Document (#36063)

Author

Doorn, M. van
Polman, K.

Title

From classification to thesaurus ... and back? : subject indexing tools at the library of the Afrika-Studiecentrum Leiden

Source

Knowledge organization. 37(2010) no.3, S.203-208

Year

2010

Abstract

An African Studies Thesaurus was constructed for the purpose of subject indexing and retrieval in the Library of the African Studies Centre (ASC) in Leiden in 2001-2006. A word-based system was considered a more user-friendly alternative to the Universal Decimal Classification (UDC) codes which were used for subject access in the ASC catalogue at the time. In the process of thesaurus construction UDC codes were used as a starting point. In addition, when constructing the thesaurus, each descriptor was also assigned a UDC code from the recent edition of the UDC Master Reference File (MRF), thus replacing many of the old UDC codes used by then, some of which dated from the 1952 French edition. The presence of the UDC codes in the thesaurus leaves open the possibility of linking the thesaurus to different language versions of the UDC MRF in the future. In a parallel but separate operation each UDC code which had been assigned to an item in the library's catalogue was subsequently converted into one or more thesaurus descriptors.

Footnote

Vgl.: http://www.ergon-verlag.de/isko_ko/downloads/ko3720103e.pdf.

Similar documents (content)

1. Devadason, F.J.: Postulate-Based Permuted Subject Indexing Language as a metalanguage for computer-aided generation of information retrieval thesaurus (1983) 0.23

   0.2346393 = sum of:
     0.2346393 = product of:
       0.7332478 = sum of:
         0.01231766 = weight(abstract_txt:from in 1637) [ClassicSimilarity], result of:
           0.01231766 = score(doc=1637,freq=1.0), product of:
             0.057045132 = queryWeight, product of:
               1.1484991 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.017970838 = queryNorm
             0.21592833 = fieldWeight in 1637, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
         0.030237034 = weight(abstract_txt:studies in 1637) [ClassicSimilarity], result of:
           0.030237034 = score(doc=1637,freq=1.0), product of:
             0.09068362 = queryWeight, product of:
               1.182334 = boost
               4.26796 = idf(docFreq=1683, maxDocs=44218)
               0.017970838 = queryNorm
             0.33343437 = fieldWeight in 1637, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.26796 = idf(docFreq=1683, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
         0.032005332 = weight(abstract_txt:indexing in 1637) [ClassicSimilarity], result of:
           0.032005332 = score(doc=1637,freq=1.0), product of:
             0.094185546 = queryWeight, product of:
               1.2049469 = boost
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.017970838 = queryNorm
             0.3398115 = fieldWeight in 1637, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
         0.01447609 = weight(abstract_txt:which in 1637) [ClassicSimilarity], result of:
           0.01447609 = score(doc=1637,freq=1.0), product of:
             0.06352831 = queryWeight, product of:
               1.2120067 = boost
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.017970838 = queryNorm
             0.22786833 = fieldWeight in 1637, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
         0.022116454 = weight(abstract_txt:used in 1637) [ClassicSimilarity], result of:
           0.022116454 = score(doc=1637,freq=1.0), product of:
             0.08427074 = queryWeight, product of:
               1.3959177 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.017970838 = queryNorm
             0.26244524 = fieldWeight in 1637, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
         0.060265187 = weight(abstract_txt:subject in 1637) [ClassicSimilarity], result of:
           0.060265187 = score(doc=1637,freq=3.0), product of:
             0.11399095 = queryWeight, product of:
               1.623516 = boost
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.017970838 = queryNorm
             0.52868396 = fieldWeight in 1637, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
         0.18647538 = weight(abstract_txt:codes in 1637) [ClassicSimilarity], result of:
           0.18647538 = score(doc=1637,freq=1.0), product of:
             0.38423216 = queryWeight, product of:
               3.4418156 = boost
               6.2120905 = idf(docFreq=240, maxDocs=44218)
               0.017970838 = queryNorm
             0.48531955 = fieldWeight in 1637, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2120905 = idf(docFreq=240, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
         0.37535468 = weight(abstract_txt:thesaurus in 1637) [ClassicSimilarity], result of:
           0.37535468 = score(doc=1637,freq=4.0), product of:
             0.4650146 = queryWeight, product of:
               5.0089083 = boost
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.017970838 = queryNorm
             0.807189 = fieldWeight in 1637, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.078125 = fieldNorm(doc=1637)
       0.32 = coord(8/25)
   

