Document (#25579)

Author
Chen, H.-M.
Cooper, M.D.
Title
Stochastic modeling of usage patterns in a Web-based information system
Source
Journal of the American Society for Information Science and technology. 53(2002) no.7, S.536-548
Year
2002
Abstract
Users move from one state (or task) to another in an information system's labyrinth as they try to accomplish their work, and the amount of time they spend in each state varies. This article uses continuous-time stochastic models, mainly based on semi-Markov chains, to derive user state transition patterns (both in rates and in probabilities) in a Web-based information system. The methodology was demonstrated with 126,925 search sessions drawn from the transaction logs of the University of California's MELVYL® library catalog system (www.melvyLucop.edu). First, user sessions were categorized into six groups based on their similar use of the system. Second, by using a three-layer hierarchical taxonomy of the system Web pages, user sessions in each usage group were transformed into a sequence of states. All the usage groups but one have third-order sequential dependency in state transitions. The sole exception has fourth-order sequential dependency. The transition rates as well as transition probabilities of the semi-Markov model provide a background for interpreting user behavior probabilistically, at various levels of detail. Finally, the differences in derived usage patterns between usage groups were tested statistically. The test results showed that different groups have distinct patterns of system use. Knowledge of the extent of sequential dependency is beneficial because it allows one to predict a user's next move in a search space based on the past moves that have been made. It can also be used to help customize the design of the user interface to the system to facilitate interaction. The group CL6 labeled "knowledgeable and sophisticated usage" and the group CL7 labeled "unsophisticated usage" both had third-order sequential dependency and had the same most-frequently occurring search pattern: screen display, record display, screen display, and record display. The group CL8 called "highly interactive use with good search results" had fourth-order sequential dependency, and its most frequently occurring pattern was the same as CL6 and CL7 with one more screen display action added. The group CL13, called "known-item searching" had third-order sequential dependency, and its most frequently occurring pattern was index access, search with retrievals, screen display, and record display. Group CL14 called "help intensive searching," and CL18 called "relatively unsuccessful" both had thirdorder sequential dependency, and for both groups the most frequently occurring pattern was index access, search without retrievals, index access, and again, search without retrievals.
Theme
Internet
OPAC
Benutzerstudien
Object
WWW
MELVYL

Similar documents (author)

  1. Cooper, M.D.; Chen, H.-M.: Predicting the relevance of a library catalog search (2001) 4.47
    4.4659867 = sum of:
      4.4659867 = sum of:
        1.3471296 = weight(author_txt:chen in 520) [ClassicSimilarity], result of:
          1.3471296 = score(doc=520,freq=1.0), product of:
            0.49612227 = queryWeight, product of:
              6.2064404 = idf(docFreq=229, maxDocs=41962)
              0.07993668 = queryNorm
            2.7153177 = fieldWeight in 520, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              6.2064404 = idf(docFreq=229, maxDocs=41962)
              0.4375 = fieldNorm(doc=520)
        3.1188571 = weight(author_txt:cooper in 520) [ClassicSimilarity], result of:
          3.1188571 = score(doc=520,freq=1.0), product of:
            0.8682527 = queryWeight, product of:
              1.3229052 = boost
              8.210532 = idf(docFreq=30, maxDocs=41962)
              0.07993668 = queryNorm
            3.5921078 = fieldWeight in 520, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.210532 = idf(docFreq=30, maxDocs=41962)
              0.4375 = fieldNorm(doc=520)
    
  2. Chen, H.-M.; Cooper, M.D.: Using clustering techniques to detect usage patterns in a Web-based information system (2001) 4.47
    4.4659867 = sum of:
      4.4659867 = sum of:
        1.3471296 = weight(author_txt:chen in 527) [ClassicSimilarity], result of:
          1.3471296 = score(doc=527,freq=1.0), product of:
            0.49612227 = queryWeight, product of:
              6.2064404 = idf(docFreq=229, maxDocs=41962)
              0.07993668 = queryNorm
            2.7153177 = fieldWeight in 527, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              6.2064404 = idf(docFreq=229, maxDocs=41962)
              0.4375 = fieldNorm(doc=527)
        3.1188571 = weight(author_txt:cooper in 527) [ClassicSimilarity], result of:
          3.1188571 = score(doc=527,freq=1.0), product of:
            0.8682527 = queryWeight, product of:
              1.3229052 = boost
              8.210532 = idf(docFreq=30, maxDocs=41962)
              0.07993668 = queryNorm
            3.5921078 = fieldWeight in 527, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              8.210532 = idf(docFreq=30, maxDocs=41962)
              0.4375 = fieldNorm(doc=527)
    
