Document (#32271)

Author
Jansen, B.J.
Spink, A.
Koshman, S.
Title
Web searcher interaction with the Dogpile.com metasearch engine
Source
Journal of the American Society for Information Science and Technology. 58(2007) no.5, S.744-755
Year
2007
Abstract
Metasearch engines are an intuitive method for improving the performance of Web search by increasing coverage, returning large numbers of results with a focus on relevance, and presenting alternative views of information needs. However, the use of metasearch engines in an operational environment is not well understood. In this study, we investigate the usage of Dogpile.com, a major Web metasearch engine, with the aim of discovering how Web searchers interact with metasearch engines. We report results examining 2,465,145 interactions from 534,507 users of Dogpile.com on May 6, 2005 and compare these results with findings from other Web searching studies. We collect data on geographical location of searchers, use of system feedback, content selection, sessions, queries, and term usage. Findings show that Dogpile.com searchers are mainly from the USA (84% of searchers), use about 3 terms per query (mean = 2.85), implement system feedback moderately (8.4% of users), and generally (56% of users) spend less than one minute interacting with the Web search engine. Overall, metasearchers seem to have higher degrees of interaction than searchers on non-metasearch engines, but their sessions are for a shorter period of time. These aspects of metasearching may be what define the differences from other forms of Web searching. We discuss the implications of our findings in relation to metasearch for Web searchers, search engines, and content providers.
Theme
Suchmaschinen
Object
Dogpile

Similar documents (author)

  1. Koshman, S.; Spink, A.; Jansen, B.J.: Web searching on the Vivisimo search engine (2006) 5.29
    5.2867017 = sum of:
      5.2867017 = sum of:
        1.2450736 = weight(author_txt:spink in 216) [ClassicSimilarity], result of:
          1.2450736 = score(doc=216,freq=1.0), product of:
            0.4523318 = queryWeight, product of:
              7.3401785 = idf(docFreq=77, maxDocs=44218)
              0.061624087 = queryNorm
            2.7525668 = fieldWeight in 216, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.3401785 = idf(docFreq=77, maxDocs=44218)
              0.375 = fieldNorm(doc=216)
        1.4314582 = weight(author_txt:jansen in 216) [ClassicSimilarity], result of:
          1.4314582 = score(doc=216,freq=1.0), product of:
            0.49641654 = queryWeight, product of:
              1.0475978 = boost
              7.689554 = idf(docFreq=54, maxDocs=44218)
              0.061624087 = queryNorm
            2.8835828 = fieldWeight in 216, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.689554 = idf(docFreq=54, maxDocs=44218)
              0.375 = fieldNorm(doc=216)
        2.61017 = weight(author_txt:koshman in 216) [ClassicSimilarity], result of:
          2.61017 = score(doc=216,freq=1.0), product of:
            0.7409228 = queryWeight, product of:
              1.2798465 = boost
              9.394302 = idf(docFreq=9, maxDocs=44218)
              0.061624087 = queryNorm
            3.5228634 = fieldWeight in 216, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.394302 = idf(docFreq=9, maxDocs=44218)
              0.375 = fieldNorm(doc=216)
    
  2. Jansen, B.J.; Spink, A.; Blakely, C.; Koshman, S.: Defining a session on Web search engines (2007) 4.41
    4.4055843 = sum of:
      4.4055843 = sum of:
        1.0375613 = weight(author_txt:spink in 285) [ClassicSimilarity], result of:
          1.0375613 = score(doc=285,freq=1.0), product of:
            0.4523318 = queryWeight, product of:
              7.3401785 = idf(docFreq=77, maxDocs=44218)
              0.061624087 = queryNorm
            2.2938058 = fieldWeight in 285, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.3401785 = idf(docFreq=77, maxDocs=44218)
              0.3125 = fieldNorm(doc=285)
        1.1928818 = weight(author_txt:jansen in 285) [ClassicSimilarity], result of:
          1.1928818 = score(doc=285,freq=1.0), product of:
            0.49641654 = queryWeight, product of:
              1.0475978 = boost
              7.689554 = idf(docFreq=54, maxDocs=44218)
              0.061624087 = queryNorm
            2.4029856 = fieldWeight in 285, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.689554 = idf(docFreq=54, maxDocs=44218)
              0.3125 = fieldNorm(doc=285)
        2.1751416 = weight(author_txt:koshman in 285) [ClassicSimilarity], result of:
          2.1751416 = score(doc=285,freq=1.0), product of:
            0.7409228 = queryWeight, product of:
              1.2798465 = boost
              9.394302 = idf(docFreq=9, maxDocs=44218)
              0.061624087 = queryNorm
            2.9357195 = fieldWeight in 285, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.394302 = idf(docFreq=9, maxDocs=44218)
              0.3125 = fieldNorm(doc=285)
    
