Document (#29259)

Author

Vidmar, D.
Anderson, C.

Title

History of Internet search tools

Source

Encyclopedia of library and information science. Vol.71, [=Suppl.34]

Imprint

New York : Dekker

Year

2002

Pages

S.146-162

Abstract

Finding information an the Internet and the World Wide Web (WWW) has always been somewhat like trying to find a needle in a haystack. An added dimension to the haystack metaphor is that the Internet environment is a dynamic collection of information. Changes occur almost every second. New pages are added. Old pages are deleted or altered. From the very beginning of the World Wide Web (WWW), search tools were needed to create order and provide an interface that allowed users to retrieve current documents while at the same time deleting inactive sites. Search databases and indexes could not be static; neither could the interface that served as the public relations instrument for the product. The tools of Internet searching emerged from the simple and modest beginnings of research and graduate school projects to the highly competitive and highly secretive proprietary corporate environment. As search tools evolved, they changed not only how people find information, but also how they viewed the world of the twenty-first century. The Internet grew out of a need to connect computers at one location to computers at other locations, thus creating a globalization of shared resources. The early iterations of shared data were basic but grew rapidly as more and more computers became connected. Connectivity led to an information base that multiplied and evolved exponentially. This information base ultimately became unwieldy, and some of the early Internet pioneers began to see the necessity for both an organizational scheme and a method for accessing what was available. Each new tool provided more order, and in general an improved searching mechanism. From the early beginnings of Telnet, File Transfer Protocol (FTP), Archie, Veronica, and Gopher to the current iterations of Web search engines and search directories that use graphical interfaces, spiders, worms, robots, complex algorithms, proprietary information, competing interfaces, and advertising, access to the vast store of materials that is the Internet has depended upon search tools.

Footnote

Übersichtsartikel zum Thema Suchmaschinen

Theme

Suchmaschinen

Similar documents (author)

1. Anderson, J.D.: Indexing, teaching of, See: Information retrieval design (2002) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:anderson in 549) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 549, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=549)
   

2. Anderson, J.D.: Indexing and classification : file organization and display for information retrieval (1989) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:anderson in 872) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 872, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=872)
   

3. Anderson, M.D.: Book indexing (1971) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:anderson in 2741) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 2741, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=2741)
   

4. Anderson, B.: CD-ROM LANs : a new challenge for reference librarians (1992) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:anderson in 3950) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 3950, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=3950)
   

5. Anderson, C.: Reference on disc : the New Grolier Electronic Encyclopedia (1991) 4.76

   4.7649565 = sum of:
     4.7649565 = weight(author_txt:anderson in 4936) [ClassicSimilarity], result of:
       4.7649565 = fieldWeight in 4936, product of:
         1.0 = tf(freq=1.0), with freq of:
           1.0 = termFreq=1.0
         7.62393 = idf(docFreq=58, maxDocs=44421)
         0.625 = fieldNorm(doc=4936)
   

Similar documents (content)

