Document (#38824)

Author
Zhang, X.
Liu, J.
Cole, M.
Belkin, N.
Title
Predicting users' domain knowledge in information retrieval using multiple regression analysis of search behaviors
Source
Journal of the Association for Information Science and Technology. 66(2015) no.5, S.980-1000
Year
2015
Abstract
User domain knowledge affects search behaviors and search success. Predicting a user's knowledge level from implicit evidence such as search behaviors could allow an adaptive information retrieval system to better personalize its interaction with users. This study examines whether user domain knowledge can be predicted from search behaviors by applying a regression modeling analysis method. We identify behavioral features that contribute most to a successful prediction model. A user experiment was conducted with 40 participants searching on task topics in the domain of genomics. Participant domain knowledge level was assessed based on the users' familiarity with and expertise in the search topics and their knowledge of MeSH (Medical Subject Headings) terms in the categories that corresponded to the search topics. Users' search behaviors were captured by logging software, which includes querying behaviors, document selection behaviors, and general task interaction behaviors. Multiple regression analysis was run on the behavioral data using different variable selection methods. Four successful predictive models were identified, each involving a slightly different set of behavioral variables. The models were compared for the best on model fit, significance of the model, and contributions of individual predictors in each model. Each model was validated using the split sampling method. The final model highlights three behavioral variables as domain knowledge level predictors: the number of documents saved, the average query length, and the average ranking position of the documents opened. The results are discussed, study limitations are addressed, and future research directions are suggested.
Content
Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23218/abstract.
Theme
Informationsdienstleistungen

Similar documents (author)

  1. Belkin, N.J.: ¬The problem of 'matching' in information retrieval (1980) 1.12
    1.1158429 = sum of:
      1.1158429 = product of:
        3.3475287 = sum of:
          3.3475287 = weight(author_txt:belkin in 1329) [ClassicSimilarity], result of:
            3.3475287 = score(doc=1329,freq=1.0), product of:
              0.66602856 = queryWeight, product of:
                1.2143563 = boost
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.06820171 = queryNorm
              5.026104 = fieldWeight in 1329, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.625 = fieldNorm(doc=1329)
        0.33333334 = coord(1/3)
    
  2. Belkin, N.J.: ¬The cognitive viewpoint in information science (1990) 1.12
    1.1158429 = sum of:
      1.1158429 = product of:
        3.3475287 = sum of:
          3.3475287 = weight(author_txt:belkin in 2709) [ClassicSimilarity], result of:
            3.3475287 = score(doc=2709,freq=1.0), product of:
              0.66602856 = queryWeight, product of:
                1.2143563 = boost
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.06820171 = queryNorm
              5.026104 = fieldWeight in 2709, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.625 = fieldNorm(doc=2709)
        0.33333334 = coord(1/3)
    
  3. Belkin, N.J.: Anomalous states of knowledge as a basis for information retrieval (1980) 1.12
    1.1158429 = sum of:
      1.1158429 = product of:
        3.3475287 = sum of:
          3.3475287 = weight(author_txt:belkin in 2711) [ClassicSimilarity], result of:
            3.3475287 = score(doc=2711,freq=1.0), product of:
              0.66602856 = queryWeight, product of:
                1.2143563 = boost
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.06820171 = queryNorm
              5.026104 = fieldWeight in 2711, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.625 = fieldNorm(doc=2711)
        0.33333334 = coord(1/3)
    
  4. Belkin, N.J.: Cognitive models and information transfer (1984) 1.12
    1.1158429 = sum of:
      1.1158429 = product of:
        3.3475287 = sum of:
          3.3475287 = weight(author_txt:belkin in 2712) [ClassicSimilarity], result of:
            3.3475287 = score(doc=2712,freq=1.0), product of:
              0.66602856 = queryWeight, product of:
                1.2143563 = boost
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.06820171 = queryNorm
              5.026104 = fieldWeight in 2712, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.625 = fieldNorm(doc=2712)
        0.33333334 = coord(1/3)
    