  3. Cooper, W.S.: Indexing documents by Gedanken experimentation (1978) 2.23
    2.2277553 = sum of:
      2.2277553 = product of:
        4.4555106 = sum of:
          4.4555106 = weight(author_txt:cooper in 412) [ClassicSimilarity], result of:
            4.4555106 = score(doc=412,freq=1.0), product of:
              0.8682527 = queryWeight, product of:
                1.3229052 = boost
                8.210532 = idf(docFreq=30, maxDocs=41962)
                0.07993668 = queryNorm
              5.1315827 = fieldWeight in 412, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.210532 = idf(docFreq=30, maxDocs=41962)
                0.625 = fieldNorm(doc=412)
        0.5 = coord(1/2)
    
  4. Cooper, W.S.: ¬A definition for relevance in information retrieval (1971) 2.23
    2.2277553 = sum of:
      2.2277553 = product of:
        4.4555106 = sum of:
          4.4555106 = weight(author_txt:cooper in 842) [ClassicSimilarity], result of:
            4.4555106 = score(doc=842,freq=1.0), product of:
              0.8682527 = queryWeight, product of:
                1.3229052 = boost
                8.210532 = idf(docFreq=30, maxDocs=41962)
                0.07993668 = queryNorm
              5.1315827 = fieldWeight in 842, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.210532 = idf(docFreq=30, maxDocs=41962)
                0.625 = fieldNorm(doc=842)
        0.5 = coord(1/2)
    
  5. Cooper, W.S.: Is interindexer consistency a hobgoblin? (1969) 2.23
    2.2277553 = sum of:
      2.2277553 = product of:
        4.4555106 = sum of:
          4.4555106 = weight(author_txt:cooper in 2273) [ClassicSimilarity], result of:
            4.4555106 = score(doc=2273,freq=1.0), product of:
              0.8682527 = queryWeight, product of:
                1.3229052 = boost
                8.210532 = idf(docFreq=30, maxDocs=41962)
                0.07993668 = queryNorm
              5.1315827 = fieldWeight in 2273, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.210532 = idf(docFreq=30, maxDocs=41962)
                0.625 = fieldNorm(doc=2273)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Liu, Y.; Huang, X.; An, A.: Personalized recommendation with adaptive mixture of markov models (2007) 0.22
    0.21780147 = sum of:
      0.21780147 = product of:
        0.6806296 = sum of:
          0.1561535 = weight(abstract_txt:markov in 2607) [ClassicSimilarity], result of:
            0.1561535 = score(doc=2607,freq=5.0), product of:
              0.13763508 = queryWeight, product of:
                1.0070907 = boost
                8.118159 = idf(docFreq=33, maxDocs=41962)
                0.016834607 = queryNorm
              1.1345472 = fieldWeight in 2607, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                8.118159 = idf(docFreq=33, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
          0.08041435 = weight(abstract_txt:stochastic in 2607) [ClassicSimilarity], result of:
            0.08041435 = score(doc=2607,freq=1.0), product of:
              0.15120763 = queryWeight, product of:
                1.0555793 = boost
                8.509026 = idf(docFreq=22, maxDocs=41962)
                0.016834607 = queryNorm
              0.5318141 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.509026 = idf(docFreq=22, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
          0.03639466 = weight(abstract_txt:user in 2607) [ClassicSimilarity], result of:
            0.03639466 = score(doc=2607,freq=5.0), product of:
              0.070745654 = queryWeight, product of:
                1.1416261 = boost
                3.6810596 = idf(docFreq=2873, maxDocs=41962)
                0.016834607 = queryNorm
              0.51444376 = fieldWeight in 2607, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.6810596 = idf(docFreq=2873, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
          0.039630536 = weight(abstract_txt:patterns in 2607) [ClassicSimilarity], result of:
            0.039630536 = score(doc=2607,freq=1.0), product of:
              0.11886335 = queryWeight, product of:
                1.3235581 = boost
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.016834607 = queryNorm
              0.3334126 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
          0.024574043 = weight(abstract_txt:system in 2607) [ClassicSimilarity], result of:
            0.024574043 = score(doc=2607,freq=2.0), product of:
              0.08267009 = queryWeight, product of:
                1.4601997 = boost
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.016834607 = queryNorm
              0.29725432 = fieldWeight in 2607, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
          0.043783873 = weight(abstract_txt:groups in 2607) [ClassicSimilarity], result of:
            0.043783873 = score(doc=2607,freq=1.0), product of:
              0.13683823 = queryWeight, product of:
                1.587734 = boost
                5.11949 = idf(docFreq=681, maxDocs=41962)
                0.016834607 = queryNorm
              0.31996813 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.11949 = idf(docFreq=681, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
          0.06516899 = weight(abstract_txt:group in 2607) [ClassicSimilarity], result of:
            0.06516899 = score(doc=2607,freq=2.0), product of:
              0.15045585 = queryWeight, product of:
                1.8237664 = boost
                4.9004607 = idf(docFreq=848, maxDocs=41962)
                0.016834607 = queryNorm
              0.43314362 = fieldWeight in 2607, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9004607 = idf(docFreq=848, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
          0.23450963 = weight(abstract_txt:sequential in 2607) [ClassicSimilarity], result of:
            0.23450963 = score(doc=2607,freq=1.0), product of:
              0.46861315 = queryWeight, product of:
                3.4765244 = boost
                8.006933 = idf(docFreq=37, maxDocs=41962)
                0.016834607 = queryNorm
              0.5004333 = fieldWeight in 2607, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.006933 = idf(docFreq=37, maxDocs=41962)
                0.0625 = fieldNorm(doc=2607)
        0.32 = coord(8/25)
    
