Document (#22310)

Author

Leighton, H.V.
Srivastava, J.

Title

First 20 precision among World Wide Web search services (search engines)

Source

Journal of the American Society for Information Science. 50(1999) no.10, S.870-881

Year

1999

Theme

Suchmaschinen

Similar documents (author)

1. Srivastava, A.P.: Theory of knowledge classification in libraries (1964) 6.19

   6.1935673 = sum of:
     6.1935673 = weight(author_txt:srivastava in 6318) [ClassicSimilarity], result of:
       6.1935673 = fieldWeight in 6318, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.625 = fieldNorm(doc=6318)
   

2. Srivastava, A.P.; Satija, M.P.; Padmanabhan, R.; Srivastava, A.: Theory of knowledge classification for libraries (1992) 4.38

   4.3795137 = sum of:
     4.3795137 = weight(author_txt:srivastava in 2529) [ClassicSimilarity], result of:
       4.3795137 = fieldWeight in 2529, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.3125 = fieldNorm(doc=2529)
   

3. Bhargava, J.K.; Srivastava, R.K.; Murthy, S.S.: SANJAY: an Indian library automation package based on CDS/ISIS (1993) 3.72

   3.7161405 = sum of:
     3.7161405 = weight(author_txt:srivastava in 5040) [ClassicSimilarity], result of:
       3.7161405 = fieldWeight in 5040, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.375 = fieldNorm(doc=5040)
   

4. Lee, D.; Srivastava, S.; Vista, D.: Generating advanced query interfaces (1998) 3.72

   3.7161405 = sum of:
     3.7161405 = weight(author_txt:srivastava in 4607) [ClassicSimilarity], result of:
       3.7161405 = fieldWeight in 4607, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.909708 = idf(docFreq=5, maxDocs=44421)
         0.375 = fieldNorm(doc=4607)
   

Similar documents (content)

1. Spink, A.; Jansen, B.J.; Blakely, C.; Koshman, S.: ¬A study of results overlap and uniqueness among major Web search engines (2006) 0.85

   0.85049593 = sum of:
     0.85049593 = product of:
       1.1339946 = sum of:
         0.102925345 = weight(abstract_txt:first in 1993) [ClassicSimilarity], result of:
           0.102925345 = score(doc=1993,freq=3.0), product of:
             0.2610845 = queryWeight, product of:
               4.1619086 = idf(docFreq=1880, maxDocs=44421)
               0.062731914 = queryNorm
             0.39422235 = fieldWeight in 1993, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.1619086 = idf(docFreq=1880, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1993)
         0.071516976 = weight(abstract_txt:world in 1993) [ClassicSimilarity], result of:
           0.071516976 = score(doc=1993,freq=1.0), product of:
             0.2954015 = queryWeight, product of:
               1.0636919 = boost
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.062731914 = queryNorm
             0.24210091 = fieldWeight in 1993, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1993)
         0.076037064 = weight(abstract_txt:among in 1993) [ClassicSimilarity], result of:
           0.076037064 = score(doc=1993,freq=1.0), product of:
             0.30772078 = queryWeight, product of:
               1.0856451 = boost
               4.518356 = idf(docFreq=1316, maxDocs=44421)
               0.062731914 = queryNorm
             0.24709758 = fieldWeight in 1993, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.518356 = idf(docFreq=1316, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1993)
         0.09524226 = weight(abstract_txt:wide in 1993) [ClassicSimilarity], result of:
           0.09524226 = score(doc=1993,freq=1.0), product of:
             0.35756892 = queryWeight, product of:
               1.1702788 = boost
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.062731914 = queryNorm
             0.26636058 = fieldWeight in 1993, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1993)
         0.45648742 = weight(abstract_txt:engines in 1993) [ClassicSimilarity], result of:
           0.45648742 = score(doc=1993,freq=14.0), product of:
             0.42174485 = queryWeight, product of:
               1.2709672 = boost
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.062731914 = queryNorm
             1.0823781 = fieldWeight in 1993, product of:
               3.7416575 = tf(freq=14.0), with freq of:
                 14.0 = termFreq=14.0
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1993)
         0.33178547 = weight(abstract_txt:search in 1993) [ClassicSimilarity], result of:
           0.33178547 = score(doc=1993,freq=17.0), product of:
             0.40262914 = queryWeight, product of:
               1.7562125 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.062731914 = queryNorm
             0.8240473 = fieldWeight in 1993, product of:
               4.1231055 = tf(freq=17.0), with freq of:
                 17.0 = termFreq=17.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1993)
       0.75 = coord(6/8)
   