2. Francu, V.; Dediu, L.-I.: TinREAD - an integrative solution for subject authority control (2015) 0.20

   0.2003111 = sum of:
     0.2003111 = product of:
       0.5564197 = sum of:
         0.039590802 = weight(abstract_txt:classification in 2297) [ClassicSimilarity], result of:
           0.039590802 = score(doc=2297,freq=4.0), product of:
             0.07933879 = queryWeight, product of:
               1.1059068 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.017970838 = queryNorm
             0.4990094 = fieldWeight in 2297, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.021740122 = weight(abstract_txt:each in 2297) [ClassicSimilarity], result of:
           0.021740122 = score(doc=2297,freq=1.0), product of:
             0.08445344 = queryWeight, product of:
               1.1409968 = boost
               4.118742 = idf(docFreq=1954, maxDocs=44218)
               0.017970838 = queryNorm
             0.25742137 = fieldWeight in 2297, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.118742 = idf(docFreq=1954, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.009854128 = weight(abstract_txt:from in 2297) [ClassicSimilarity], result of:
           0.009854128 = score(doc=2297,freq=1.0), product of:
             0.057045132 = queryWeight, product of:
               1.1484991 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.017970838 = queryNorm
             0.17274266 = fieldWeight in 2297, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.06271739 = weight(abstract_txt:indexing in 2297) [ClassicSimilarity], result of:
           0.06271739 = score(doc=2297,freq=6.0), product of:
             0.094185546 = queryWeight, product of:
               1.2049469 = boost
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.017970838 = queryNorm
             0.6658919 = fieldWeight in 2297, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.011580871 = weight(abstract_txt:which in 2297) [ClassicSimilarity], result of:
           0.011580871 = score(doc=2297,freq=1.0), product of:
             0.06352831 = queryWeight, product of:
               1.2120067 = boost
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.017970838 = queryNorm
             0.18229467 = fieldWeight in 2297, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.030645458 = weight(abstract_txt:used in 2297) [ClassicSimilarity], result of:
           0.030645458 = score(doc=2297,freq=3.0), product of:
             0.08427074 = queryWeight, product of:
               1.3959177 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.017970838 = queryNorm
             0.3636548 = fieldWeight in 2297, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.04821215 = weight(abstract_txt:subject in 2297) [ClassicSimilarity], result of:
           0.04821215 = score(doc=2297,freq=3.0), product of:
             0.11399095 = queryWeight, product of:
               1.623516 = boost
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.017970838 = queryNorm
             0.42294717 = fieldWeight in 2297, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.07202542 = weight(abstract_txt:assigned in 2297) [ClassicSimilarity], result of:
           0.07202542 = score(doc=2297,freq=1.0), product of:
             0.18768659 = queryWeight, product of:
               1.7009532 = boost
               6.140059 = idf(docFreq=258, maxDocs=44218)
               0.017970838 = queryNorm
             0.3837537 = fieldWeight in 2297, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.140059 = idf(docFreq=258, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
         0.26005334 = weight(abstract_txt:thesaurus in 2297) [ClassicSimilarity], result of:
           0.26005334 = score(doc=2297,freq=3.0), product of:
             0.4650146 = queryWeight, product of:
               5.0089083 = boost
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.017970838 = queryNorm
             0.55923694 = fieldWeight in 2297, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.0625 = fieldNorm(doc=2297)
       0.36 = coord(9/25)
   

3. Deokattey, S.; Dixit, D.K.; Bhanumurthy, K.: Co-word and facet analysis as tools for conceptualization in ontologies : a preliminary study of a micro-domain (2012) 0.19