  3. Spink, A.; Jansen, B.J.; Blakely, C.; Koshman, S.: ¬A study of results overlap and uniqueness among major Web search engines (2006) 4.41
    4.4055843 = sum of:
      4.4055843 = sum of:
        1.0375613 = weight(author_txt:spink in 993) [ClassicSimilarity], result of:
          1.0375613 = score(doc=993,freq=1.0), product of:
            0.4523318 = queryWeight, product of:
              7.3401785 = idf(docFreq=77, maxDocs=44218)
              0.061624087 = queryNorm
            2.2938058 = fieldWeight in 993, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.3401785 = idf(docFreq=77, maxDocs=44218)
              0.3125 = fieldNorm(doc=993)
        1.1928818 = weight(author_txt:jansen in 993) [ClassicSimilarity], result of:
          1.1928818 = score(doc=993,freq=1.0), product of:
            0.49641654 = queryWeight, product of:
              1.0475978 = boost
              7.689554 = idf(docFreq=54, maxDocs=44218)
              0.061624087 = queryNorm
            2.4029856 = fieldWeight in 993, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.689554 = idf(docFreq=54, maxDocs=44218)
              0.3125 = fieldNorm(doc=993)
        2.1751416 = weight(author_txt:koshman in 993) [ClassicSimilarity], result of:
          2.1751416 = score(doc=993,freq=1.0), product of:
            0.7409228 = queryWeight, product of:
              1.2798465 = boost
              9.394302 = idf(docFreq=9, maxDocs=44218)
              0.061624087 = queryNorm
            2.9357195 = fieldWeight in 993, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              9.394302 = idf(docFreq=9, maxDocs=44218)
              0.3125 = fieldNorm(doc=993)
    
  4. Spink, A.; Park, M.; Koshman, S.: Factors affecting assigned information problem ordering during Web search : an exploratory study (2006) 2.57
    2.5701623 = sum of:
      2.5701623 = product of:
        3.8552434 = sum of:
          1.2450736 = weight(author_txt:spink in 991) [ClassicSimilarity], result of:
            1.2450736 = score(doc=991,freq=1.0), product of:
              0.4523318 = queryWeight, product of:
                7.3401785 = idf(docFreq=77, maxDocs=44218)
                0.061624087 = queryNorm
              2.7525668 = fieldWeight in 991, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3401785 = idf(docFreq=77, maxDocs=44218)
                0.375 = fieldNorm(doc=991)
          2.61017 = weight(author_txt:koshman in 991) [ClassicSimilarity], result of:
            2.61017 = score(doc=991,freq=1.0), product of:
              0.7409228 = queryWeight, product of:
                1.2798465 = boost
                9.394302 = idf(docFreq=9, maxDocs=44218)
                0.061624087 = queryNorm
              3.5228634 = fieldWeight in 991, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.394302 = idf(docFreq=9, maxDocs=44218)
                0.375 = fieldNorm(doc=991)
        0.6666667 = coord(2/3)
    
  5. Jansen, B.J.; Spink, A.: How are we searching the World Wide Web? : A comparison of nine search engine transaction logs (2006) 2.38
    2.3791394 = sum of:
      2.3791394 = product of:
        3.568709 = sum of:
          1.6600981 = weight(author_txt:spink in 968) [ClassicSimilarity], result of:
            1.6600981 = score(doc=968,freq=1.0), product of:
              0.4523318 = queryWeight, product of:
                7.3401785 = idf(docFreq=77, maxDocs=44218)
                0.061624087 = queryNorm
              3.6700892 = fieldWeight in 968, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3401785 = idf(docFreq=77, maxDocs=44218)
                0.5 = fieldNorm(doc=968)
          1.9086109 = weight(author_txt:jansen in 968) [ClassicSimilarity], result of:
            1.9086109 = score(doc=968,freq=1.0), product of:
              0.49641654 = queryWeight, product of:
                1.0475978 = boost
                7.689554 = idf(docFreq=54, maxDocs=44218)
                0.061624087 = queryNorm
              3.844777 = fieldWeight in 968, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.689554 = idf(docFreq=54, maxDocs=44218)
                0.5 = fieldNorm(doc=968)
        0.6666667 = coord(2/3)
    

