Document (#38607)

Author
Liu, J.
Belkin, N.J.
Title
Personalizing information retrieval for multi-session tasks : examining the roles of task stage, task type, and topic knowledge on the interpretation of dwell time as an indicator of document usefulness
Source
Journal of the Association for Information Science and Technology. 66(2015) no.1, S.58-81
Year
2015
Abstract
Personalization of information retrieval tailors search towards individual users to meet their particular information needs by taking into account information about users and their contexts, often through implicit sources of evidence such as user behaviors. This study looks at users' dwelling behavior on documents and several contextual factors: the stage of users' work tasks, task type, and users' knowledge of task topics, to explore whether or not taking account contextual factors could help infer document usefulness from dwell time. A controlled laboratory experiment was conducted with 24 participants, each coming 3 times to work on 3 subtasks in a general work task. The results show that task stage could help interpret certain types of dwell time as reliable indicators of document usefulness in certain task types, as was topic knowledge, and the latter played a more significant role when both were available. This study contributes to a better understanding of how dwell time can be used as implicit evidence of document usefulness, as well as how contextual factors can help interpret dwell time as an indicator of usefulness. These findings have both theoretical and practical implications for using behaviors and contextual factors in the development of personalization systems.
Content
Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23160/abstract.

Similar documents (author)

  1. Belkin, N.J.: ¬The problem of 'matching' in information retrieval (1980) 5.03
    5.027635 = sum of:
      5.027635 = weight(author_txt:belkin in 1329) [ClassicSimilarity], result of:
        5.027635 = fieldWeight in 1329, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.044216 = idf(docFreq=37, maxDocs=43556)
          0.625 = fieldNorm(doc=1329)
    
  2. Belkin, N.J.: ¬The cognitive viewpoint in information science (1990) 5.03
    5.027635 = sum of:
      5.027635 = weight(author_txt:belkin in 2709) [ClassicSimilarity], result of:
        5.027635 = fieldWeight in 2709, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.044216 = idf(docFreq=37, maxDocs=43556)
          0.625 = fieldNorm(doc=2709)
    
  3. Belkin, N.J.: Anomalous states of knowledge as a basis for information retrieval (1980) 5.03
    5.027635 = sum of:
      5.027635 = weight(author_txt:belkin in 2711) [ClassicSimilarity], result of:
        5.027635 = fieldWeight in 2711, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.044216 = idf(docFreq=37, maxDocs=43556)
          0.625 = fieldNorm(doc=2711)
    
  4. Belkin, N.J.: Cognitive models and information transfer (1984) 5.03
    5.027635 = sum of:
      5.027635 = weight(author_txt:belkin in 2712) [ClassicSimilarity], result of:
        5.027635 = fieldWeight in 2712, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.044216 = idf(docFreq=37, maxDocs=43556)
          0.625 = fieldNorm(doc=2712)
    
  5. Belkin, N.J.: Information concepts for information science (1978) 5.03
    5.027635 = sum of:
      5.027635 = weight(author_txt:belkin in 4102) [ClassicSimilarity], result of:
        5.027635 = fieldWeight in 4102, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          8.044216 = idf(docFreq=37, maxDocs=43556)
          0.625 = fieldNorm(doc=4102)
    

Similar documents (content)

