Document (#34096)

Author
Díaz, A.
García, A.
Gervás, P.
Title
User-centred versus system-centred evaluation of a personalization system
Source
Information processing and management. 44(2008) no.3, S.1293-1307
Year
2008
Abstract
Some of the most popular measures to evaluate information filtering systems are usually independent of the users because they are based in relevance judgments obtained from experts. On the other hand, the user-centred evaluation allows showing the different impressions that the users have perceived about the system running. This work is focused on discussing the problem of user-centred versus system-centred evaluation of a Web content personalization system where the personalization is based on a user model that stores long term (section, categories and keywords) and short term interests (adapted from user provided feedback). The user-centred evaluation is based on questionnaires filled in by the users before and after using the system and the system-centred evaluation is based on the comparison between ranking of documents, obtained from the application of a multi-tier selection process, and binary relevance judgments collected previously from real users. The user-centred and system-centred evaluations performed with 106 users during 14 working days have provided valuable data concerning the behaviour of the users with respect to issues such as document relevance or the relative importance attributed to different ways of personalization. The results obtained shows general satisfaction on both the personalization processes (selection, adaptation and presentation) and the system as a whole.
Theme
Retrievalstudien

Similar documents (author)

  1. Díaz, P.: Usability of hypermedia educational e-books (2003) 2.01
    2.0146167 = sum of:
      2.0146167 = product of:
        4.0292335 = sum of:
          4.0292335 = weight(author_txt:díaz in 3199) [ClassicSimilarity], result of:
            4.0292335 = score(doc=3199,freq=1.0), product of:
              0.74891406 = queryWeight, product of:
                1.0630857 = boost
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.08183768 = queryNorm
              5.380101 = fieldWeight in 3199, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.625 = fieldNorm(doc=3199)
        0.5 = coord(1/2)
    
  2. Díaz, J.P. -> Pino-Díaz, J.: 1.99
    1.9943688 = sum of:
      1.9943688 = product of:
        3.9887376 = sum of:
          3.9887376 = weight(author_txt:díaz in 2053) [ClassicSimilarity], result of:
            3.9887376 = score(doc=2053,freq=2.0), product of:
              0.74891406 = queryWeight, product of:
                1.0630857 = boost
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.08183768 = queryNorm
              5.3260283 = fieldWeight in 2053, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.4375 = fieldNorm(doc=2053)
        0.5 = coord(1/2)
    
  3. Esteban, A. Díaz -> Díaz Esteban, A.: 1.71
    1.7094591 = sum of:
      1.7094591 = product of:
        3.4189181 = sum of:
          3.4189181 = weight(author_txt:díaz in 3748) [ClassicSimilarity], result of:
            3.4189181 = score(doc=3748,freq=2.0), product of:
              0.74891406 = queryWeight, product of:
                1.0630857 = boost
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.08183768 = queryNorm
              4.5651674 = fieldWeight in 3748, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.375 = fieldNorm(doc=3748)
        0.5 = coord(1/2)
    
  4. Díaz, N.P. Cruz -> Cruz Díaz, N.P.: 1.71
    1.7094591 = sum of:
      1.7094591 = product of:
        3.4189181 = sum of:
          3.4189181 = weight(author_txt:díaz in 2234) [ClassicSimilarity], result of:
            3.4189181 = score(doc=2234,freq=2.0), product of:
              0.74891406 = queryWeight, product of:
                1.0630857 = boost
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.08183768 = queryNorm
              4.5651674 = fieldWeight in 2234, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.375 = fieldNorm(doc=2234)
        0.5 = coord(1/2)
    
  5. Ortuño, P.M. Díaz => Díaz Ortuño, P.M.: 1.71
    1.7094591 = sum of:
      1.7094591 = product of:
        3.4189181 = sum of:
          3.4189181 = weight(author_txt:díaz in 1675) [ClassicSimilarity], result of:
            3.4189181 = score(doc=1675,freq=2.0), product of:
              0.74891406 = queryWeight, product of:
                1.0630857 = boost
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.08183768 = queryNorm
              4.5651674 = fieldWeight in 1675, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                8.608162 = idf(docFreq=20, maxDocs=42306)
                0.375 = fieldNorm(doc=1675)
        0.5 = coord(1/2)
    

