1966753 = idf(docFreq=1768, maxDocs=43254)
                0.02047434 = queryNorm
              0.2622922 = fieldWeight in 865, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1966753 = idf(docFreq=1768, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.009609051 = weight(abstract_txt:information in 865) [ClassicSimilarity], result of:
            0.009609051 = score(doc=865,freq=1.0), product of:
              0.06334977 = queryWeight, product of:
                1.2749103 = boost
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.02047434 = queryNorm
              0.1516825 = fieldWeight in 865, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.03309628 = weight(abstract_txt:data in 865) [ClassicSimilarity], result of:
            0.03309628 = score(doc=865,freq=3.0), product of:
              0.09101734 = queryWeight, product of:
                1.3234266 = boost
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.02047434 = queryNorm
              0.36362606 = fieldWeight in 865, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.04347874 = weight(abstract_txt:test in 865) [ClassicSimilarity], result of:
            0.04347874 = score(doc=865,freq=1.0), product of:
              0.13755171 = queryWeight, product of:
                1.3283886 = boost
                5.057442 = idf(docFreq=747, maxDocs=43254)
                0.02047434 = queryNorm
              0.31609014 = fieldWeight in 865, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.057442 = idf(docFreq=747, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.024910834 = weight(abstract_txt:online in 865) [ClassicSimilarity], result of:
            0.024910834 = score(doc=865,freq=1.0), product of:
              0.10861854 = queryWeight, product of:
                1.4457386 = boost
                3.669478 = idf(docFreq=2996, maxDocs=43254)
                0.02047434 = queryNorm
              0.22934237 = fieldWeight in 865, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.669478 = idf(docFreq=2996, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.06586406 = weight(abstract_txt:showed in 865) [ClassicSimilarity], result of:
            0.06586406 = score(doc=865,freq=1.0), product of:
              0.18143192 = queryWeight, product of:
                1.5256292 = boost
                5.808377 = idf(docFreq=352, maxDocs=43254)
                0.02047434 = queryNorm
              0.36302355 = fieldWeight in 865, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.808377 = idf(docFreq=352, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.13821483 = weight(abstract_txt:graph in 865) [ClassicSimilarity], result of:
            0.13821483 = score(doc=865,freq=2.0), product of:
              0.23603393 = queryWeight, product of:
                1.7401206 = boost
                6.624989 = idf(docFreq=155, maxDocs=43254)
                0.02047434 = queryNorm
              0.5855718 = fieldWeight in 865, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.624989 = idf(docFreq=155, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.039717324 = weight(abstract_txt:retrieval in 865) [ClassicSimilarity], result of:
            0.039717324 = score(doc=865,freq=2.0), product of:
              0.12949948 = queryWeight, product of:
                1.822809 = boost
                3.4699 = idf(docFreq=3658, maxDocs=43254)
                0.02047434 = queryNorm
              0.3066987 = fieldWeight in 865, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4699 = idf(docFreq=3658, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.19035976 = weight(abstract_txt:recommender in 865) [ClassicSimilarity], result of:
            0.19035976 = score(doc=865,freq=1.0), product of:
              0.36812738 = queryWeight, product of:
                2.1731575 = boost
                8.273647 = idf(docFreq=29, maxDocs=43254)
                0.02047434 = queryNorm
              0.51710296 = fieldWeight in 865, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.273647 = idf(docFreq=29, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.048586838 = weight(abstract_txt:methods in 865) [ClassicSimilarity], result of:
            0.048586838 = score(doc=865,freq=1.0), product of:
              0.18662527 = queryWeight, product of:
                2.188227 = boost
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.02047434 = queryNorm
              0.26034436 = fieldWeight in 865, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
          0.31672904 = weight(abstract_txt:recommendation in 865) [ClassicSimilarity], result of:
            0.31672904 = score(doc=865,freq=3.0), product of:
              0.4102639 = queryWeight, product of:
                2.8097613 = boost
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.02047434 = queryNorm
              0.77201295 = fieldWeight in 865, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.0625 = fieldNorm(doc=865)
        0.44 = coord(11/25)
    
  2. Minkov, E.; Kahanov, K.; Kuflik, T.: Graph-based recommendation integrating rating history and domain knowledge : application to on-site guidance of museum visitors (2017) 0.23
    0.22864525 = sum of:
      0.22864525 = product of:
        0.8165902 = sum of:
          0.021635424 = weight(abstract_txt:model in 5221) [ClassicSimilarity], result of:
            0.021635424 = score(doc=5221,freq=1.0), product of:
              0.08637571 = queryWeight, product of:
                1.0526596 = boost
                4.0076866 = idf(docFreq=2136, maxDocs=43254)
                0.02047434 = queryNorm
              0.2504804 = fieldWeight in 5221, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0076866 = idf(docFreq=2136, maxDocs=43254)
                0.0625 = fieldNorm(doc=5221)
          0.019218102 = weight(abstract_txt:information in 5221) [ClassicSimilarity], result of:
            0.019218102 = score(doc=5221,freq=4.0), product of:
              0.06334977 = queryWeight, product of:
                1.2749103 = boost
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.02047434 = queryNorm
              0.303365 = fieldWeight in 5221, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.0625 = fieldNorm(doc=5221)
          0.019108146 = weight(abstract_txt:data in 5221) [ClassicSimilarity], result of:
            0.019108146 = score(doc=5221,freq=1.0), product of:
              0.09101734 = queryWeight, product of:
                1.3234266 = boost
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.02047434 = queryNorm
              0.20993961 = fieldWeight in 5221, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.0625 = fieldNorm(doc=5221)
          0.19546528 = weight(abstract_txt:graph in 5221) [ClassicSimilarity], result of:
            0.19546528 = score(doc=5221,freq=4.0), product of:
              0.23603393 = queryWeight, product of:
                1.7401206 = boost
                6.624989 = idf(docFreq=155, maxDocs=43254)
                0.02047434 = queryNorm
              0.8281236 = fieldWeight in 5221, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.624989 = idf(docFreq=155, maxDocs=43254)
                0.0625 = fieldNorm(doc=5221)
          0.32971278 = weight(abstract_txt:recommender in 5221) [ClassicSimilarity], result of:
            0.32971278 = score(doc=5221,freq=3.0), product of:
              0.36812738 = queryWeight, product of:
                2.1731575 = boost
                8.273647 = idf(docFreq=29, maxDocs=43254)
                0.02047434 = queryNorm
              0.8956486 = fieldWeight in 5221, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                8.273647 = idf(docFreq=29, maxDocs=43254)
                0.0625 = fieldNorm(doc=5221)
          0.048586838 = weight(abstract_txt:methods in 5221) [ClassicSimilarity], result of:
            0.048586838 = score(doc=5221,freq=1.0), product of:
              0.18662527 = queryWeight, product of:
                2.188227 = boost
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.02047434 = queryNorm
              0.26034436 = fieldWeight in 5221, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.0625 = fieldNorm(doc=5221)
          0.18286361 = weight(abstract_txt:recommendation in 5221) [ClassicSimilarity], result of:
            0.18286361 = score(doc=5221,freq=1.0), product of:
              0.4102639 = queryWeight, product of:
                2.8097613 = boost
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.02047434 = queryNorm
              0.4457219 = fieldWeight in 5221, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.0625 = fieldNorm(doc=5221)
        0.28 = coord(7/25)
    
  3. Rasmussen, E.: Clustering algorithms (1992) 0.19
    0.18775465 = sum of:
      0.18775465 = product of:
        0.52154064 = sum of:
          0.020015294 = weight(abstract_txt:than in 5514) [ClassicSimilarity], result of:
            0.020015294 = score(doc=5514,freq=1.0), product of:
              0.08200796 = queryWeight, product of:
                1.0256995 = boost
                3.905044 = idf(docFreq=2367, maxDocs=43254)
                0.02047434 = queryNorm
              0.24406525 = fieldWeight in 5514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.905044 = idf(docFreq=2367, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.053491063 = weight(abstract_txt:method in 5514) [ClassicSimilarity], result of:
            0.053491063 = score(doc=5514,freq=3.0), product of:
              0.10950361 = queryWeight, product of:
                1.1852401 = boost
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.02047434 = queryNorm
              0.48848674 = fieldWeight in 5514, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.009609051 = weight(abstract_txt:information in 5514) [ClassicSimilarity], result of:
            0.009609051 = score(doc=5514,freq=1.0), product of:
              0.06334977 = queryWeight, product of:
                1.2749103 = boost
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.02047434 = queryNorm
              0.1516825 = fieldWeight in 5514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.054722767 = weight(abstract_txt:high in 5514) [ClassicSimilarity], result of:
            0.054722767 = score(doc=5514,freq=2.0), product of:
              0.12726727 = queryWeight, product of:
                1.2777636 = boost
                4.8647027 = idf(docFreq=906, maxDocs=43254)
                0.02047434 = queryNorm