   0.18825507 = sum of:
     0.18825507 = product of:
       0.52293074 = sum of:
         0.04350448 = weight(abstract_txt:were in 841) [ClassicSimilarity], result of:
           0.04350448 = score(doc=841,freq=8.0), product of:
             0.06705565 = queryWeight, product of:
               1.0167015 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.017970838 = queryNorm
             0.6487817 = fieldWeight in 841, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.103802145 = weight(abstract_txt:descriptor in 841) [ClassicSimilarity], result of:
           0.103802145 = score(doc=841,freq=2.0), product of:
             0.1508552 = queryWeight, product of:
               1.0783032 = boost
               7.7848644 = idf(docFreq=49, maxDocs=44218)
               0.017970838 = queryNorm
             0.6880913 = fieldWeight in 841, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.7848644 = idf(docFreq=49, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.021740122 = weight(abstract_txt:each in 841) [ClassicSimilarity], result of:
           0.021740122 = score(doc=841,freq=1.0), product of:
             0.08445344 = queryWeight, product of:
               1.1409968 = boost
               4.118742 = idf(docFreq=1954, maxDocs=44218)
               0.017970838 = queryNorm
             0.25742137 = fieldWeight in 841, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.118742 = idf(docFreq=1954, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.017067851 = weight(abstract_txt:from in 841) [ClassicSimilarity], result of:
           0.017067851 = score(doc=841,freq=3.0), product of:
             0.057045132 = queryWeight, product of:
               1.1484991 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.017970838 = queryNorm
             0.29919907 = fieldWeight in 841, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.011580871 = weight(abstract_txt:which in 841) [ClassicSimilarity], result of:
           0.011580871 = score(doc=841,freq=1.0), product of:
             0.06352831 = queryWeight, product of:
               1.2120067 = boost
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.017970838 = queryNorm
             0.18229467 = fieldWeight in 841, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.02502191 = weight(abstract_txt:used in 841) [ClassicSimilarity], result of:
           0.02502191 = score(doc=841,freq=2.0), product of:
             0.08427074 = queryWeight, product of:
               1.3959177 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.017970838 = queryNorm
             0.2969229 = fieldWeight in 841, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.04821215 = weight(abstract_txt:subject in 841) [ClassicSimilarity], result of:
           0.04821215 = score(doc=841,freq=3.0), product of:
             0.11399095 = queryWeight, product of:
               1.623516 = boost
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.017970838 = queryNorm
             0.42294717 = fieldWeight in 841, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.9070187 = idf(docFreq=2415, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.10185932 = weight(abstract_txt:assigned in 841) [ClassicSimilarity], result of:
           0.10185932 = score(doc=841,freq=2.0), product of:
             0.18768659 = queryWeight, product of:
               1.7009532 = boost
               6.140059 = idf(docFreq=258, maxDocs=44218)
               0.017970838 = queryNorm
             0.54270965 = fieldWeight in 841, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.140059 = idf(docFreq=258, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
         0.15014187 = weight(abstract_txt:thesaurus in 841) [ClassicSimilarity], result of:
           0.15014187 = score(doc=841,freq=1.0), product of:
             0.4650146 = queryWeight, product of:
               5.0089083 = boost
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.017970838 = queryNorm
             0.3228756 = fieldWeight in 841, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.0625 = fieldNorm(doc=841)
       0.36 = coord(9/25)
   

4. Frâncu, V.: ¬A universal classification system going through changes (2001) 0.18

   0.18254104 = sum of:
     0.18254104 = product of:
       0.57044077 = sum of:
         0.0153811565 = weight(abstract_txt:were in 1593) [ClassicSimilarity], result of:
           0.0153811565 = score(doc=1593,freq=1.0), product of:
             0.06705565 = queryWeight, product of:
               1.0167015 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.017970838 = queryNorm
             0.22937898 = fieldWeight in 1593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
         0.039590802 = weight(abstract_txt:classification in 1593) [ClassicSimilarity], result of:
           0.039590802 = score(doc=1593,freq=4.0), product of:
             0.07933879 = queryWeight, product of:
               1.1059068 = boost
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.017970838 = queryNorm
             0.4990094 = fieldWeight in 1593, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.9920752 = idf(docFreq=2218, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
         0.019708255 = weight(abstract_txt:from in 1593) [ClassicSimilarity], result of:
           0.019708255 = score(doc=1593,freq=4.0), product of:
             0.057045132 = queryWeight, product of:
               1.1484991 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.017970838 = queryNorm
             0.34548533 = fieldWeight in 1593, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
         0.05725288 = weight(abstract_txt:indexing in 1593) [ClassicSimilarity], result of:
           0.05725288 = score(doc=1593,freq=5.0), product of:
             0.094185546 = queryWeight, product of:
               1.2049469 = boost
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.017970838 = queryNorm
             0.6078733 = fieldWeight in 1593, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
         0.011580871 = weight(abstract_txt:which in 1593) [ClassicSimilarity], result of:
           0.011580871 = score(doc=1593,freq=1.0), product of:
             0.06352831 = queryWeight, product of:
               1.2120067 = boost
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.017970838 = queryNorm
             0.18229467 = fieldWeight in 1593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
         0.017693164 = weight(abstract_txt:used in 1593) [ClassicSimilarity], result of:
           0.017693164 = score(doc=1593,freq=1.0), product of:
             0.08427074 = queryWeight, product of:
               1.3959177 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.017970838 = queryNorm
             0.2099562 = fieldWeight in 1593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
         0.14918031 = weight(abstract_txt:codes in 1593) [ClassicSimilarity], result of:
           0.14918031 = score(doc=1593,freq=1.0), product of:
             0.38423216 = queryWeight, product of:
               3.4418156 = boost
               6.2120905 = idf(docFreq=240, maxDocs=44218)
               0.017970838 = queryNorm
             0.38825566 = fieldWeight in 1593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2120905 = idf(docFreq=240, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
         0.26005334 = weight(abstract_txt:thesaurus in 1593) [ClassicSimilarity], result of:
           0.26005334 = score(doc=1593,freq=3.0), product of:
             0.4650146 = queryWeight, product of:
               5.0089083 = boost
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.017970838 = queryNorm
             0.55923694 = fieldWeight in 1593, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.0625 = fieldNorm(doc=1593)
       0.32 = coord(8/25)
   

