Document (#12936)

Author
Hersh, W.R.
Pentecost, J.
Hickam, D.H.
Title
¬A task-oriented approach to retrieval system evaluation
Source
Forging new partnerships in information: converging technologies. Proceedings of the 58th Annual Meeting of the American Society for Information Science, ASIS'95, Chicago, IL, 9-12 October 1995. Ed.: T. Kinney
Imprint
Medford, NJ : Learned Information
Year
1995
Pages
S.112-117
Abstract
There is a need for improved methods to evaluate the effectiveness of end user information retrieval systems. Performs a task oriented assessment of 2 MEDLINE searching systems, one which promotes Boolean searching on human indexed thesaurus terms and the other natural language searching on words in the title, abstract, and indexing terms. Each was used by medical students to answer clinical questions. Students were able to use each system successfully, with no significant differences in questions correctly answered, time taken, relevant articles retrieved, or user satisfaction between the systems. This approach to evaluation was successful in measuring effectiveness of system use and demonstrates that both types of systems can be used equally well with minimal training
Theme
Retrievalstudien

Similar documents (author)

  1. Hersh, W.: Relevance and retrieval evaluation : perspectives from medicine (1994) 5.87
    5.874302 = sum of:
      5.874302 = weight(author_txt:hersh in 6931) [ClassicSimilarity], result of:
        5.874302 = fieldWeight in 6931, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.625 = fieldNorm(doc=6931)
    
  2. Hersh, R.: Reply to Martin Gardner (2001) 5.87
    5.874302 = sum of:
      5.874302 = weight(author_txt:hersh in 4571) [ClassicSimilarity], result of:
        5.874302 = fieldWeight in 4571, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.625 = fieldNorm(doc=4571)
    
  3. Hersh, W.R.; Hickam, D.H.: ¬A comparison of two methods for indexing and retrieval from a full-text medical database (1992) 4.70
    4.6994414 = sum of:
      4.6994414 = weight(author_txt:hersh in 4525) [ClassicSimilarity], result of:
        4.6994414 = fieldWeight in 4525, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.5 = fieldNorm(doc=4525)
    
  4. Hersh, W.R.; Over, P.: Interactivity at the Text Retrieval Conference (TREC) (2001) 4.70
    4.6994414 = sum of:
      4.6994414 = weight(author_txt:hersh in 5485) [ClassicSimilarity], result of:
        4.6994414 = fieldWeight in 5485, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.5 = fieldNorm(doc=5485)
    
  5. Hersh, W.R.; Hickam, D.H.: ¬An evaluation of interactive Boolean and natural language searching with an online medical textbook (1995) 4.70
    4.6994414 = sum of:
      4.6994414 = weight(author_txt:hersh in 2719) [ClassicSimilarity], result of:
        4.6994414 = fieldWeight in 2719, product of:
          1.0 = tf(freq=1.0), with freq of:
            1.0 = termFreq=1.0
          9.398883 = idf(docFreq=9, maxDocs=44421)
          0.5 = fieldNorm(doc=2719)
    

Similar documents (content)