  1. Cai, F.; Wang, S.; Rijke, M.de: Behavior-based personalization in web search (2017) 0.34
    0.33693817 = sum of:
      0.33693817 = product of:
        0.9359394 = sum of:
          0.024403302 = weight(abstract_txt:type in 525) [ClassicSimilarity], result of:
            0.024403302 = score(doc=525,freq=1.0), product of:
              0.07803656 = queryWeight, product of:
                1.0278381 = boost
                5.0034604 = idf(docFreq=794, maxDocs=43556)
                0.015174099 = queryNorm
              0.31271628 = fieldWeight in 525, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0034604 = idf(docFreq=794, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.016168563 = weight(abstract_txt:work in 525) [ClassicSimilarity], result of:
            0.016168563 = score(doc=525,freq=1.0), product of:
              0.06789072 = queryWeight, product of:
                1.1741579 = boost
                3.8104916 = idf(docFreq=2620, maxDocs=43556)
                0.015174099 = queryNorm
              0.23815572 = fieldWeight in 525, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.8104916 = idf(docFreq=2620, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.045724533 = weight(abstract_txt:behaviors in 525) [ClassicSimilarity], result of:
            0.045724533 = score(doc=525,freq=1.0), product of:
              0.11860379 = queryWeight, product of:
                1.267141 = boost
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.015174099 = queryNorm
              0.38552338 = fieldWeight in 525, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.03281167 = weight(abstract_txt:help in 525) [ClassicSimilarity], result of:
            0.03281167 = score(doc=525,freq=1.0), product of:
              0.10882158 = queryWeight, product of:
                1.4865475 = boost
                4.824289 = idf(docFreq=950, maxDocs=43556)
                0.015174099 = queryNorm
              0.30151805 = fieldWeight in 525, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.824289 = idf(docFreq=950, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.091382556 = weight(abstract_txt:personalization in 525) [ClassicSimilarity], result of:
            0.091382556 = score(doc=525,freq=1.0), product of:
              0.18818048 = queryWeight, product of:
                1.5961105 = boost
                7.7697797 = idf(docFreq=49, maxDocs=43556)
                0.015174099 = queryNorm
              0.48561123 = fieldWeight in 525, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7697797 = idf(docFreq=49, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.05322996 = weight(abstract_txt:document in 525) [ClassicSimilarity], result of:
            0.05322996 = score(doc=525,freq=3.0), product of:
              0.114658445 = queryWeight, product of:
                1.7619504 = boost
                4.28854 = idf(docFreq=1624, maxDocs=43556)
                0.015174099 = queryNorm
              0.46424806 = fieldWeight in 525, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.28854 = idf(docFreq=1624, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.05437241 = weight(abstract_txt:users in 525) [ClassicSimilarity], result of:
            0.05437241 = score(doc=525,freq=6.0), product of:
              0.09942929 = queryWeight, product of:
                1.8344371 = boost
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.015174099 = queryNorm
              0.546845 = fieldWeight in 525, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.049527492 = weight(abstract_txt:time in 525) [ClassicSimilarity], result of:
            0.049527492 = score(doc=525,freq=2.0), product of:
              0.1347514 = queryWeight, product of:
                2.1355627 = boost
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.015174099 = queryNorm
              0.36754715 = fieldWeight in 525, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
          0.5683189 = weight(abstract_txt:dwell in 525) [ClassicSimilarity], result of:
            0.5683189 = score(doc=525,freq=2.0), product of:
              0.68553627 = queryWeight, product of:
                4.8168254 = boost
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.015174099 = queryNorm
              0.8290136 = fieldWeight in 525, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.0625 = fieldNorm(doc=525)
        0.36 = coord(9/25)
    
