Search (3 results, page 1 of 1)

  • × author_ss:"Xu, J."
  • × theme_ss:"Informetrie"
  1. Liu, M.; Bu, Y.; Chen, C.; Xu, J.; Li, D.; Leng, Y.; Freeman, R.B.; Meyer, E.T.; Yoon, W.; Sung, M.; Jeong, M.; Lee, J.; Kang, J.; Min, C.; Zhai, Y.; Song, M.; Ding, Y.: Pandemics are catalysts of scientific novelty : evidence from COVID-19 (2022) 0.01
    0.013816638 = product of:
      0.04835823 = sum of:
        0.014187992 = product of:
          0.028375983 = sum of:
            0.028375983 = weight(_text_:w in 633) [ClassicSimilarity], result of:
              0.028375983 = score(doc=633,freq=2.0), product of:
                0.13479044 = queryWeight, product of:
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.035370585 = queryNorm
                0.21051927 = fieldWeight in 633, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.8108058 = idf(docFreq=2659, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=633)
          0.5 = coord(1/2)
        0.03417024 = weight(_text_:j in 633) [ClassicSimilarity], result of:
          0.03417024 = score(doc=633,freq=6.0), product of:
            0.11238991 = queryWeight, product of:
              3.1774964 = idf(docFreq=5010, maxDocs=44218)
              0.035370585 = queryNorm
            0.304033 = fieldWeight in 633, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.1774964 = idf(docFreq=5010, maxDocs=44218)
              0.0390625 = fieldNorm(doc=633)
      0.2857143 = coord(2/7)
    
  2. Zhang, C.; Bu, Y.; Ding, Y.; Xu, J.: Understanding scientific collaboration : homophily, transitivity, and preferential attachment (2018) 0.00
    0.003381977 = product of:
      0.023673838 = sum of:
        0.023673838 = weight(_text_:j in 4011) [ClassicSimilarity], result of:
          0.023673838 = score(doc=4011,freq=2.0), product of:
            0.11238991 = queryWeight, product of:
              3.1774964 = idf(docFreq=5010, maxDocs=44218)
              0.035370585 = queryNorm
            0.21064025 = fieldWeight in 4011, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.1774964 = idf(docFreq=5010, maxDocs=44218)
              0.046875 = fieldNorm(doc=4011)
      0.14285715 = coord(1/7)
    
  3. Bu, Y.; Ding, Y.; Xu, J.; Liang, X.; Gao, G.; Zhao, Y.: Understanding success through the diversity of collaborators and the milestone of career (2018) 0.00
    0.002818314 = product of:
      0.019728197 = sum of:
        0.019728197 = weight(_text_:j in 4012) [ClassicSimilarity], result of:
          0.019728197 = score(doc=4012,freq=2.0), product of:
            0.11238991 = queryWeight, product of:
              3.1774964 = idf(docFreq=5010, maxDocs=44218)
              0.035370585 = queryNorm
            0.17553353 = fieldWeight in 4012, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.1774964 = idf(docFreq=5010, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4012)
      0.14285715 = coord(1/7)