Document (#24545)

Author
Su, L.T.
Chen, H.L.
Title
Evaluation of Web search engines by undergraduate students
Source
Knowledge: creation, organization and use. Proceedings of the 62nd Annual Meeting of the American Society for Information Science, 31.10.-4.11.1999. Ed.: L. Woods
Imprint
Medford, NJ : Information Today
Year
1999
Pages
S.98-114
Series
Proceedings of the American Society for Information Science; vol.36
Abstract
This research continues to explore the user's evaluation of Web search engines using a methodology proposed by Su (1997) and tested in a pilot study (Su, Chen, & Dong, 1998). It seeks to generate useful insight for system design and improvement, and for engine choice. The researchers were interested in how undergraduate students used four selected engines to retrieve information for their studies or personal interests and how they evaluated the interaction and search results retrieved by the four engines. Measures used were based on five evaluation criteria: relevance, efficiency, utility, user satisfaction, and connectivity. Thirty-six undergraduate juniors and seniors were recruited from the disciplines of sciences, social sciences and humanities. Each searched his/her own topic on all four engines in an assigned order and each made relevance judgements of retrieved items in relation to his/her information need or problem. The study found some significant differences among the four engines but none dominated in every aspect of the multidimensional evaluation. Alta Vista had the highest number of relevant and partially relevant documents, the best relative recall and the highest precision ratio based on PR1, Alter Vista had significantly better scores for these three measures than for Lycos. Infoseek had the highest satisfaction rating for response time. Both Infoseek and Excite had significantly higher satisfaction ratings for response time than Lycos. Excite had the best score for output display. Excite and Alta Vista had significantly better scores for output display than Lycos. Excite had the best rating for time saving while Alta Vista achieved the best score for value of search results as a whole and for overall performance. Alta Vista and Excite had significantly better ratings for these three measures than Lycos. Lycos achieved the best relevance ranking performance. Further work will provide more complete picture for engine comparison and choice by taking into account participant characteristics and identify factors contributing to the user's satisfaction to gain better insight for system design and improvement
Theme
Suchmaschinen
Benutzerstudien

Similar documents (author)

  1. Chen, Y.N.; Chen, S.J.: ¬A metadata practice of the OFLA FRBR model : a case study for the National Palace Museum in Taipai (2004) 4.36 
    4.3560195 = sum of:
  4.3560195 = weight(author_txt:chen in 4382) [ClassicSimilarity], result of:
    4.3560195 = fieldWeight in 4382, product of:
      1.4142135 = tf(freq=2.0), with freq of:
        2.0 = termFreq=2.0
      6.1603417 = idf(docFreq=249, maxDocs=43556)
      0.5 = fieldNorm(doc=4382)
  2. Chen, C.C.; Chen, H.H.; Chen, K.H.: ¬The design of the XML/Metadata management system (2000) 4.00 
    4.0012593 = sum of:
  4.0012593 = weight(author_txt:chen in 5631) [ClassicSimilarity], result of:
    4.0012593 = fieldWeight in 5631, product of:
      1.7320508 = tf(freq=3.0), with freq of:
        3.0 = termFreq=3.0
      6.1603417 = idf(docFreq=249, maxDocs=43556)
      0.375 = fieldNorm(doc=5631)
  3. Chen, W.Y.: Observations on cataloguing and classification (1991) 3.85 
    3.8502135 = sum of:
  3.8502135 = weight(author_txt:chen in 4183) [ClassicSimilarity], result of:
    3.8502135 = fieldWeight in 4183, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      6.1603417 = idf(docFreq=249, maxDocs=43556)
      0.625 = fieldNorm(doc=4183)
  4. Chen, H.: Knowledge-based document retrieval : framework and design (1992) 3.85 
    3.8502135 = sum of:
  3.8502135 = weight(author_txt:chen in 5280) [ClassicSimilarity], result of:
    3.8502135 = fieldWeight in 5280, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      6.1603417 = idf(docFreq=249, maxDocs=43556)
      0.625 = fieldNorm(doc=5280)
  5. Chen, P.S.: On inference rules of logic-based information retrieval systems (1994) 3.85 
    3.8502135 = sum of:
  3.8502135 = weight(author_txt:chen in 6728) [ClassicSimilarity], result of:
    3.8502135 = fieldWeight in 6728, product of:
      1.0 = tf(freq=1.0), with freq of:
        1.0 = termFreq=1.0
      6.1603417 = idf(docFreq=249, maxDocs=43556)
      0.625 = fieldNorm(doc=6728)

Similar documents (content)

  1. Su, L.T.: ¬A comprehensive and systematic model of user evaluation of Web search engines : Il. An evaluation by undergraduates (2003) 0.38 
    0.3784061 = sum of:
  0.3784061 = product of:
    0.78834605 = sum of:
      0.029923437 = weight(abstract_txt:improvement in 3115) [ClassicSimilarity], result of:
        0.029923437 = score(doc=3115,freq=1.0), product of:
          0.088936634 = queryWeight, product of:
            6.152374 = idf(docFreq=251, maxDocs=43556)
