Document (#8773)

Author
Kiestra, M.D.
Stokmans, M.J.M.
Kamphuis, J.
Title
End-user searching the online catalogue : the influence of domain and system knowledge on search patterns
Source
Electronic library. 12(1994) no.6, S.335-343
Year
1994
Abstract
In order to test the impact of system and domain knowledge on search behaviour in an online catalogue, an experiment was set up in a university library where students from three specialisation areas performed a number of search tasks in the online catalogue. The subjects differed in the amount of domain and system knowledge. In two sessions the subjects performed searches inside and outside their 'own' domain. During the first session, half of the group received instruction in catalogue use and the other half did not. To observe whether the induced differences in system knowledge had effects on the search performance, a second session was carried out. Subjects' search behaviour was videotaped and their comments recorded (They were encouraged to think aloud). Results show that the amount of system knowledge had a significant effect on search time as well as on the number of search patterns observed. regarding domain knowledge, only one out of the six analyses concerning search time or the amount of patterns yielded a significant effect. A possible explanation for this result could be the questionable validity of the criteria used to distinguish between known and unknown domains. The difference in knowledge regarding familiar and unfamiliar domains is not as large as had been expected. The notion of end-users displaying habitual modes of behaviour is given considerable support by the data. This is reflected by the limited number of patterns observed
Theme
OPAC
Benutzerstudien

Similar documents (content)

  1. Toms, E.G.; Freund, L.; Li, C.: WilRE: the Web Interactive information retrieval experimentation system prototype (2004) 0.20
    0.19891079 = sum of:
      0.19891079 = product of:
        0.6215962 = sum of:
          0.02765404 = weight(abstract_txt:time in 2534) [ClassicSimilarity], result of:
            0.02765404 = score(doc=2534,freq=1.0), product of:
              0.085328706 = queryWeight, product of:
                1.0294518 = boost
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.01998093 = queryNorm
              0.32408836 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
          0.04197348 = weight(abstract_txt:significant in 2534) [ClassicSimilarity], result of:
            0.04197348 = score(doc=2534,freq=1.0), product of:
              0.112695366 = queryWeight, product of:
                1.1830728 = boost
                4.76737 = idf(docFreq=1021, maxDocs=44218)
                0.01998093 = queryNorm
              0.3724508 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.76737 = idf(docFreq=1021, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
          0.028632618 = weight(abstract_txt:online in 2534) [ClassicSimilarity], result of:
            0.028632618 = score(doc=2534,freq=1.0), product of:
              0.0999679 = queryWeight, product of:
                1.3646911 = boost
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.01998093 = queryNorm
              0.28641814 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
          0.10220235 = weight(abstract_txt:half in 2534) [ClassicSimilarity], result of:
            0.10220235 = score(doc=2534,freq=1.0), product of:
              0.20396861 = queryWeight, product of:
                1.5916227 = boost
                6.4136834 = idf(docFreq=196, maxDocs=44218)
                0.01998093 = queryNorm
              0.501069 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4136834 = idf(docFreq=196, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
          0.12018045 = weight(abstract_txt:session in 2534) [ClassicSimilarity], result of:
            0.12018045 = score(doc=2534,freq=1.0), product of:
              0.22723679 = queryWeight, product of:
                1.6799555 = boost
                6.769634 = idf(docFreq=137, maxDocs=44218)
                0.01998093 = queryNorm
              0.5288776 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.769634 = idf(docFreq=137, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
          0.05252611 = weight(abstract_txt:system in 2534) [ClassicSimilarity], result of:
            0.05252611 = score(doc=2534,freq=2.0), product of:
              0.14097525 = queryWeight, product of:
                2.092184 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.01998093 = queryNorm
              0.372591 = fieldWeight in 2534, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
          0.11705338 = weight(abstract_txt:amount in 2534) [ClassicSimilarity], result of:
            0.11705338 = score(doc=2534,freq=1.0), product of:
              0.2555892 = queryWeight, product of:
                2.1821034 = boost
                5.8620763 = idf(docFreq=341, maxDocs=44218)
                0.01998093 = queryNorm
              0.4579747 = fieldWeight in 2534, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.8620763 = idf(docFreq=341, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
          0.1313738 = weight(abstract_txt:search in 2534) [ClassicSimilarity], result of:
            0.1313738 = score(doc=2534,freq=3.0), product of:
              0.2654044 = queryWeight, product of:
                3.631136 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.01998093 = queryNorm
              0.49499476 = fieldWeight in 2534, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.078125 = fieldNorm(doc=2534)
        0.32 = coord(8/25)
    
