Search (5 results, page 1 of 1)

  • × author_ss:"Zhang, Y."
  • × theme_ss:"Informetrie"
  1. Zhang, Y.: ¬The impact of Internet-based electronic resources on formal scholarly communication in the area of library and information science : a citation analysis (1998) 0.01
    0.0072889132 = product of:
      0.0145778265 = sum of:
        0.0145778265 = product of:
          0.043733478 = sum of:
            0.043733478 = weight(_text_:22 in 2808) [ClassicSimilarity], result of:
              0.043733478 = score(doc=2808,freq=4.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.27358043 = fieldWeight in 2808, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2808)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    30. 1.1999 17:22:22
  2. Zhang, Y.; Jansen, B.J.; Spink, A.: Identification of factors predicting clickthrough in Web searching using neural network analysis (2009) 0.01
    0.006184848 = product of:
      0.012369696 = sum of:
        0.012369696 = product of:
          0.03710909 = sum of:
            0.03710909 = weight(_text_:22 in 2742) [ClassicSimilarity], result of:
              0.03710909 = score(doc=2742,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.23214069 = fieldWeight in 2742, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2742)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 3.2009 17:49:11
  3. Zhang, Y.; Wu, M.; Zhang, G.; Lu, J.: Stepping beyond your comfort zone : diffusion-based network analytics for knowledge trajectory recommendation (2023) 0.01
    0.00515404 = product of:
      0.01030808 = sum of:
        0.01030808 = product of:
          0.03092424 = sum of:
            0.03092424 = weight(_text_:22 in 994) [ClassicSimilarity], result of:
              0.03092424 = score(doc=994,freq=2.0), product of:
                0.15985602 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.045649286 = queryNorm
                0.19345059 = fieldWeight in 994, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=994)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Date
    22. 6.2023 18:07:12
  4. Zhang, Y.; Zhang, G.; Zhu, D.; Lu, J.: Scientific evolutionary pathways : identifying and visualizing relationships for scientific topics (2017) 0.00
    0.0015170728 = product of:
      0.0030341456 = sum of:
        0.0030341456 = product of:
          0.009102437 = sum of:
            0.009102437 = weight(_text_:d in 3758) [ClassicSimilarity], result of:
              0.009102437 = score(doc=3758,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.104954086 = fieldWeight in 3758, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3758)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
  5. Lu, C.; Zhang, Y.; Ahn, Y.-Y.; Ding, Y.; Zhang, C.; Ma, D.: Co-contributorship network and division of labor in individual scientific collaborations (2020) 0.00
    0.0015170728 = product of:
      0.0030341456 = sum of:
        0.0030341456 = product of:
          0.009102437 = sum of:
            0.009102437 = weight(_text_:d in 5963) [ClassicSimilarity], result of:
              0.009102437 = score(doc=5963,freq=2.0), product of:
                0.0867278 = queryWeight, product of:
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.045649286 = queryNorm
                0.104954086 = fieldWeight in 5963, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.899872 = idf(docFreq=17979, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5963)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    

Years