  5. Belkin, N.J.: Information concepts for information science (1978) 1.12
    1.1158429 = sum of:
      1.1158429 = product of:
        3.3475287 = sum of:
          3.3475287 = weight(author_txt:belkin in 4102) [ClassicSimilarity], result of:
            3.3475287 = score(doc=4102,freq=1.0), product of:
              0.66602856 = queryWeight, product of:
                1.2143563 = boost
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.06820171 = queryNorm
              5.026104 = fieldWeight in 4102, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.041766 = idf(docFreq=36, maxDocs=42306)
                0.625 = fieldNorm(doc=4102)
        0.33333334 = coord(1/3)
    

Similar documents (content)

  1. Liu, J.; Liu, C.; Belkin, N.J.: Predicting information searchers' topic knowledge at different search stages (2016) 0.47
    0.471155 = sum of:
      0.471155 = product of:
        1.1778874 = sum of:
          0.020315861 = weight(abstract_txt:using in 66) [ClassicSimilarity], result of:
            0.020315861 = score(doc=66,freq=2.0), product of:
              0.06592029 = queryWeight, product of:
                1.0776244 = boost
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.017544081 = queryNorm
              0.30818826 = fieldWeight in 66, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.029776033 = weight(abstract_txt:were in 66) [ClassicSimilarity], result of:
            0.029776033 = score(doc=66,freq=3.0), product of:
              0.07430359 = queryWeight, product of:
                1.1440967 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.017544081 = queryNorm
              0.40073478 = fieldWeight in 66, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.024124386 = weight(abstract_txt:each in 66) [ClassicSimilarity], result of:
            0.024124386 = score(doc=66,freq=1.0), product of:
              0.093134336 = queryWeight, product of:
                1.2808927 = boost
                4.1444454 = idf(docFreq=1822, maxDocs=42306)
                0.017544081 = queryNorm
              0.25902784 = fieldWeight in 66, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1444454 = idf(docFreq=1822, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.08010418 = weight(abstract_txt:variables in 66) [ClassicSimilarity], result of:
            0.08010418 = score(doc=66,freq=2.0), product of:
              0.143726 = queryWeight, product of:
                1.2992116 = boost
                6.305577 = idf(docFreq=209, maxDocs=42306)
                0.017544081 = queryNorm
              0.5573395 = fieldWeight in 66, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.305577 = idf(docFreq=209, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.041406922 = weight(abstract_txt:users in 66) [ClassicSimilarity], result of:
            0.041406922 = score(doc=66,freq=4.0), product of:
              0.09257219 = queryWeight, product of:
                1.4745771 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.017544081 = queryNorm
              0.4472933 = fieldWeight in 66, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.044491377 = weight(abstract_txt:model in 66) [ClassicSimilarity], result of:
            0.044491377 = score(doc=66,freq=1.0), product of:
              0.1764681 = queryWeight, product of:
                2.4934804 = boost
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.017544081 = queryNorm
              0.25212136 = fieldWeight in 66, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.10463201 = weight(abstract_txt:knowledge in 66) [ClassicSimilarity], result of:
            0.10463201 = score(doc=66,freq=8.0), product of:
              0.16426472 = queryWeight, product of:
                2.5984743 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.017544081 = queryNorm
              0.6369719 = fieldWeight in 66, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.13245136 = weight(abstract_txt:search in 66) [ClassicSimilarity], result of:
            0.13245136 = score(doc=66,freq=9.0), product of:
              0.1932348 = queryWeight, product of:
                3.012901 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.017544081 = queryNorm
              0.68544257 = fieldWeight in 66, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.25643462 = weight(abstract_txt:behavioral in 66) [ClassicSimilarity], result of:
            0.25643462 = score(doc=66,freq=2.0), product of:
              0.39333236 = queryWeight, product of:
                3.0395343 = boost
                7.376018 = idf(docFreq=71, maxDocs=42306)
                0.017544081 = queryNorm
              0.65195405 = fieldWeight in 66, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.376018 = idf(docFreq=71, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
          0.4441507 = weight(abstract_txt:behaviors in 66) [ClassicSimilarity], result of:
            0.4441507 = score(doc=66,freq=4.0), product of:
              0.5672774 = queryWeight, product of:
                5.162261 = boost
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.017544081 = queryNorm
              0.78295153 = fieldWeight in 66, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.0625 = fieldNorm(doc=66)
        0.4 = coord(10/25)
    