  1. Hersh, W.; Pentecost, J.; Hickam, D.: ¬A task-oriented approach to information retrieval evaluation : overview and design for empirical testing (1996) 2.25
    2.2528775 = sum of:
      2.2528775 = product of:
        2.3467474 = sum of:
          0.09613909 = weight(abstract_txt:measuring in 3069) [ClassicSimilarity], result of:
            0.09613909 = score(doc=3069,freq=1.0), product of:
              0.1869196 = queryWeight, product of:
                6.5834737 = idf(docFreq=166, maxDocs=44421)
                0.028392246 = queryNorm
              0.5143339 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.5834737 = idf(docFreq=166, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.10061915 = weight(abstract_txt:successfully in 3069) [ClassicSimilarity], result of:
            0.10061915 = score(doc=3069,freq=1.0), product of:
              0.19268236 = queryWeight, product of:
                1.015298 = boost
                6.684188 = idf(docFreq=150, maxDocs=44421)
                0.028392246 = queryNorm
              0.5222022 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.684188 = idf(docFreq=150, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.025497431 = weight(abstract_txt:used in 3069) [ClassicSimilarity], result of:
            0.025497431 = score(doc=3069,freq=1.0), product of:
              0.09721407 = queryWeight, product of:
                1.0198872 = boost
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.028392246 = queryNorm
              0.26228127 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.106110014 = weight(abstract_txt:medline in 3069) [ClassicSimilarity], result of:
            0.106110014 = score(doc=3069,freq=1.0), product of:
              0.19962999 = queryWeight, product of:
                1.0334405 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.028392246 = queryNorm
              0.5315334 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.028313357 = weight(abstract_txt:retrieval in 3069) [ClassicSimilarity], result of:
            0.028313357 = score(doc=3069,freq=1.0), product of:
              0.10424593 = queryWeight, product of:
                1.0561293 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.028392246 = queryNorm
              0.27160156 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.1174594 = weight(abstract_txt:minimal in 3069) [ClassicSimilarity], result of:
            0.1174594 = score(doc=3069,freq=1.0), product of:
              0.21362236 = queryWeight, product of:
                1.0690448 = boost
                7.0380287 = idf(docFreq=105, maxDocs=44421)
                0.028392246 = queryNorm
              0.549846 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.0380287 = idf(docFreq=105, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.12469521 = weight(abstract_txt:equally in 3069) [ClassicSimilarity], result of:
            0.12469521 = score(doc=3069,freq=1.0), product of:
              0.2223078 = queryWeight, product of:
                1.0905609 = boost
                7.179679 = idf(docFreq=91, maxDocs=44421)
                0.028392246 = queryNorm
              0.56091243 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.179679 = idf(docFreq=91, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.12886414 = weight(abstract_txt:clinical in 3069) [ClassicSimilarity], result of:
            0.12886414 = score(doc=3069,freq=1.0), product of:
              0.22723553 = queryWeight, product of:
                1.1025815 = boost
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.028392246 = queryNorm
              0.56709504 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.0336059 = weight(abstract_txt:user in 3069) [ClassicSimilarity], result of:
            0.0336059 = score(doc=3069,freq=1.0), product of:
              0.116862506 = queryWeight, product of:
                1.1182146 = boost
                3.6808684 = idf(docFreq=3042, maxDocs=44421)
                0.028392246 = queryNorm
              0.28756785 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6808684 = idf(docFreq=3042, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.03528401 = weight(abstract_txt:approach in 3069) [ClassicSimilarity], result of:
            0.03528401 = score(doc=3069,freq=1.0), product of:
              0.12072118 = queryWeight, product of:
                1.1365259 = boost
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.028392246 = queryNorm
              0.29227686 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.14548317 = weight(abstract_txt:answered in 3069) [ClassicSimilarity], result of:
            0.14548317 = score(doc=3069,freq=1.0), product of:
              0.24637504 = queryWeight, product of:
                1.1480768 = boost
                7.558333 = idf(docFreq=62, maxDocs=44421)
                0.028392246 = queryNorm
              0.59049475 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.558333 = idf(docFreq=62, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.15456723 = weight(abstract_txt:correctly in 3069) [ClassicSimilarity], result of:
            0.15456723 = score(doc=3069,freq=1.0), product of:
              0.25652704 = queryWeight, product of:
                1.1714915 = boost
                7.7124834 = idf(docFreq=53, maxDocs=44421)
                0.028392246 = queryNorm