            0.014455662 = queryNorm
          0.33645794 = fieldWeight in 3115, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.152374 = idf(docFreq=251, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.019599445 = weight(abstract_txt:time in 3115) [ClassicSimilarity], result of:
        0.019599445 = score(doc=3115,freq=2.0), product of:
          0.060942832 = queryWeight, product of:
            1.0138334 = boost
            4.1583214 = idf(docFreq=1850, maxDocs=43556)
            0.014455662 = queryNorm
          0.32160378 = fieldWeight in 3115, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1583214 = idf(docFreq=1850, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.033904627 = weight(abstract_txt:insight in 3115) [ClassicSimilarity], result of:
        0.033904627 = score(doc=3115,freq=1.0), product of:
          0.09665975 = queryWeight, product of:
            1.0425154 = boost
            6.4139447 = idf(docFreq=193, maxDocs=43556)
            0.014455662 = queryNorm
          0.3507626 = fieldWeight in 3115, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.4139447 = idf(docFreq=193, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.03763335 = weight(abstract_txt:search in 3115) [ClassicSimilarity], result of:
        0.03763335 = score(doc=3115,freq=9.0), product of:
          0.06276499 = queryWeight, product of:
            1.1880463 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014455662 = queryNorm
          0.59959143 = fieldWeight in 3115, product of:
            3.0 = tf(freq=9.0), with freq of:
              9.0 = termFreq=9.0
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.05160039 = weight(abstract_txt:ratings in 3115) [ClassicSimilarity], result of:
        0.05160039 = score(doc=3115,freq=1.0), product of:
          0.12789151 = queryWeight, product of:
            1.1991693 = boost
            7.3777375 = idf(docFreq=73, maxDocs=43556)
            0.014455662 = queryNorm
          0.40347 = fieldWeight in 3115, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.3777375 = idf(docFreq=73, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.032744933 = weight(abstract_txt:relevance in 3115) [ClassicSimilarity], result of:
        0.032744933 = score(doc=3115,freq=2.0), product of:
          0.08580703 = queryWeight, product of:
            1.203003 = boost
            4.934216 = idf(docFreq=851, maxDocs=43556)
            0.014455662 = queryNorm
          0.3816113 = fieldWeight in 3115, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.934216 = idf(docFreq=851, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.053502385 = weight(abstract_txt:measures in 3115) [ClassicSimilarity], result of:
        0.053502385 = score(doc=3115,freq=3.0), product of:
          0.10398687 = queryWeight, product of:
            1.3243248 = boost
            5.4318275 = idf(docFreq=517, maxDocs=43556)
            0.014455662 = queryNorm
          0.514511 = fieldWeight in 3115, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            5.4318275 = idf(docFreq=517, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.046630032 = weight(abstract_txt:evaluation in 3115) [ClassicSimilarity], result of:
        0.046630032 = score(doc=3115,freq=4.0), product of:
          0.09487975 = queryWeight, product of:
            1.4607012 = boost
            4.49339 = idf(docFreq=1323, maxDocs=43556)
            0.014455662 = queryNorm
          0.49146456 = fieldWeight in 3115, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.49339 = idf(docFreq=1323, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.06433768 = weight(abstract_txt:undergraduate in 3115) [ClassicSimilarity], result of:
        0.06433768 = score(doc=3115,freq=1.0), product of:
          0.16959527 = queryWeight, product of:
            1.6912669 = boost
            6.9368706 = idf(docFreq=114, maxDocs=43556)
            0.014455662 = queryNorm
          0.3793601 = fieldWeight in 3115, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.9368706 = idf(docFreq=114, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.081096746 = weight(abstract_txt:four in 3115) [ClassicSimilarity], result of:
        0.081096746 = score(doc=3115,freq=5.0), product of:
          0.12737827 = queryWeight, product of:
            1.6924752 = boost
            5.20637 = idf(docFreq=648, maxDocs=43556)
            0.014455662 = queryNorm
          0.63666075 = fieldWeight in 3115, product of:
            2.236068 = tf(freq=5.0), with freq of:
              5.0 = termFreq=5.0
            5.20637 = idf(docFreq=648, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.16569895 = weight(abstract_txt:satisfaction in 3115) [ClassicSimilarity], result of:
        0.16569895 = score(doc=3115,freq=6.0), product of:
          0.19300969 = queryWeight, product of:
            2.0833595 = boost
            6.408803 = idf(docFreq=194, maxDocs=43556)
            0.014455662 = queryNorm
          0.85850066 = fieldWeight in 3115, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            6.408803 = idf(docFreq=194, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