1. Vidmar, D.J.; Anderson-Cahoon, C.J.: Internet search tools : history to 2000 (2009) 0.77

   0.7705527 = sum of:
     0.7705527 = product of:
       1.6053182 = sum of:
         0.19055855 = weight(abstract_txt:worms in 811) [ClassicSimilarity], result of:
           0.19055855 = score(doc=811,freq=1.0), product of:
             0.20835556 = queryWeight, product of:
               9.755557 = idf(docFreq=6, maxDocs=44421)
               0.021357628 = queryNorm
             0.91458344 = fieldWeight in 811, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.755557 = idf(docFreq=6, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.024120428 = weight(abstract_txt:more in 811) [ClassicSimilarity], result of:
           0.024120428 = score(doc=811,freq=1.0), product of:
             0.07575592 = queryWeight, product of:
               1.0443988 = boost
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.021357628 = queryNorm
             0.31839663 = fieldWeight in 811, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.094151065 = weight(abstract_txt:interfaces in 811) [ClassicSimilarity], result of:
           0.094151065 = score(doc=811,freq=2.0), product of:
             0.13021758 = queryWeight, product of:
               1.1180141 = boost
               5.453425 = idf(docFreq=516, maxDocs=44421)
               0.021357628 = queryNorm
             0.72302884 = fieldWeight in 811, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.453425 = idf(docFreq=516, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.023035422 = weight(abstract_txt:that in 811) [ClassicSimilarity], result of:
           0.023035422 = score(doc=811,freq=2.0), product of:
             0.07346672 = queryWeight, product of:
               1.4545157 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.021357628 = queryNorm
             0.31354907 = fieldWeight in 811, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.01742918 = weight(abstract_txt:information in 811) [ClassicSimilarity], result of:
           0.01742918 = score(doc=811,freq=1.0), product of:
             0.07685778 = queryWeight, product of:
               1.4877056 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.021357628 = queryNorm
             0.22677183 = fieldWeight in 811, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.18968756 = weight(abstract_txt:proprietary in 811) [ClassicSimilarity], result of:
           0.18968756 = score(doc=811,freq=1.0), product of:
             0.26171103 = queryWeight, product of:
               1.5849788 = boost
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.021357628 = queryNorm
             0.7247977 = fieldWeight in 811, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.15032195 = weight(abstract_txt:early in 811) [ClassicSimilarity], result of:
           0.15032195 = score(doc=811,freq=2.0), product of:
             0.20362517 = queryWeight, product of:
               1.7122762 = boost
               5.5680695 = idf(docFreq=460, maxDocs=44421)
               0.021357628 = queryNorm
             0.7382287 = fieldWeight in 811, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5680695 = idf(docFreq=460, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.25800753 = weight(abstract_txt:beginnings in 811) [ClassicSimilarity], result of:
           0.25800753 = score(doc=811,freq=1.0), product of:
             0.3212805 = queryWeight, product of:
               1.7561219 = boost
               8.565973 = idf(docFreq=22, maxDocs=44421)
               0.021357628 = queryNorm
             0.80306 = fieldWeight in 811, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.565973 = idf(docFreq=22, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.3055156 = weight(abstract_txt:iterations in 811) [ClassicSimilarity], result of:
           0.3055156 = score(doc=811,freq=1.0), product of:
             0.3595989 = queryWeight, product of:
               1.857897 = boost
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.021357628 = queryNorm
             0.849601 = fieldWeight in 811, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.0903531 = weight(abstract_txt:tools in 811) [ClassicSimilarity], result of:
           0.0903531 = score(doc=811,freq=1.0), product of:
             0.21663977 = queryWeight, product of:
               2.2800877 = boost
               4.448705 = idf(docFreq=1411, maxDocs=44421)
               0.021357628 = queryNorm
             0.4170661 = fieldWeight in 811, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.448705 = idf(docFreq=1411, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.15681012 = weight(abstract_txt:search in 811) [ClassicSimilarity], result of:
           0.15681012 = score(doc=811,freq=5.0), product of:
             0.2046813 = queryWeight, product of:
               2.6223192 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.021357628 = queryNorm
             0.7661184 = fieldWeight in 811, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
         0.10532767 = weight(abstract_txt:internet in 811) [ClassicSimilarity], result of:
           0.10532767 = score(doc=811,freq=2.0), product of:
             0.21306092 = queryWeight, product of:
               2.6754594 = boost
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.021357628 = queryNorm
             0.49435472 = fieldWeight in 811, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.09375 = fieldNorm(doc=811)
       0.48 = coord(12/25)
   