Similar documents (content)

  1. Díaz, A.; Gervás, P.: User-model based personalized summarization (2007) 0.38
    0.38323197 = sum of:
      0.38323197 = product of:
        1.0645332 = sum of:
          0.049704418 = weight(abstract_txt:stores in 2953) [ClassicSimilarity], result of:
            0.049704418 = score(doc=2953,freq=1.0), product of:
              0.09750533 = queryWeight, product of:
                1.1384872 = boost
                8.156177 = idf(docFreq=32, maxDocs=42306)
                0.0105005875 = queryNorm
              0.50976104 = fieldWeight in 2953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.156177 = idf(docFreq=32, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.020720974 = weight(abstract_txt:term in 2953) [ClassicSimilarity], result of:
            0.020720974 = score(doc=2953,freq=1.0), product of:
              0.06855647 = queryWeight, product of:
                1.3500603 = boost
                4.8359485 = idf(docFreq=912, maxDocs=42306)
                0.0105005875 = queryNorm
              0.30224678 = fieldWeight in 2953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.8359485 = idf(docFreq=912, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.057417825 = weight(abstract_txt:relevance in 2953) [ClassicSimilarity], result of:
            0.057417825 = score(doc=2953,freq=3.0), product of:
              0.107348554 = queryWeight, product of:
                2.0690582 = boost
                4.9409437 = idf(docFreq=821, maxDocs=42306)
                0.0105005875 = queryNorm
              0.53487283 = fieldWeight in 2953, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.9409437 = idf(docFreq=821, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.053240288 = weight(abstract_txt:obtained in 2953) [ClassicSimilarity], result of:
            0.053240288 = score(doc=2953,freq=1.0), product of:
              0.14721963 = queryWeight, product of:
                2.4230225 = boost
                5.7862163 = idf(docFreq=352, maxDocs=42306)
                0.0105005875 = queryNorm
              0.36163852 = fieldWeight in 2953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.7862163 = idf(docFreq=352, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.041555468 = weight(abstract_txt:evaluation in 2953) [ClassicSimilarity], result of:
            0.041555468 = score(doc=2953,freq=1.0), product of:
              0.14797005 = queryWeight, product of:
                3.136071 = boost
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.0105005875 = queryNorm
              0.28083703 = fieldWeight in 2953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.0844724 = weight(abstract_txt:user in 2953) [ClassicSimilarity], result of:
            0.0844724 = score(doc=2953,freq=7.0), product of:
              0.13885929 = queryWeight, product of:
                3.594599 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0105005875 = queryNorm
              0.60833097 = fieldWeight in 2953, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.03141201 = weight(abstract_txt:system in 2953) [ClassicSimilarity], result of:
            0.03141201 = score(doc=2953,freq=1.0), product of:
              0.149363 = queryWeight, product of:
                4.227238 = boost
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.0105005875 = queryNorm
              0.21030651 = fieldWeight in 2953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.3768541 = weight(abstract_txt:personalization in 2953) [ClassicSimilarity], result of:
            0.3768541 = score(doc=2953,freq=3.0), product of:
              0.44616634 = queryWeight, product of:
                5.4456205 = boost
                7.8025365 = idf(docFreq=46, maxDocs=42306)
                0.0105005875 = queryNorm
              0.8446493 = fieldWeight in 2953, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.8025365 = idf(docFreq=46, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
          0.34915584 = weight(abstract_txt:centred in 2953) [ClassicSimilarity], result of:
            0.34915584 = score(doc=2953,freq=1.0), product of:
              0.7439186 = queryWeight, product of:
                9.434045 = boost
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.0105005875 = queryNorm
              0.46934685 = fieldWeight in 2953, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.0625 = fieldNorm(doc=2953)
        0.36 = coord(9/25)
    
