Document (#16515)

Author
Robertson, S.E.
Beaulieu, M.
Title
Research and evaluation in information retrieval
Source
Journal of documentation. 53(1997) no.1, S.51-57
Year
1997
Abstract
Offered as a discussion document drawing on the experiences of the Okapi team in developing information retrieval systems. Raises some of the issues currently exercising the information retrieval community in the context of experimentation and evaluation
Content
Vgl. auch unter: http://www.emeraldinsight.com/10.1108/EUM0000000007190.
Footnote
Contribution to a thematic issue on Okapi and information retrieval research
Object
Okapi

Similar documents (author)

  1. Robertson, S.E.; Hancock-Beaulieu, M.M.: On the evaluation of IR systems (1992) 4.73
    4.725236 = sum of:
      4.725236 = sum of:
        2.0650191 = weight(author_txt:robertson in 2619) [ClassicSimilarity], result of:
          2.0650191 = score(doc=2619,freq=1.0), product of:
            0.6452678 = queryWeight, product of:
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.088213265 = queryNorm
            3.2002516 = fieldWeight in 2619, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.4375 = fieldNorm(doc=2619)
        2.660217 = weight(author_txt:beaulieu in 2619) [ClassicSimilarity], result of:
          2.660217 = score(doc=2619,freq=1.0), product of:
            0.7639565 = queryWeight, product of:
              1.0880888 = boost
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.088213265 = queryNorm
            3.4821577 = fieldWeight in 2619, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.4375 = fieldNorm(doc=2619)
    
  2. Hancock-Beaulieu, M.; Robertson, S.E.; Neilson, C.: Evaluation of online catalogues : an assessment of methods (1990) 4.05
    4.0502024 = sum of:
      4.0502024 = sum of:
        1.7700164 = weight(author_txt:robertson in 5262) [ClassicSimilarity], result of:
          1.7700164 = score(doc=5262,freq=1.0), product of:
            0.6452678 = queryWeight, product of:
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.088213265 = queryNorm
            2.7430727 = fieldWeight in 5262, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.375 = fieldNorm(doc=5262)
        2.280186 = weight(author_txt:beaulieu in 5262) [ClassicSimilarity], result of:
          2.280186 = score(doc=5262,freq=1.0), product of:
            0.7639565 = queryWeight, product of:
              1.0880888 = boost
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.088213265 = queryNorm
            2.9847066 = fieldWeight in 5262, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.375 = fieldNorm(doc=5262)
    
  3. Robertson, S.E.; Walker, S.; Beaulieu, M.: Laboratory experiments with Okapi : participation in the TREC programme (1997) 4.05
    4.0502024 = sum of:
      4.0502024 = sum of:
        1.7700164 = weight(author_txt:robertson in 2216) [ClassicSimilarity], result of:
          1.7700164 = score(doc=2216,freq=1.0), product of:
            0.6452678 = queryWeight, product of:
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.088213265 = queryNorm
            2.7430727 = fieldWeight in 2216, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.375 = fieldNorm(doc=2216)
        2.280186 = weight(author_txt:beaulieu in 2216) [ClassicSimilarity], result of:
          2.280186 = score(doc=2216,freq=1.0), product of:
            0.7639565 = queryWeight, product of:
              1.0880888 = boost
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.088213265 = queryNorm
            2.9847066 = fieldWeight in 2216, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.375 = fieldNorm(doc=2216)
    
  4. Beaulieu, M.; Robertson, S.; Rasmussen, E.: Evaluating interactive systems in TREC (1996) 4.05
    4.0502024 = sum of:
      4.0502024 = sum of:
        1.7700164 = weight(author_txt:robertson in 2998) [ClassicSimilarity], result of:
          1.7700164 = score(doc=2998,freq=1.0), product of:
            0.6452678 = queryWeight, product of:
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.088213265 = queryNorm
            2.7430727 = fieldWeight in 2998, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.375 = fieldNorm(doc=2998)
        2.280186 = weight(author_txt:beaulieu in 2998) [ClassicSimilarity], result of:
          2.280186 = score(doc=2998,freq=1.0), product of:
            0.7639565 = queryWeight, product of:
              1.0880888 = boost
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.088213265 = queryNorm
            2.9847066 = fieldWeight in 2998, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.375 = fieldNorm(doc=2998)
    