2. Priss, U.: Alternatives to the "Semantic Web" : multi-strategy knowledge representation (2003) 0.17

   0.17158853 = sum of:
     0.17158853 = product of:
       0.38997394 = sum of:
         0.023889694 = weight(abstract_txt:find in 3733) [ClassicSimilarity], result of:
           0.023889694 = score(doc=3733,freq=1.0), product of:
             0.10438142 = queryWeight, product of:
               1.0009769 = boost
               4.8825436 = idf(docFreq=914, maxDocs=44421)
               0.021357628 = queryNorm
             0.22886923 = fieldWeight in 3733, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.8825436 = idf(docFreq=914, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.017055716 = weight(abstract_txt:more in 3733) [ClassicSimilarity], result of:
           0.017055716 = score(doc=3733,freq=2.0), product of:
             0.07575592 = queryWeight, product of:
               1.0443988 = boost
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.021357628 = queryNorm
             0.2251404 = fieldWeight in 3733, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3962307 = idf(docFreq=4044, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.03328743 = weight(abstract_txt:interfaces in 3733) [ClassicSimilarity], result of:
           0.03328743 = score(doc=3733,freq=1.0), product of:
             0.13021758 = queryWeight, product of:
               1.1180141 = boost
               5.453425 = idf(docFreq=516, maxDocs=44421)
               0.021357628 = queryNorm
             0.2556293 = fieldWeight in 3733, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.453425 = idf(docFreq=516, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.036153354 = weight(abstract_txt:pages in 3733) [ClassicSimilarity], result of:
           0.036153354 = score(doc=3733,freq=1.0), product of:
             0.13758841 = queryWeight, product of:
               1.1492206 = boost
               5.6056433 = idf(docFreq=443, maxDocs=44421)
               0.021357628 = queryNorm
             0.2627645 = fieldWeight in 3733, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6056433 = idf(docFreq=443, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.03887751 = weight(abstract_txt:shared in 3733) [ClassicSimilarity], result of:
           0.03887751 = score(doc=3733,freq=1.0), product of:
             0.14441592 = queryWeight, product of:
               1.177389 = boost
               5.743043 = idf(docFreq=386, maxDocs=44421)
               0.021357628 = queryNorm
             0.26920515 = fieldWeight in 3733, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.743043 = idf(docFreq=386, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.037774917 = weight(abstract_txt:world in 3733) [ClassicSimilarity], result of:
           0.037774917 = score(doc=3733,freq=2.0), product of:
             0.12871788 = queryWeight, product of:
               1.3613743 = boost
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.021357628 = queryNorm
             0.29347062 = fieldWeight in 3733, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.426988 = idf(docFreq=1442, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.0182111 = weight(abstract_txt:that in 3733) [ClassicSimilarity], result of:
           0.0182111 = score(doc=3733,freq=5.0), product of:
             0.07346672 = queryWeight, product of:
               1.4545157 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.021357628 = queryNorm
             0.2478823 = fieldWeight in 3733, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.02614377 = weight(abstract_txt:information in 3733) [ClassicSimilarity], result of:
           0.02614377 = score(doc=3733,freq=9.0), product of:
             0.07685778 = queryWeight, product of:
               1.4877056 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.021357628 = queryNorm
             0.34015775 = fieldWeight in 3733, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.05314683 = weight(abstract_txt:early in 3733) [ClassicSimilarity], result of:
           0.05314683 = score(doc=3733,freq=1.0), product of:
             0.20362517 = queryWeight, product of:
               1.7122762 = boost
               5.5680695 = idf(docFreq=460, maxDocs=44421)
               0.021357628 = queryNorm
             0.26100326 = fieldWeight in 3733, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5680695 = idf(docFreq=460, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.07036982 = weight(abstract_txt:computers in 3733) [ClassicSimilarity], result of:
           0.07036982 = score(doc=3733,freq=1.0), product of:
             0.24552977 = queryWeight, product of:
               1.8802265 = boost
               6.114219 = idf(docFreq=266, maxDocs=44421)
               0.021357628 = queryNorm
             0.28660402 = fieldWeight in 3733, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.114219 = idf(docFreq=266, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
         0.035063807 = weight(abstract_txt:search in 3733) [ClassicSimilarity], result of:
           0.035063807 = score(doc=3733,freq=1.0), product of:
             0.2046813 = queryWeight, product of:
               2.6223192 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.021357628 = queryNorm
             0.17130928 = fieldWeight in 3733, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.046875 = fieldNorm(doc=3733)
       0.44 = coord(11/25)
   