              0.60253775 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7124834 = idf(docFreq=53, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.17017487 = weight(abstract_txt:promotes in 3069) [ClassicSimilarity], result of:
            0.17017487 = score(doc=3069,freq=1.0), product of:
              0.27351752 = queryWeight, product of:
                1.2096651 = boost
                7.963798 = idf(docFreq=41, maxDocs=44421)
                0.028392246 = queryNorm
              0.6221717 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.963798 = idf(docFreq=41, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.06301157 = weight(abstract_txt:terms in 3069) [ClassicSimilarity], result of:
            0.06301157 = score(doc=3069,freq=2.0), product of:
              0.14103766 = queryWeight, product of:
                1.2284433 = boost
                4.043712 = idf(docFreq=2116, maxDocs=44421)
                0.028392246 = queryNorm
              0.44677126 = fieldWeight in 3069, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.043712 = idf(docFreq=2116, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.047047056 = weight(abstract_txt:each in 3069) [ClassicSimilarity], result of:
            0.047047056 = score(doc=3069,freq=1.0), product of:
              0.14624684 = queryWeight, product of:
                1.2509236 = boost
                4.1177115 = idf(docFreq=1965, maxDocs=44421)
                0.028392246 = queryNorm
              0.32169622 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.1177115 = idf(docFreq=1965, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.06057475 = weight(abstract_txt:evaluation in 3069) [ClassicSimilarity], result of:
            0.06057475 = score(doc=3069,freq=1.0), product of:
              0.17308494 = queryWeight, product of:
                1.3608718 = boost
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.028392246 = queryNorm
              0.34997123 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.11092209 = weight(abstract_txt:questions in 3069) [ClassicSimilarity], result of:
            0.11092209 = score(doc=3069,freq=2.0), product of:
              0.20562074 = queryWeight, product of:
                1.4832728 = boost
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.028392246 = queryNorm
              0.53944993 = fieldWeight in 3069, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.07955802 = weight(abstract_txt:task in 3069) [ClassicSimilarity], result of:
            0.07955802 = score(doc=3069,freq=1.0), product of:
              0.20758095 = queryWeight, product of:
                1.4903262 = boost
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.028392246 = queryNorm
              0.38326263 = fieldWeight in 3069, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.114796214 = weight(abstract_txt:students in 3069) [ClassicSimilarity], result of:
            0.114796214 = score(doc=3069,freq=2.0), product of:
              0.21038103 = queryWeight, product of:
                1.500344 = boost
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.028392246 = queryNorm
              0.5456586 = fieldWeight in 3069, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.067170516 = weight(abstract_txt:system in 3069) [ClassicSimilarity], result of:
            0.067170516 = score(doc=3069,freq=3.0), product of:
              0.14717723 = queryWeight, product of:
                1.536928 = boost
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.028392246 = queryNorm
              0.45639202 = fieldWeight in 3069, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.12612791 = weight(abstract_txt:effectiveness in 3069) [ClassicSimilarity], result of:
            0.12612791 = score(doc=3069,freq=2.0), product of:
              0.2240074 = queryWeight, product of:
                1.5481703 = boost
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.028392246 = queryNorm
              0.5630525 = fieldWeight in 3069, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.16587043 = weight(abstract_txt:oriented in 3069) [ClassicSimilarity], result of:
            0.16587043 = score(doc=3069,freq=2.0), product of:
              0.26888558 = queryWeight, product of:
                1.6961776 = boost
                5.58337 = idf(docFreq=453, maxDocs=44421)
                0.028392246 = queryNorm
              0.6168811 = fieldWeight in 3069, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.58337 = idf(docFreq=453, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.13786753 = weight(abstract_txt:searching in 3069) [ClassicSimilarity], result of:
            0.13786753 = score(doc=3069,freq=3.0), product of:
              0.23770018 = queryWeight, product of:
                1.9532056 = boost
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.028392246 = queryNorm
              0.580006 = fieldWeight in 3069, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
          0.106988385 = weight(abstract_txt:systems in 3069) [ClassicSimilarity], result of:
            0.106988385 = score(doc=3069,freq=4.0), product of:
              0.20073014 = queryWeight, product of:
                2.0725684 = boost
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.028392246 = queryNorm
              0.5329961 = fieldWeight in 3069, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.078125 = fieldNorm(doc=3069)
        0.96 = coord(24/25)
    