  5. Robertson, S.E.; Walker, S.; Beaulieu, M.: Experimentation as a way of life : Okapi at TREC (2000) 4.05
    4.0502024 = sum of:
      4.0502024 = sum of:
        1.7700164 = weight(author_txt:robertson in 6030) [ClassicSimilarity], result of:
          1.7700164 = score(doc=6030,freq=1.0), product of:
            0.6452678 = queryWeight, product of:
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.088213265 = queryNorm
            2.7430727 = fieldWeight in 6030, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.314861 = idf(docFreq=79, maxDocs=44218)
              0.375 = fieldNorm(doc=6030)
        2.280186 = weight(author_txt:beaulieu in 6030) [ClassicSimilarity], result of:
          2.280186 = score(doc=6030,freq=1.0), product of:
            0.7639565 = queryWeight, product of:
              1.0880888 = boost
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.088213265 = queryNorm
            2.9847066 = fieldWeight in 6030, product of:
              1.0 = tf(freq=1.0), with freq of:
                1.0 = termFreq=1.0
              7.9592175 = idf(docFreq=41, maxDocs=44218)
              0.375 = fieldNorm(doc=6030)
    

Similar documents (content)

  1. Keen, M.: ¬The Okapi projects (1997) 0.28
    0.28154537 = sum of:
      0.28154537 = product of:
        0.9854088 = sum of:
          0.035411663 = weight(abstract_txt:systems in 7461) [ClassicSimilarity], result of:
            0.035411663 = score(doc=7461,freq=1.0), product of:
              0.06642519 = queryWeight, product of:
                1.0761876 = boost
                3.4118783 = idf(docFreq=3963, maxDocs=44218)
                0.01809053 = queryNorm
              0.53310597 = fieldWeight in 7461, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4118783 = idf(docFreq=3963, maxDocs=44218)
                0.15625 = fieldNorm(doc=7461)
          0.070975795 = weight(abstract_txt:issues in 7461) [ClassicSimilarity], result of:
            0.070975795 = score(doc=7461,freq=1.0), product of:
              0.10559469 = queryWeight, product of:
                1.3568836 = boost
                4.3017797 = idf(docFreq=1627, maxDocs=44218)
                0.01809053 = queryNorm
              0.6721531 = fieldWeight in 7461, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3017797 = idf(docFreq=1627, maxDocs=44218)
                0.15625 = fieldNorm(doc=7461)
          0.06573598 = weight(abstract_txt:information in 7461) [ClassicSimilarity], result of:
            0.06573598 = score(doc=7461,freq=3.0), product of:
              0.10033151 = queryWeight, product of:
                2.2908723 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.01809053 = queryNorm
              0.65518785 = fieldWeight in 7461, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.15625 = fieldNorm(doc=7461)
          0.4578669 = weight(abstract_txt:okapi in 7461) [ClassicSimilarity], result of:
            0.4578669 = score(doc=7461,freq=1.0), product of:
              0.36592725 = queryWeight, product of:
                2.5259163 = boost
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.01809053 = queryNorm
              1.2512512 = fieldWeight in 7461, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.15625 = fieldNorm(doc=7461)
          0.160988 = weight(abstract_txt:evaluation in 7461) [ClassicSimilarity], result of:
            0.160988 = score(doc=7461,freq=1.0), product of:
              0.22967173 = queryWeight, product of:
                2.8300257 = boost
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.01809053 = queryNorm
              0.70094824 = fieldWeight in 7461, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.15625 = fieldNorm(doc=7461)
          0.19443044 = weight(abstract_txt:retrieval in 7461) [ClassicSimilarity], result of:
            0.19443044 = score(doc=7461,freq=3.0), product of:
              0.20673376 = queryWeight, product of:
                3.2884247 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.01809053 = queryNorm
              0.94048715 = fieldWeight in 7461, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.15625 = fieldNorm(doc=7461)
        0.2857143 = coord(6/21)
    
