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

   6.190705 = sum of:
     6.190705 = weight(author_txt:srivastava in 6250) [ClassicSimilarity], result of:
       6.190705 = fieldWeight in 6250, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.905128 = idf(docFreq=5, maxDocs=44218)
         0.625 = fieldNorm(doc=6250)
   

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

   4.377489 = sum of:
     4.377489 = weight(author_txt:srivastava in 2530) [ClassicSimilarity], result of:
       4.377489 = fieldWeight in 2530, product of:
         1.4142135 = tf(freq=2.0), with freq of:
           2.0 = termFreq=2.0
         9.905128 = idf(docFreq=5, maxDocs=44218)
         0.3125 = fieldNorm(doc=2530)
   

3. Bhargava, J.K.; Srivastava, R.K.; Murthy, S.S.: SANJAY: an Indian library automation package based on CDS/ISIS (1993) 3.71

   3.7144227 = sum of:
     3.7144227 = weight(author_txt:srivastava in 5041) [ClassicSimilarity], result of:
       3.7144227 = fieldWeight in 5041, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.905128 = idf(docFreq=5, maxDocs=44218)
         0.375 = fieldNorm(doc=5041)
   

4. Lee, D.; Srivastava, S.; Vista, D.: Generating advanced query interfaces (1998) 3.71

   3.7144227 = sum of:
     3.7144227 = weight(author_txt:srivastava in 3607) [ClassicSimilarity], result of:
       3.7144227 = fieldWeight in 3607, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         9.905128 = idf(docFreq=5, maxDocs=44218)
         0.375 = fieldNorm(doc=3607)
   

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

   0.85272306 = sum of:
     0.85272306 = product of:
       1.1369641 = sum of:
         0.103190176 = weight(abstract_txt:first in 993) [ClassicSimilarity], result of:
           0.103190176 = score(doc=993,freq=3.0), product of:
             0.26137263 = queryWeight, product of:
               4.168018 = idf(docFreq=1860, maxDocs=44218)
               0.06270909 = queryNorm
             0.39480102 = fieldWeight in 993, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.168018 = idf(docFreq=1860, maxDocs=44218)
               0.0546875 = fieldNorm(doc=993)
         0.0716026 = weight(abstract_txt:world in 993) [ClassicSimilarity], result of:
           0.0716026 = score(doc=993,freq=1.0), product of:
             0.2954569 = queryWeight, product of:
               1.063205 = boost
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.06270909 = queryNorm
             0.24234533 = fieldWeight in 993, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.0546875 = fieldNorm(doc=993)
         0.07624496 = weight(abstract_txt:among in 993) [ClassicSimilarity], result of:
           0.07624496 = score(doc=993,freq=1.0), product of:
             0.30809337 = queryWeight, product of:
               1.0857033 = boost
               4.5252304 = idf(docFreq=1301, maxDocs=44218)
               0.06270909 = queryNorm
             0.24747354 = fieldWeight in 993, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5252304 = idf(docFreq=1301, maxDocs=44218)
               0.0546875 = fieldNorm(doc=993)
         0.09505332 = weight(abstract_txt:wide in 993) [ClassicSimilarity], result of:
           0.09505332 = score(doc=993,freq=1.0), product of:
             0.356878 = queryWeight, product of:
               1.168503 = boost
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.06270909 = queryNorm
             0.2663468 = fieldWeight in 993, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.0546875 = fieldNorm(doc=993)
         0.45875442 = weight(abstract_txt:engines in 993) [ClassicSimilarity], result of:
           0.45875442 = score(doc=993,freq=14.0), product of:
             0.42288187 = queryWeight, product of:
               1.2719777 = boost
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.06270909 = queryNorm
             1.0848287 = fieldWeight in 993, product of:
               3.7416575 = tf(freq=14.0), with freq of:
                 14.0 = termFreq=14.0
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.0546875 = fieldNorm(doc=993)
         0.33211863 = weight(abstract_txt:search in 993) [ClassicSimilarity], result of:
           0.33211863 = score(doc=993,freq=17.0), product of:
             0.40265286 = queryWeight, product of:
               1.755296 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.06270909 = queryNorm
             0.82482624 = fieldWeight in 993, product of:
               4.1231055 = tf(freq=17.0), with freq of:
                 17.0 = termFreq=17.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.0546875 = fieldNorm(doc=993)
       0.75 = coord(6/8)
   