  2. Vegt, A. van der; Zuccon, G.; Koopman, B.: Do better search engines really equate to better clinical decisions? : If not, why not? (2021) 0.42
    0.4228017 = sum of:
      0.4228017 = product of:
        0.96091294 = sum of:
          0.028847048 = weight(abstract_txt:used in 1151) [ClassicSimilarity], result of:
            0.028847048 = score(doc=1151,freq=2.0), product of:
              0.09721407 = queryWeight, product of:
                1.0198872 = boost
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.028392246 = queryNorm
              0.29673737 = fieldWeight in 1151, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.022650687 = weight(abstract_txt:retrieval in 1151) [ClassicSimilarity], result of:
            0.022650687 = score(doc=1151,freq=1.0), product of:
              0.10424593 = queryWeight, product of:
                1.0561293 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.028392246 = queryNorm
              0.21728125 = fieldWeight in 1151, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.17855938 = weight(abstract_txt:clinical in 1151) [ClassicSimilarity], result of:
            0.17855938 = score(doc=1151,freq=3.0), product of:
              0.22723553 = queryWeight, product of:
                1.1025815 = boost
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.028392246 = queryNorm
              0.7857899 = fieldWeight in 1151, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.2588162 = idf(docFreq=84, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.02688472 = weight(abstract_txt:user in 1151) [ClassicSimilarity], result of:
            0.02688472 = score(doc=1151,freq=1.0), product of:
              0.116862506 = queryWeight, product of:
                1.1182146 = boost
                3.6808684 = idf(docFreq=3042, maxDocs=44421)
                0.028392246 = queryNorm
              0.23005427 = fieldWeight in 1151, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6808684 = idf(docFreq=3042, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.028227208 = weight(abstract_txt:approach in 1151) [ClassicSimilarity], result of:
            0.028227208 = score(doc=1151,freq=1.0), product of:
              0.12072118 = queryWeight, product of:
                1.1365259 = boost
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.028392246 = queryNorm
              0.2338215 = fieldWeight in 1151, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.16459541 = weight(abstract_txt:answered in 1151) [ClassicSimilarity], result of:
            0.16459541 = score(doc=1151,freq=2.0), product of:
              0.24637504 = queryWeight, product of:
                1.1480768 = boost
                7.558333 = idf(docFreq=62, maxDocs=44421)
                0.028392246 = queryNorm
              0.6680685 = fieldWeight in 1151, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.558333 = idf(docFreq=62, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.123653784 = weight(abstract_txt:correctly in 1151) [ClassicSimilarity], result of:
            0.123653784 = score(doc=1151,freq=1.0), product of:
              0.25652704 = queryWeight, product of:
                1.1714915 = boost
                7.7124834 = idf(docFreq=53, maxDocs=44421)
                0.028392246 = queryNorm
              0.4820302 = fieldWeight in 1151, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.7124834 = idf(docFreq=53, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.088737674 = weight(abstract_txt:questions in 1151) [ClassicSimilarity], result of:
            0.088737674 = score(doc=1151,freq=2.0), product of:
              0.20562074 = queryWeight, product of:
                1.4832728 = boost
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.028392246 = queryNorm
              0.43155995 = fieldWeight in 1151, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.11023883 = weight(abstract_txt:task in 1151) [ClassicSimilarity], result of:
            0.11023883 = score(doc=1151,freq=3.0), product of:
              0.20758095 = queryWeight, product of:
                1.4903262 = boost
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.028392246 = queryNorm
              0.5310643 = fieldWeight in 1151, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.064938545 = weight(abstract_txt:students in 1151) [ClassicSimilarity], result of:
            0.064938545 = score(doc=1151,freq=1.0), product of:
              0.21038103 = queryWeight, product of:
                1.500344 = boost
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.028392246 = queryNorm
              0.30867112 = fieldWeight in 1151, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
          0.12357962 = weight(abstract_txt:effectiveness in 1151) [ClassicSimilarity], result of:
            0.12357962 = score(doc=1151,freq=3.0), product of:
              0.2240074 = queryWeight, product of:
                1.5481703 = boost
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.028392246 = queryNorm
              0.5516765 = fieldWeight in 1151, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.0625 = fieldNorm(doc=1151)
        0.44 = coord(11/25)
    
