Document (#29816)

Author
Jansen, B.J.
McNeese, M.D.
Title
Evaluating the Effectiveness of and Patterns of Interactions With Automated Searching Assistance
Source
Journal of the American Society for Information Science and Technology. 56(2005) no.14, S.1480-1503
Year
2005
Abstract
We report quantitative and qualitative results of an empirical evaluation to determine whether automated assistance improves searching performance and when searchers desire system intervention in the search process. Forty participants interacted with two fully functional information retrieval systems in a counterbalanced, within-participant study. The systems were identical in all respects except that one offered automated assistance and the other did not. The study used a client-side automated assistance application, an approximately 500,000-document Text REtrieval Conference content collection, and six topics. Results indicate that automated assistance can improve searching performance. However, the improvement is less dramatic than one might expect, with an approximately 20% performance increase, as measured by the number of userselected relevant documents. Concerning patterns of interaction, we identified 1,879 occurrences of searchersystem interactions and classified them into 9 major categories and 27 subcategories or states. Results indicate that there are predictable patterns of times when searchers desire and implement searching assistance. The most common three-state pattern is Execute Query-View Results: With Scrolling-View Assistance. Searchers appear receptive to automated assistance; there is a 71% implementation rate. There does not seem to be a correlation between the use of assistance and previous searching performance. We discuss the implications for the design of information retrieval systems and future research directions.
Theme
Retrievalstudien

Similar documents (author)

  1. Jansen, R.: Thesaurusrelationen als instrumentelle Hilfsmittel für Hypertext und Wissensbanken? (1993) 4.81 
    4.8059707 = sum of:
  4.8059707 = weight(author_txt:jansen in 2926) [ClassicSimilarity], result of:
    4.8059707 = score(doc=2926,freq=1.0), product of:
      0.99999994 = queryWeight, product of:
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.13004655 = queryNorm
      4.805971 = fieldWeight in 2926, product of:
        1.0 = tf(freq=1.0), with freq of:
          1.0 = termFreq=1.0
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.625 = fieldNorm(doc=2926)
  2. Jansen, M.: Per Maus-Klick ein Agentur-Foto bestellen : die Deutsche Bank plant einen elektronischen Marktplatz für Bildrechte und beunruhigt damit die Branche (1996) 4.81 
    4.8059707 = sum of:
  4.8059707 = weight(author_txt:jansen in 5877) [ClassicSimilarity], result of:
    4.8059707 = score(doc=5877,freq=1.0), product of:
      0.99999994 = queryWeight, product of:
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.13004655 = queryNorm
      4.805971 = fieldWeight in 5877, product of:
        1.0 = tf(freq=1.0), with freq of:
          1.0 = termFreq=1.0
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.625 = fieldNorm(doc=5877)
  3. Jansen, R.: Intentionen der Indexierungsnorm DIN 31623 und Überlegungen zum Verhältnis gleichordnende/syntaktische Indexierung (1978) 4.81 
    4.8059707 = sum of:
  4.8059707 = weight(author_txt:jansen in 1758) [ClassicSimilarity], result of:
    4.8059707 = score(doc=1758,freq=1.0), product of:
      0.99999994 = queryWeight, product of:
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.13004655 = queryNorm
      4.805971 = fieldWeight in 1758, product of:
        1.0 = tf(freq=1.0), with freq of:
          1.0 = termFreq=1.0
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.625 = fieldNorm(doc=1758)
  4. Jansen, H.: ¬Die "Digitale Öffentliche Bibliothek NRW" : Neues Projekt im Rahmen der Digitalen Bibliothek NRW (2001) 4.81 
    4.8059707 = sum of:
  4.8059707 = weight(author_txt:jansen in 5667) [ClassicSimilarity], result of:
    4.8059707 = score(doc=5667,freq=1.0), product of:
      0.99999994 = queryWeight, product of:
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.13004655 = queryNorm
      4.805971 = fieldWeight in 5667, product of:
        1.0 = tf(freq=1.0), with freq of:
          1.0 = termFreq=1.0
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.625 = fieldNorm(doc=5667)
  5. Jansen, H.: ¬Die "Digitale Öffentliche Bibliothek" : Ein neues Projekt im Rahmen der Digitalen Bibliothek NRW (2001) 4.81 
    4.8059707 = sum of:
  4.8059707 = weight(author_txt:jansen in 5707) [ClassicSimilarity], result of:
    4.8059707 = score(doc=5707,freq=1.0), product of:
      0.99999994 = queryWeight, product of:
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.13004655 = queryNorm
      4.805971 = fieldWeight in 5707, product of:
        1.0 = tf(freq=1.0), with freq of:
          1.0 = termFreq=1.0
        7.689554 = idf(docFreq=54, maxDocs=44218)
        0.625 = fieldNorm(doc=5707)

Similar documents (content)

  1. Jansen, B.J.: Seeking and implementing automated assistance during the search process (2005) 0.62 
    0.6237034 = sum of:
  0.6237034 = product of:
    1.4175078 = sum of:
      0.027060473 = weight(abstract_txt:when in 1055) [ClassicSimilarity], result of:
        0.027060473 = score(doc=1055,freq=3.0), product of:
          0.060258918 = queryWeight, product of:
            1.0190532 = boost
            4.148331 = idf(docFreq=1897, maxDocs=44218)
            0.0142544685 = queryNorm
          0.44907 = fieldWeight in 1055, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            4.148331 = idf(docFreq=1897, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.009668979 = weight(abstract_txt:with in 1055) [ClassicSimilarity], result of:
        0.009668979 = score(doc=1055,freq=2.0), product of:
          0.04376147 = queryWeight, product of:
            1.228138 = boost
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.0142544685 = queryNorm
          0.22094731 = fieldWeight in 1055, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.01843917 = weight(abstract_txt:systems in 1055) [ClassicSimilarity], result of:
        0.01843917 = score(doc=1055,freq=2.0), product of:
          0.061143853 = queryWeight, product of:
            1.2572112 = boost
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.0142544685 = queryNorm
          0.3015703 = fieldWeight in 1055, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.019483969 = weight(abstract_txt:retrieval in 1055) [ClassicSimilarity], result of:
        0.019483969 = score(doc=1055,freq=2.0), product of:
          0.06343226 = queryWeight, product of:
            1.2805216 = boost
            3.4751394 = idf(docFreq=3720, maxDocs=44218)
            0.0142544685 = queryNorm
          0.3071618 = fieldWeight in 1055, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.4751394 = idf(docFreq=3720, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.033669285 = weight(abstract_txt:indicate in 1055) [ClassicSimilarity], result of:
        0.033669285 = score(doc=1055,freq=1.0), product of:
          0.10053735 = queryWeight, product of:
            1.316285 = boost
            5.358293 = idf(docFreq=565, maxDocs=44218)
            0.0142544685 = queryNorm
          0.33489332 = fieldWeight in 1055, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.358293 = idf(docFreq=565, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.0738093 = weight(abstract_txt:approximately in 1055) [ClassicSimilarity], result of:
        0.0738093 = score(doc=1055,freq=1.0), product of:
          0.16965978 = queryWeight, product of:
            1.7099195 = boost
            6.9606886 = idf(docFreq=113, maxDocs=44218)
            0.0142544685 = queryNorm
          0.43504304 = fieldWeight in 1055, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.9606886 = idf(docFreq=113, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.032017644 = weight(abstract_txt:results in 1055) [ClassicSimilarity], result of:
        0.032017644 = score(doc=1055,freq=3.0), product of:
          0.08493121 = queryWeight, product of:
            1.7109404 = boost
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.0142544685 = queryNorm
          0.37698326 = fieldWeight in 1055, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.071260706 = weight(abstract_txt:searchers in 1055) [ClassicSimilarity], result of:
        0.071260706 = score(doc=1055,freq=1.0), product of:
          0.18971513 = queryWeight, product of:
            2.2145364 = boost
            6.009912 = idf(docFreq=294, maxDocs=44218)
            0.0142544685 = queryNorm
          0.3756195 = fieldWeight in 1055, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.009912 = idf(docFreq=294, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.06086659 = weight(abstract_txt:searching in 1055) [ClassicSimilarity], result of:
        0.06086659 = score(doc=1055,freq=2.0), product of:
          0.16071662 = queryWeight, product of:
            2.6313984 = boost
            4.284727 = idf(docFreq=1655, maxDocs=44218)
            0.0142544685 = queryNorm
          0.37871996 = fieldWeight in 1055, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.284727 = idf(docFreq=1655, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.23101565 = weight(abstract_txt:automated in 1055) [ClassicSimilarity], result of:
        0.23101565 = score(doc=1055,freq=4.0), product of:
          0.32982698 = queryWeight, product of:
            4.1294284 = boost
            5.6033173 = idf(docFreq=442, maxDocs=44218)
            0.0142544685 = queryNorm