  2. Liu, J.; Liu, C.; Belkin, N.J.: Predicting information searchers' topic knowledge at different search stages (2016) 0.33
    0.32568237 = sum of:
      0.32568237 = product of:
        0.9046732 = sum of:
          0.07209025 = weight(abstract_txt:topic in 145) [ClassicSimilarity], result of:
            0.07209025 = score(doc=145,freq=8.0), product of:
              0.08033166 = queryWeight, product of:
                1.0428432 = boost
                5.0765047 = idf(docFreq=738, maxDocs=43556)
                0.015174099 = queryNorm
              0.8974077 = fieldWeight in 145, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                5.0765047 = idf(docFreq=738, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.027348738 = weight(abstract_txt:tasks in 145) [ClassicSimilarity], result of:
            0.027348738 = score(doc=145,freq=1.0), product of:
              0.08419583 = queryWeight, product of:
                1.0676304 = boost
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.015174099 = queryNorm
              0.32482296 = fieldWeight in 145, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.03781346 = weight(abstract_txt:knowledge in 145) [ClassicSimilarity], result of:
            0.03781346 = score(doc=145,freq=8.0), product of:
              0.059808612 = queryWeight, product of:
                1.1020547 = boost
                3.5764952 = idf(docFreq=3311, maxDocs=43556)
                0.015174099 = queryNorm
              0.632241 = fieldWeight in 145, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.5764952 = idf(docFreq=3311, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.09144907 = weight(abstract_txt:behaviors in 145) [ClassicSimilarity], result of:
            0.09144907 = score(doc=145,freq=4.0), product of:
              0.11860379 = queryWeight, product of:
                1.267141 = boost
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.015174099 = queryNorm
              0.77104676 = fieldWeight in 145, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.091382556 = weight(abstract_txt:personalization in 145) [ClassicSimilarity], result of:
            0.091382556 = score(doc=145,freq=1.0), product of:
              0.18818048 = queryWeight, product of:
                1.5961105 = boost
                7.7697797 = idf(docFreq=49, maxDocs=43556)
                0.015174099 = queryNorm
              0.48561123 = fieldWeight in 145, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7697797 = idf(docFreq=49, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.044394884 = weight(abstract_txt:users in 145) [ClassicSimilarity], result of:
            0.044394884 = score(doc=145,freq=4.0), product of:
              0.09942929 = queryWeight, product of:
                1.8344371 = boost
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.015174099 = queryNorm
              0.44649705 = fieldWeight in 145, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.035021227 = weight(abstract_txt:time in 145) [ClassicSimilarity], result of:
            0.035021227 = score(doc=145,freq=1.0), product of:
              0.1347514 = queryWeight, product of:
                2.1355627 = boost
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.015174099 = queryNorm
              0.2598951 = fieldWeight in 145, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.1033109 = weight(abstract_txt:contextual in 145) [ClassicSimilarity], result of:
            0.1033109 = score(doc=145,freq=1.0), product of:
              0.25730002 = queryWeight, product of:
                2.6394324 = boost
                6.4243073 = idf(docFreq=191, maxDocs=43556)
                0.015174099 = queryNorm
              0.4015192 = fieldWeight in 145, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4243073 = idf(docFreq=191, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
          0.40186214 = weight(abstract_txt:dwell in 145) [ClassicSimilarity], result of:
            0.40186214 = score(doc=145,freq=1.0), product of:
              0.68553627 = queryWeight, product of:
                4.8168254 = boost
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.015174099 = queryNorm
              0.58620113 = fieldWeight in 145, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.0625 = fieldNorm(doc=145)
        0.36 = coord(9/25)
    
  3. Liu, J.; Liu, C.: Personalization in text information retrieval : a survey (2020) 0.27
    0.26512295 = sum of:
      0.26512295 = product of:
        0.7364526 = sum of:
          0.034185924 = weight(abstract_txt:tasks in 2047) [ClassicSimilarity], result of:
            0.034185924 = score(doc=2047,freq=1.0), product of:
              0.08419583 = queryWeight, product of:
                1.0676304 = boost
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.015174099 = queryNorm
              0.4060287 = fieldWeight in 2047, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.039070457 = weight(abstract_txt:account in 2047) [ClassicSimilarity], result of:
            0.039070457 = score(doc=2047,freq=1.0), product of:
              0.09203606 = queryWeight, product of:
                1.1162325 = boost
                5.4337597 = idf(docFreq=516, maxDocs=43556)
                0.015174099 = queryNorm
              0.42451248 = fieldWeight in 2047, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.4337597 = idf(docFreq=516, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.051766515 = weight(abstract_txt:taking in 2047) [ClassicSimilarity], result of:
            0.051766515 = score(doc=2047,freq=1.0), product of:
              0.11102607 = queryWeight, product of:
                1.2259934 = boost
                5.96807 = idf(docFreq=302, maxDocs=43556)
                0.015174099 = queryNorm
              0.4662555 = fieldWeight in 2047, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.96807 = idf(docFreq=302, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.057155665 = weight(abstract_txt:behaviors in 2047) [ClassicSimilarity], result of:
            0.057155665 = score(doc=2047,freq=1.0), product of:
              0.11860379 = queryWeight, product of:
                1.267141 = boost
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.015174099 = queryNorm
              0.4819042 = fieldWeight in 2047, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.168374 = idf(docFreq=247, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.2284564 = weight(abstract_txt:personalization in 2047) [ClassicSimilarity], result of:
            0.2284564 = score(doc=2047,freq=4.0), product of:
              0.18818048 = queryWeight, product of:
                1.5961105 = boost
                7.7697797 = idf(docFreq=49, maxDocs=43556)
                0.015174099 = queryNorm
              1.2140281 = fieldWeight in 2047, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                7.7697797 = idf(docFreq=49, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.067965515 = weight(abstract_txt:users in 2047) [ClassicSimilarity], result of:
            0.067965515 = score(doc=2047,freq=6.0), product of:
              0.09942929 = queryWeight, product of:
                1.8344371 = boost
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.015174099 = queryNorm
              0.68355626 = fieldWeight in 2047, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.08493698 = weight(abstract_txt:factors in 2047) [ClassicSimilarity], result of:
            0.08493698 = score(doc=2047,freq=2.0), product of:
              0.15445083 = queryWeight, product of:
                2.0449646 = boost
                4.9773884 = idf(docFreq=815, maxDocs=43556)
                0.015174099 = queryNorm
              0.5499289 = fieldWeight in 2047, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.9773884 = idf(docFreq=815, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.04377653 = weight(abstract_txt:time in 2047) [ClassicSimilarity], result of:
            0.04377653 = score(doc=2047,freq=1.0), product of:
              0.1347514 = queryWeight, product of:
                2.1355627 = boost
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.015174099 = queryNorm
              0.32486886 = fieldWeight in 2047, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
          0.12913862 = weight(abstract_txt:contextual in 2047) [ClassicSimilarity], result of:
            0.12913862 = score(doc=2047,freq=1.0), product of:
              0.25730002 = queryWeight, product of:
                2.6394324 = boost
                6.4243073 = idf(docFreq=191, maxDocs=43556)
                0.015174099 = queryNorm
              0.501899 = fieldWeight in 2047, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.4243073 = idf(docFreq=191, maxDocs=43556)
                0.078125 = fieldNorm(doc=2047)
        0.36 = coord(9/25)
    