  3. White, R.W.; Jose, J.M.; Ruthven, I.: ¬A task-oriented study on the influencing effects of query-biased summarisation in web searching (2003) 0.32
    0.32090685 = sum of:
      0.32090685 = product of:
        0.668556 = sum of:
          0.020397944 = weight(abstract_txt:used in 2081) [ClassicSimilarity], result of:
            0.020397944 = score(doc=2081,freq=1.0), product of:
              0.09721407 = queryWeight, product of:
                1.0198872 = boost
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.028392246 = queryNorm
              0.20982501 = fieldWeight in 2081, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.032032907 = weight(abstract_txt:retrieval in 2081) [ClassicSimilarity], result of:
            0.032032907 = score(doc=2081,freq=2.0), product of:
              0.10424593 = queryWeight, product of:
                1.0561293 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.028392246 = queryNorm
              0.3072821 = fieldWeight in 2081, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.02688472 = weight(abstract_txt:user in 2081) [ClassicSimilarity], result of:
            0.02688472 = score(doc=2081,freq=1.0), product of:
              0.116862506 = queryWeight, product of:
                1.1182146 = boost
                3.6808684 = idf(docFreq=3042, maxDocs=44421)
                0.028392246 = queryNorm
              0.23005427 = fieldWeight in 2081, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6808684 = idf(docFreq=3042, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.048890956 = weight(abstract_txt:approach in 2081) [ClassicSimilarity], result of:
            0.048890956 = score(doc=2081,freq=3.0), product of:
              0.12072118 = queryWeight, product of:
                1.1365259 = boost
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.028392246 = queryNorm
              0.4049907 = fieldWeight in 2081, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.053227663 = weight(abstract_txt:each in 2081) [ClassicSimilarity], result of:
            0.053227663 = score(doc=2081,freq=2.0), product of:
              0.14624684 = queryWeight, product of:
                1.2509236 = boost
                4.1177115 = idf(docFreq=1965, maxDocs=44421)
                0.028392246 = queryNorm
              0.3639577 = fieldWeight in 2081, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.1177115 = idf(docFreq=1965, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.068532504 = weight(abstract_txt:evaluation in 2081) [ClassicSimilarity], result of:
            0.068532504 = score(doc=2081,freq=2.0), product of:
              0.17308494 = queryWeight, product of:
                1.3608718 = boost
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.028392246 = queryNorm
              0.39594725 = fieldWeight in 2081, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.06364642 = weight(abstract_txt:task in 2081) [ClassicSimilarity], result of:
            0.06364642 = score(doc=2081,freq=1.0), product of:
              0.20758095 = queryWeight, product of:
                1.4903262 = boost
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.028392246 = queryNorm
              0.3066101 = fieldWeight in 2081, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.05373641 = weight(abstract_txt:system in 2081) [ClassicSimilarity], result of:
            0.05373641 = score(doc=2081,freq=3.0), product of:
              0.14717723 = queryWeight, product of:
                1.536928 = boost
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.028392246 = queryNorm
              0.36511362 = fieldWeight in 2081, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.100902334 = weight(abstract_txt:effectiveness in 2081) [ClassicSimilarity], result of:
            0.100902334 = score(doc=2081,freq=2.0), product of:
              0.2240074 = queryWeight, product of:
                1.5481703 = boost
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.028392246 = queryNorm
              0.450442 = fieldWeight in 2081, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.09383048 = weight(abstract_txt:oriented in 2081) [ClassicSimilarity], result of:
            0.09383048 = score(doc=2081,freq=1.0), product of:
              0.26888558 = queryWeight, product of:
                1.6961776 = boost
                5.58337 = idf(docFreq=453, maxDocs=44421)
                0.028392246 = queryNorm
              0.34896064 = fieldWeight in 2081, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.58337 = idf(docFreq=453, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.06367828 = weight(abstract_txt:searching in 2081) [ClassicSimilarity], result of:
            0.06367828 = score(doc=2081,freq=1.0), product of:
              0.23770018 = queryWeight, product of:
                1.9532056 = boost
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.028392246 = queryNorm
              0.26789328 = fieldWeight in 2081, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
          0.042795353 = weight(abstract_txt:systems in 2081) [ClassicSimilarity], result of:
            0.042795353 = score(doc=2081,freq=1.0), product of:
              0.20073014 = queryWeight, product of:
                2.0725684 = boost
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.028392246 = queryNorm
              0.21319844 = fieldWeight in 2081, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.0625 = fieldNorm(doc=2081)
        0.48 = coord(12/25)
    