2. Rudich, J.: Internet search engines on CD-ROM (1996) 0.75

   0.74595803 = sum of:
     0.74595803 = product of:
       1.4919161 = sum of:
         0.2889722 = weight(abstract_txt:world in 5722) [ClassicSimilarity], result of:
           0.2889722 = score(doc=5722,freq=2.0), product of:
             0.2954015 = queryWeight, product of:
               1.0636919 = boost
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.062731914 = queryNorm
             0.97823536 = fieldWeight in 5722, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.15625 = fieldNorm(doc=5722)
         0.38483685 = weight(abstract_txt:wide in 5722) [ClassicSimilarity], result of:
           0.38483685 = score(doc=5722,freq=2.0), product of:
             0.35756892 = queryWeight, product of:
               1.1702788 = boost
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.062731914 = queryNorm
             1.0762593 = fieldWeight in 5722, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.15625 = fieldNorm(doc=5722)
         0.49296 = weight(abstract_txt:engines in 5722) [ClassicSimilarity], result of:
           0.49296 = score(doc=5722,freq=2.0), product of:
             0.42174485 = queryWeight, product of:
               1.2709672 = boost
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.062731914 = queryNorm
             1.1688584 = fieldWeight in 5722, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.15625 = fieldNorm(doc=5722)
         0.32514706 = weight(abstract_txt:search in 5722) [ClassicSimilarity], result of:
           0.32514706 = score(doc=5722,freq=2.0), product of:
             0.40262914 = queryWeight, product of:
               1.7562125 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.062731914 = queryNorm
             0.8075597 = fieldWeight in 5722, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.15625 = fieldNorm(doc=5722)
       0.5 = coord(4/8)
   

3. Spinning the Semantic Web : bringing the World Wide Web to its full potential (2003) 0.64

   0.63846487 = sum of:
     0.63846487 = product of:
       0.72967416 = sum of:
         0.067913115 = weight(abstract_txt:first in 2981) [ClassicSimilarity], result of:
           0.067913115 = score(doc=2981,freq=1.0), product of:
             0.2610845 = queryWeight, product of:
               4.1619086 = idf(docFreq=1880, maxDocs=44421)
               0.062731914 = queryNorm
             0.2601193 = fieldWeight in 2981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1619086 = idf(docFreq=1880, maxDocs=44421)
               0.0625 = fieldNorm(doc=2981)
         0.06970413 = weight(abstract_txt:services in 2981) [ClassicSimilarity], result of:
           0.06970413 = score(doc=2981,freq=1.0), product of:
             0.2656548 = queryWeight, product of:
               1.0087146 = boost
               4.198178 = idf(docFreq=1813, maxDocs=44421)
               0.062731914 = queryNorm
             0.2623861 = fieldWeight in 2981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.198178 = idf(docFreq=1813, maxDocs=44421)
               0.0625 = fieldNorm(doc=2981)
         0.08173369 = weight(abstract_txt:world in 2981) [ClassicSimilarity], result of:
           0.08173369 = score(doc=2981,freq=1.0), product of:
             0.2954015 = queryWeight, product of:
               1.0636919 = boost
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.062731914 = queryNorm
             0.27668676 = fieldWeight in 2981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.0625 = fieldNorm(doc=2981)
         0.0868995 = weight(abstract_txt:among in 2981) [ClassicSimilarity], result of:
           0.0868995 = score(doc=2981,freq=1.0), product of:
             0.30772078 = queryWeight, product of:
               1.0856451 = boost
               4.518356 = idf(docFreq=1316, maxDocs=44421)
               0.062731914 = queryNorm
             0.28239724 = fieldWeight in 2981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.518356 = idf(docFreq=1316, maxDocs=44421)
               0.0625 = fieldNorm(doc=2981)
         0.15393475 = weight(abstract_txt:wide in 2981) [ClassicSimilarity], result of:
           0.15393475 = score(doc=2981,freq=2.0), product of:
             0.35756892 = queryWeight, product of:
               1.1702788 = boost
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.062731914 = queryNorm
             0.4305037 = fieldWeight in 2981, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.0625 = fieldNorm(doc=2981)
         0.13943015 = weight(abstract_txt:engines in 2981) [ClassicSimilarity], result of:
           0.13943015 = score(doc=2981,freq=1.0), product of:
             0.42174485 = queryWeight, product of:
               1.2709672 = boost
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.062731914 = queryNorm
             0.3306031 = fieldWeight in 2981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.0625 = fieldNorm(doc=2981)
         0.13005883 = weight(abstract_txt:search in 2981) [ClassicSimilarity], result of:
           0.13005883 = score(doc=2981,freq=2.0), product of:
             0.40262914 = queryWeight, product of:
               1.7562125 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.062731914 = queryNorm
             0.3230239 = fieldWeight in 2981, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.0625 = fieldNorm(doc=2981)
       0.875 = coord(7/8)
   