  2. Robertson, S.E.; Walker, S.; Beaulieu, M.: Laboratory experiments with Okapi : participation in the TREC programme (1997) 0.25
    0.24568388 = sum of:
      0.24568388 = product of:
        0.6449202 = sum of:
          0.021247 = weight(abstract_txt:systems in 2216) [ClassicSimilarity], result of:
            0.021247 = score(doc=2216,freq=1.0), product of:
              0.06642519 = queryWeight, product of:
                1.0761876 = boost
                3.4118783 = idf(docFreq=3963, maxDocs=44218)
                0.01809053 = queryNorm
              0.3198636 = fieldWeight in 2216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4118783 = idf(docFreq=3963, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
          0.02661511 = weight(abstract_txt:some in 2216) [ClassicSimilarity], result of:
            0.02661511 = score(doc=2216,freq=1.0), product of:
              0.07718861 = queryWeight, product of:
                1.1601074 = boost
                3.6779325 = idf(docFreq=3037, maxDocs=44218)
                0.01809053 = queryNorm
              0.34480616 = fieldWeight in 2216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6779325 = idf(docFreq=3037, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
          0.042585477 = weight(abstract_txt:issues in 2216) [ClassicSimilarity], result of:
            0.042585477 = score(doc=2216,freq=1.0), product of:
              0.10559469 = queryWeight, product of:
                1.3568836 = boost
                4.3017797 = idf(docFreq=1627, maxDocs=44218)
                0.01809053 = queryNorm
              0.40329185 = fieldWeight in 2216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3017797 = idf(docFreq=1627, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
          0.04372974 = weight(abstract_txt:context in 2216) [ClassicSimilarity], result of:
            0.04372974 = score(doc=2216,freq=1.0), product of:
              0.10747786 = queryWeight, product of:
                1.3689295 = boost
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.01809053 = queryNorm
              0.4068721 = fieldWeight in 2216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
          0.022771614 = weight(abstract_txt:information in 2216) [ClassicSimilarity], result of:
            0.022771614 = score(doc=2216,freq=1.0), product of:
              0.10033151 = queryWeight, product of:
                2.2908723 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.01809053 = queryNorm
              0.22696373 = fieldWeight in 2216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
          0.27472016 = weight(abstract_txt:okapi in 2216) [ClassicSimilarity], result of:
            0.27472016 = score(doc=2216,freq=1.0), product of:
              0.36592725 = queryWeight, product of:
                2.5259163 = boost
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.01809053 = queryNorm
              0.7507508 = fieldWeight in 2216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
          0.0965928 = weight(abstract_txt:evaluation in 2216) [ClassicSimilarity], result of:
            0.0965928 = score(doc=2216,freq=1.0), product of:
              0.22967173 = queryWeight, product of:
                2.8300257 = boost
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.01809053 = queryNorm
              0.42056894 = fieldWeight in 2216, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
          0.11665827 = weight(abstract_txt:retrieval in 2216) [ClassicSimilarity], result of:
            0.11665827 = score(doc=2216,freq=3.0), product of:
              0.20673376 = queryWeight, product of:
                3.2884247 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.01809053 = queryNorm
              0.5642923 = fieldWeight in 2216, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.09375 = fieldNorm(doc=2216)
        0.3809524 = coord(8/21)
    
  3. Okapi and information retrieval (1997) 0.24
    0.24247038 = sum of:
      0.24247038 = product of:
        1.2729695 = sum of:
          0.05682146 = weight(abstract_txt:research in 7449) [ClassicSimilarity], result of:
            0.05682146 = score(doc=7449,freq=1.0), product of:
              0.05735309 = queryWeight, product of:
                3.170338 = idf(docFreq=5046, maxDocs=44218)
                0.01809053 = queryNorm
              0.9907306 = fieldWeight in 7449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.170338 = idf(docFreq=5046, maxDocs=44218)
                0.3125 = fieldNorm(doc=7449)
          0.075905375 = weight(abstract_txt:information in 7449) [ClassicSimilarity], result of:
            0.075905375 = score(doc=7449,freq=1.0), product of:
              0.10033151 = queryWeight, product of:
                2.2908723 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.01809053 = queryNorm
              0.7565457 = fieldWeight in 7449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.3125 = fieldNorm(doc=7449)
          0.9157338 = weight(abstract_txt:okapi in 7449) [ClassicSimilarity], result of:
            0.9157338 = score(doc=7449,freq=1.0), product of:
              0.36592725 = queryWeight, product of:
                2.5259163 = boost
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.01809053 = queryNorm
              2.5025024 = fieldWeight in 7449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.3125 = fieldNorm(doc=7449)
          0.22450894 = weight(abstract_txt:retrieval in 7449) [ClassicSimilarity], result of:
            0.22450894 = score(doc=7449,freq=1.0), product of:
              0.20673376 = queryWeight, product of:
                3.2884247 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.01809053 = queryNorm
              1.085981 = fieldWeight in 7449, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.3125 = fieldNorm(doc=7449)
        0.1904762 = coord(4/21)
    