  2. Li, X.; Rijke, M.de: Characterizing and predicting downloads in academic search (2019) 0.38
    0.38075548 = sum of:
      0.38075548 = product of:
        0.8653534 = sum of:
          0.027373219 = weight(abstract_txt:task in 2021) [ClassicSimilarity], result of:
            0.027373219 = score(doc=2021,freq=1.0), product of:
              0.08851003 = queryWeight, product of:
                1.0195498 = boost
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.017544081 = queryNorm
              0.30926687 = fieldWeight in 2021, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.020315861 = weight(abstract_txt:using in 2021) [ClassicSimilarity], result of:
            0.020315861 = score(doc=2021,freq=2.0), product of:
              0.06592029 = queryWeight, product of:
                1.0776244 = boost
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.017544081 = queryNorm
              0.30818826 = fieldWeight in 2021, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.03327607 = weight(abstract_txt:interaction in 2021) [ClassicSimilarity], result of:
            0.03327607 = score(doc=2021,freq=1.0), product of:
              0.1008161 = queryWeight, product of:
                1.0881209 = boost
                5.281072 = idf(docFreq=584, maxDocs=42306)
                0.017544081 = queryNorm
              0.330067 = fieldWeight in 2021, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.281072 = idf(docFreq=584, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.023861881 = weight(abstract_txt:user in 2021) [ClassicSimilarity], result of:
            0.023861881 = score(doc=2021,freq=2.0), product of:
              0.07338356 = queryWeight, product of:
                1.1369916 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.017544081 = queryNorm
              0.32516658 = fieldWeight in 2021, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.017166687 = weight(abstract_txt:analysis in 2021) [ClassicSimilarity], result of:
            0.017166687 = score(doc=2021,freq=1.0), product of:
              0.074232936 = queryWeight, product of:
                1.1435527 = boost
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.017544081 = queryNorm
              0.23125432 = fieldWeight in 2021, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.035859447 = weight(abstract_txt:users in 2021) [ClassicSimilarity], result of:
            0.035859447 = score(doc=2021,freq=3.0), product of:
              0.09257219 = queryWeight, product of:
                1.4745771 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.017544081 = queryNorm
              0.38736737 = fieldWeight in 2021, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.1712523 = weight(abstract_txt:predicting in 2021) [ClassicSimilarity], result of:
            0.1712523 = score(doc=2021,freq=3.0), product of:
              0.20836547 = queryWeight, product of:
                1.5643182 = boost
                7.5922413 = idf(docFreq=57, maxDocs=42306)
                0.017544081 = queryNorm
              0.8218842 = fieldWeight in 2021, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.5922413 = idf(docFreq=57, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.06292031 = weight(abstract_txt:model in 2021) [ClassicSimilarity], result of:
            0.06292031 = score(doc=2021,freq=2.0), product of:
              0.1764681 = queryWeight, product of:
                2.4934804 = boost
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.017544081 = queryNorm
              0.35655344 = fieldWeight in 2021, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.12859215 = weight(abstract_txt:domain in 2021) [ClassicSimilarity], result of:
            0.12859215 = score(doc=2021,freq=3.0), product of:
              0.24826655 = queryWeight, product of:
                2.957549 = boost
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.017544081 = queryNorm
              0.51796 = fieldWeight in 2021, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.78471 = idf(docFreq=960, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.088300906 = weight(abstract_txt:search in 2021) [ClassicSimilarity], result of:
            0.088300906 = score(doc=2021,freq=4.0), product of:
              0.1932348 = queryWeight, product of:
                3.012901 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.017544081 = queryNorm
              0.45696172 = fieldWeight in 2021, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
          0.25643462 = weight(abstract_txt:behavioral in 2021) [ClassicSimilarity], result of:
            0.25643462 = score(doc=2021,freq=2.0), product of:
              0.39333236 = queryWeight, product of:
                3.0395343 = boost
                7.376018 = idf(docFreq=71, maxDocs=42306)
                0.017544081 = queryNorm
              0.65195405 = fieldWeight in 2021, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.376018 = idf(docFreq=71, maxDocs=42306)
                0.0625 = fieldNorm(doc=2021)
        0.44 = coord(11/25)
    