3. Nicholson, S.: Raising reliability of Web search tool research through replication and chaos theory (2000) 0.14

   0.14495446 = sum of:
     0.14495446 = product of:
       0.7247723 = sum of:
         0.026874658 = weight(abstract_txt:that in 5806) [ClassicSimilarity], result of:
           0.026874658 = score(doc=5806,freq=2.0), product of:
             0.07346672 = queryWeight, product of:
               1.4545157 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.021357628 = queryNorm
             0.36580724 = fieldWeight in 5806, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.109375 = fieldNorm(doc=5806)
         0.02875668 = weight(abstract_txt:information in 5806) [ClassicSimilarity], result of:
           0.02875668 = score(doc=5806,freq=2.0), product of:
             0.07685778 = queryWeight, product of:
               1.4877056 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.021357628 = queryNorm
             0.37415442 = fieldWeight in 5806, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.109375 = fieldNorm(doc=5806)
         0.35643485 = weight(abstract_txt:iterations in 5806) [ClassicSimilarity], result of:
           0.35643485 = score(doc=5806,freq=1.0), product of:
             0.3595989 = queryWeight, product of:
               1.857897 = boost
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.021357628 = queryNorm
             0.99120116 = fieldWeight in 5806, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.06241 = idf(docFreq=13, maxDocs=44421)
               0.109375 = fieldNorm(doc=5806)
         0.14907502 = weight(abstract_txt:tools in 5806) [ClassicSimilarity], result of:
           0.14907502 = score(doc=5806,freq=2.0), product of:
             0.21663977 = queryWeight, product of:
               2.2800877 = boost
               4.448705 = idf(docFreq=1411, maxDocs=44421)
               0.021357628 = queryNorm
             0.68812394 = fieldWeight in 5806, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.448705 = idf(docFreq=1411, maxDocs=44421)
               0.109375 = fieldNorm(doc=5806)
         0.1636311 = weight(abstract_txt:search in 5806) [ClassicSimilarity], result of:
           0.1636311 = score(doc=5806,freq=4.0), product of:
             0.2046813 = queryWeight, product of:
               2.6223192 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.021357628 = queryNorm
             0.7994433 = fieldWeight in 5806, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.109375 = fieldNorm(doc=5806)
       0.2 = coord(5/25)
   

4. Brandt, D.S.: What flavor is your Internet search engine? (1997) 0.14

   0.14130335 = sum of:
     0.14130335 = product of:
       0.70651674 = sum of:
         0.09640894 = weight(abstract_txt:pages in 745) [ClassicSimilarity], result of:
           0.09640894 = score(doc=745,freq=1.0), product of:
             0.13758841 = queryWeight, product of:
               1.1492206 = boost
               5.6056433 = idf(docFreq=443, maxDocs=44421)
               0.021357628 = queryNorm
             0.7007054 = fieldWeight in 745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6056433 = idf(docFreq=443, maxDocs=44421)
               0.125 = fieldNorm(doc=745)
         0.023238907 = weight(abstract_txt:information in 745) [ClassicSimilarity], result of:
           0.023238907 = score(doc=745,freq=1.0), product of:
             0.07685778 = queryWeight, product of:
               1.4877056 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.021357628 = queryNorm
             0.30236244 = fieldWeight in 745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.125 = fieldNorm(doc=745)
         0.25291675 = weight(abstract_txt:proprietary in 745) [ClassicSimilarity], result of:
           0.25291675 = score(doc=745,freq=1.0), product of:
             0.26171103 = queryWeight, product of:
               1.5849788 = boost
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.021357628 = queryNorm
             0.966397 = fieldWeight in 745, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.731176 = idf(docFreq=52, maxDocs=44421)
               0.125 = fieldNorm(doc=745)
         0.1619528 = weight(abstract_txt:search in 745) [ClassicSimilarity], result of:
           0.1619528 = score(doc=745,freq=3.0), product of:
             0.2046813 = queryWeight, product of:
               2.6223192 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.021357628 = queryNorm
             0.7912437 = fieldWeight in 745, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.125 = fieldNorm(doc=745)
         0.17199937 = weight(abstract_txt:internet in 745) [ClassicSimilarity], result of:
           0.17199937 = score(doc=745,freq=3.0), product of:
             0.21306092 = queryWeight, product of:
               2.6754594 = boost
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.021357628 = queryNorm
             0.80727786 = fieldWeight in 745, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.7286568 = idf(docFreq=2900, maxDocs=44421)
               0.125 = fieldNorm(doc=745)
       0.2 = coord(5/25)
   