              0.42998302 = fieldWeight in 5514, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.8647027 = idf(docFreq=906, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.03309628 = weight(abstract_txt:data in 5514) [ClassicSimilarity], result of:
            0.03309628 = score(doc=5514,freq=3.0), product of:
              0.09101734 = queryWeight, product of:
                1.3234266 = boost
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.02047434 = queryNorm
              0.36362606 = fieldWeight in 5514, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.061459683 = weight(abstract_txt:degree in 5514) [ClassicSimilarity], result of:
            0.061459683 = score(doc=5514,freq=1.0), product of:
              0.17325066 = queryWeight, product of:
                1.4908351 = boost
                5.6759086 = idf(docFreq=402, maxDocs=43254)
                0.02047434 = queryNorm
              0.3547443 = fieldWeight in 5514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6759086 = idf(docFreq=402, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.04864359 = weight(abstract_txt:retrieval in 5514) [ClassicSimilarity], result of:
            0.04864359 = score(doc=5514,freq=3.0), product of:
              0.12949948 = queryWeight, product of:
                1.822809 = boost
                3.4699 = idf(docFreq=3658, maxDocs=43254)
                0.02047434 = queryNorm
              0.37562767 = fieldWeight in 5514, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.4699 = idf(docFreq=3658, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.11901297 = weight(abstract_txt:methods in 5514) [ClassicSimilarity], result of:
            0.11901297 = score(doc=5514,freq=6.0), product of:
              0.18662527 = queryWeight, product of:
                2.188227 = boost
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.02047434 = queryNorm
              0.63771087 = fieldWeight in 5514, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
          0.121489964 = weight(abstract_txt:association in 5514) [ClassicSimilarity], result of:
            0.121489964 = score(doc=5514,freq=1.0), product of:
              0.34380984 = queryWeight, product of:
                2.9700673 = boost
                5.6538215 = idf(docFreq=411, maxDocs=43254)
                0.02047434 = queryNorm
              0.35336384 = fieldWeight in 5514, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6538215 = idf(docFreq=411, maxDocs=43254)
                0.0625 = fieldNorm(doc=5514)
        0.36 = coord(9/25)
    
  4. Lai, C,-H.: Applying knowledge flow mining to group recommendation methods for task-based groups (2015) 0.18
    0.18255143 = sum of:
      0.18255143 = product of:
        0.6519694 = sum of:
          0.020015294 = weight(abstract_txt:than in 3132) [ClassicSimilarity], result of:
            0.020015294 = score(doc=3132,freq=1.0), product of:
              0.08200796 = queryWeight, product of:
                1.0256995 = boost
                3.905044 = idf(docFreq=2367, maxDocs=43254)
                0.02047434 = queryNorm
              0.24406525 = fieldWeight in 3132, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.905044 = idf(docFreq=2367, maxDocs=43254)
                0.0625 = fieldNorm(doc=3132)
          0.03088308 = weight(abstract_txt:method in 3132) [ClassicSimilarity], result of:
            0.03088308 = score(doc=3132,freq=1.0), product of:
              0.10950361 = queryWeight, product of:
                1.1852401 = boost
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.02047434 = queryNorm
              0.28202796 = fieldWeight in 3132, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.0625 = fieldNorm(doc=3132)
          0.021486491 = weight(abstract_txt:information in 3132) [ClassicSimilarity], result of:
            0.021486491 = score(doc=3132,freq=5.0), product of:
              0.06334977 = queryWeight, product of:
                1.2749103 = boost
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.02047434 = queryNorm
              0.33917236 = fieldWeight in 3132, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.0625 = fieldNorm(doc=3132)
          0.025171617 = weight(abstract_txt:different in 3132) [ClassicSimilarity], result of:
            0.025171617 = score(doc=3132,freq=1.0), product of:
              0.10937528 = queryWeight, product of:
                1.450766 = boost
                3.6822383 = idf(docFreq=2958, maxDocs=43254)
                0.02047434 = queryNorm
              0.2301399 = fieldWeight in 3132, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6822383 = idf(docFreq=2958, maxDocs=43254)
                0.0625 = fieldNorm(doc=3132)
          0.080042206 = weight(abstract_txt:mining in 3132) [ClassicSimilarity], result of:
            0.080042206 = score(doc=3132,freq=1.0), product of:
              0.20661448 = queryWeight, product of:
                1.6280679 = boost
                6.1983814 = idf(docFreq=238, maxDocs=43254)
                0.02047434 = queryNorm
              0.38739884 = fieldWeight in 3132, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1983814 = idf(docFreq=238, maxDocs=43254)
                0.0625 = fieldNorm(doc=3132)
          0.108643465 = weight(abstract_txt:methods in 3132) [ClassicSimilarity], result of:
            0.108643465 = score(doc=3132,freq=5.0), product of:
              0.18662527 = queryWeight, product of:
                2.188227 = boost
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.02047434 = queryNorm
              0.58214766 = fieldWeight in 3132, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.1655097 = idf(docFreq=1824, maxDocs=43254)
                0.0625 = fieldNorm(doc=3132)
          0.36572722 = weight(abstract_txt:recommendation in 3132) [ClassicSimilarity], result of:
            0.36572722 = score(doc=3132,freq=4.0), product of:
              0.4102639 = queryWeight, product of:
                2.8097613 = boost
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.02047434 = queryNorm
              0.8914438 = fieldWeight in 3132, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.0625 = fieldNorm(doc=3132)
        0.28 = coord(7/25)
    
  5. Wang, W.M.; Cheung, C.F.; Lee, W.B.; Kwok, S.K.: Mining knowledge from natural language texts using fuzzy associated concept mapping (2008) 0.18
    0.1796064 = sum of:
      0.1796064 = product of:
        0.56127 = sum of:
          0.03821586 = weight(abstract_txt:method in 4122) [ClassicSimilarity], result of:
            0.03821586 = score(doc=4122,freq=2.0), product of:
              0.10950361 = queryWeight, product of:
                1.1852401 = boost
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.02047434 = queryNorm
              0.34899178 = fieldWeight in 4122, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.5124474 = idf(docFreq=1289, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
          0.011890594 = weight(abstract_txt:information in 4122) [ClassicSimilarity], result of:
            0.011890594 = score(doc=4122,freq=2.0), product of:
              0.06334977 = queryWeight, product of:
                1.2749103 = boost
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.02047434 = queryNorm
              0.18769751 = fieldWeight in 4122, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.42692 = idf(docFreq=10382, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
          0.016719628 = weight(abstract_txt:data in 4122) [ClassicSimilarity], result of:
            0.016719628 = score(doc=4122,freq=1.0), product of:
              0.09101734 = queryWeight, product of:
                1.3234266 = boost
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.02047434 = queryNorm
              0.18369716 = fieldWeight in 4122, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3590338 = idf(docFreq=4087, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
          0.038043898 = weight(abstract_txt:test in 4122) [ClassicSimilarity], result of:
            0.038043898 = score(doc=4122,freq=1.0), product of:
              0.13755171 = queryWeight, product of:
                1.3283886 = boost
                5.057442 = idf(docFreq=747, maxDocs=43254)
                0.02047434 = queryNorm
              0.27657887 = fieldWeight in 4122, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.057442 = idf(docFreq=747, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
          0.05377722 = weight(abstract_txt:degree in 4122) [ClassicSimilarity], result of:
            0.05377722 = score(doc=4122,freq=1.0), product of:
              0.17325066 = queryWeight, product of:
                1.4908351 = boost
                5.6759086 = idf(docFreq=402, maxDocs=43254)
                0.02047434 = queryNorm
              0.31040126 = fieldWeight in 4122, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6759086 = idf(docFreq=402, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
          0.07003693 = weight(abstract_txt:mining in 4122) [ClassicSimilarity], result of:
            0.07003693 = score(doc=4122,freq=1.0), product of:
              0.20661448 = queryWeight, product of:
                1.6280679 = boost
                6.1983814 = idf(docFreq=238, maxDocs=43254)
                0.02047434 = queryNorm
              0.338974 = fieldWeight in 4122, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.1983814 = idf(docFreq=238, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
          0.22628216 = weight(abstract_txt:recommendation in 4122) [ClassicSimilarity], result of:
            0.22628216 = score(doc=4122,freq=2.0), product of:
              0.4102639 = queryWeight, product of:
                2.8097613 = boost
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.02047434 = queryNorm
              0.5515527 = fieldWeight in 4122, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.1315503 = idf(docFreq=93, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
          0.10630372 = weight(abstract_txt:association in 4122) [ClassicSimilarity], result of:
            0.10630372 = score(doc=4122,freq=1.0), product of:
              0.34380984 = queryWeight, product of:
                2.9700673 = boost
                5.6538215 = idf(docFreq=411, maxDocs=43254)
                0.02047434 = queryNorm
              0.30919337 = fieldWeight in 4122, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.6538215 = idf(docFreq=411, maxDocs=43254)
                0.0546875 = fieldNorm(doc=4122)
        0.32 = coord(8/25)