Search (3 results, page 1 of 1)

  • × author_ss:"Xu, J."
  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
    0.010142221 = product of:
      0.040568884 = sum of:
        0.040568884 = weight(_text_:c in 633) [ClassicSimilarity], result of:
          0.040568884 = score(doc=633,freq=4.0), product of:
            0.1505424 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.043643 = queryNorm
            0.2694848 = fieldWeight in 633, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.0390625 = fieldNorm(doc=633)
      0.25 = coord(1/4)
    
  2. Zhang, C.; Bu, Y.; Ding, Y.; Xu, J.: Understanding scientific collaboration : homophily, transitivity, and preferential attachment (2018) 0.01
    0.00860596 = product of:
      0.03442384 = sum of:
        0.03442384 = weight(_text_:c in 4011) [ClassicSimilarity], result of:
          0.03442384 = score(doc=4011,freq=2.0), product of:
            0.1505424 = queryWeight, product of:
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.043643 = queryNorm
            0.22866541 = fieldWeight in 4011, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.4494052 = idf(docFreq=3817, maxDocs=44218)
              0.046875 = fieldNorm(doc=4011)
      0.25 = coord(1/4)
    
  3. Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997) 0.01
    0.007391281 = product of:
      0.029565124 = sum of:
        0.029565124 = product of:
          0.059130248 = sum of:
            0.059130248 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
              0.059130248 = score(doc=3103,freq=2.0), product of:
                0.15283036 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.043643 = queryNorm
                0.38690117 = fieldWeight in 3103, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3103)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    27. 2.1999 20:55:22