Similar documents (content)

  1. Howe, A.E.; Dreilinger, D.: SavvySearch: a metasearch engine that learns with search engines to query (1997) 0.38
    0.38070598 = sum of:
      0.38070598 = product of:
        1.586275 = sum of:
          0.021456065 = weight(abstract_txt:results in 1190) [ClassicSimilarity], result of:
            0.021456065 = score(doc=1190,freq=1.0), product of:
              0.056331404 = queryWeight, product of:
                1.4493483 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.011160827 = queryNorm
              0.38088992 = fieldWeight in 1190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.109375 = fieldNorm(doc=1190)
          0.023111567 = weight(abstract_txt:users in 1190) [ClassicSimilarity], result of:
            0.023111567 = score(doc=1190,freq=1.0), product of:
              0.05919297 = queryWeight, product of:
                1.4857049 = boost
                3.569778 = idf(docFreq=3384, maxDocs=44218)
                0.011160827 = queryNorm
              0.39044446 = fieldWeight in 1190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.569778 = idf(docFreq=3384, maxDocs=44218)
                0.109375 = fieldNorm(doc=1190)
          0.060915984 = weight(abstract_txt:search in 1190) [ClassicSimilarity], result of:
            0.060915984 = score(doc=1190,freq=6.0), product of:
              0.06215665 = queryWeight, product of:
                1.5224439 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.011160827 = queryNorm
              0.98003966 = fieldWeight in 1190, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.109375 = fieldNorm(doc=1190)
          0.08579054 = weight(abstract_txt:engine in 1190) [ClassicSimilarity], result of:
            0.08579054 = score(doc=1190,freq=1.0), product of:
              0.14190906 = queryWeight, product of:
                2.3003957 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.011160827 = queryNorm
              0.6045459 = fieldWeight in 1190, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.109375 = fieldNorm(doc=1190)
          0.30907038 = weight(abstract_txt:engines in 1190) [ClassicSimilarity], result of:
            0.30907038 = score(doc=1190,freq=6.0), product of:
              0.21759786 = queryWeight, product of:
                3.6774702 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.011160827 = queryNorm
              1.4203742 = fieldWeight in 1190, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.109375 = fieldNorm(doc=1190)
          1.0859305 = weight(abstract_txt:metasearch in 1190) [ClassicSimilarity], result of:
            1.0859305 = score(doc=1190,freq=2.0), product of:
              0.8113984 = queryWeight, product of:
                8.402392 = boost
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.011160827 = queryNorm
              1.3383443 = fieldWeight in 1190, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.109375 = fieldNorm(doc=1190)
        0.24 = coord(6/25)
    
