Document (#16491)

Author
Chu, H.
Rosenthal, M.
Title
Search engines for the World Wide Web : a comparative study and evaluation methodology
Source
Global complexity: information, chaos and control. Proceedings of the 59th Annual Meeting of the American Society for Information Science, ASIS'96, Baltimore, Maryland, 21-24 Oct 1996. Ed.: S. Hardin
Imprint
Medford, NJ : Learned Information
Year
1996
Pages
S.127-135
Abstract
Compares 3 WWW search engines (AltaVista, Excite, and Lycos) in terms of their search capabilities and retrieval performances using sample queires drawn from real reference questions. AltaVista outperformed Excite and Lycos in both search facilities and retrieval performance although Lycos had the largest coverage of WWW resources among the 3 WWW search engines examined. Proposes a methodology for evaluating other WWW search engines
Theme
Suchmaschinen
Object
AltaVista
Lycos
Excite

Similar documents (content)

  1. Clarke, S.J.; Willett, P.: Estimating the recall performance of Web search engines (1997) 0.53 
    0.5339787 = sum of:
  0.5339787 = product of:
    1.6686835 = sum of:
      0.06663941 = weight(abstract_txt:evaluating in 1758) [ClassicSimilarity], result of:
        0.06663941 = score(doc=1758,freq=1.0), product of:
          0.1040463 = queryWeight, product of:
            1.2198594 = boost
            5.8558025 = idf(docFreq=338, maxDocs=43556)
            0.014565669 = queryNorm
          0.6404784 = fieldWeight in 1758, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.8558025 = idf(docFreq=338, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
      0.08756841 = weight(abstract_txt:comparative in 1758) [ClassicSimilarity], result of:
        0.08756841 = score(doc=1758,freq=1.0), product of:
          0.12482575 = queryWeight, product of:
            1.3361294 = boost
            6.4139447 = idf(docFreq=193, maxDocs=43556)
            0.014565669 = queryNorm
          0.7015252 = fieldWeight in 1758, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.4139447 = idf(docFreq=193, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
      0.027825126 = weight(abstract_txt:retrieval in 1758) [ClassicSimilarity], result of:
        0.027825126 = score(doc=1758,freq=1.0), product of:
          0.07323308 = queryWeight, product of:
            1.4473218 = boost
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.014565669 = queryNorm
          0.37995297 = fieldWeight in 1758, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4738557 = idf(docFreq=3669, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
      0.26366556 = weight(abstract_txt:altavista in 1758) [ClassicSimilarity], result of:
        0.26366556 = score(doc=1758,freq=1.0), product of:
          0.32793278 = queryWeight, product of:
            3.0626957 = boost
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.014565669 = queryNorm
          0.8040232 = fieldWeight in 1758, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
      0.3043829 = weight(abstract_txt:excite in 1758) [ClassicSimilarity], result of:
        0.3043829 = score(doc=1758,freq=1.0), product of:
          0.3608799 = queryWeight, product of:
            3.2128673 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014565669 = queryNorm
          0.8434465 = fieldWeight in 1758, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
      0.34132764 = weight(abstract_txt:engines in 1758) [ClassicSimilarity], result of:
        0.34132764 = score(doc=1758,freq=3.0), product of:
          0.3402774 = queryWeight, product of:
            4.412076 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014565669 = queryNorm
          1.0030864 = fieldWeight in 1758, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
      0.16835344 = weight(abstract_txt:search in 1758) [ClassicSimilarity], result of:
        0.16835344 = score(doc=1758,freq=3.0), product of:
          0.24316284 = queryWeight, product of:
            4.567943 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014565669 = queryNorm
          0.69234854 = fieldWeight in 1758, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
      0.408921 = weight(abstract_txt:lycos in 1758) [ClassicSimilarity], result of:
        0.408921 = score(doc=1758,freq=1.0), product of:
          0.5029667 = queryWeight, product of:
            4.645438 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014565669 = queryNorm
          0.813018 = fieldWeight in 1758, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.109375 = fieldNorm(doc=1758)
    0.32 = coord(8/25)
  2. Notess, G.R.: Measuring the size of Internet databases (1997) 0.47 
    0.47132307 = sum of:
  0.47132307 = product of:
    1.6832967 = sum of:
      0.10705958 = weight(abstract_txt:compares in 2459) [ClassicSimilarity], result of:
        0.10705958 = score(doc=2459,freq=2.0), product of:
          0.103629865 = queryWeight, product of:
            1.2174157 = boost
            5.8440723 = idf(docFreq=342, maxDocs=43556)
            0.014565669 = queryNorm