          0.70041466 = fieldWeight in 1055, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            5.6033173 = idf(docFreq=442, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
      0.84021604 = weight(abstract_txt:assistance in 1055) [ClassicSimilarity], result of:
        0.84021604 = score(doc=1055,freq=8.0), product of:
          0.7087172 = queryWeight, product of:
            7.413597 = boost
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.0142544685 = queryNorm
          1.1855448 = fieldWeight in 1055, product of:
            2.828427 = tf(freq=8.0), with freq of:
              8.0 = termFreq=8.0
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.0625 = fieldNorm(doc=1055)
    0.44 = coord(11/25)
  2. Gauch, S.; Smith, J.B.: ¬An expert system for automatic query reformation (1993) 0.30 
    0.30375972 = sum of:
  0.30375972 = product of:
    0.7593993 = sum of:
      0.019109996 = weight(abstract_txt:with in 3693) [ClassicSimilarity], result of:
        0.019109996 = score(doc=3693,freq=5.0), product of:
          0.04376147 = queryWeight, product of:
            1.228138 = boost
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.0142544685 = queryNorm
          0.43668544 = fieldWeight in 3693, product of:
            2.236068 = tf(freq=5.0), with freq of:
              5.0 = termFreq=5.0
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.016298076 = weight(abstract_txt:systems in 3693) [ClassicSimilarity], result of:
        0.016298076 = score(doc=3693,freq=1.0), product of:
          0.061143853 = queryWeight, product of:
            1.2572112 = boost
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.0142544685 = queryNorm
          0.26655298 = fieldWeight in 3693, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.017221557 = weight(abstract_txt:retrieval in 3693) [ClassicSimilarity], result of:
        0.017221557 = score(doc=3693,freq=1.0), product of:
          0.06343226 = queryWeight, product of:
            1.2805216 = boost
            3.4751394 = idf(docFreq=3720, maxDocs=44218)
            0.0142544685 = queryNorm
          0.27149525 = fieldWeight in 3693, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4751394 = idf(docFreq=3720, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.04208661 = weight(abstract_txt:indicate in 3693) [ClassicSimilarity], result of:
        0.04208661 = score(doc=3693,freq=1.0), product of:
          0.10053735 = queryWeight, product of:
            1.316285 = boost
            5.358293 = idf(docFreq=565, maxDocs=44218)
            0.0142544685 = queryNorm
          0.41861665 = fieldWeight in 3693, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.358293 = idf(docFreq=565, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.02827129 = weight(abstract_txt:there in 3693) [ClassicSimilarity], result of:
        0.02827129 = score(doc=3693,freq=1.0), product of:
          0.08827254 = queryWeight, product of:
            1.5105833 = boost
            4.099491 = idf(docFreq=1992, maxDocs=44218)
            0.0142544685 = queryNorm
          0.32027274 = fieldWeight in 3693, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            4.099491 = idf(docFreq=1992, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.023106745 = weight(abstract_txt:results in 3693) [ClassicSimilarity], result of:
        0.023106745 = score(doc=3693,freq=1.0), product of:
          0.08493121 = queryWeight, product of:
            1.7109404 = boost
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.0142544685 = queryNorm
          0.27206424 = fieldWeight in 3693, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.08907588 = weight(abstract_txt:searchers in 3693) [ClassicSimilarity], result of:
        0.08907588 = score(doc=3693,freq=1.0), product of:
          0.18971513 = queryWeight, product of:
            2.2145364 = boost
            6.009912 = idf(docFreq=294, maxDocs=44218)
            0.0142544685 = queryNorm
          0.46952438 = fieldWeight in 3693, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.009912 = idf(docFreq=294, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.07681936 = weight(abstract_txt:performance in 3693) [ClassicSimilarity], result of:
        0.07681936 = score(doc=3693,freq=2.0), product of:
          0.1501569 = queryWeight, product of:
            2.2749605 = boost
            4.63042 = idf(docFreq=1171, maxDocs=44218)
            0.0142544685 = queryNorm
          0.51159394 = fieldWeight in 3693, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.63042 = idf(docFreq=1171, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.07608324 = weight(abstract_txt:searching in 3693) [ClassicSimilarity], result of:
        0.07608324 = score(doc=3693,freq=2.0), product of:
          0.16071662 = queryWeight, product of:
            2.6313984 = boost