  2. Spink, A.; Jansen, B.J.; Blakely, C.; Koshman, S.: ¬A study of results overlap and uniqueness among major Web search engines (2006) 0.35
    0.3497838 = sum of:
      0.3497838 = product of:
        0.97162163 = sum of:
          0.010007739 = weight(abstract_txt:than in 993) [ClassicSimilarity], result of:
            0.010007739 = score(doc=993,freq=1.0), product of:
              0.04698192 = queryWeight, product of:
                1.0807301 = boost
                3.8950868 = idf(docFreq=2444, maxDocs=44218)
                0.011160827 = queryNorm
              0.21301256 = fieldWeight in 993, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.8950868 = idf(docFreq=2444, maxDocs=44218)
                0.0546875 = fieldNorm(doc=993)
          0.032184098 = weight(abstract_txt:results in 993) [ClassicSimilarity], result of:
            0.032184098 = score(doc=993,freq=9.0), product of:
              0.056331404 = queryWeight, product of:
                1.4493483 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.011160827 = queryNorm
              0.5713349 = fieldWeight in 993, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.0546875 = fieldNorm(doc=993)
          0.051268436 = weight(abstract_txt:search in 993) [ClassicSimilarity], result of:
            0.051268436 = score(doc=993,freq=17.0), product of:
              0.06215665 = queryWeight, product of:
                1.5224439 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.011160827 = 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)
          0.012386083 = weight(abstract_txt:from in 993) [ClassicSimilarity], result of:
            0.012386083 = score(doc=993,freq=3.0), product of:
              0.047311388 = queryWeight, product of:
                1.5337328 = boost
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.011160827 = queryNorm
              0.2617992 = fieldWeight in 993, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.0546875 = fieldNorm(doc=993)
          0.018154858 = weight(abstract_txt:findings in 993) [ClassicSimilarity], result of:
            0.018154858 = score(doc=993,freq=1.0), product of:
              0.079995535 = queryWeight, product of:
                1.7271512 = boost
                4.1499133 = idf(docFreq=1894, maxDocs=44218)
                0.011160827 = queryNorm
              0.22694838 = fieldWeight in 993, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1499133 = idf(docFreq=1894, maxDocs=44218)
                0.0546875 = fieldNorm(doc=993)
          0.007935731 = weight(abstract_txt:with in 993) [ClassicSimilarity], result of:
            0.007935731 = score(doc=993,freq=1.0), product of:
              0.05805039 = queryWeight, product of:
                2.0807269 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.011160827 = queryNorm
              0.13670418 = fieldWeight in 993, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.0546875 = fieldNorm(doc=993)
          0.060663067 = weight(abstract_txt:engine in 993) [ClassicSimilarity], result of:
            0.060663067 = score(doc=993,freq=2.0), product of:
              0.14190906 = queryWeight, product of:
                2.3003957 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.011160827 = queryNorm
              0.42747846 = fieldWeight in 993, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.0546875 = fieldNorm(doc=993)
          0.2360564 = weight(abstract_txt:engines in 993) [ClassicSimilarity], result of:
            0.2360564 = score(doc=993,freq=14.0), product of:
              0.21759786 = queryWeight, product of:
                3.6774702 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.011160827 = 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)
          0.54296523 = weight(abstract_txt:metasearch in 993) [ClassicSimilarity], result of:
            0.54296523 = score(doc=993,freq=2.0), product of:
              0.8113984 = queryWeight, product of:
                8.402392 = boost
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.011160827 = queryNorm
              0.66917217 = fieldWeight in 993, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.0546875 = fieldNorm(doc=993)
        0.36 = coord(9/25)
    