  2. Meadows, C.J.: ¬A study of user performance and attitudes with information retrieval interfaces (1995) 0.20
    0.19769764 = sum of:
      0.19769764 = product of:
        0.6178051 = sum of:
          0.022123232 = weight(abstract_txt:time in 2674) [ClassicSimilarity], result of:
            0.022123232 = score(doc=2674,freq=1.0), product of:
              0.085328706 = queryWeight, product of:
                1.0294518 = boost
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.01998093 = queryNorm
              0.2592707 = fieldWeight in 2674, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
          0.022906095 = weight(abstract_txt:online in 2674) [ClassicSimilarity], result of:
            0.022906095 = score(doc=2674,freq=1.0), product of:
              0.0999679 = queryWeight, product of:
                1.3646911 = boost
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.01998093 = queryNorm
              0.22913451 = fieldWeight in 2674, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6661522 = idf(docFreq=3073, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
          0.07410171 = weight(abstract_txt:subjects in 2674) [ClassicSimilarity], result of:
            0.07410171 = score(doc=2674,freq=1.0), product of:
              0.21866469 = queryWeight, product of:
                2.0183358 = boost
                5.4221253 = idf(docFreq=530, maxDocs=44218)
                0.01998093 = queryNorm
              0.33888283 = fieldWeight in 2674, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4221253 = idf(docFreq=530, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
          0.029713253 = weight(abstract_txt:system in 2674) [ClassicSimilarity], result of:
            0.029713253 = score(doc=2674,freq=1.0), product of:
              0.14097525 = queryWeight, product of:
                2.092184 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.01998093 = queryNorm
              0.21076928 = fieldWeight in 2674, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
          0.1525607 = weight(abstract_txt:behaviour in 2674) [ClassicSimilarity], result of:
            0.1525607 = score(doc=2674,freq=3.0), product of:
              0.24536608 = queryWeight, product of:
                2.138018 = boost
                5.7436438 = idf(docFreq=384, maxDocs=44218)
                0.01998093 = queryNorm
              0.62176764 = fieldWeight in 2674, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.7436438 = idf(docFreq=384, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
          0.14251207 = weight(abstract_txt:domain in 2674) [ClassicSimilarity], result of:
            0.14251207 = score(doc=2674,freq=3.0), product of:
              0.27799487 = queryWeight, product of:
                2.9379666 = boost
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.01998093 = queryNorm
              0.5126428 = fieldWeight in 2674, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
          0.06878909 = weight(abstract_txt:knowledge in 2674) [ClassicSimilarity], result of:
            0.06878909 = score(doc=2674,freq=2.0), product of:
              0.219056 = queryWeight, product of:
                3.0858161 = boost
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.01998093 = queryNorm
              0.31402513 = fieldWeight in 2674, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
          0.10509903 = weight(abstract_txt:search in 2674) [ClassicSimilarity], result of:
            0.10509903 = score(doc=2674,freq=3.0), product of:
              0.2654044 = queryWeight, product of:
                3.631136 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.01998093 = queryNorm
              0.3959958 = fieldWeight in 2674, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.0625 = fieldNorm(doc=2674)
        0.32 = coord(8/25)
    
