Search (8 results, page 1 of 1)

  • × author_ss:"Xu, Y."
  1. Xu, Y.: ¬The dynamics of interactive information retrieval behavior : part I: an activity theory perspective (2007) 0.01
    0.008003051 = product of:
      0.020007627 = sum of:
        0.0032338493 = weight(_text_:s in 331) [ClassicSimilarity], result of:
          0.0032338493 = score(doc=331,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.072074346 = fieldWeight in 331, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=331)
        0.016773777 = product of:
          0.033547554 = sum of:
            0.033547554 = weight(_text_:22 in 331) [ClassicSimilarity], result of:
              0.033547554 = score(doc=331,freq=2.0), product of:
                0.14451389 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04126811 = queryNorm
                0.23214069 = fieldWeight in 331, 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=331)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Date
    27. 5.2007 13:55:22
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.7, S.958-970
  2. Xu, Y.; Ryan, K.: Changing lanes on the information superhighway : academic libraries and the Internet (1995) 0.00
    7.545648E-4 = product of:
      0.003772824 = sum of:
        0.003772824 = weight(_text_:s in 3672) [ClassicSimilarity], result of:
          0.003772824 = score(doc=3672,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.08408674 = fieldWeight in 3672, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0546875 = fieldNorm(doc=3672)
      0.2 = coord(1/5)
    
    Source
    Journal of educational media and library sciences. 32(1995) no.3, S.247-263
  3. Xu, Y.: Relevance judgment in epistemic and hedonic information searches (2007) 0.00
    6.467699E-4 = product of:
      0.0032338493 = sum of:
        0.0032338493 = weight(_text_:s in 64) [ClassicSimilarity], result of:
          0.0032338493 = score(doc=64,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.072074346 = fieldWeight in 64, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=64)
      0.2 = coord(1/5)
    
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.2, S.179-189
  4. Xu, Y.; Liu, C.: ¬The dynamics of interactive information retrieval : part II: an empirical study from the activity theory perspective (2007) 0.00
    6.467699E-4 = product of:
      0.0032338493 = sum of:
        0.0032338493 = weight(_text_:s in 333) [ClassicSimilarity], result of:
          0.0032338493 = score(doc=333,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.072074346 = fieldWeight in 333, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=333)
      0.2 = coord(1/5)
    
    Source
    Journal of the American Society for Information Science and Technology. 58(2007) no.7, S.987-998
  5. Xu, Y.; Wang, D.: Order effect in relevance judgment : mediation and causality (2008) 0.00
    6.467699E-4 = product of:
      0.0032338493 = sum of:
        0.0032338493 = weight(_text_:s in 1877) [ClassicSimilarity], result of:
          0.0032338493 = score(doc=1877,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.072074346 = fieldWeight in 1877, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=1877)
      0.2 = coord(1/5)
    
    Source
    Journal of the American Society for Information Science and Technology. 59(2008) no.8, S.1264-1275
  6. Xu, Y.; Bernard, A.: Knowledge organization through statistical computation : a new approach (2009) 0.00
    6.467699E-4 = product of:
      0.0032338493 = sum of:
        0.0032338493 = weight(_text_:s in 3252) [ClassicSimilarity], result of:
          0.0032338493 = score(doc=3252,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.072074346 = fieldWeight in 3252, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=3252)
      0.2 = coord(1/5)
    
    Source
    Knowledge organization. 36(2009) no.4, S.227-239
  7. Xu, Y.; Li, G.; Mou, L.; Lu, Y.: Learning non-taxonomic relations on demand for ontology extension (2014) 0.00
    6.467699E-4 = product of:
      0.0032338493 = sum of:
        0.0032338493 = weight(_text_:s in 2961) [ClassicSimilarity], result of:
          0.0032338493 = score(doc=2961,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.072074346 = fieldWeight in 2961, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046875 = fieldNorm(doc=2961)
      0.2 = coord(1/5)
    
    Source
    International journal of software engineering and knowledge engineering. 24(2014) no.8, S.1159-1175
  8. Xu, Y.; Yin, H.: Novelty and topicality in interactive information retrieval (2008) 0.00
    5.3897494E-4 = product of:
      0.0026948745 = sum of:
        0.0026948745 = weight(_text_:s in 1355) [ClassicSimilarity], result of:
          0.0026948745 = score(doc=1355,freq=2.0), product of:
            0.044868242 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04126811 = queryNorm
            0.060061958 = fieldWeight in 1355, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1355)
      0.2 = coord(1/5)
    
    Source
    Journal of the American Society for Information Science and Technology. 59(2008) no.2, S.201-215