  2. Xie, I.; Joo, S.: Transitions in search tactics during the Web-based search process (2010) 0.20
    0.20371576 = sum of:
      0.20371576 = product of:
        0.5658771 = sum of:
          0.06836927 = weight(abstract_txt:probabilities in 1098) [ClassicSimilarity], result of:
            0.06836927 = score(doc=1098,freq=1.0), product of:
              0.13570379 = queryWeight, product of:
                8.061001 = idf(docFreq=35, maxDocs=41962)
                0.016834607 = queryNorm
              0.50381255 = fieldWeight in 1098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.061001 = idf(docFreq=35, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.06983397 = weight(abstract_txt:markov in 1098) [ClassicSimilarity], result of:
            0.06983397 = score(doc=1098,freq=1.0), product of:
              0.13763508 = queryWeight, product of:
                1.0070907 = boost
                8.118159 = idf(docFreq=33, maxDocs=41962)
                0.016834607 = queryNorm
              0.50738496 = fieldWeight in 1098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.118159 = idf(docFreq=33, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.06052801 = weight(abstract_txt:transition in 1098) [ClassicSimilarity], result of:
            0.06052801 = score(doc=1098,freq=1.0), product of:
              0.14322516 = queryWeight, product of:
                1.258228 = boost
                6.761718 = idf(docFreq=131, maxDocs=41962)
                0.016834607 = queryNorm
              0.42260736 = fieldWeight in 1098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.761718 = idf(docFreq=131, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.039630536 = weight(abstract_txt:patterns in 1098) [ClassicSimilarity], result of:
            0.039630536 = score(doc=1098,freq=1.0), product of:
              0.11886335 = queryWeight, product of:
                1.3235581 = boost
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.016834607 = queryNorm
              0.3334126 = fieldWeight in 1098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.029260838 = weight(abstract_txt:order in 1098) [ClassicSimilarity], result of:
            0.029260838 = score(doc=1098,freq=1.0), product of:
              0.10459779 = queryWeight, product of:
                1.3881465 = boost
                4.4759398 = idf(docFreq=1297, maxDocs=41962)
                0.016834607 = queryNorm
              0.27974623 = fieldWeight in 1098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4759398 = idf(docFreq=1297, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.030096931 = weight(abstract_txt:system in 1098) [ClassicSimilarity], result of:
            0.030096931 = score(doc=1098,freq=3.0), product of:
              0.08267009 = queryWeight, product of:
                1.4601997 = boost
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.016834607 = queryNorm
              0.3640607 = fieldWeight in 1098, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.08189657 = weight(abstract_txt:frequently in 1098) [ClassicSimilarity], result of:
            0.08189657 = score(doc=1098,freq=2.0), product of:
              0.15306005 = queryWeight, product of:
                1.5019308 = boost
                6.0535326 = idf(docFreq=267, maxDocs=41962)
                0.016834607 = queryNorm
              0.5350617 = fieldWeight in 1098, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.0535326 = idf(docFreq=267, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.08064756 = weight(abstract_txt:search in 1098) [ClassicSimilarity], result of:
            0.08064756 = score(doc=1098,freq=13.0), product of:
              0.09782586 = queryWeight, product of:
                1.5884182 = boost
                3.6583548 = idf(docFreq=2939, maxDocs=41962)
                0.016834607 = queryNorm
              0.8243991 = fieldWeight in 1098, product of:
                3.6055512 = tf(freq=13.0), with freq of:
                  13.0 = termFreq=13.0
                3.6583548 = idf(docFreq=2939, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
          0.10561342 = weight(abstract_txt:occurring in 1098) [ClassicSimilarity], result of:
            0.10561342 = score(doc=1098,freq=1.0), product of:
              0.22847608 = queryWeight, product of:
                1.835014 = boost
                7.3960247 = idf(docFreq=69, maxDocs=41962)
                0.016834607 = queryNorm
              0.46225154 = fieldWeight in 1098, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3960247 = idf(docFreq=69, maxDocs=41962)
                0.0625 = fieldNorm(doc=1098)
        0.36 = coord(9/25)
    