  3. Hirsh, S.G.; Borgman, C.L.: Comparing children's use of browsing and keyword searching on the Science Library catalog (1995) 0.17
    0.16724706 = sum of:
      0.16724706 = product of:
        0.69686276 = sum of:
          0.06433108 = weight(abstract_txt:system in 3825) [ClassicSimilarity], result of:
            0.06433108 = score(doc=3825,freq=3.0), product of:
              0.14097525 = queryWeight, product of:
                2.092184 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.01998093 = queryNorm
              0.45632887 = fieldWeight in 3825, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.078125 = fieldNorm(doc=3825)
          0.19070086 = weight(abstract_txt:behaviour in 3825) [ClassicSimilarity], result of:
            0.19070086 = score(doc=3825,freq=3.0), product of:
              0.24536608 = queryWeight, product of:
                2.138018 = boost
                5.7436438 = idf(docFreq=384, maxDocs=44218)
                0.01998093 = queryNorm
              0.7772095 = fieldWeight in 3825, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.7436438 = idf(docFreq=384, maxDocs=44218)
                0.078125 = fieldNorm(doc=3825)
          0.10129781 = weight(abstract_txt:catalogue in 3825) [ClassicSimilarity], result of:
            0.10129781 = score(doc=3825,freq=1.0), product of:
              0.2554658 = queryWeight, product of:
                2.5190678 = boost
                5.0754814 = idf(docFreq=750, maxDocs=44218)
                0.01998093 = queryNorm
              0.396522 = fieldWeight in 3825, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0754814 = idf(docFreq=750, maxDocs=44218)
                0.078125 = fieldNorm(doc=3825)
          0.10284923 = weight(abstract_txt:domain in 3825) [ClassicSimilarity], result of:
            0.10284923 = score(doc=3825,freq=1.0), product of:
              0.27799487 = queryWeight, product of:
                2.9379666 = boost
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.01998093 = queryNorm
              0.3699681 = fieldWeight in 3825, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.078125 = fieldNorm(doc=3825)
          0.08598636 = weight(abstract_txt:knowledge in 3825) [ClassicSimilarity], result of:
            0.08598636 = score(doc=3825,freq=2.0), product of:
              0.219056 = queryWeight, product of:
                3.0858161 = boost
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.01998093 = queryNorm
              0.39253142 = fieldWeight in 3825, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.078125 = fieldNorm(doc=3825)
          0.15169738 = weight(abstract_txt:search in 3825) [ClassicSimilarity], result of:
            0.15169738 = score(doc=3825,freq=4.0), product of:
              0.2654044 = queryWeight, product of:
                3.631136 = boost
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.01998093 = queryNorm
              0.5715707 = fieldWeight in 3825, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6580524 = idf(docFreq=3098, maxDocs=44218)
                0.078125 = fieldNorm(doc=3825)
        0.24 = coord(6/25)
    
  4. Galal, G.M.; Cook, D.J.; Holder, L.B.: Exploiting parallelism in a structural scientific discovery system to improve scalability (1999) 0.16
    0.16450645 = sum of:
      0.16450645 = product of:
        0.58752304 = sum of:
          0.02765404 = weight(abstract_txt:time in 2952) [ClassicSimilarity], result of:
            0.02765404 = score(doc=2952,freq=1.0), product of:
              0.085328706 = queryWeight, product of:
                1.0294518 = boost
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.01998093 = queryNorm
              0.32408836 = fieldWeight in 2952, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.078125 = fieldNorm(doc=2952)
          0.06766158 = weight(abstract_txt:domains in 2952) [ClassicSimilarity], result of:
            0.06766158 = score(doc=2952,freq=1.0), product of:
              0.15493546 = queryWeight, product of:
                1.3871833 = boost
                5.5898643 = idf(docFreq=448, maxDocs=44218)
                0.01998093 = queryNorm
              0.43670815 = fieldWeight in 2952, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.5898643 = idf(docFreq=448, maxDocs=44218)
                0.078125 = fieldNorm(doc=2952)
          0.074208796 = weight(abstract_txt:performed in 2952) [ClassicSimilarity], result of:
            0.074208796 = score(doc=2952,freq=1.0), product of:
              0.16477564 = queryWeight, product of:
                1.4305563 = boost
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.01998093 = queryNorm
              0.45036268 = fieldWeight in 2952, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.078125 = fieldNorm(doc=2952)
          0.05252611 = weight(abstract_txt:system in 2952) [ClassicSimilarity], result of:
            0.05252611 = score(doc=2952,freq=2.0), product of:
              0.14097525 = queryWeight, product of:
                2.092184 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.01998093 = queryNorm
              0.372591 = fieldWeight in 2952, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.078125 = fieldNorm(doc=2952)
          0.16553849 = weight(abstract_txt:amount in 2952) [ClassicSimilarity], result of:
            0.16553849 = score(doc=2952,freq=2.0), product of:
              0.2555892 = queryWeight, product of:
                2.1821034 = boost
                5.8620763 = idf(docFreq=341, maxDocs=44218)
                0.01998093 = queryNorm
              0.6476741 = fieldWeight in 2952, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.8620763 = idf(docFreq=341, maxDocs=44218)
                0.078125 = fieldNorm(doc=2952)
          0.113947675 = weight(abstract_txt:patterns in 2952) [ClassicSimilarity], result of:
            0.113947675 = score(doc=2952,freq=1.0), product of:
              0.2763141 = queryWeight, product of:
                2.6198413 = boost
                5.2785225 = idf(docFreq=612, maxDocs=44218)
                0.01998093 = queryNorm
              0.41238457 = fieldWeight in 2952, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.2785225 = idf(docFreq=612, maxDocs=44218)
                0.078125 = fieldNorm(doc=2952)
          0.08598636 = weight(abstract_txt:knowledge in 2952) [ClassicSimilarity], result of:
            0.08598636 = score(doc=2952,freq=2.0), product of:
              0.219056 = queryWeight, product of:
                3.0858161 = boost
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.01998093 = queryNorm
              0.39253142 = fieldWeight in 2952, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.078125 = fieldNorm(doc=2952)
        0.28 = coord(7/25)
    