      0.17167413 = weight(abstract_txt:engines in 3115) [ClassicSimilarity], result of:
        0.17167413 = score(doc=3115,freq=9.0), product of:
          0.19762225 = queryWeight, product of:
            2.5818927 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014455662 = queryNorm
          0.86869836 = fieldWeight in 3115, product of:
            3.0 = tf(freq=9.0), with freq of:
              9.0 = termFreq=9.0
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.0546875 = fieldNorm(doc=3115)
    0.48 = coord(12/25)
  2. Feldman, S.: "Just the answer, please" : choosing a Web search service (1997) 0.32 
    0.31830958 = sum of:
  0.31830958 = product of:
    1.13682 = sum of:
      0.056100484 = weight(abstract_txt:search in 1768) [ClassicSimilarity], result of:
        0.056100484 = score(doc=1768,freq=5.0), product of:
          0.06276499 = queryWeight, product of:
            1.1880463 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014455662 = 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)
      0.030465025 = weight(abstract_txt:than in 1768) [ClassicSimilarity], result of:
        0.030465025 = score(doc=1768,freq=1.0), product of:
          0.07143824 = queryWeight, product of:
            1.2674768 = boost
            3.8989954 = idf(docFreq=2398, maxDocs=43556)
            0.014455662 = queryNorm
          0.42645264 = fieldWeight in 1768, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8989954 = idf(docFreq=2398, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.17317364 = weight(abstract_txt:infoseek in 1768) [ClassicSimilarity], result of:
        0.17317364 = score(doc=1768,freq=2.0), product of:
          0.14333896 = queryWeight, product of:
            1.2695265 = boost
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.014455662 = queryNorm
          1.2081407 = fieldWeight in 1768, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.08209083 = weight(abstract_txt:best in 1768) [ClassicSimilarity], result of:
        0.08209083 = score(doc=1768,freq=1.0), product of:
          0.14901483 = queryWeight, product of:
            2.046654 = boost
            5.0367117 = idf(docFreq=768, maxDocs=43556)
            0.014455662 = queryNorm
          0.5508903 = fieldWeight in 1768, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.0367117 = idf(docFreq=768, maxDocs=43556)
            0.109375 = fieldNorm(doc=1768)
      0.11444942 = weight(abstract_txt:engines in 1768) [ClassicSimilarity], result of:
        0.11444942 = score(doc=1768,freq=1.0), product of:
          0.19762225 = queryWeight, product of:
            2.5818927 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014455662 = 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)
      0.26387587 = weight(abstract_txt:lycos in 1768) [ClassicSimilarity], result of:
        0.26387587 = score(doc=1768,freq=1.0), product of:
          0.32456338 = queryWeight, product of:
            3.020504 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014455662 = 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)
      0.41666472 = weight(abstract_txt:excite in 1768) [ClassicSimilarity], result of:
        0.41666472 = score(doc=1768,freq=2.0), product of:
          0.34931257 = queryWeight, product of:
            3.133551 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014455662 = 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)
    0.28 = coord(7/25)
  3. Notess, G.R.: Measuring the size of Internet databases (1997) 0.29 
    0.28722817 = sum of:
  0.28722817 = product of:
    1.0258149 = sum of:
      0.028673029 = weight(abstract_txt:search in 2459) [ClassicSimilarity], result of:
        0.028673029 = score(doc=2459,freq=1.0), product of:
          0.06276499 = queryWeight, product of:
            1.1880463 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014455662 = 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)
      0.03481717 = weight(abstract_txt:than in 2459) [ClassicSimilarity], result of:
        0.03481717 = score(doc=2459,freq=1.0), product of:
          0.07143824 = queryWeight, product of:
            1.2674768 = boost
            3.8989954 = idf(docFreq=2398, maxDocs=43556)
            0.014455662 = queryNorm
          0.48737442 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.8989954 = idf(docFreq=2398, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.13994545 = weight(abstract_txt:infoseek in 2459) [ClassicSimilarity], result of:
        0.13994545 = score(doc=2459,freq=1.0), product of:
          0.14333896 = queryWeight, product of:
            1.2695265 = boost
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.014455662 = queryNorm
          0.9763252 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.053291462 = weight(abstract_txt:evaluation in 2459) [ClassicSimilarity], result of:
        0.053291462 = score(doc=2459,freq=1.0), product of:
          0.09487975 = queryWeight, product of:
            1.4607012 = boost
            4.49339 = idf(docFreq=1323, maxDocs=43556)
            0.014455662 = queryNorm
          0.56167376 = fieldWeight in 2459, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.49339 = idf(docFreq=1323, maxDocs=43556)