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

   0.74713665 = sum of:
     0.74713665 = product of:
       1.4942733 = sum of:
         0.28931817 = weight(abstract_txt:world in 5654) [ClassicSimilarity], result of:
           0.28931817 = score(doc=5654,freq=2.0), product of:
             0.2954569 = queryWeight, product of:
               1.063205 = boost
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.06270909 = queryNorm
             0.979223 = fieldWeight in 5654, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.15625 = fieldNorm(doc=5654)
         0.38407344 = weight(abstract_txt:wide in 5654) [ClassicSimilarity], result of:
           0.38407344 = score(doc=5654,freq=2.0), product of:
             0.356878 = queryWeight, product of:
               1.168503 = boost
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.06270909 = queryNorm
             1.0762037 = fieldWeight in 5654, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.15625 = fieldNorm(doc=5654)
         0.49540818 = weight(abstract_txt:engines in 5654) [ClassicSimilarity], result of:
           0.49540818 = score(doc=5654,freq=2.0), product of:
             0.42288187 = queryWeight, product of:
               1.2719777 = boost
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.06270909 = queryNorm
             1.1715049 = fieldWeight in 5654, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.15625 = fieldNorm(doc=5654)
         0.32547358 = weight(abstract_txt:search in 5654) [ClassicSimilarity], result of:
           0.32547358 = score(doc=5654,freq=2.0), product of:
             0.40265286 = queryWeight, product of:
               1.755296 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.06270909 = queryNorm
             0.808323 = fieldWeight in 5654, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.15625 = fieldNorm(doc=5654)
       0.5 = coord(4/8)
   

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

   0.63917357 = sum of:
     0.63917357 = product of:
       0.73048407 = sum of:
         0.06808786 = weight(abstract_txt:first in 1981) [ClassicSimilarity], result of:
           0.06808786 = score(doc=1981,freq=1.0), product of:
             0.26137263 = queryWeight, product of:
               4.168018 = idf(docFreq=1860, maxDocs=44218)
               0.06270909 = queryNorm
             0.26050112 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.168018 = idf(docFreq=1860, maxDocs=44218)
               0.0625 = fieldNorm(doc=1981)
         0.069486186 = weight(abstract_txt:services in 1981) [ClassicSimilarity], result of:
           0.069486186 = score(doc=1981,freq=1.0), product of:
             0.26493904 = queryWeight, product of:
               1.0067993 = boost
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.06270909 = queryNorm
             0.26227236 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.1963577 = idf(docFreq=1808, maxDocs=44218)
               0.0625 = fieldNorm(doc=1981)
         0.08183154 = weight(abstract_txt:world in 1981) [ClassicSimilarity], result of:
           0.08183154 = score(doc=1981,freq=1.0), product of:
             0.2954569 = queryWeight, product of:
               1.063205 = boost
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.06270909 = queryNorm
             0.2769661 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.0625 = fieldNorm(doc=1981)
         0.087137096 = weight(abstract_txt:among in 1981) [ClassicSimilarity], result of:
           0.087137096 = score(doc=1981,freq=1.0), product of:
             0.30809337 = queryWeight, product of:
               1.0857033 = boost
               4.5252304 = idf(docFreq=1301, maxDocs=44218)
               0.06270909 = queryNorm
             0.2828269 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.5252304 = idf(docFreq=1301, maxDocs=44218)
               0.0625 = fieldNorm(doc=1981)
         0.15362936 = weight(abstract_txt:wide in 1981) [ClassicSimilarity], result of:
           0.15362936 = score(doc=1981,freq=2.0), product of:
             0.356878 = queryWeight, product of:
               1.168503 = boost
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.06270909 = queryNorm
             0.43048146 = fieldWeight in 1981, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.0625 = fieldNorm(doc=1981)
         0.14012259 = weight(abstract_txt:engines in 1981) [ClassicSimilarity], result of:
           0.14012259 = score(doc=1981,freq=1.0), product of:
             0.42288187 = queryWeight, product of:
               1.2719777 = boost
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.06270909 = queryNorm
             0.3313516 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.0625 = fieldNorm(doc=1981)
         0.13018943 = weight(abstract_txt:search in 1981) [ClassicSimilarity], result of:
           0.13018943 = score(doc=1981,freq=2.0), product of:
             0.40265286 = queryWeight, product of:
               1.755296 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.06270909 = queryNorm
             0.3233292 = fieldWeight in 1981, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.0625 = fieldNorm(doc=1981)
       0.875 = coord(7/8)
   