  2. Shiri, A.A.; Revie, C.; Chowdhury, G.: Thesaurus-assisted search term selection and query expansion : a review of user-centred studies (2002) 0.24
    0.23578002 = sum of:
      0.23578002 = product of:
        0.8420715 = sum of:
          0.0116410805 = weight(abstract_txt:different in 2331) [ClassicSimilarity], result of:
            0.0116410805 = score(doc=2331,freq=1.0), product of:
              0.040225107 = queryWeight, product of:
                1.0341358 = boost
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.0105005875 = queryNorm
              0.28939837 = fieldWeight in 2331, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.078125 = fieldNorm(doc=2331)
          0.036629852 = weight(abstract_txt:term in 2331) [ClassicSimilarity], result of:
            0.036629852 = score(doc=2331,freq=2.0), product of:
              0.06855647 = queryWeight, product of:
                1.3500603 = boost
                4.8359485 = idf(docFreq=912, maxDocs=42306)
                0.0105005875 = queryNorm
              0.5343019 = fieldWeight in 2331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.8359485 = idf(docFreq=912, maxDocs=42306)
                0.078125 = fieldNorm(doc=2331)
          0.061441235 = weight(abstract_txt:selection in 2331) [ClassicSimilarity], result of:
            0.061441235 = score(doc=2331,freq=3.0), product of:
              0.084547594 = queryWeight, product of:
                1.4992691 = boost
                5.3704176 = idf(docFreq=534, maxDocs=42306)
                0.0105005875 = queryNorm
              0.7267059 = fieldWeight in 2331, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.3704176 = idf(docFreq=534, maxDocs=42306)
                0.078125 = fieldNorm(doc=2331)
          0.014172314 = weight(abstract_txt:from in 2331) [ClassicSimilarity], result of:
            0.014172314 = score(doc=2331,freq=2.0), product of:
              0.045862973 = queryWeight, product of:
                1.5616189 = boost
                2.796878 = idf(docFreq=7014, maxDocs=42306)
                0.0105005875 = queryNorm
              0.3090143 = fieldWeight in 2331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.796878 = idf(docFreq=7014, maxDocs=42306)
                0.078125 = fieldNorm(doc=2331)
          0.04452035 = weight(abstract_txt:users in 2331) [ClassicSimilarity], result of:
            0.04452035 = score(doc=2331,freq=2.0), product of:
              0.11260849 = queryWeight, product of:
                2.99692 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0105005875 = queryNorm
              0.39535517 = fieldWeight in 2331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.078125 = fieldNorm(doc=2331)
          0.0564405 = weight(abstract_txt:user in 2331) [ClassicSimilarity], result of:
            0.0564405 = score(doc=2331,freq=2.0), product of:
              0.13885929 = queryWeight, product of:
                3.594599 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0105005875 = queryNorm
              0.40645823 = fieldWeight in 2331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.078125 = fieldNorm(doc=2331)
          0.6172261 = weight(abstract_txt:centred in 2331) [ClassicSimilarity], result of:
            0.6172261 = score(doc=2331,freq=2.0), product of:
              0.7439186 = queryWeight, product of:
                9.434045 = boost
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.0105005875 = queryNorm
              0.8296958 = fieldWeight in 2331, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.078125 = fieldNorm(doc=2331)
        0.28 = coord(7/25)
    