  3. Qiu, L.: Markov models of search state patterns in a hypertext information retrieval system (1993) 0.19
    0.19357724 = sum of:
      0.19357724 = product of:
        0.6049289 = sum of:
          0.14814022 = weight(abstract_txt:markov in 5296) [ClassicSimilarity], result of:
            0.14814022 = score(doc=5296,freq=2.0), product of:
              0.13763508 = queryWeight, product of:
                1.0070907 = boost
                8.118159 = idf(docFreq=33, maxDocs=41962)
                0.016834607 = queryNorm
              1.076326 = fieldWeight in 5296, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.118159 = idf(docFreq=33, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
          0.024414279 = weight(abstract_txt:user in 5296) [ClassicSimilarity], result of:
            0.024414279 = score(doc=5296,freq=1.0), product of:
              0.070745654 = queryWeight, product of:
                1.1416261 = boost
                3.6810596 = idf(docFreq=2873, maxDocs=41962)
                0.016834607 = queryNorm
              0.34509933 = fieldWeight in 5296, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6810596 = idf(docFreq=2873, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
          0.045719236 = weight(abstract_txt:state in 5296) [ClassicSimilarity], result of:
            0.045719236 = score(doc=5296,freq=1.0), product of:
              0.09977762 = queryWeight, product of:
                1.2126503 = boost
                4.8875875 = idf(docFreq=859, maxDocs=41962)
                0.016834607 = queryNorm
              0.45821133 = fieldWeight in 5296, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8875875 = idf(docFreq=859, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
          0.09079201 = weight(abstract_txt:transition in 5296) [ClassicSimilarity], result of:
            0.09079201 = score(doc=5296,freq=1.0), product of:
              0.14322516 = queryWeight, product of:
                1.258228 = boost
                6.761718 = idf(docFreq=131, maxDocs=41962)
                0.016834607 = queryNorm
              0.633911 = fieldWeight in 5296, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.761718 = idf(docFreq=131, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
          0.084069066 = weight(abstract_txt:patterns in 5296) [ClassicSimilarity], result of:
            0.084069066 = score(doc=5296,freq=2.0), product of:
              0.11886335 = queryWeight, product of:
                1.3235581 = boost
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.016834607 = queryNorm
              0.7072749 = fieldWeight in 5296, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
          0.04389126 = weight(abstract_txt:order in 5296) [ClassicSimilarity], result of:
            0.04389126 = score(doc=5296,freq=1.0), product of:
              0.10459779 = queryWeight, product of:
                1.3881465 = boost
                4.4759398 = idf(docFreq=1297, maxDocs=41962)
                0.016834607 = queryNorm
              0.41961935 = fieldWeight in 5296, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4759398 = idf(docFreq=1297, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
          0.09287962 = weight(abstract_txt:groups in 5296) [ClassicSimilarity], result of:
            0.09287962 = score(doc=5296,freq=2.0), product of:
              0.13683823 = queryWeight, product of:
                1.587734 = boost
                5.11949 = idf(docFreq=681, maxDocs=41962)
                0.016834607 = queryNorm
              0.6787549 = fieldWeight in 5296, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.11949 = idf(docFreq=681, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
          0.075023234 = weight(abstract_txt:search in 5296) [ClassicSimilarity], result of:
            0.075023234 = score(doc=5296,freq=5.0), product of:
              0.09782586 = queryWeight, product of:
                1.5884182 = boost
                3.6583548 = idf(docFreq=2939, maxDocs=41962)
                0.016834607 = queryNorm
              0.76690596 = fieldWeight in 5296, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.6583548 = idf(docFreq=2939, maxDocs=41962)
                0.09375 = fieldNorm(doc=5296)
        0.32 = coord(8/25)
    