            4.284727 = idf(docFreq=1655, maxDocs=44218)
            0.0142544685 = queryNorm
          0.47339994 = fieldWeight in 3693, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.284727 = idf(docFreq=1655, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
      0.37132654 = weight(abstract_txt:assistance in 3693) [ClassicSimilarity], result of:
        0.37132654 = score(doc=3693,freq=1.0), product of:
          0.7087172 = queryWeight, product of:
            7.413597 = boost
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.0142544685 = queryNorm
          0.52394176 = fieldWeight in 3693, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.078125 = fieldNorm(doc=3693)
    0.4 = coord(10/25)
  3. Riesthuis, G.J.A.; Colenbrander-Dijkman, A.-M.: Subject access to central catalogues : incompatibility issues of library classification systems and subject headings in subject cataloguing (1986) 0.19 
    0.1883481 = sum of:
  0.1883481 = product of:
    0.7847838 = sum of:
      0.010255501 = weight(abstract_txt:with in 3926) [ClassicSimilarity], result of:
        0.010255501 = score(doc=3926,freq=1.0), product of:
          0.04376147 = queryWeight, product of:
            1.228138 = boost
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.0142544685 = queryNorm
          0.23435001 = fieldWeight in 3926, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.09375 = fieldNorm(doc=3926)
      0.019557692 = weight(abstract_txt:systems in 3926) [ClassicSimilarity], result of:
        0.019557692 = score(doc=3926,freq=1.0), product of:
          0.061143853 = queryWeight, product of:
            1.2572112 = boost
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.0142544685 = queryNorm
          0.3198636 = fieldWeight in 3926, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.09375 = fieldNorm(doc=3926)
      0.029225953 = weight(abstract_txt:retrieval in 3926) [ClassicSimilarity], result of:
        0.029225953 = score(doc=3926,freq=2.0), product of:
          0.06343226 = queryWeight, product of:
            1.2805216 = boost
            3.4751394 = idf(docFreq=3720, maxDocs=44218)
            0.0142544685 = queryNorm
          0.4607427 = fieldWeight in 3926, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.4751394 = idf(docFreq=3720, maxDocs=44218)
            0.09375 = fieldNorm(doc=3926)
      0.10689105 = weight(abstract_txt:searchers in 3926) [ClassicSimilarity], result of:
        0.10689105 = score(doc=3926,freq=1.0), product of:
          0.18971513 = queryWeight, product of:
            2.2145364 = boost
            6.009912 = idf(docFreq=294, maxDocs=44218)
            0.0142544685 = queryNorm
          0.56342924 = fieldWeight in 3926, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.009912 = idf(docFreq=294, maxDocs=44218)
            0.09375 = fieldNorm(doc=3926)
      0.17326173 = weight(abstract_txt:automated in 3926) [ClassicSimilarity], result of:
        0.17326173 = score(doc=3926,freq=1.0), product of:
          0.32982698 = queryWeight, product of:
            4.1294284 = boost
            5.6033173 = idf(docFreq=442, maxDocs=44218)
            0.0142544685 = queryNorm
          0.525311 = fieldWeight in 3926, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.6033173 = idf(docFreq=442, maxDocs=44218)
            0.09375 = fieldNorm(doc=3926)
      0.44559187 = weight(abstract_txt:assistance in 3926) [ClassicSimilarity], result of:
        0.44559187 = score(doc=3926,freq=1.0), product of:
          0.7087172 = queryWeight, product of:
            7.413597 = boost
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.0142544685 = queryNorm
          0.6287301 = fieldWeight in 3926, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.09375 = fieldNorm(doc=3926)
    0.24 = coord(6/25)
  4. Ferl, T.E.; Millsap, L.: Remote use of the University of California MELVYL Library System : an online survey (1992) 0.18 
    0.18306963 = sum of:
  0.18306963 = product of:
    0.9153482 = sum of:
      0.013674001 = weight(abstract_txt:with in 3102) [ClassicSimilarity], result of:
        0.013674001 = score(doc=3102,freq=1.0), product of:
          0.04376147 = queryWeight, product of:
            1.228138 = boost
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.0142544685 = queryNorm
          0.31246668 = fieldWeight in 3102, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            2.4997334 = idf(docFreq=9868, maxDocs=44218)
            0.125 = fieldNorm(doc=3102)
      0.03697079 = weight(abstract_txt:results in 3102) [ClassicSimilarity], result of:
        0.03697079 = score(doc=3102,freq=1.0), product of:
          0.08493121 = queryWeight, product of:
            1.7109404 = boost
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.0142544685 = queryNorm