  4. Vakkari, P.; Huuskonen, S.: Search effort degrades search output but improves task outcome (2012) 0.27
    0.27406076 = sum of:
      0.27406076 = product of:
        0.7612798 = sum of:
          0.12004978 = weight(abstract_txt:medline in 1046) [ClassicSimilarity], result of:
            0.12004978 = score(doc=1046,freq=2.0), product of:
              0.19962999 = queryWeight, product of:
                1.0334405 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.028392246 = queryNorm
              0.60136145 = fieldWeight in 1046, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.032032907 = weight(abstract_txt:retrieval in 1046) [ClassicSimilarity], result of:
            0.032032907 = score(doc=1046,freq=2.0), product of:
              0.10424593 = queryWeight, product of:
                1.0561293 = boost
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.028392246 = queryNorm
              0.3072821 = fieldWeight in 1046, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4765 = idf(docFreq=3732, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.035644732 = weight(abstract_txt:terms in 1046) [ClassicSimilarity], result of:
            0.035644732 = score(doc=1046,freq=1.0), product of:
              0.14103766 = queryWeight, product of:
                1.2284433 = boost
                4.043712 = idf(docFreq=2116, maxDocs=44421)
                0.028392246 = queryNorm
              0.252732 = fieldWeight in 1046, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.043712 = idf(docFreq=2116, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.068532504 = weight(abstract_txt:evaluation in 1046) [ClassicSimilarity], result of:
            0.068532504 = score(doc=1046,freq=2.0), product of:
              0.17308494 = queryWeight, product of:
                1.3608718 = boost
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.028392246 = queryNorm
              0.39594725 = fieldWeight in 1046, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.06274701 = weight(abstract_txt:questions in 1046) [ClassicSimilarity], result of:
            0.06274701 = score(doc=1046,freq=1.0), product of:
              0.20562074 = queryWeight, product of:
                1.4832728 = boost
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.028392246 = queryNorm
              0.30515897 = fieldWeight in 1046, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.1683926 = weight(abstract_txt:task in 1046) [ClassicSimilarity], result of:
            0.1683926 = score(doc=1046,freq=7.0), product of:
              0.20758095 = queryWeight, product of:
                1.4903262 = boost
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.028392246 = queryNorm
              0.8112141 = fieldWeight in 1046, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.11247686 = weight(abstract_txt:students in 1046) [ClassicSimilarity], result of:
            0.11247686 = score(doc=1046,freq=3.0), product of:
              0.21038103 = queryWeight, product of:
                1.500344 = boost
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.028392246 = queryNorm
              0.53463405 = fieldWeight in 1046, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.07134873 = weight(abstract_txt:effectiveness in 1046) [ClassicSimilarity], result of:
            0.07134873 = score(doc=1046,freq=1.0), product of:
              0.2240074 = queryWeight, product of:
                1.5481703 = boost
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.028392246 = queryNorm
              0.3185106 = fieldWeight in 1046, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0961695 = idf(docFreq=738, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
          0.09005468 = weight(abstract_txt:searching in 1046) [ClassicSimilarity], result of:
            0.09005468 = score(doc=1046,freq=2.0), product of:
              0.23770018 = queryWeight, product of:
                1.9532056 = boost
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.028392246 = queryNorm
              0.3788583 = fieldWeight in 1046, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.0625 = fieldNorm(doc=1046)
        0.36 = coord(9/25)
    