  3. Luo, M.M.; Nahl, D.: Let's Google : uncertainty and bilingual search (2019) 0.33
    0.33199894 = sum of:
      0.33199894 = product of:
        0.75454307 = sum of:
          0.014296769 = weight(abstract_txt:than in 5363) [ClassicSimilarity], result of:
            0.014296769 = score(doc=5363,freq=1.0), product of:
              0.04698192 = queryWeight, product of:
                1.0807301 = boost
                3.8950868 = idf(docFreq=2444, maxDocs=44218)
                0.011160827 = queryNorm
              0.30430365 = fieldWeight in 5363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.8950868 = idf(docFreq=2444, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.019030754 = weight(abstract_txt:searching in 5363) [ClassicSimilarity], result of:
            0.019030754 = score(doc=5363,freq=1.0), product of:
              0.056851614 = queryWeight, product of:
                1.1888396 = boost
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.011160827 = queryNorm
              0.3347443 = fieldWeight in 5363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.026544996 = weight(abstract_txt:results in 5363) [ClassicSimilarity], result of:
            0.026544996 = score(doc=5363,freq=3.0), product of:
              0.056331404 = queryWeight, product of:
                1.4493483 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.011160827 = queryNorm
              0.47122908 = fieldWeight in 5363, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.016508263 = weight(abstract_txt:users in 5363) [ClassicSimilarity], result of:
            0.016508263 = score(doc=5363,freq=1.0), product of:
              0.05919297 = queryWeight, product of:
                1.4857049 = boost
                3.569778 = idf(docFreq=3384, maxDocs=44218)
                0.011160827 = queryNorm
              0.2788889 = fieldWeight in 5363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.569778 = idf(docFreq=3384, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.0469977 = weight(abstract_txt:search in 5363) [ClassicSimilarity], result of:
            0.0469977 = score(doc=5363,freq=7.0), product of:
              0.06215665 = queryWeight, product of:
                1.5224439 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.011160827 = queryNorm
              0.756117 = fieldWeight in 5363, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.010215869 = weight(abstract_txt:from in 5363) [ClassicSimilarity], result of:
            0.010215869 = score(doc=5363,freq=1.0), product of:
              0.047311388 = queryWeight, product of:
                1.5337328 = boost
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.011160827 = queryNorm
              0.21592833 = fieldWeight in 5363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.7638826 = idf(docFreq=7577, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.03667835 = weight(abstract_txt:findings in 5363) [ClassicSimilarity], result of:
            0.03667835 = score(doc=5363,freq=2.0), product of:
              0.079995535 = queryWeight, product of:
                1.7271512 = boost
                4.1499133 = idf(docFreq=1894, maxDocs=44218)
                0.011160827 = queryNorm
              0.45850497 = fieldWeight in 5363, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1499133 = idf(docFreq=1894, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.016032597 = weight(abstract_txt:with in 5363) [ClassicSimilarity], result of:
            0.016032597 = score(doc=5363,freq=2.0), product of:
              0.05805039 = queryWeight, product of:
                2.0807269 = boost
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.011160827 = queryNorm
              0.27618414 = fieldWeight in 5363, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.4997334 = idf(docFreq=9868, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.061278958 = weight(abstract_txt:engine in 5363) [ClassicSimilarity], result of:
            0.061278958 = score(doc=5363,freq=1.0), product of:
              0.14190906 = queryWeight, product of:
                2.3003957 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.011160827 = queryNorm
              0.4318185 = fieldWeight in 5363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.09012675 = weight(abstract_txt:engines in 5363) [ClassicSimilarity], result of:
            0.09012675 = score(doc=5363,freq=1.0), product of:
              0.21759786 = queryWeight, product of:
                3.6774702 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.011160827 = queryNorm
              0.41418952 = fieldWeight in 5363, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
          0.4168321 = weight(abstract_txt:searchers in 5363) [ClassicSimilarity], result of:
            0.4168321 = score(doc=5363,freq=7.0), product of:
              0.33554748 = queryWeight, product of:
                5.002527 = boost
                6.009912 = idf(docFreq=294, maxDocs=44218)
                0.011160827 = queryNorm
              1.2422447 = fieldWeight in 5363, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                6.009912 = idf(docFreq=294, maxDocs=44218)
                0.078125 = fieldNorm(doc=5363)
        0.44 = coord(11/25)
    
  4. Andricik, M.: Metasearch engine for Austrian research information (2002) 0.30
    0.29774624 = sum of:
      0.29774624 = product of:
        1.2406094 = sum of:
          0.018390913 = weight(abstract_txt:results in 3600) [ClassicSimilarity], result of:
            0.018390913 = score(doc=3600,freq=1.0), product of:
              0.056331404 = queryWeight, product of:
                1.4493483 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.011160827 = queryNorm
              0.32647708 = fieldWeight in 3600, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.09375 = fieldNorm(doc=3600)
          0.028015452 = weight(abstract_txt:users in 3600) [ClassicSimilarity], result of:
            0.028015452 = score(doc=3600,freq=2.0), product of:
              0.05919297 = queryWeight, product of:
                1.4857049 = boost
                3.569778 = idf(docFreq=3384, maxDocs=44218)
                0.011160827 = queryNorm
              0.47329018 = fieldWeight in 3600, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.569778 = idf(docFreq=3384, maxDocs=44218)
                0.09375 = fieldNorm(doc=3600)
          0.036920656 = weight(abstract_txt:search in 3600) [ClassicSimilarity], result of:
            0.036920656 = score(doc=3600,freq=3.0), product of:
              0.06215665 = queryWeight, product of:
                1.5224439 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.011160827 = queryNorm
              0.59399366 = fieldWeight in 3600, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.09375 = fieldNorm(doc=3600)
          0.07353474 = weight(abstract_txt:engine in 3600) [ClassicSimilarity], result of:
            0.07353474 = score(doc=3600,freq=1.0), product of:
              0.14190906 = queryWeight, product of:
                2.3003957 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.011160827 = queryNorm
              0.51818216 = fieldWeight in 3600, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.09375 = fieldNorm(doc=3600)
          0.15295017 = weight(abstract_txt:engines in 3600) [ClassicSimilarity], result of:
            0.15295017 = score(doc=3600,freq=2.0), product of:
              0.21759786 = queryWeight, product of:
                3.6774702 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.011160827 = queryNorm
              0.7029029 = fieldWeight in 3600, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.09375 = fieldNorm(doc=3600)
          0.9307975 = weight(abstract_txt:metasearch in 3600) [ClassicSimilarity], result of:
            0.9307975 = score(doc=3600,freq=2.0), product of:
              0.8113984 = queryWeight, product of:
                8.402392 = boost
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.011160827 = queryNorm
              1.1471523 = fieldWeight in 3600, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.09375 = fieldNorm(doc=3600)
        0.24 = coord(6/25)
    
