Document (#23271)

Author

Nelson, J.L.

Title

¬An analysis of transaction logs to evaluate the educational needs of end users

Source

Medical reference services quarterly. 11(1992) no.4, S.11-21

Year

1992

Abstract

End users at Univ. of Southern California (USC) have free access to the last 10 years of MEDLINE via local online system known as USCInfo. Librarians at USC Norris Medical Library provide documentation and offer formal and informal training on the use of the system to search MEDLINE. To assess the educational needs of the end users, 643 searches were analysed. Although a high proportion (84%) of the searches were judged to be successful, the use of MeSH to obtain optimal results was low; only 20% of all successful subject searches employed MeSH. In addition, the advanced features of MEDLINE were underutilized. While it is promising to learn that many end users are obtaining positive results, methods which will encourage end users to improve their retrieval need to be developed

Theme

Benutzerstudien

Object

MeSH
MEDLINE

Similar documents (author)

1. Nelson, M.J.: Correlation of term usage and term indexing frequencies (1988) 5.02

   5.020828 = sum of:
     5.020828 = weight(author_txt:nelson in 651) [ClassicSimilarity], result of:
       5.020828 = score(doc=651,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.12448145 = queryNorm
         5.0208282 = fieldWeight in 651, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.625 = fieldNorm(doc=651)
   

2. Nelson, M.G.: Catalogers as librarians (1986) 5.02

   5.020828 = sum of:
     5.020828 = weight(author_txt:nelson in 2880) [ClassicSimilarity], result of:
       5.020828 = score(doc=2880,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.12448145 = queryNorm
         5.0208282 = fieldWeight in 2880, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.625 = fieldNorm(doc=2880)
   

3. Nelson, T.H.: ¬A file structure for the complex, the changing, and the indeterminate (1965) 5.02

   5.020828 = sum of:
     5.020828 = weight(author_txt:nelson in 4468) [ClassicSimilarity], result of:
       5.020828 = score(doc=4468,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.12448145 = queryNorm
         5.0208282 = fieldWeight in 4468, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.625 = fieldNorm(doc=4468)
   

4. Nelson, M.J.: ¬The design of a hypertext interface for information retrieval (1991) 5.02

   5.020828 = sum of:
     5.020828 = weight(author_txt:nelson in 4805) [ClassicSimilarity], result of:
       5.020828 = score(doc=4805,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.12448145 = queryNorm
         5.0208282 = fieldWeight in 4805, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.625 = fieldNorm(doc=4805)
   

5. Nelson, S.J.: From meaning to term : semantic locality in the UMLS metathesaurus (1992) 5.02

   5.020828 = sum of:
     5.020828 = weight(author_txt:nelson in 5611) [ClassicSimilarity], result of:
       5.020828 = score(doc=5611,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.12448145 = queryNorm
         5.0208282 = fieldWeight in 5611, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           8.033325 = idf(docFreq=38, maxDocs=44218)
           0.625 = fieldNorm(doc=5611)
   

Similar documents (content)