4. Dasgupta, S.K.: Search engines : tooles for exploring the Internet (1998) 0.64

   0.63795745 = sum of:
     0.63795745 = product of:
       1.7012198 = sum of:
         0.54424155 = weight(abstract_txt:wide in 4524) [ClassicSimilarity], result of:
           0.54424155 = score(doc=4524,freq=1.0), product of:
             0.35756892 = queryWeight, product of:
               1.1702788 = boost
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.062731914 = queryNorm
             1.5220605 = fieldWeight in 4524, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.3125 = fieldNorm(doc=4524)
         0.69715077 = weight(abstract_txt:engines in 4524) [ClassicSimilarity], result of:
           0.69715077 = score(doc=4524,freq=1.0), product of:
             0.42174485 = queryWeight, product of:
               1.2709672 = boost
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.062731914 = queryNorm
             1.6530155 = fieldWeight in 4524, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.3125 = fieldNorm(doc=4524)
         0.45982736 = weight(abstract_txt:search in 4524) [ClassicSimilarity], result of:
           0.45982736 = score(doc=4524,freq=1.0), product of:
             0.40262914 = queryWeight, product of:
               1.7562125 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.062731914 = queryNorm
             1.1420618 = fieldWeight in 4524, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.3125 = fieldNorm(doc=4524)
       0.375 = coord(3/8)
   

5. Mowshowitz, A.; Kawaguchi, A.: Assessing bias in search engines (2002) 0.61

   0.6052867 = sum of:
     0.6052867 = product of:
       0.9684588 = sum of:
         0.102167115 = weight(abstract_txt:world in 3574) [ClassicSimilarity], result of:
           0.102167115 = score(doc=3574,freq=1.0), product of:
             0.2954015 = queryWeight, product of:
               1.0636919 = boost
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.062731914 = queryNorm
             0.34585845 = fieldWeight in 3574, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.078125 = fieldNorm(doc=3574)
         0.13606039 = weight(abstract_txt:wide in 3574) [ClassicSimilarity], result of:
           0.13606039 = score(doc=3574,freq=1.0), product of:
             0.35756892 = queryWeight, product of:
               1.1702788 = boost
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.062731914 = queryNorm
             0.38051513 = fieldWeight in 3574, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8705935 = idf(docFreq=925, maxDocs=44421)
               0.078125 = fieldNorm(doc=3574)
         0.30187514 = weight(abstract_txt:engines in 3574) [ClassicSimilarity], result of:
           0.30187514 = score(doc=3574,freq=3.0), product of:
             0.42174485 = queryWeight, product of:
               1.2709672 = boost
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.062731914 = queryNorm
             0.7157767 = fieldWeight in 3574, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.2896495 = idf(docFreq=608, maxDocs=44421)
               0.078125 = fieldNorm(doc=3574)
         0.19844246 = weight(abstract_txt:precision in 3574) [ClassicSimilarity], result of:
           0.19844246 = score(doc=3574,freq=1.0), product of:
             0.4598629 = queryWeight, product of:
               1.3271611 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.062731914 = queryNorm
             0.43152526 = fieldWeight in 3574, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.078125 = fieldNorm(doc=3574)
         0.22991368 = weight(abstract_txt:search in 3574) [ClassicSimilarity], result of:
           0.22991368 = score(doc=3574,freq=4.0), product of:
             0.40262914 = queryWeight, product of:
               1.7562125 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.062731914 = queryNorm
             0.5710309 = fieldWeight in 3574, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.078125 = fieldNorm(doc=3574)
       0.625 = coord(5/8)