            0.125 = fieldNorm(doc=2459)
      0.13079934 = weight(abstract_txt:engines in 2459) [ClassicSimilarity], result of:
        0.13079934 = score(doc=2459,freq=1.0), product of:
          0.19762225 = queryWeight, product of:
            2.5818927 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014455662 = 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)
      0.30157244 = weight(abstract_txt:lycos in 2459) [ClassicSimilarity], result of:
        0.30157244 = score(doc=2459,freq=1.0), product of:
          0.32456338 = queryWeight, product of:
            3.020504 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014455662 = 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)
      0.33671597 = weight(abstract_txt:excite in 2459) [ClassicSimilarity], result of:
        0.33671597 = score(doc=2459,freq=1.0), product of:
          0.34931257 = queryWeight, product of:
            3.133551 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014455662 = 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)
    0.28 = coord(7/25)
  4. Fryxell, D.A.: ¬9 Web search sites examined (1996) 0.28 
    0.28131184 = sum of:
  0.28131184 = product of:
    1.4065592 = sum of:
      0.043009542 = weight(abstract_txt:search in 5207) [ClassicSimilarity], result of:
        0.043009542 = score(doc=5207,freq=1.0), product of:
          0.06276499 = queryWeight, product of:
            1.1880463 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014455662 = 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)
      0.20991816 = weight(abstract_txt:infoseek in 5207) [ClassicSimilarity], result of:
        0.20991816 = score(doc=5207,freq=1.0), product of:
          0.14333896 = queryWeight, product of:
            1.2695265 = boost
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.014455662 = queryNorm
          1.4644878 = fieldWeight in 5207, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.1875 = fieldNorm(doc=5207)
      0.196199 = weight(abstract_txt:engines in 5207) [ClassicSimilarity], result of:
        0.196199 = score(doc=5207,freq=1.0), product of:
          0.19762225 = queryWeight, product of:
            2.5818927 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014455662 = 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)
      0.45235866 = weight(abstract_txt:lycos in 5207) [ClassicSimilarity], result of:
        0.45235866 = score(doc=5207,freq=1.0), product of:
          0.32456338 = queryWeight, product of:
            3.020504 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014455662 = 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)
      0.50507396 = weight(abstract_txt:excite in 5207) [ClassicSimilarity], result of:
        0.50507396 = score(doc=5207,freq=1.0), product of:
          0.34931257 = queryWeight, product of:
            3.133551 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014455662 = 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)
    0.2 = coord(5/25)
  5. Courlois, M.P.: Cool tools for Web searching : an update (1996) 0.28 
    0.28131184 = sum of:
  0.28131184 = product of:
    1.4065592 = sum of:
      0.043009542 = weight(abstract_txt:search in 5209) [ClassicSimilarity], result of:
        0.043009542 = score(doc=5209,freq=1.0), product of:
          0.06276499 = queryWeight, product of:
            1.1880463 = boost
            3.6546526 = idf(docFreq=3062, maxDocs=43556)
            0.014455662 = 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)
      0.20991816 = weight(abstract_txt:infoseek in 5209) [ClassicSimilarity], result of:
        0.20991816 = score(doc=5209,freq=1.0), product of:
          0.14333896 = queryWeight, product of:
            1.2695265 = boost
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.014455662 = queryNorm
          1.4644878 = fieldWeight in 5209, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.8106017 = idf(docFreq=47, maxDocs=43556)
            0.1875 = fieldNorm(doc=5209)
      0.196199 = weight(abstract_txt:engines in 5209) [ClassicSimilarity], result of:
        0.196199 = score(doc=5209,freq=1.0), product of:
          0.19762225 = queryWeight, product of:
            2.5818927 = boost
            5.2949233 = idf(docFreq=593, maxDocs=43556)
            0.014455662 = 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)
      0.45235866 = weight(abstract_txt:lycos in 5209) [ClassicSimilarity], result of:
        0.45235866 = score(doc=5209,freq=1.0), product of:
          0.32456338 = queryWeight, product of:
            3.020504 = boost
            7.4333076 = idf(docFreq=69, maxDocs=43556)
            0.014455662 = 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)
      0.50507396 = weight(abstract_txt:excite in 5209) [ClassicSimilarity], result of:
        0.50507396 = score(doc=5209,freq=1.0), product of:
          0.34931257 = queryWeight, product of:
            3.133551 = boost
            7.7115107 = idf(docFreq=52, maxDocs=43556)
            0.014455662 = 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)
    0.2 = coord(5/25)