  4. Chen, R.-S.; Hu, Y.-C.: ¬A novel method for discovering Fuzzy sequential patterns using the simple Fuzzy partition method (2003) 0.19
    0.19040668 = sum of:
      0.19040668 = product of:
        0.7933612 = sum of:
          0.07926107 = weight(abstract_txt:patterns in 2615) [ClassicSimilarity], result of:
            0.07926107 = score(doc=2615,freq=4.0), product of:
              0.11886335 = queryWeight, product of:
                1.3235581 = boost
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.016834607 = queryNorm
              0.6668252 = fieldWeight in 2615, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.0625 = fieldNorm(doc=2615)
          0.017376471 = weight(abstract_txt:system in 2615) [ClassicSimilarity], result of:
            0.017376471 = score(doc=2615,freq=1.0), product of:
              0.08267009 = queryWeight, product of:
                1.4601997 = boost
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.016834607 = queryNorm
              0.21019055 = fieldWeight in 2615, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.0625 = fieldNorm(doc=2615)
          0.057909627 = weight(abstract_txt:frequently in 2615) [ClassicSimilarity], result of:
            0.057909627 = score(doc=2615,freq=1.0), product of:
              0.15306005 = queryWeight, product of:
                1.5019308 = boost
                6.0535326 = idf(docFreq=267, maxDocs=41962)
                0.016834607 = queryNorm
              0.3783458 = fieldWeight in 2615, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.0535326 = idf(docFreq=267, maxDocs=41962)
                0.0625 = fieldNorm(doc=2615)
          0.06418133 = weight(abstract_txt:pattern in 2615) [ClassicSimilarity], result of:
            0.06418133 = score(doc=2615,freq=1.0), product of:
              0.1639207 = queryWeight, product of:
                1.5543039 = boost
                6.264622 = idf(docFreq=216, maxDocs=41962)
                0.016834607 = queryNorm
              0.3915389 = fieldWeight in 2615, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.264622 = idf(docFreq=216, maxDocs=41962)
                0.0625 = fieldNorm(doc=2615)
          0.10561342 = weight(abstract_txt:occurring in 2615) [ClassicSimilarity], result of:
            0.10561342 = score(doc=2615,freq=1.0), product of:
              0.22847608 = queryWeight, product of:
                1.835014 = boost
                7.3960247 = idf(docFreq=69, maxDocs=41962)
                0.016834607 = queryNorm
              0.46225154 = fieldWeight in 2615, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.3960247 = idf(docFreq=69, maxDocs=41962)
                0.0625 = fieldNorm(doc=2615)
          0.46901926 = weight(abstract_txt:sequential in 2615) [ClassicSimilarity], result of:
            0.46901926 = score(doc=2615,freq=4.0), product of:
              0.46861315 = queryWeight, product of:
                3.4765244 = boost
                8.006933 = idf(docFreq=37, maxDocs=41962)
                0.016834607 = queryNorm
              1.0008667 = fieldWeight in 2615, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                8.006933 = idf(docFreq=37, maxDocs=41962)
                0.0625 = fieldNorm(doc=2615)
        0.24 = coord(6/25)
    