  4. Kellar, M.; Watters, C.; Shepherd, M.: ¬A field study characterizing Web-based information seeking tasks (2007) 0.22
    0.22009863 = sum of:
      0.22009863 = product of:
        0.78606653 = sum of:
          0.024403302 = weight(abstract_txt:type in 2333) [ClassicSimilarity], result of:
            0.024403302 = score(doc=2333,freq=1.0), product of:
              0.07803656 = queryWeight, product of:
                1.0278381 = boost
                5.0034604 = idf(docFreq=794, maxDocs=43556)
                0.015174099 = queryNorm
              0.31271628 = fieldWeight in 2333, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0034604 = idf(docFreq=794, maxDocs=43556)
                0.0625 = fieldNorm(doc=2333)
          0.047369402 = weight(abstract_txt:tasks in 2333) [ClassicSimilarity], result of:
            0.047369402 = score(doc=2333,freq=3.0), product of:
              0.08419583 = queryWeight, product of:
                1.0676304 = boost
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.015174099 = queryNorm
              0.56260985 = fieldWeight in 2333, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.0625 = fieldNorm(doc=2333)
          0.05909394 = weight(abstract_txt:implicit in 2333) [ClassicSimilarity], result of:
            0.05909394 = score(doc=2333,freq=1.0), product of:
              0.14072168 = queryWeight, product of:
                1.380245 = boost
                6.718958 = idf(docFreq=142, maxDocs=43556)
                0.015174099 = queryNorm
              0.41993487 = fieldWeight in 2333, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.718958 = idf(docFreq=142, maxDocs=43556)
                0.0625 = fieldNorm(doc=2333)
          0.022197442 = weight(abstract_txt:users in 2333) [ClassicSimilarity], result of:
            0.022197442 = score(doc=2333,freq=1.0), product of:
              0.09942929 = queryWeight, product of:
                1.8344371 = boost
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.015174099 = queryNorm
              0.22324853 = fieldWeight in 2333, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5719764 = idf(docFreq=3326, maxDocs=43556)
                0.0625 = fieldNorm(doc=2333)
          0.049527492 = weight(abstract_txt:time in 2333) [ClassicSimilarity], result of:
            0.049527492 = score(doc=2333,freq=2.0), product of:
              0.1347514 = queryWeight, product of:
                2.1355627 = boost
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.015174099 = queryNorm
              0.36754715 = fieldWeight in 2333, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.0625 = fieldNorm(doc=2333)
          0.18161279 = weight(abstract_txt:task in 2333) [ClassicSimilarity], result of:
            0.18161279 = score(doc=2333,freq=5.0), product of:
              0.2641168 = queryWeight, product of:
                3.5375915 = boost
                4.92023 = idf(docFreq=863, maxDocs=43556)
                0.015174099 = queryNorm
              0.687623 = fieldWeight in 2333, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.92023 = idf(docFreq=863, maxDocs=43556)
                0.0625 = fieldNorm(doc=2333)
          0.40186214 = weight(abstract_txt:dwell in 2333) [ClassicSimilarity], result of:
            0.40186214 = score(doc=2333,freq=1.0), product of:
              0.68553627 = queryWeight, product of:
                4.8168254 = boost
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.015174099 = queryNorm
              0.58620113 = fieldWeight in 2333, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.0625 = fieldNorm(doc=2333)
        0.28 = coord(7/25)
    
