Search (7 results, page 1 of 1)

  • × author_ss:"Chan, H.C."
  • × year_i:[1990 TO 2000}
  1. Chan, H.C.; Goldstein, R.C.: User-database interaction at the knowledge level of abstraction (1997) 0.02
    0.018005218 = product of:
      0.036010437 = sum of:
        0.036010437 = product of:
          0.05401565 = sum of:
            0.0047490974 = weight(_text_:s in 2743) [ClassicSimilarity], result of:
              0.0047490974 = score(doc=2743,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.09609913 = fieldWeight in 2743, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=2743)
            0.049266554 = weight(_text_:22 in 2743) [ClassicSimilarity], result of:
              0.049266554 = score(doc=2743,freq=2.0), product of:
                0.15917034 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04545348 = queryNorm
                0.30952093 = fieldWeight in 2743, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=2743)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Date
    22. 1.1999 19:06:09
    Source
    Information and software technology. 39(1997) no.10, S.657-668
  2. Chan, H.C.; Wei, K.K.: User query performance with database feedback (1999) 0.00
    0.0013851533 = product of:
      0.0027703065 = sum of:
        0.0027703065 = product of:
          0.00831092 = sum of:
            0.00831092 = weight(_text_:s in 4678) [ClassicSimilarity], result of:
              0.00831092 = score(doc=4678,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.16817348 = fieldWeight in 4678, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.109375 = fieldNorm(doc=4678)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Pages
    S.354-
  3. Chan, H.C.; Tan, B.C.Y.; Wei, K.L.: Three important determinants of user performance for database retrieval (1999) 0.00
    0.0011872743 = product of:
      0.0023745487 = sum of:
        0.0023745487 = product of:
          0.007123646 = sum of:
            0.007123646 = weight(_text_:s in 6828) [ClassicSimilarity], result of:
              0.007123646 = score(doc=6828,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.14414869 = fieldWeight in 6828, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6828)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    International journal of human-computer studies. 51(1999) no.5, S.895-918
  4. Chan, H.C.: Naturalness of graphical queries based on the entity relationship model (1995) 0.00
    7.915163E-4 = product of:
      0.0015830325 = sum of:
        0.0015830325 = product of:
          0.0047490974 = sum of:
            0.0047490974 = weight(_text_:s in 3207) [ClassicSimilarity], result of:
              0.0047490974 = score(doc=3207,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.09609913 = fieldWeight in 3207, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3207)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Journal of database management. 6(1995) no.3, S.3-13
  5. Chan, H.C.; Wei, K.K.: Effect of grading schemes on outcomes in query writing experiments (1996) 0.00
    7.915163E-4 = product of:
      0.0015830325 = sum of:
        0.0015830325 = product of:
          0.0047490974 = sum of:
            0.0047490974 = weight(_text_:s in 5127) [ClassicSimilarity], result of:
              0.0047490974 = score(doc=5127,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.09609913 = fieldWeight in 5127, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5127)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Interacting with computers. 8(1996) no.1, S.7-12
  6. Chan, H.C.; Wei, K.K.; Siau, K.L.: ¬An empirical study on end-users' update performance for different abstraction levels (1994) 0.00
    6.9257664E-4 = product of:
      0.0013851533 = sum of:
        0.0013851533 = product of:
          0.00415546 = sum of:
            0.00415546 = weight(_text_:s in 1762) [ClassicSimilarity], result of:
              0.00415546 = score(doc=1762,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.08408674 = fieldWeight in 1762, 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=1762)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    International journal of human-computer studies. 41(1994) no.3, S.309-328
  7. Chan, H.C.; Wei, K.K.; Siau, K.L.: ¬A system for query comprehension (1997) 0.00
    6.9257664E-4 = product of:
      0.0013851533 = sum of:
        0.0013851533 = product of:
          0.00415546 = sum of:
            0.00415546 = weight(_text_:s in 422) [ClassicSimilarity], result of:
              0.00415546 = score(doc=422,freq=2.0), product of:
                0.049418733 = queryWeight, product of:
                  1.0872376 = idf(docFreq=40523, maxDocs=44218)
                  0.04545348 = queryNorm
                0.08408674 = fieldWeight in 422, 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=422)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Source
    Information and software technology. 39(1997) no.3, S.141-148