1. King, N.S.: End-user errors : a content analysis of PaperChase transaction logs (1993) 0.31

   0.30795988 = sum of:
     0.30795988 = product of:
       0.9623747 = sum of:
         0.13239801 = weight(abstract_txt:logs in 6737) [ClassicSimilarity], result of:
           0.13239801 = score(doc=6737,freq=2.0), product of:
             0.14875117 = queryWeight, product of:
               1.0688598 = boost
               6.7132807 = idf(docFreq=145, maxDocs=44218)
               0.020730263 = queryNorm
             0.8900637 = fieldWeight in 6737, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.7132807 = idf(docFreq=145, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
         0.023734162 = weight(abstract_txt:system in 6737) [ClassicSimilarity], result of:
           0.023734162 = score(doc=6737,freq=1.0), product of:
             0.07507154 = queryWeight, product of:
               1.0738491 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.020730263 = queryNorm
             0.3161539 = fieldWeight in 6737, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
         0.13845217 = weight(abstract_txt:transaction in 6737) [ClassicSimilarity], result of:
           0.13845217 = score(doc=6737,freq=2.0), product of:
             0.15325192 = queryWeight, product of:
               1.0849096 = boost
               6.8140855 = idf(docFreq=131, maxDocs=44218)
               0.020730263 = queryNorm
             0.9034286 = fieldWeight in 6737, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.8140855 = idf(docFreq=131, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
         0.036961645 = weight(abstract_txt:results in 6737) [ClassicSimilarity], result of:
           0.036961645 = score(doc=6737,freq=2.0), product of:
             0.080054104 = queryWeight, product of:
               1.1089127 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.020730263 = queryNorm
             0.4617083 = fieldWeight in 6737, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
         0.17127547 = weight(abstract_txt:univ in 6737) [ClassicSimilarity], result of:
           0.17127547 = score(doc=6737,freq=2.0), product of:
             0.17660494 = queryWeight, product of:
               1.1646408 = boost
               7.314861 = idf(docFreq=79, maxDocs=44218)
               0.020730263 = queryNorm
             0.96982265 = fieldWeight in 6737, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.314861 = idf(docFreq=79, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
         0.045888525 = weight(abstract_txt:were in 6737) [ClassicSimilarity], result of:
           0.045888525 = score(doc=6737,freq=1.0), product of:
             0.13337032 = queryWeight, product of:
               1.7529955 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.020730263 = queryNorm
             0.34406847 = fieldWeight in 6737, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
         0.121903524 = weight(abstract_txt:users in 6737) [ClassicSimilarity], result of:
           0.121903524 = score(doc=6737,freq=3.0), product of:
             0.21030188 = queryWeight, product of:
               2.8418238 = boost
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.020730263 = queryNorm
             0.5796597 = fieldWeight in 6737, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
         0.2917612 = weight(abstract_txt:medline in 6737) [ClassicSimilarity], result of:
           0.2917612 = score(doc=6737,freq=1.0), product of:
             0.4577287 = queryWeight, product of:
               3.2475457 = boost
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.020730263 = queryNorm
             0.6374107 = fieldWeight in 6737, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.09375 = fieldNorm(doc=6737)
       0.32 = coord(8/25)
   

2. Jacobs, M.: Criteria for evaluating alternative MEDLINE search engines (1998) 0.22

   0.22389224 = sum of:
     0.22389224 = product of:
       0.93288434 = sum of:
         0.02177986 = weight(abstract_txt:results in 3264) [ClassicSimilarity], result of:
           0.02177986 = score(doc=3264,freq=1.0), product of:
             0.080054104 = queryWeight, product of:
               1.1089127 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.020730263 = queryNorm
             0.27206424 = fieldWeight in 3264, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.078125 = fieldNorm(doc=3264)
         0.038240436 = weight(abstract_txt:were in 3264) [ClassicSimilarity], result of:
           0.038240436 = score(doc=3264,freq=1.0), product of:
             0.13337032 = queryWeight, product of:
               1.7529955 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.020730263 = queryNorm
             0.28672373 = fieldWeight in 3264, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.078125 = fieldNorm(doc=3264)
         0.28257796 = weight(abstract_txt:mesh in 3264) [ClassicSimilarity], result of:
           0.28257796 = score(doc=3264,freq=2.0), product of:
             0.35082924 = queryWeight, product of:
               2.3214185 = boost
               7.290168 = idf(docFreq=81, maxDocs=44218)
               0.020730263 = queryNorm
             0.8054573 = fieldWeight in 3264, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.290168 = idf(docFreq=81, maxDocs=44218)
               0.078125 = fieldNorm(doc=3264)
         0.11051425 = weight(abstract_txt:searches in 3264) [ClassicSimilarity], result of:
           0.11051425 = score(doc=3264,freq=1.0), product of:
             0.27059692 = queryWeight, product of:
               2.496966 = boost
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.020730263 = queryNorm
             0.40840912 = fieldWeight in 3264, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.078125 = fieldNorm(doc=3264)
         0.058650862 = weight(abstract_txt:users in 3264) [ClassicSimilarity], result of:
           0.058650862 = score(doc=3264,freq=1.0), product of:
             0.21030188 = queryWeight, product of:
               2.8418238 = boost
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.020730263 = queryNorm
             0.2788889 = fieldWeight in 3264, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.078125 = fieldNorm(doc=3264)
         0.42112097 = weight(abstract_txt:medline in 3264) [ClassicSimilarity], result of:
           0.42112097 = score(doc=3264,freq=3.0), product of:
             0.4577287 = queryWeight, product of:
               3.2475457 = boost
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.020730263 = queryNorm
             0.9200231 = fieldWeight in 3264, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.078125 = fieldNorm(doc=3264)
       0.24 = coord(6/25)
   