  3. Borlund, P.; Ruthven, I.: Introduction to the special issue on evaluating interactive information retrieval systems (2008) 0.22
    0.2249292 = sum of:
      0.2249292 = product of:
        0.6248033 = sum of:
          0.025262238 = weight(abstract_txt:questionnaires in 4020) [ClassicSimilarity], result of:
            0.025262238 = score(doc=4020,freq=1.0), product of:
              0.07522671 = queryWeight, product of:
                7.1640477 = idf(docFreq=88, maxDocs=42306)
                0.0105005875 = queryNorm
              0.33581474 = fieldWeight in 4020, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.1640477 = idf(docFreq=88, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.006984648 = weight(abstract_txt:different in 4020) [ClassicSimilarity], result of:
            0.006984648 = score(doc=4020,freq=1.0), product of:
              0.040225107 = queryWeight, product of:
                1.0341358 = boost
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.0105005875 = queryNorm
              0.17363901 = fieldWeight in 4020, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.704299 = idf(docFreq=2830, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.006012804 = weight(abstract_txt:from in 4020) [ClassicSimilarity], result of:
            0.006012804 = score(doc=4020,freq=1.0), product of:
              0.045862973 = queryWeight, product of:
                1.5616189 = boost
                2.796878 = idf(docFreq=7014, maxDocs=42306)
                0.0105005875 = queryNorm
              0.13110366 = fieldWeight in 4020, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.796878 = idf(docFreq=7014, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.00913427 = weight(abstract_txt:based in 4020) [ClassicSimilarity], result of:
            0.00913427 = score(doc=4020,freq=1.0), product of:
              0.060607553 = queryWeight, product of:
                1.7951772 = boost
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.0105005875 = queryNorm
              0.15071175 = fieldWeight in 4020, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.026712209 = weight(abstract_txt:users in 4020) [ClassicSimilarity], result of:
            0.026712209 = score(doc=4020,freq=2.0), product of:
              0.11260849 = queryWeight, product of:
                2.99692 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0105005875 = queryNorm
              0.23721309 = fieldWeight in 4020, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.0934998 = weight(abstract_txt:evaluation in 4020) [ClassicSimilarity], result of:
            0.0934998 = score(doc=4020,freq=9.0), product of:
              0.14797005 = queryWeight, product of:
                3.136071 = boost
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.0105005875 = queryNorm
              0.63188326 = fieldWeight in 4020, product of:
                3.0 = tf(freq=9.0), with freq of:
                  9.0 = termFreq=9.0
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.05354416 = weight(abstract_txt:user in 4020) [ClassicSimilarity], result of:
            0.05354416 = score(doc=4020,freq=5.0), product of:
              0.13885929 = queryWeight, product of:
                3.594599 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0105005875 = queryNorm
              0.38560015 = fieldWeight in 4020, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.03331747 = weight(abstract_txt:system in 4020) [ClassicSimilarity], result of:
            0.03331747 = score(doc=4020,freq=2.0), product of:
              0.149363 = queryWeight, product of:
                4.227238 = boost
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.0105005875 = queryNorm
              0.22306374 = fieldWeight in 4020, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
          0.3703357 = weight(abstract_txt:centred in 4020) [ClassicSimilarity], result of:
            0.3703357 = score(doc=4020,freq=2.0), product of:
              0.7439186 = queryWeight, product of:
                9.434045 = boost
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.0105005875 = queryNorm
              0.49781752 = fieldWeight in 4020, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.046875 = fieldNorm(doc=4020)
        0.36 = coord(9/25)
    
  4. Göker, A.; Myrhaug, H.: Evaluation of a mobile information system in context (2008) 0.20
    0.20397748 = sum of:
      0.20397748 = product of:
        0.728491 = sum of:
          0.0686936 = weight(abstract_txt:filled in 4023) [ClassicSimilarity], result of:
            0.0686936 = score(doc=4023,freq=1.0), product of:
              0.104256354 = queryWeight, product of:
                1.1772406 = boost
                8.433808 = idf(docFreq=24, maxDocs=42306)
                0.0105005875 = queryNorm
              0.65889126 = fieldWeight in 4023, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.433808 = idf(docFreq=24, maxDocs=42306)
                0.078125 = fieldNorm(doc=4023)
          0.010021339 = weight(abstract_txt:from in 4023) [ClassicSimilarity], result of:
            0.010021339 = score(doc=4023,freq=1.0), product of:
              0.045862973 = queryWeight, product of:
                1.5616189 = boost
                2.796878 = idf(docFreq=7014, maxDocs=42306)
                0.0105005875 = queryNorm
              0.2185061 = fieldWeight in 4023, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.796878 = idf(docFreq=7014, maxDocs=42306)
                0.078125 = fieldNorm(doc=4023)
          0.031480644 = weight(abstract_txt:users in 4023) [ClassicSimilarity], result of:
            0.031480644 = score(doc=4023,freq=1.0), product of:
              0.11260849 = queryWeight, product of:
                2.99692 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0105005875 = queryNorm
              0.27955833 = fieldWeight in 4023, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.078125 = fieldNorm(doc=4023)
          0.073460385 = weight(abstract_txt:evaluation in 4023) [ClassicSimilarity], result of:
            0.073460385 = score(doc=4023,freq=2.0), product of:
              0.14797005 = queryWeight, product of:
                3.136071 = boost
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.0105005875 = queryNorm
              0.49645442 = fieldWeight in 4023, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.4933925 = idf(docFreq=1285, maxDocs=42306)
                0.078125 = fieldNorm(doc=4023)
          0.06912521 = weight(abstract_txt:user in 4023) [ClassicSimilarity], result of:
            0.06912521 = score(doc=4023,freq=3.0), product of:
              0.13885929 = queryWeight, product of:
                3.594599 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0105005875 = queryNorm
              0.49780762 = fieldWeight in 4023, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.078125 = fieldNorm(doc=4023)
          0.03926501 = weight(abstract_txt:system in 4023) [ClassicSimilarity], result of:
            0.03926501 = score(doc=4023,freq=1.0), product of:
              0.149363 = queryWeight, product of:
                4.227238 = boost
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.0105005875 = queryNorm
              0.26288313 = fieldWeight in 4023, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.078125 = fieldNorm(doc=4023)
          0.43644482 = weight(abstract_txt:centred in 4023) [ClassicSimilarity], result of:
            0.43644482 = score(doc=4023,freq=1.0), product of:
              0.7439186 = queryWeight, product of:
                9.434045 = boost
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.0105005875 = queryNorm
              0.5866836 = fieldWeight in 4023, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.078125 = fieldNorm(doc=4023)
        0.28 = coord(7/25)
    