  5. Vakkari, P.; Völske, M.; Potthast, M.; Hagen, M.; Stein, B.: Modeling the usefulness of search results as measured by information use (2019) 0.21
    0.21130648 = sum of:
      0.21130648 = product of:
        0.8804437 = sum of:
          0.03867696 = weight(abstract_txt:tasks in 1392) [ClassicSimilarity], result of:
            0.03867696 = score(doc=1392,freq=2.0), product of:
              0.08419583 = queryWeight, product of:
                1.0676304 = boost
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.015174099 = queryNorm
              0.45936903 = fieldWeight in 1392, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.1971674 = idf(docFreq=654, maxDocs=43556)
                0.0625 = fieldNorm(doc=1392)
          0.048047613 = weight(abstract_txt:factors in 1392) [ClassicSimilarity], result of:
            0.048047613 = score(doc=1392,freq=1.0), product of:
              0.15445083 = queryWeight, product of:
                2.0449646 = boost
                4.9773884 = idf(docFreq=815, maxDocs=43556)
                0.015174099 = queryNorm
              0.31108677 = fieldWeight in 1392, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9773884 = idf(docFreq=815, maxDocs=43556)
                0.0625 = fieldNorm(doc=1392)
          0.035021227 = weight(abstract_txt:time in 1392) [ClassicSimilarity], result of:
            0.035021227 = score(doc=1392,freq=1.0), product of:
              0.1347514 = queryWeight, product of:
                2.1355627 = boost
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.015174099 = queryNorm
              0.2598951 = fieldWeight in 1392, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1583214 = idf(docFreq=1850, maxDocs=43556)
                0.0625 = fieldNorm(doc=1392)
          0.21615909 = weight(abstract_txt:usefulness in 1392) [ClassicSimilarity], result of:
            0.21615909 = score(doc=1392,freq=4.0), product of:
              0.2856328 = queryWeight, product of:
                3.1092074 = boost
                6.0541816 = idf(docFreq=277, maxDocs=43556)
                0.015174099 = queryNorm
              0.7567727 = fieldWeight in 1392, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.0541816 = idf(docFreq=277, maxDocs=43556)
                0.0625 = fieldNorm(doc=1392)
          0.14067666 = weight(abstract_txt:task in 1392) [ClassicSimilarity], result of:
            0.14067666 = score(doc=1392,freq=3.0), product of:
              0.2641168 = queryWeight, product of:
                3.5375915 = boost
                4.92023 = idf(docFreq=863, maxDocs=43556)
                0.015174099 = queryNorm
              0.5326305 = fieldWeight in 1392, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.92023 = idf(docFreq=863, maxDocs=43556)
                0.0625 = fieldNorm(doc=1392)
          0.40186214 = weight(abstract_txt:dwell in 1392) [ClassicSimilarity], result of:
            0.40186214 = score(doc=1392,freq=1.0), product of:
              0.68553627 = queryWeight, product of:
                4.8168254 = boost
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.015174099 = queryNorm
              0.58620113 = fieldWeight in 1392, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.379218 = idf(docFreq=9, maxDocs=43556)
                0.0625 = fieldNorm(doc=1392)
        0.24 = coord(6/25)