  5. Chen, H.-M.; Cooper, M.D.: Using clustering techniques to detect usage patterns in a Web-based information system (2001) 0.18
    0.18276213 = sum of:
      0.18276213 = product of:
        0.50767255 = sum of:
          0.041901402 = weight(abstract_txt:third in 527) [ClassicSimilarity], result of:
            0.041901402 = score(doc=527,freq=1.0), product of:
              0.11208155 = queryWeight, product of:
                1.1130552 = boost
                5.9815593 = idf(docFreq=287, maxDocs=41962)
                0.016834607 = queryNorm
              0.37384745 = fieldWeight in 527, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.9815593 = idf(docFreq=287, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.023018003 = weight(abstract_txt:user in 527) [ClassicSimilarity], result of:
            0.023018003 = score(doc=527,freq=2.0), product of:
              0.070745654 = queryWeight, product of:
                1.1416261 = boost
                3.6810596 = idf(docFreq=2873, maxDocs=41962)
                0.016834607 = queryNorm
              0.32536277 = fieldWeight in 527, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6810596 = idf(docFreq=2873, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.103455156 = weight(abstract_txt:sessions in 527) [ClassicSimilarity], result of:
            0.103455156 = score(doc=527,freq=3.0), product of:
              0.1419633 = queryWeight, product of:
                1.2526729 = boost
                6.731865 = idf(docFreq=135, maxDocs=41962)
                0.016834607 = queryNorm
              0.72874576 = fieldWeight in 527, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.731865 = idf(docFreq=135, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.056046046 = weight(abstract_txt:patterns in 527) [ClassicSimilarity], result of:
            0.056046046 = score(doc=527,freq=2.0), product of:
              0.11886335 = queryWeight, product of:
                1.3235581 = boost
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.016834607 = queryNorm
              0.4715166 = fieldWeight in 527, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.3346014 = idf(docFreq=549, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.034752943 = weight(abstract_txt:system in 527) [ClassicSimilarity], result of:
            0.034752943 = score(doc=527,freq=4.0), product of:
              0.08267009 = queryWeight, product of:
                1.4601997 = boost
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.016834607 = queryNorm
              0.4203811 = fieldWeight in 527, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.3630488 = idf(docFreq=3949, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.061919745 = weight(abstract_txt:groups in 527) [ClassicSimilarity], result of:
            0.061919745 = score(doc=527,freq=2.0), product of:
              0.13683823 = queryWeight, product of:
                1.587734 = boost
                5.11949 = idf(docFreq=681, maxDocs=41962)
                0.016834607 = queryNorm
              0.45250326 = fieldWeight in 527, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.11949 = idf(docFreq=681, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.022367606 = weight(abstract_txt:search in 527) [ClassicSimilarity], result of:
            0.022367606 = score(doc=527,freq=1.0), product of:
              0.09782586 = queryWeight, product of:
                1.5884182 = boost
                3.6583548 = idf(docFreq=2939, maxDocs=41962)
                0.016834607 = queryNorm
              0.22864717 = fieldWeight in 527, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6583548 = idf(docFreq=2939, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.046081435 = weight(abstract_txt:group in 527) [ClassicSimilarity], result of:
            0.046081435 = score(doc=527,freq=1.0), product of:
              0.15045585 = queryWeight, product of:
                1.8237664 = boost
                4.9004607 = idf(docFreq=848, maxDocs=41962)
                0.016834607 = queryNorm
              0.3062788 = fieldWeight in 527, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9004607 = idf(docFreq=848, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
          0.118130244 = weight(abstract_txt:usage in 527) [ClassicSimilarity], result of:
            0.118130244 = score(doc=527,freq=2.0), product of:
              0.23547135 = queryWeight, product of:
                2.4643767 = boost
                5.6758122 = idf(docFreq=390, maxDocs=41962)
                0.016834607 = queryNorm
              0.50167567 = fieldWeight in 527, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.6758122 = idf(docFreq=390, maxDocs=41962)
                0.0625 = fieldNorm(doc=527)
        0.36 = coord(9/25)