5. Tenopir, C.: Online systems for information access and retrieval (2008) 0.13

   0.13437685 = sum of:
     0.13437685 = product of:
       0.47991732 = sum of:
         0.055479046 = weight(abstract_txt:interfaces in 587) [ClassicSimilarity], result of:
           0.055479046 = score(doc=587,freq=1.0), product of:
             0.13021758 = queryWeight, product of:
               1.1180141 = boost
               5.453425 = idf(docFreq=516, maxDocs=44421)
               0.021357628 = queryNorm
             0.42604882 = fieldWeight in 587, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.453425 = idf(docFreq=516, maxDocs=44421)
               0.078125 = fieldNorm(doc=587)
         0.15388149 = weight(abstract_txt:evolved in 587) [ClassicSimilarity], result of:
           0.15388149 = score(doc=587,freq=2.0), product of:
             0.20403181 = queryWeight, product of:
               1.3994629 = boost
               6.82627 = idf(docFreq=130, maxDocs=44421)
               0.021357628 = queryNorm
             0.75420344 = fieldWeight in 587, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.82627 = idf(docFreq=130, maxDocs=44421)
               0.078125 = fieldNorm(doc=587)
         0.019196186 = weight(abstract_txt:that in 587) [ClassicSimilarity], result of:
           0.019196186 = score(doc=587,freq=2.0), product of:
             0.07346672 = queryWeight, product of:
               1.4545157 = boost
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.021357628 = queryNorm
             0.2612909 = fieldWeight in 587, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.3649352 = idf(docFreq=11344, maxDocs=44421)
               0.078125 = fieldNorm(doc=587)
         0.029048633 = weight(abstract_txt:information in 587) [ClassicSimilarity], result of:
           0.029048633 = score(doc=587,freq=4.0), product of:
             0.07685778 = queryWeight, product of:
               1.4877056 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.021357628 = queryNorm
             0.37795305 = fieldWeight in 587, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.078125 = fieldNorm(doc=587)
         0.08857805 = weight(abstract_txt:early in 587) [ClassicSimilarity], result of:
           0.08857805 = score(doc=587,freq=1.0), product of:
             0.20362517 = queryWeight, product of:
               1.7122762 = boost
               5.5680695 = idf(docFreq=460, maxDocs=44421)
               0.021357628 = queryNorm
             0.43500543 = fieldWeight in 587, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5680695 = idf(docFreq=460, maxDocs=44421)
               0.078125 = fieldNorm(doc=587)
         0.075294256 = weight(abstract_txt:tools in 587) [ClassicSimilarity], result of:
           0.075294256 = score(doc=587,freq=1.0), product of:
             0.21663977 = queryWeight, product of:
               2.2800877 = boost
               4.448705 = idf(docFreq=1411, maxDocs=44421)
               0.021357628 = queryNorm
             0.3475551 = fieldWeight in 587, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.448705 = idf(docFreq=1411, maxDocs=44421)
               0.078125 = fieldNorm(doc=587)
         0.058439676 = weight(abstract_txt:search in 587) [ClassicSimilarity], result of:
           0.058439676 = score(doc=587,freq=1.0), product of:
             0.2046813 = queryWeight, product of:
               2.6223192 = boost
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.021357628 = queryNorm
             0.28551546 = fieldWeight in 587, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.654598 = idf(docFreq=3123, maxDocs=44421)
               0.078125 = fieldNorm(doc=587)
       0.28 = coord(7/25)