  5. Toms, E.G.; Kinnucan, M.T.: ¬The effectiveness of the electronic city metaphor for organizing the menus of free-nets (1996) 0.16
    0.16299666 = sum of:
      0.16299666 = product of:
        0.5093646 = sum of:
          0.031286977 = weight(abstract_txt:time in 6505) [ClassicSimilarity], result of:
            0.031286977 = score(doc=6505,freq=2.0), product of:
              0.085328706 = queryWeight, product of:
                1.0294518 = boost
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.01998093 = queryNorm
              0.36666414 = fieldWeight in 6505, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.148331 = idf(docFreq=1897, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
          0.049608104 = weight(abstract_txt:effect in 6505) [ClassicSimilarity], result of:
            0.049608104 = score(doc=6505,freq=1.0), product of:
              0.14618333 = queryWeight, product of:
                1.3474336 = boost
                5.4296865 = idf(docFreq=526, maxDocs=44218)
                0.01998093 = queryNorm
              0.3393554 = fieldWeight in 6505, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4296865 = idf(docFreq=526, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
          0.05936704 = weight(abstract_txt:performed in 6505) [ClassicSimilarity], result of:
            0.05936704 = score(doc=6505,freq=1.0), product of:
              0.16477564 = queryWeight, product of:
                1.4305563 = boost
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.01998093 = queryNorm
              0.36029014 = fieldWeight in 6505, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7646422 = idf(docFreq=376, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
          0.04640023 = weight(abstract_txt:number in 6505) [ClassicSimilarity], result of:
            0.04640023 = score(doc=6505,freq=2.0), product of:
              0.12702717 = queryWeight, product of:
                1.5383402 = boost
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.01998093 = queryNorm
              0.365278 = fieldWeight in 6505, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.132649 = idf(docFreq=1927, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
          0.09614436 = weight(abstract_txt:session in 6505) [ClassicSimilarity], result of:
            0.09614436 = score(doc=6505,freq=1.0), product of:
              0.22723679 = queryWeight, product of:
                1.6799555 = boost
                6.769634 = idf(docFreq=137, maxDocs=44218)
                0.01998093 = queryNorm
              0.4231021 = fieldWeight in 6505, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.769634 = idf(docFreq=137, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
          0.14820342 = weight(abstract_txt:subjects in 6505) [ClassicSimilarity], result of:
            0.14820342 = score(doc=6505,freq=4.0), product of:
              0.21866469 = queryWeight, product of:
                2.0183358 = boost
                5.4221253 = idf(docFreq=530, maxDocs=44218)
                0.01998093 = queryNorm
              0.67776567 = fieldWeight in 6505, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.4221253 = idf(docFreq=530, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
          0.029713253 = weight(abstract_txt:system in 6505) [ClassicSimilarity], result of:
            0.029713253 = score(doc=6505,freq=1.0), product of:
              0.14097525 = queryWeight, product of:
                2.092184 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.01998093 = queryNorm
              0.21076928 = fieldWeight in 6505, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
          0.04864123 = weight(abstract_txt:knowledge in 6505) [ClassicSimilarity], result of:
            0.04864123 = score(doc=6505,freq=1.0), product of:
              0.219056 = queryWeight, product of:
                3.0858161 = boost
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.01998093 = queryNorm
              0.2220493 = fieldWeight in 6505, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5527887 = idf(docFreq=3442, maxDocs=44218)
                0.0625 = fieldNorm(doc=6505)
        0.32 = coord(8/25)