          0.43530276 = fieldWeight in 3102, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.125 = fieldNorm(doc=3102)
      0.1740174 = weight(abstract_txt:desire in 3102) [ClassicSimilarity], result of:
        0.1740174 = score(doc=3102,freq=1.0), product of:
          0.18932731 = queryWeight, product of:
            1.8063123 = boost
            7.3530817 = idf(docFreq=76, maxDocs=44218)
            0.0142544685 = queryNorm
          0.9191352 = fieldWeight in 3102, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            7.3530817 = idf(docFreq=76, maxDocs=44218)
            0.125 = fieldNorm(doc=3102)
      0.09656347 = weight(abstract_txt:patterns in 3102) [ClassicSimilarity], result of:
        0.09656347 = score(doc=3102,freq=1.0), product of:
          0.14634925 = queryWeight, product of:
            1.9450336 = boost
            5.2785225 = idf(docFreq=612, maxDocs=44218)
            0.0142544685 = queryNorm
          0.6598153 = fieldWeight in 3102, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            5.2785225 = idf(docFreq=612, maxDocs=44218)
            0.125 = fieldNorm(doc=3102)
      0.5941225 = weight(abstract_txt:assistance in 3102) [ClassicSimilarity], result of:
        0.5941225 = score(doc=3102,freq=1.0), product of:
          0.7087172 = queryWeight, product of:
            7.413597 = boost
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.0142544685 = queryNorm
          0.83830684 = fieldWeight in 3102, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.125 = fieldNorm(doc=3102)
    0.2 = coord(5/25)
  5. Jansen, B.J.; Booth, D.L.; Spink, A.: Patterns of query reformulation during Web searching (2009) 0.17 
    0.16639979 = sum of:
  0.16639979 = product of:
    0.6933325 = sum of:
      0.013038462 = weight(abstract_txt:systems in 2936) [ClassicSimilarity], result of:
        0.013038462 = score(doc=2936,freq=1.0), product of:
          0.061143853 = queryWeight, product of:
            1.2572112 = boost
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.0142544685 = queryNorm
          0.2132424 = fieldWeight in 2936, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            3.4118783 = idf(docFreq=3963, maxDocs=44218)
            0.0625 = fieldNorm(doc=2936)
      0.0738093 = weight(abstract_txt:approximately in 2936) [ClassicSimilarity], result of:
        0.0738093 = score(doc=2936,freq=1.0), product of:
          0.16965978 = queryWeight, product of:
            1.7099195 = boost
            6.9606886 = idf(docFreq=113, maxDocs=44218)
            0.0142544685 = queryNorm
          0.43504304 = fieldWeight in 2936, product of:
            1.0 = tf(freq=1.0), with freq of:
              1.0 = termFreq=1.0
            6.9606886 = idf(docFreq=113, maxDocs=44218)
            0.0625 = fieldNorm(doc=2936)
      0.032017644 = weight(abstract_txt:results in 2936) [ClassicSimilarity], result of:
        0.032017644 = score(doc=2936,freq=3.0), product of:
          0.08493121 = queryWeight, product of:
            1.7109404 = boost
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.0142544685 = queryNorm
          0.37698326 = fieldWeight in 2936, product of:
            1.7320508 = tf(freq=3.0), with freq of:
              3.0 = termFreq=3.0
            3.482422 = idf(docFreq=3693, maxDocs=44218)
            0.0625 = fieldNorm(doc=2936)
      0.06828069 = weight(abstract_txt:patterns in 2936) [ClassicSimilarity], result of:
        0.06828069 = score(doc=2936,freq=2.0), product of:
          0.14634925 = queryWeight, product of:
            1.9450336 = boost
            5.2785225 = idf(docFreq=612, maxDocs=44218)
            0.0142544685 = queryNorm
          0.4665599 = fieldWeight in 2936, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            5.2785225 = idf(docFreq=612, maxDocs=44218)
            0.0625 = fieldNorm(doc=2936)
      0.08607836 = weight(abstract_txt:searching in 2936) [ClassicSimilarity], result of:
        0.08607836 = score(doc=2936,freq=4.0), product of:
          0.16071662 = queryWeight, product of:
            2.6313984 = boost
            4.284727 = idf(docFreq=1655, maxDocs=44218)
            0.0142544685 = queryNorm
          0.5355909 = fieldWeight in 2936, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.284727 = idf(docFreq=1655, maxDocs=44218)
            0.0625 = fieldNorm(doc=2936)
      0.42010802 = weight(abstract_txt:assistance in 2936) [ClassicSimilarity], result of:
        0.42010802 = score(doc=2936,freq=2.0), product of:
          0.7087172 = queryWeight, product of:
            7.413597 = boost
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.0142544685 = queryNorm
          0.5927724 = fieldWeight in 2936, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            6.7064548 = idf(docFreq=146, maxDocs=44218)
            0.0625 = fieldNorm(doc=2936)
    0.24 = coord(6/25)