  3. Hendahewa, C.; Shah, C.: Implicit search feature based approach to assist users in exploratory search tasks (2015) 0.31
    0.31494018 = sum of:
      0.31494018 = product of:
        0.71577317 = sum of:
          0.038711578 = weight(abstract_txt:task in 4679) [ClassicSimilarity], result of:
            0.038711578 = score(doc=4679,freq=2.0), product of:
              0.08851003 = queryWeight, product of:
                1.0195498 = boost
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.017544081 = queryNorm
              0.43736938 = fieldWeight in 4679, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.024881745 = weight(abstract_txt:using in 4679) [ClassicSimilarity], result of:
            0.024881745 = score(doc=4679,freq=3.0), product of:
              0.06592029 = queryWeight, product of:
                1.0776244 = boost
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.017544081 = queryNorm
              0.377452 = fieldWeight in 4679, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.029224718 = weight(abstract_txt:user in 4679) [ClassicSimilarity], result of:
            0.029224718 = score(doc=4679,freq=3.0), product of:
              0.07338356 = queryWeight, product of:
                1.1369916 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.017544081 = queryNorm
              0.3982461 = fieldWeight in 4679, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.024277361 = weight(abstract_txt:analysis in 4679) [ClassicSimilarity], result of:
            0.024277361 = score(doc=4679,freq=2.0), product of:
              0.074232936 = queryWeight, product of:
                1.1435527 = boost
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.017544081 = queryNorm
              0.327043 = fieldWeight in 4679, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.031685423 = weight(abstract_txt:level in 4679) [ClassicSimilarity], result of:
            0.031685423 = score(doc=4679,freq=1.0), product of:
              0.11169798 = queryWeight, product of:
                1.4027507 = boost
                4.538728 = idf(docFreq=1228, maxDocs=42306)
                0.017544081 = queryNorm
              0.2836705 = fieldWeight in 4679, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.538728 = idf(docFreq=1228, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.046294343 = weight(abstract_txt:users in 4679) [ClassicSimilarity], result of:
            0.046294343 = score(doc=4679,freq=5.0), product of:
              0.09257219 = queryWeight, product of:
                1.4745771 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.017544081 = queryNorm
              0.5000891 = fieldWeight in 4679, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.045767717 = weight(abstract_txt:topics in 4679) [ClassicSimilarity], result of:
            0.045767717 = score(doc=4679,freq=1.0), product of:
              0.14272887 = queryWeight, product of:
                1.5856736 = boost
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.017544081 = queryNorm
              0.32066196 = fieldWeight in 4679, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.06292031 = weight(abstract_txt:model in 4679) [ClassicSimilarity], result of:
            0.06292031 = score(doc=4679,freq=2.0), product of:
              0.1764681 = queryWeight, product of:
                2.4934804 = boost
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.017544081 = queryNorm
              0.35655344 = fieldWeight in 4679, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.036993004 = weight(abstract_txt:knowledge in 4679) [ClassicSimilarity], result of:
            0.036993004 = score(doc=4679,freq=1.0), product of:
              0.16426472 = queryWeight, product of:
                2.5984743 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.017544081 = queryNorm
              0.22520357 = fieldWeight in 4679, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.15294166 = weight(abstract_txt:search in 4679) [ClassicSimilarity], result of:
            0.15294166 = score(doc=4679,freq=12.0), product of:
              0.1932348 = queryWeight, product of:
                3.012901 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.017544081 = queryNorm
              0.7914809 = fieldWeight in 4679, product of:
                3.4641016 = tf(freq=12.0), with freq of:
                  12.0 = termFreq=12.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
          0.22207534 = weight(abstract_txt:behaviors in 4679) [ClassicSimilarity], result of:
            0.22207534 = score(doc=4679,freq=1.0), product of:
              0.5672774 = queryWeight, product of:
                5.162261 = boost
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.017544081 = queryNorm
              0.39147577 = fieldWeight in 4679, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.0625 = fieldNorm(doc=4679)
        0.44 = coord(11/25)
    