3. Hunter, R.N.: Successes and failures of patrons searching the online catalog at a large academic library : a transaction log analysis (1991) 0.20

   0.20035179 = sum of:
     0.20035179 = product of:
       0.7155421 = sum of:
         0.13239801 = weight(abstract_txt:logs in 489) [ClassicSimilarity], result of:
           0.13239801 = score(doc=489,freq=2.0), product of:
             0.14875117 = queryWeight, product of:
               1.0688598 = boost
               6.7132807 = idf(docFreq=145, maxDocs=44218)
               0.020730263 = queryNorm
             0.8900637 = fieldWeight in 489, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.7132807 = idf(docFreq=145, maxDocs=44218)
               0.09375 = fieldNorm(doc=489)
         0.023734162 = weight(abstract_txt:system in 489) [ClassicSimilarity], result of:
           0.023734162 = score(doc=489,freq=1.0), product of:
             0.07507154 = queryWeight, product of:
               1.0738491 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.020730263 = queryNorm
             0.3161539 = fieldWeight in 489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.09375 = fieldNorm(doc=489)
         0.1695686 = weight(abstract_txt:transaction in 489) [ClassicSimilarity], result of:
           0.1695686 = score(doc=489,freq=3.0), product of:
             0.15325192 = queryWeight, product of:
               1.0849096 = boost
               6.8140855 = idf(docFreq=131, maxDocs=44218)
               0.020730263 = queryNorm
             1.1064696 = fieldWeight in 489, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.8140855 = idf(docFreq=131, maxDocs=44218)
               0.09375 = fieldNorm(doc=489)
         0.06489617 = weight(abstract_txt:were in 489) [ClassicSimilarity], result of:
           0.06489617 = score(doc=489,freq=2.0), product of:
             0.13337032 = queryWeight, product of:
               1.7529955 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.020730263 = queryNorm
             0.48658627 = fieldWeight in 489, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.09375 = fieldNorm(doc=489)
         0.12194697 = weight(abstract_txt:successful in 489) [ClassicSimilarity], result of:
           0.12194697 = score(doc=489,freq=1.0), product of:
             0.22353218 = queryWeight, product of:
               1.8530008 = boost
               5.8191514 = idf(docFreq=356, maxDocs=44218)
               0.020730263 = queryNorm
             0.54554546 = fieldWeight in 489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8191514 = idf(docFreq=356, maxDocs=44218)
               0.09375 = fieldNorm(doc=489)
         0.1326171 = weight(abstract_txt:searches in 489) [ClassicSimilarity], result of:
           0.1326171 = score(doc=489,freq=1.0), product of:
             0.27059692 = queryWeight, product of:
               2.496966 = boost
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.020730263 = queryNorm
             0.49009097 = fieldWeight in 489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.09375 = fieldNorm(doc=489)
         0.07038103 = weight(abstract_txt:users in 489) [ClassicSimilarity], result of:
           0.07038103 = score(doc=489,freq=1.0), product of:
             0.21030188 = queryWeight, product of:
               2.8418238 = boost
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.020730263 = queryNorm
             0.33466667 = fieldWeight in 489, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.09375 = fieldNorm(doc=489)
       0.28 = coord(7/25)
   

4. Dalrymple, P.W.; Cox, R.: ¬An examination of the effects of non-Boolean enhancements to an information retrieval system (1992) 0.20