5. Srinivasan, P.: Thesaurus construction (1992) 0.18

   0.17982267 = sum of:
     0.17982267 = product of:
       0.64222383 = sum of:
         0.019226447 = weight(abstract_txt:were in 3504) [ClassicSimilarity], result of:
           0.019226447 = score(doc=3504,freq=1.0), product of:
             0.06705565 = queryWeight, product of:
               1.0167015 = boost
               3.6700637 = idf(docFreq=3061, maxDocs=44218)
               0.017970838 = queryNorm
             0.28672373 = fieldWeight in 3504, 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=3504)
         0.02717515 = weight(abstract_txt:each in 3504) [ClassicSimilarity], result of:
           0.02717515 = score(doc=3504,freq=1.0), product of:
             0.08445344 = queryWeight, product of:
               1.1409968 = boost
               4.118742 = idf(docFreq=1954, maxDocs=44218)
               0.017970838 = queryNorm
             0.32177672 = fieldWeight in 3504, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.118742 = idf(docFreq=1954, maxDocs=44218)
               0.078125 = fieldNorm(doc=3504)
         0.017419802 = weight(abstract_txt:from in 3504) [ClassicSimilarity], result of:
           0.017419802 = score(doc=3504,freq=2.0), product of:
             0.057045132 = queryWeight, product of:
               1.1484991 = boost
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.017970838 = queryNorm
             0.30536878 = fieldWeight in 3504, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.7638826 = idf(docFreq=7577, maxDocs=44218)
               0.078125 = fieldNorm(doc=3504)
         0.045262378 = weight(abstract_txt:indexing in 3504) [ClassicSimilarity], result of:
           0.045262378 = score(doc=3504,freq=2.0), product of:
             0.094185546 = queryWeight, product of:
               1.2049469 = boost
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.017970838 = queryNorm
             0.48056605 = fieldWeight in 3504, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3495874 = idf(docFreq=1551, maxDocs=44218)
               0.078125 = fieldNorm(doc=3504)
         0.01447609 = weight(abstract_txt:which in 3504) [ClassicSimilarity], result of:
           0.01447609 = score(doc=3504,freq=1.0), product of:
             0.06352831 = queryWeight, product of:
               1.2120067 = boost
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.017970838 = queryNorm
             0.22786833 = fieldWeight in 3504, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.9167147 = idf(docFreq=6503, maxDocs=44218)
               0.078125 = fieldNorm(doc=3504)
         0.022116454 = weight(abstract_txt:used in 3504) [ClassicSimilarity], result of:
           0.022116454 = score(doc=3504,freq=1.0), product of:
             0.08427074 = queryWeight, product of:
               1.3959177 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.017970838 = queryNorm
             0.26244524 = fieldWeight in 3504, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.078125 = fieldNorm(doc=3504)
         0.4965475 = weight(abstract_txt:thesaurus in 3504) [ClassicSimilarity], result of:
           0.4965475 = score(doc=3504,freq=7.0), product of:
             0.4650146 = queryWeight, product of:
               5.0089083 = boost
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.017970838 = queryNorm
             1.0678105 = fieldWeight in 3504, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.1660094 = idf(docFreq=685, maxDocs=44218)
               0.078125 = fieldNorm(doc=3504)
       0.28 = coord(7/25)