          1.0330958 = fieldWeight in 2459, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.8440723 = idf(docFreq=342, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.123398244 = weight(abstract_txt:largest in 2459) [ClassicSimilarity], result of:
        0.123398244 = score(doc=2459,freq=1.0), product of:
          0.1435326 = queryWeight, product of:
            1.4327543 = boost
            6.877782 = idf(docFreq=121, maxDocs=43556)
            0.014565669 = queryNorm
          0.85972273 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.877782 = idf(docFreq=121, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.3013321 = weight(abstract_txt:altavista in 2459) [ClassicSimilarity], result of:
        0.3013321 = score(doc=2459,freq=1.0), product of:
          0.32793278 = queryWeight, product of:
            3.0626957 = boost
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.014565669 = queryNorm
          0.9188837 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.34786615 = weight(abstract_txt:excite in 2459) [ClassicSimilarity], result of:
        0.34786615 = score(doc=2459,freq=1.0), product of:
          0.3608799 = queryWeight, product of:
            3.2128673 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014565669 = queryNorm
          0.96393883 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.22521785 = weight(abstract_txt:engines in 2459) [ClassicSimilarity], result of:
        0.22521785 = score(doc=2459,freq=1.0), product of:
          0.3402774 = queryWeight, product of:
            4.412076 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014565669 = queryNorm
          0.6618654 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.11108446 = weight(abstract_txt:search in 2459) [ClassicSimilarity], result of:
        0.11108446 = score(doc=2459,freq=1.0), product of:
          0.24316284 = queryWeight, product of:
            4.567943 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014565669 = queryNorm
          0.45683157 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.4673383 = weight(abstract_txt:lycos in 2459) [ClassicSimilarity], result of:
        0.4673383 = score(doc=2459,freq=1.0), product of:
          0.5029667 = queryWeight, product of:
            4.645438 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014565669 = queryNorm
          0.92916346 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
    0.28 = coord(7/25)
  3. Feldman, S.: "Just the answer, please" : choosing a Web search service (1997) 0.45 
    0.449838 = sum of:
  0.449838 = product of:
    1.6065643 = sum of:
      0.03917125 = weight(abstract_txt:questions in 1768) [ClassicSimilarity], result of:
        0.03917125 = score(doc=1768,freq=1.0), product of:
          0.0730103 = queryWeight, product of:
            1.0218532 = boost
            4.905296 = idf(docFreq=876, maxDocs=43556)
            0.014565669 = queryNorm
          0.5365167 = fieldWeight in 1768, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.905296 = idf(docFreq=876, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.049935177 = weight(abstract_txt:real in 1768) [ClassicSimilarity], result of:
        0.049935177 = score(doc=1768,freq=1.0), product of:
          0.085837476 = queryWeight, product of:
            1.1079876 = boost
            5.3187747 = idf(docFreq=579, maxDocs=43556)
            0.014565669 = queryNorm
          0.581741 = fieldWeight in 1768, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.3187747 = idf(docFreq=579, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.26366556 = weight(abstract_txt:altavista in 1768) [ClassicSimilarity], result of:
        0.26366556 = score(doc=1768,freq=1.0), product of:
          0.32793278 = queryWeight, product of:
            3.0626957 = boost
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.014565669 = queryNorm
          0.8040232 = fieldWeight in 1768, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.4304624 = weight(abstract_txt:excite in 1768) [ClassicSimilarity], result of:
        0.4304624 = score(doc=1768,freq=2.0), product of:
          0.3608799 = queryWeight, product of:
            3.2128673 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014565669 = queryNorm
          1.1928134 = fieldWeight in 1768, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.19706562 = weight(abstract_txt:engines in 1768) [ClassicSimilarity], result of:
        0.19706562 = score(doc=1768,freq=1.0), product of:
          0.3402774 = queryWeight, product of:
            4.412076 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014565669 = queryNorm
          0.57913226 = fieldWeight in 1768, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.21734336 = weight(abstract_txt:search in 1768) [ClassicSimilarity], result of:
        0.21734336 = score(doc=1768,freq=5.0), product of:
          0.24316284 = queryWeight, product of:
            4.567943 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014565669 = queryNorm
          0.89381814 = fieldWeight in 1768, product of:
            2.236068 = tf(freq=5.0), with freq of:
              5.0 = termFreq=5.0
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.408921 = weight(abstract_txt:lycos in 1768) [ClassicSimilarity], result of:
        0.408921 = score(doc=1768,freq=1.0), product of:
          0.5029667 = queryWeight, product of:
            4.645438 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014565669 = queryNorm
          0.813018 = fieldWeight in 1768, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
    0.28 = coord(7/25)
  4. Fryxell, D.A.: ¬9 Web search sites examined (1996) 0.44 
    0.43585163 = sum of:
  0.43585163 = product of:
    2.179258 = sum of:
      0.45199808 = weight(abstract_txt:altavista in 5207) [ClassicSimilarity], result of:
        0.45199808 = score(doc=5207,freq=1.0), product of:
          0.32793278 = queryWeight, product of:
            3.0626957 = boost
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.014565669 = queryNorm
          1.3783255 = fieldWeight in 5207, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.1875 = fieldNorm(doc=5207)
      0.52179927 = weight(abstract_txt:excite in 5207) [ClassicSimilarity], result of:
        0.52179927 = score(doc=5207,freq=1.0), product of:
          0.3608799 = queryWeight, product of:
            3.2128673 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014565669 = queryNorm
          1.4459083 = fieldWeight in 5207, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.1875 = fieldNorm(doc=5207)
      0.33782676 = weight(abstract_txt:engines in 5207) [ClassicSimilarity], result of:
        0.33782676 = score(doc=5207,freq=1.0), product of:
          0.3402774 = queryWeight, product of:
            4.412076 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014565669 = queryNorm
          0.9927981 = fieldWeight in 5207, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.1875 = fieldNorm(doc=5207)
      0.16662669 = weight(abstract_txt:search in 5207) [ClassicSimilarity], result of:
        0.16662669 = score(doc=5207,freq=1.0), product of:
          0.24316284 = queryWeight, product of:
            4.567943 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014565669 = queryNorm
          0.68524736 = fieldWeight in 5207, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.1875 = fieldNorm(doc=5207)
      0.7010074 = weight(abstract_txt:lycos in 5207) [ClassicSimilarity], result of:
        0.7010074 = score(doc=5207,freq=1.0), product of:
          0.5029667 = queryWeight, product of:
            4.645438 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014565669 = queryNorm
          1.3937452 = fieldWeight in 5207, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.1875 = fieldNorm(doc=5207)
    0.2 = coord(5/25)
  5. Courlois, M.P.: Cool tools for Web searching : an update (1996) 0.44 
    0.43585163 = sum of:
  0.43585163 = product of:
    2.179258 = sum of:
      0.45199808 = weight(abstract_txt:altavista in 5209) [ClassicSimilarity], result of:
        0.45199808 = score(doc=5209,freq=1.0), product of:
          0.32793278 = queryWeight, product of:
            3.0626957 = boost
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.014565669 = queryNorm
          1.3783255 = fieldWeight in 5209, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.3510695 = idf(docFreq=75, maxDocs=43556)
            0.1875 = fieldNorm(doc=5209)
      0.52179927 = weight(abstract_txt:excite in 5209) [ClassicSimilarity], result of:
        0.52179927 = score(doc=5209,freq=1.0), product of:
          0.3608799 = queryWeight, product of:
            3.2128673 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014565669 = queryNorm
          1.4459083 = fieldWeight in 5209, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.1875 = fieldNorm(doc=5209)
      0.33782676 = weight(abstract_txt:engines in 5209) [ClassicSimilarity], result of:
        0.33782676 = score(doc=5209,freq=1.0), product of:
          0.3402774 = queryWeight, product of:
            4.412076 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014565669 = queryNorm
          0.9927981 = fieldWeight in 5209, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.1875 = fieldNorm(doc=5209)
      0.16662669 = weight(abstract_txt:search in 5209) [ClassicSimilarity], result of:
        0.16662669 = score(doc=5209,freq=1.0), product of:
          0.24316284 = queryWeight, product of:
            4.567943 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014565669 = queryNorm
          0.68524736 = fieldWeight in 5209, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.1875 = fieldNorm(doc=5209)
      0.7010074 = weight(abstract_txt:lycos in 5209) [ClassicSimilarity], result of:
        0.7010074 = score(doc=5209,freq=1.0), product of:
          0.5029667 = queryWeight, product of:
            4.645438 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014565669 = queryNorm
          1.3937452 = fieldWeight in 5209, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.1875 = fieldNorm(doc=5209)
    0.2 = coord(5/25)