   0.19887094 = sum of:
     0.19887094 = product of:
       0.6214717 = sum of:
         0.015822776 = weight(abstract_txt:system in 2939) [ClassicSimilarity], result of:
           0.015822776 = score(doc=2939,freq=1.0), product of:
             0.07507154 = queryWeight, product of:
               1.0738491 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.020730263 = queryNorm
             0.21076928 = fieldWeight in 2939, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
         0.017423887 = weight(abstract_txt:results in 2939) [ClassicSimilarity], result of:
           0.017423887 = score(doc=2939,freq=1.0), product of:
             0.080054104 = queryWeight, product of:
               1.1089127 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.020730263 = queryNorm
             0.21765138 = fieldWeight in 2939, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
         0.035835955 = weight(abstract_txt:needs in 2939) [ClassicSimilarity], result of:
           0.035835955 = score(doc=2939,freq=1.0), product of:
             0.12946913 = queryWeight, product of:
               1.4102259 = boost
               4.428664 = idf(docFreq=1433, maxDocs=44218)
               0.020730263 = queryNorm
             0.2767915 = fieldWeight in 2939, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.428664 = idf(docFreq=1433, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
         0.043264113 = weight(abstract_txt:were in 2939) [ClassicSimilarity], result of:
           0.043264113 = score(doc=2939,freq=2.0), product of:
             0.13337032 = queryWeight, product of:
               1.7529955 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.020730263 = queryNorm
             0.32439086 = fieldWeight in 2939, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
         0.15985025 = weight(abstract_txt:mesh in 2939) [ClassicSimilarity], result of:
           0.15985025 = score(doc=2939,freq=1.0), product of:
             0.35082924 = queryWeight, product of:
               2.3214185 = boost
               7.290168 = idf(docFreq=81, maxDocs=44218)
               0.020730263 = queryNorm
             0.4556355 = fieldWeight in 2939, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.290168 = idf(docFreq=81, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
         0.0884114 = weight(abstract_txt:searches in 2939) [ClassicSimilarity], result of:
           0.0884114 = score(doc=2939,freq=1.0), product of:
             0.27059692 = queryWeight, product of:
               2.496966 = boost
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.020730263 = queryNorm
             0.3267273 = fieldWeight in 2939, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
         0.06635588 = weight(abstract_txt:users in 2939) [ClassicSimilarity], result of:
           0.06635588 = score(doc=2939,freq=2.0), product of:
             0.21030188 = queryWeight, product of:
               2.8418238 = boost
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.020730263 = queryNorm
             0.31552678 = fieldWeight in 2939, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.569778 = idf(docFreq=3384, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
         0.19450745 = weight(abstract_txt:medline in 2939) [ClassicSimilarity], result of:
           0.19450745 = score(doc=2939,freq=1.0), product of:
             0.4577287 = queryWeight, product of:
               3.2475457 = boost
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.020730263 = queryNorm
             0.42494047 = fieldWeight in 2939, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.0625 = fieldNorm(doc=2939)
       0.32 = coord(8/25)
   

5. MacCain, K.W.; White, H.D.; Griffith, B.C.: Comparing retrieval performance in online data bases (1987) 0.19

   0.19444908 = sum of:
     0.19444908 = product of:
       0.9722454 = sum of:
         0.017423887 = weight(abstract_txt:results in 1167) [ClassicSimilarity], result of:
           0.017423887 = score(doc=1167,freq=1.0), product of:
             0.080054104 = queryWeight, product of:
               1.1089127 = boost
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.020730263 = queryNorm
             0.21765138 = fieldWeight in 1167, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.482422 = idf(docFreq=3693, maxDocs=44218)
               0.0625 = fieldNorm(doc=1167)
         0.16245566 = weight(abstract_txt:judged in 1167) [ClassicSimilarity], result of:
           0.16245566 = score(doc=1167,freq=3.0), product of:
             0.19516101 = queryWeight, product of:
               1.2242979 = boost
               7.689554 = idf(docFreq=54, maxDocs=44218)
               0.020730263 = queryNorm
             0.8324186 = fieldWeight in 1167, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               7.689554 = idf(docFreq=54, maxDocs=44218)
               0.0625 = fieldNorm(doc=1167)
         0.0611847 = weight(abstract_txt:were in 1167) [ClassicSimilarity], result of:
           0.0611847 = score(doc=1167,freq=4.0), product of:
             0.13337032 = queryWeight, product of:
               1.7529955 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.020730263 = queryNorm
             0.45875797 = fieldWeight in 1167, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.0625 = fieldNorm(doc=1167)
         0.21656282 = weight(abstract_txt:searches in 1167) [ClassicSimilarity], result of:
           0.21656282 = score(doc=1167,freq=6.0), product of:
             0.27059692 = queryWeight, product of:
               2.496966 = boost
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.020730263 = queryNorm
             0.8003152 = fieldWeight in 1167, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.227637 = idf(docFreq=644, maxDocs=44218)
               0.0625 = fieldNorm(doc=1167)
         0.51461834 = weight(abstract_txt:medline in 1167) [ClassicSimilarity], result of:
           0.51461834 = score(doc=1167,freq=7.0), product of:
             0.4577287 = queryWeight, product of:
               3.2475457 = boost
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.020730263 = queryNorm
             1.1242868 = fieldWeight in 1167, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               6.7990475 = idf(docFreq=133, maxDocs=44218)
               0.0625 = fieldNorm(doc=1167)
       0.2 = coord(5/25)