  5. Moulin, B.; Boulet, M.M.; Meyer, M.A.: Toward user-centre approaches for the design of knowledge-based systems (1992) 0.20
    0.19984262 = sum of:
      0.19984262 = product of:
        0.9992131 = sum of:
          0.026368365 = weight(abstract_txt:based in 5812) [ClassicSimilarity], result of:
            0.026368365 = score(doc=5812,freq=3.0), product of:
              0.060607553 = queryWeight, product of:
                1.7951772 = boost
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.0105005875 = queryNorm
              0.4350673 = fieldWeight in 5812, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.2151837 = idf(docFreq=4616, maxDocs=42306)
                0.078125 = fieldNorm(doc=5812)
          0.031480644 = weight(abstract_txt:users in 5812) [ClassicSimilarity], result of:
            0.031480644 = score(doc=5812,freq=1.0), product of:
              0.11260849 = queryWeight, product of:
                2.99692 = boost
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.0105005875 = queryNorm
              0.27955833 = fieldWeight in 5812, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.5783465 = idf(docFreq=3210, maxDocs=42306)
                0.078125 = fieldNorm(doc=5812)
          0.08924027 = weight(abstract_txt:user in 5812) [ClassicSimilarity], result of:
            0.08924027 = score(doc=5812,freq=5.0), product of:
              0.13885929 = queryWeight, product of:
                3.594599 = boost
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.0105005875 = queryNorm
              0.6426669 = fieldWeight in 5812, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.67884 = idf(docFreq=2903, maxDocs=42306)
                0.078125 = fieldNorm(doc=5812)
          0.09617925 = weight(abstract_txt:system in 5812) [ClassicSimilarity], result of:
            0.09617925 = score(doc=5812,freq=6.0), product of:
              0.149363 = queryWeight, product of:
                4.227238 = boost
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.0105005875 = queryNorm
              0.64392954 = fieldWeight in 5812, product of:
                2.4494898 = tf(freq=6.0), with freq of:
                  6.0 = termFreq=6.0
                3.3649042 = idf(docFreq=3974, maxDocs=42306)
                0.078125 = fieldNorm(doc=5812)
          0.7559446 = weight(abstract_txt:centred in 5812) [ClassicSimilarity], result of:
            0.7559446 = score(doc=5812,freq=3.0), product of:
              0.7439186 = queryWeight, product of:
                9.434045 = boost
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.0105005875 = queryNorm
              1.0161657 = fieldWeight in 5812, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                7.5095496 = idf(docFreq=62, maxDocs=42306)
                0.078125 = fieldNorm(doc=5812)
        0.2 = coord(5/25)