  4. Meadowbrooke, C.C.; Veinot, T.C.; Loveluck, J.; Hickok, A.; Bauermeister, J.A.: Information behavior and HIV testing intentions among young men at risk for HIV/AIDS (2014) 0.27
    0.27157652 = sum of:
      0.27157652 = product of:
        0.8486767 = sum of:
          0.0315493 = weight(abstract_txt:multiple in 3225) [ClassicSimilarity], result of:
            0.0315493 = score(doc=3225,freq=1.0), product of:
              0.09729751 = queryWeight, product of:
                1.068964 = boost
                5.188096 = idf(docFreq=641, maxDocs=42306)
                0.017544081 = queryNorm
              0.324256 = fieldWeight in 3225, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.188096 = idf(docFreq=641, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
          0.017166687 = weight(abstract_txt:analysis in 3225) [ClassicSimilarity], result of:
            0.017166687 = score(doc=3225,freq=1.0), product of:
              0.074232936 = queryWeight, product of:
                1.1435527 = boost
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.017544081 = queryNorm
              0.23125432 = fieldWeight in 3225, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7000692 = idf(docFreq=2842, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
          0.017191201 = weight(abstract_txt:were in 3225) [ClassicSimilarity], result of:
            0.017191201 = score(doc=3225,freq=1.0), product of:
              0.07430359 = queryWeight, product of:
                1.1440967 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.017544081 = queryNorm
              0.23136434 = fieldWeight in 3225, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
          0.12542224 = weight(abstract_txt:predictors in 3225) [ClassicSimilarity], result of:
            0.12542224 = score(doc=3225,freq=1.0), product of:
              0.24416961 = queryWeight, product of:
                1.6933941 = boost
                8.218697 = idf(docFreq=30, maxDocs=42306)
                0.017544081 = queryNorm
              0.51366854 = fieldWeight in 3225, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.218697 = idf(docFreq=30, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
          0.11964494 = weight(abstract_txt:regression in 3225) [ClassicSimilarity], result of:
            0.11964494 = score(doc=3225,freq=1.0), product of:
              0.27085397 = queryWeight, product of:
                2.1843662 = boost
                7.0677166 = idf(docFreq=97, maxDocs=42306)
                0.017544081 = queryNorm
              0.4417323 = fieldWeight in 3225, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0677166 = idf(docFreq=97, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
          0.08898275 = weight(abstract_txt:model in 3225) [ClassicSimilarity], result of:
            0.08898275 = score(doc=3225,freq=4.0), product of:
              0.1764681 = queryWeight, product of:
                2.4934804 = boost
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.017544081 = queryNorm
              0.5042427 = fieldWeight in 3225, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.0339417 = idf(docFreq=2035, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
          0.064073764 = weight(abstract_txt:knowledge in 3225) [ClassicSimilarity], result of:
            0.064073764 = score(doc=3225,freq=3.0), product of:
              0.16426472 = queryWeight, product of:
                2.5984743 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.017544081 = queryNorm
              0.39006403 = fieldWeight in 3225, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
          0.38464576 = weight(abstract_txt:behaviors in 3225) [ClassicSimilarity], result of:
            0.38464576 = score(doc=3225,freq=3.0), product of:
              0.5672774 = queryWeight, product of:
                5.162261 = boost
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.017544081 = queryNorm
              0.6780559 = fieldWeight in 3225, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.0625 = fieldNorm(doc=3225)
        0.32 = coord(8/25)
    