  5. Feldman, S.: Web search services in 1998 : trends and challenges (1998) 0.30
    0.29682508 = sum of:
      0.29682508 = product of:
        1.0600896 = sum of:
          0.017156124 = weight(abstract_txt:than in 5215) [ClassicSimilarity], result of:
            0.017156124 = score(doc=5215,freq=1.0), product of:
              0.04698192 = queryWeight, product of:
                1.0807301 = boost
                3.8950868 = idf(docFreq=2444, maxDocs=44218)
                0.011160827 = queryNorm
              0.3651644 = fieldWeight in 5215, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.8950868 = idf(docFreq=2444, maxDocs=44218)
                0.09375 = fieldNorm(doc=5215)
          0.022836905 = weight(abstract_txt:searching in 5215) [ClassicSimilarity], result of:
            0.022836905 = score(doc=5215,freq=1.0), product of:
              0.056851614 = queryWeight, product of:
                1.1888396 = boost
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.011160827 = queryNorm
              0.40169317 = fieldWeight in 5215, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.284727 = idf(docFreq=1655, maxDocs=44218)
                0.09375 = fieldNorm(doc=5215)
          0.018390913 = weight(abstract_txt:results in 5215) [ClassicSimilarity], result of:
            0.018390913 = score(doc=5215,freq=1.0), product of:
              0.056331404 = queryWeight, product of:
                1.4493483 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.011160827 = queryNorm
              0.32647708 = fieldWeight in 5215, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.09375 = fieldNorm(doc=5215)
          0.052213702 = weight(abstract_txt:search in 5215) [ClassicSimilarity], result of:
            0.052213702 = score(doc=5215,freq=6.0), product of:
              0.06215665 = queryWeight, product of:
                1.5224439 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.011160827 = queryNorm
              0.840034 = fieldWeight in 5215, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.09375 = fieldNorm(doc=5215)
          0.10399383 = weight(abstract_txt:engine in 5215) [ClassicSimilarity], result of:
            0.10399383 = score(doc=5215,freq=2.0), product of:
              0.14190906 = queryWeight, product of:
                2.3003957 = boost
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.011160827 = queryNorm
              0.7328202 = fieldWeight in 5215, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5272765 = idf(docFreq=477, maxDocs=44218)
                0.09375 = fieldNorm(doc=5215)
          0.18732493 = weight(abstract_txt:engines in 5215) [ClassicSimilarity], result of:
            0.18732493 = score(doc=5215,freq=3.0), product of:
              0.21759786 = queryWeight, product of:
                3.6774702 = boost
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.011160827 = queryNorm
              0.8608767 = fieldWeight in 5215, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.3016257 = idf(docFreq=598, maxDocs=44218)
                0.09375 = fieldNorm(doc=5215)
          0.65817326 = weight(abstract_txt:metasearch in 5215) [ClassicSimilarity], result of:
            0.65817326 = score(doc=5215,freq=1.0), product of:
              0.8113984 = queryWeight, product of:
                8.402392 = boost
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.011160827 = queryNorm
              0.8111592 = fieldWeight in 5215, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.652365 = idf(docFreq=20, maxDocs=44218)
                0.09375 = fieldNorm(doc=5215)
        0.28 = coord(7/25)