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

   0.639024 = sum of:
     0.639024 = product of:
       1.704064 = sum of:
         0.54316187 = weight(abstract_txt:wide in 3524) [ClassicSimilarity], result of:
           0.54316187 = score(doc=3524,freq=1.0), product of:
             0.356878 = queryWeight, product of:
               1.168503 = boost
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.06270909 = queryNorm
             1.5219818 = fieldWeight in 3524, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.3125 = fieldNorm(doc=3524)
         0.70061296 = weight(abstract_txt:engines in 3524) [ClassicSimilarity], result of:
           0.70061296 = score(doc=3524,freq=1.0), product of:
             0.42288187 = queryWeight, product of:
               1.2719777 = boost
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.06270909 = queryNorm
             1.6567581 = fieldWeight in 3524, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.3125 = fieldNorm(doc=3524)
         0.46028915 = weight(abstract_txt:search in 3524) [ClassicSimilarity], result of:
           0.46028915 = score(doc=3524,freq=1.0), product of:
             0.40265286 = queryWeight, product of:
               1.755296 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.06270909 = queryNorm
             1.1431414 = fieldWeight in 3524, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.3125 = fieldNorm(doc=3524)
       0.375 = coord(3/8)
   

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

   0.6061608 = sum of:
     0.6061608 = product of:
       0.9698573 = sum of:
         0.10228942 = weight(abstract_txt:world in 2574) [ClassicSimilarity], result of:
           0.10228942 = score(doc=2574,freq=1.0), product of:
             0.2954569 = queryWeight, product of:
               1.063205 = boost
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.06270909 = queryNorm
             0.34620762 = fieldWeight in 2574, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4314575 = idf(docFreq=1429, maxDocs=44218)
               0.078125 = fieldNorm(doc=2574)
         0.13579047 = weight(abstract_txt:wide in 2574) [ClassicSimilarity], result of:
           0.13579047 = score(doc=2574,freq=1.0), product of:
             0.356878 = queryWeight, product of:
               1.168503 = boost
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.06270909 = queryNorm
             0.38049546 = fieldWeight in 2574, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.870342 = idf(docFreq=921, maxDocs=44218)
               0.078125 = fieldNorm(doc=2574)
         0.3033743 = weight(abstract_txt:engines in 2574) [ClassicSimilarity], result of:
           0.3033743 = score(doc=2574,freq=3.0), product of:
             0.42288187 = queryWeight, product of:
               1.2719777 = boost
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.06270909 = queryNorm
             0.7173973 = fieldWeight in 2574, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.3016257 = idf(docFreq=598, maxDocs=44218)
               0.078125 = fieldNorm(doc=2574)
         0.1982585 = weight(abstract_txt:precision in 2574) [ClassicSimilarity], result of:
           0.1982585 = score(doc=2574,freq=1.0), product of:
             0.4592983 = queryWeight, product of:
               1.3256149 = boost
               5.5251865 = idf(docFreq=478, maxDocs=44218)
               0.06270909 = queryNorm
             0.4316552 = fieldWeight in 2574, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5251865 = idf(docFreq=478, maxDocs=44218)
               0.078125 = fieldNorm(doc=2574)
         0.23014458 = weight(abstract_txt:search in 2574) [ClassicSimilarity], result of:
           0.23014458 = score(doc=2574,freq=4.0), product of:
             0.40265286 = queryWeight, product of:
               1.755296 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.06270909 = queryNorm
             0.5715707 = fieldWeight in 2574, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.078125 = fieldNorm(doc=2574)
       0.625 = coord(5/8)