  4. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 0.22
    0.22064304 = sum of:
      0.22064304 = product of:
        0.66192913 = sum of:
          0.024107303 = weight(abstract_txt:research in 1318) [ClassicSimilarity], result of:
            0.024107303 = score(doc=1318,freq=2.0), product of:
              0.05735309 = queryWeight, product of:
                3.170338 = idf(docFreq=5046, maxDocs=44218)
                0.01809053 = queryNorm
              0.4203314 = fieldWeight in 1318, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.170338 = idf(docFreq=5046, maxDocs=44218)
                0.09375 = fieldNorm(doc=1318)
          0.042585477 = weight(abstract_txt:issues in 1318) [ClassicSimilarity], result of:
            0.042585477 = score(doc=1318,freq=1.0), product of:
              0.10559469 = queryWeight, product of:
                1.3568836 = boost
                4.3017797 = idf(docFreq=1627, maxDocs=44218)
                0.01809053 = queryNorm
              0.40329185 = fieldWeight in 1318, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.3017797 = idf(docFreq=1627, maxDocs=44218)
                0.09375 = fieldNorm(doc=1318)
          0.04372974 = weight(abstract_txt:context in 1318) [ClassicSimilarity], result of:
            0.04372974 = score(doc=1318,freq=1.0), product of:
              0.10747786 = queryWeight, product of:
                1.3689295 = boost
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.01809053 = queryNorm
              0.4068721 = fieldWeight in 1318, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.09375 = fieldNorm(doc=1318)
          0.072830945 = weight(abstract_txt:discussion in 1318) [ClassicSimilarity], result of:
            0.072830945 = score(doc=1318,freq=1.0), product of:
              0.15101208 = queryWeight, product of:
                1.6226596 = boost
                5.144379 = idf(docFreq=700, maxDocs=44218)
                0.01809053 = queryNorm
              0.48228556 = fieldWeight in 1318, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.144379 = idf(docFreq=700, maxDocs=44218)
                0.09375 = fieldNorm(doc=1318)
          0.27472016 = weight(abstract_txt:okapi in 1318) [ClassicSimilarity], result of:
            0.27472016 = score(doc=1318,freq=1.0), product of:
              0.36592725 = queryWeight, product of:
                2.5259163 = boost
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.01809053 = queryNorm
              0.7507508 = fieldWeight in 1318, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.09375 = fieldNorm(doc=1318)
          0.13660285 = weight(abstract_txt:evaluation in 1318) [ClassicSimilarity], result of:
            0.13660285 = score(doc=1318,freq=2.0), product of:
              0.22967173 = queryWeight, product of:
                2.8300257 = boost
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.01809053 = queryNorm
              0.5947743 = fieldWeight in 1318, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.09375 = fieldNorm(doc=1318)
          0.06735268 = weight(abstract_txt:retrieval in 1318) [ClassicSimilarity], result of:
            0.06735268 = score(doc=1318,freq=1.0), product of:
              0.20673376 = queryWeight, product of:
                3.2884247 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.01809053 = queryNorm
              0.3257943 = fieldWeight in 1318, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.09375 = fieldNorm(doc=1318)
        0.33333334 = coord(7/21)
    
  5. Goker, A.: Context learning in Okapi (1997) 0.21
    0.21414968 = sum of:
      0.21414968 = product of:
        0.7495239 = sum of:
          0.024788165 = weight(abstract_txt:systems in 7457) [ClassicSimilarity], result of:
            0.024788165 = score(doc=7457,freq=1.0), product of:
              0.06642519 = queryWeight, product of:
                1.0761876 = boost
                3.4118783 = idf(docFreq=3963, maxDocs=44218)
                0.01809053 = queryNorm
              0.3731742 = fieldWeight in 7457, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4118783 = idf(docFreq=3963, maxDocs=44218)
                0.109375 = fieldNorm(doc=7457)
          0.08836582 = weight(abstract_txt:context in 7457) [ClassicSimilarity], result of:
            0.08836582 = score(doc=7457,freq=3.0), product of:
              0.10747786 = queryWeight, product of:
                1.3689295 = boost
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.01809053 = queryNorm
              0.822177 = fieldWeight in 7457, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.339969 = idf(docFreq=1566, maxDocs=44218)
                0.109375 = fieldNorm(doc=7457)
          0.046015184 = weight(abstract_txt:information in 7457) [ClassicSimilarity], result of:
            0.046015184 = score(doc=7457,freq=3.0), product of:
              0.10033151 = queryWeight, product of:
                2.2908723 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.01809053 = queryNorm
              0.45863146 = fieldWeight in 7457, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.109375 = fieldNorm(doc=7457)
          0.32050684 = weight(abstract_txt:okapi in 7457) [ClassicSimilarity], result of:
            0.32050684 = score(doc=7457,freq=1.0), product of:
              0.36592725 = queryWeight, product of:
                2.5259163 = boost
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.01809053 = queryNorm
              0.8758759 = fieldWeight in 7457, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.008008 = idf(docFreq=39, maxDocs=44218)
                0.109375 = fieldNorm(doc=7457)
          0.112691596 = weight(abstract_txt:evaluation in 7457) [ClassicSimilarity], result of:
            0.112691596 = score(doc=7457,freq=1.0), product of:
              0.22967173 = queryWeight, product of:
                2.8300257 = boost
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.01809053 = queryNorm
              0.49066377 = fieldWeight in 7457, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4860687 = idf(docFreq=1353, maxDocs=44218)
                0.109375 = fieldNorm(doc=7457)
          0.15715626 = weight(abstract_txt:retrieval in 7457) [ClassicSimilarity], result of:
            0.15715626 = score(doc=7457,freq=4.0), product of:
              0.20673376 = queryWeight, product of:
                3.2884247 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.01809053 = queryNorm
              0.76018673 = fieldWeight in 7457, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.109375 = fieldNorm(doc=7457)
        0.2857143 = coord(6/21)