  5. Liu, J.; Belkin, N.J.: 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 (2015) 0.25
    0.25454113 = sum of:
      0.25454113 = product of:
        0.63635284 = sum of:
          0.06120838 = weight(abstract_txt:task in 3609) [ClassicSimilarity], result of:
            0.06120838 = score(doc=3609,freq=5.0), product of:
              0.08851003 = queryWeight, product of:
                1.0195498 = boost
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.017544081 = queryNorm
              0.69154173 = fieldWeight in 3609, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                4.94827 = idf(docFreq=815, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.014365482 = weight(abstract_txt:using in 3609) [ClassicSimilarity], result of:
            0.014365482 = score(doc=3609,freq=1.0), product of:
              0.06592029 = queryWeight, product of:
                1.0776244 = boost
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.017544081 = queryNorm
              0.217922 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.486752 = idf(docFreq=3518, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.016872898 = weight(abstract_txt:user in 3609) [ClassicSimilarity], result of:
            0.016872898 = score(doc=3609,freq=1.0), product of:
              0.07338356 = queryWeight, product of:
                1.1369916 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.017544081 = queryNorm
              0.2299275 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.017191201 = weight(abstract_txt:were in 3609) [ClassicSimilarity], result of:
            0.017191201 = score(doc=3609,freq=1.0), product of:
              0.07430359 = queryWeight, product of:
                1.1440967 = boost
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.017544081 = queryNorm
              0.23136434 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.7018294 = idf(docFreq=2837, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.024124386 = weight(abstract_txt:each in 3609) [ClassicSimilarity], result of:
            0.024124386 = score(doc=3609,freq=1.0), product of:
              0.093134336 = queryWeight, product of:
                1.2808927 = boost
                4.1444454 = idf(docFreq=1822, maxDocs=42306)
                0.017544081 = queryNorm
              0.25902784 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1444454 = idf(docFreq=1822, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.046294343 = weight(abstract_txt:users in 3609) [ClassicSimilarity], result of:
            0.046294343 = score(doc=3609,freq=5.0), product of:
              0.09257219 = queryWeight, product of:
                1.4745771 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.017544081 = queryNorm
              0.5000891 = fieldWeight in 3609, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.045767717 = weight(abstract_txt:topics in 3609) [ClassicSimilarity], result of:
            0.045767717 = score(doc=3609,freq=1.0), product of:
              0.14272887 = queryWeight, product of:
                1.5856736 = boost
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.017544081 = queryNorm
              0.32066196 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.1305914 = idf(docFreq=679, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.052316006 = weight(abstract_txt:knowledge in 3609) [ClassicSimilarity], result of:
            0.052316006 = score(doc=3609,freq=2.0), product of:
              0.16426472 = queryWeight, product of:
                2.5984743 = boost
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.017544081 = queryNorm
              0.31848595 = fieldWeight in 3609, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6032572 = idf(docFreq=3131, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.044150453 = weight(abstract_txt:search in 3609) [ClassicSimilarity], result of:
            0.044150453 = score(doc=3609,freq=1.0), product of:
              0.1932348 = queryWeight, product of:
                3.012901 = boost
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.017544081 = queryNorm
              0.22848086 = fieldWeight in 3609, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6556938 = idf(docFreq=2971, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
          0.31406197 = weight(abstract_txt:behaviors in 3609) [ClassicSimilarity], result of:
            0.31406197 = score(doc=3609,freq=2.0), product of:
              0.5672774 = queryWeight, product of:
                5.162261 = boost
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.017544081 = queryNorm
              0.55363035 = fieldWeight in 3609, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.2636123 = idf(docFreq=218, maxDocs=42306)
                0.0625 = fieldNorm(doc=3609)
        0.4 = coord(10/25)