  5. Huuskonen, S.; Vakkari, P.: Students' search process and outcome in Medline in writing an essay for a class on evidence-based medicine (2008) 0.27
    0.27200916 = sum of:
      0.27200916 = product of:
        0.6800229 = sum of:
          0.017848201 = weight(abstract_txt:used in 2891) [ClassicSimilarity], result of:
            0.017848201 = score(doc=2891,freq=1.0), product of:
              0.09721407 = queryWeight, product of:
                1.0198872 = boost
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.028392246 = queryNorm
              0.18359688 = fieldWeight in 2891, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3572001 = idf(docFreq=4205, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.12865156 = weight(abstract_txt:medline in 2891) [ClassicSimilarity], result of:
            0.12865156 = score(doc=2891,freq=3.0), product of:
              0.19962999 = queryWeight, product of:
                1.0334405 = boost
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.028392246 = queryNorm
              0.64445007 = fieldWeight in 2891, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.803628 = idf(docFreq=133, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.024698807 = weight(abstract_txt:approach in 2891) [ClassicSimilarity], result of:
            0.024698807 = score(doc=2891,freq=1.0), product of:
              0.12072118 = queryWeight, product of:
                1.1365259 = boost
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.028392246 = queryNorm
              0.20459381 = fieldWeight in 2891, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.741144 = idf(docFreq=2864, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.059965946 = weight(abstract_txt:evaluation in 2891) [ClassicSimilarity], result of:
            0.059965946 = score(doc=2891,freq=2.0), product of:
              0.17308494 = queryWeight, product of:
                1.3608718 = boost
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.028392246 = queryNorm
              0.34645385 = fieldWeight in 2891, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.479632 = idf(docFreq=1368, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.054903634 = weight(abstract_txt:questions in 2891) [ClassicSimilarity], result of:
            0.054903634 = score(doc=2891,freq=1.0), product of:
              0.20562074 = queryWeight, product of:
                1.4832728 = boost
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.028392246 = queryNorm
              0.2670141 = fieldWeight in 2891, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8825436 = idf(docFreq=914, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.11138123 = weight(abstract_txt:task in 2891) [ClassicSimilarity], result of:
            0.11138123 = score(doc=2891,freq=4.0), product of:
              0.20758095 = queryWeight, product of:
                1.4903262 = boost
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.028392246 = queryNorm
              0.5365677 = fieldWeight in 2891, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.9057617 = idf(docFreq=893, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.13918303 = weight(abstract_txt:students in 2891) [ClassicSimilarity], result of:
            0.13918303 = score(doc=2891,freq=6.0), product of:
              0.21038103 = queryWeight, product of:
                1.500344 = boost
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.028392246 = queryNorm
              0.6615759 = fieldWeight in 2891, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                4.938738 = idf(docFreq=864, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.02714664 = weight(abstract_txt:system in 2891) [ClassicSimilarity], result of:
            0.02714664 = score(doc=2891,freq=1.0), product of:
              0.14717723 = queryWeight, product of:
                1.536928 = boost
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.028392246 = queryNorm
              0.18444863 = fieldWeight in 2891, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.372775 = idf(docFreq=4140, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.07879785 = weight(abstract_txt:searching in 2891) [ClassicSimilarity], result of:
            0.07879785 = score(doc=2891,freq=2.0), product of:
              0.23770018 = queryWeight, product of:
                1.9532056 = boost
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.028392246 = queryNorm
              0.331501 = fieldWeight in 2891, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.2862926 = idf(docFreq=1660, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
          0.037445936 = weight(abstract_txt:systems in 2891) [ClassicSimilarity], result of:
            0.037445936 = score(doc=2891,freq=1.0), product of:
              0.20073014 = queryWeight, product of:
                2.0725684 = boost
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.028392246 = queryNorm
              0.18654864 = fieldWeight in 2891, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.411175 = idf(docFreq=3984, maxDocs=44421)
                0.0546875 = fieldNorm(doc=2891)
        0.4 = coord(10/25)