Document (#37476)

Author

Bozzato, L.
Braghin, S.
Trombetta, A.

Title

¬A method and guidelines for the cooperation of ontologies and relational databases in Semantic Web applications

Source

Proceedings of the 2nd International Workshop on Semantic Digital Archives held in conjunction with the 16th Int. Conference on Theory and Practice of Digital Libraries (TPDL) on September 27, 2012 in Paphos, Cyprus [http://ceur-ws.org/Vol-912/proceedings.pdf]. Eds.: A. Mitschik et al

Year

2012

Pages

S.73-84

Abstract

Ontologies are a well-affirmed way of representing complex structured information and they provide a sound conceptual foundation to Semantic Web technologies. On the other hand, a huge amount of information available on the web is stored in legacy relational databases. The issues raised by the collaboration between such worlds are well known and addressed by consolidated mapping languages. Nevertheless, to the best of our knowledge, a best practice for such cooperation is missing: in this work we thus present a method to guide the definition of cooperations between ontology-based and relational databases systems. Our method, mainly based on ideas from knowledge reuse and re-engineering, is aimed at the separation of data between database and ontology instances and at the definition of suitable mappings in both directions, taking advantage of the representation possibilities offered by both models. We present the steps of our method along with guidelines for their application. Finally, we propose an example of its deployment in the context of a large repository of bio-medical images we developed.

Content

Vgl. auch: http://sda2012.dke-research.de.

Similar documents (content)

1. Herre, H.: Formal ontology and the foundation of knowledge organization (2013) 0.21

   0.21063718 = sum of:
     0.21063718 = product of:
       0.5851033 = sum of:
         0.04380791 = weight(abstract_txt:knowledge in 1776) [ClassicSimilarity], result of:
           0.04380791 = score(doc=1776,freq=6.0), product of:
             0.08068821 = queryWeight, product of:
               1.0091264 = boost
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.022546425 = queryNorm
             0.5429283 = fieldWeight in 1776, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.022107195 = weight(abstract_txt:both in 1776) [ClassicSimilarity], result of:
           0.022107195 = score(doc=1776,freq=1.0), product of:
             0.09293541 = queryWeight, product of:
               1.0830067 = boost
               3.8060317 = idf(docFreq=2684, maxDocs=44421)
               0.022546425 = queryNorm
             0.23787698 = fieldWeight in 1776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8060317 = idf(docFreq=2684, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.03291044 = weight(abstract_txt:present in 1776) [ClassicSimilarity], result of:
           0.03291044 = score(doc=1776,freq=1.0), product of:
             0.12116614 = queryWeight, product of:
               1.2366055 = boost
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.022546425 = queryNorm
             0.27161416 = fieldWeight in 1776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.035921894 = weight(abstract_txt:semantic in 1776) [ClassicSimilarity], result of:
           0.035921894 = score(doc=1776,freq=1.0), product of:
             0.12844926 = queryWeight, product of:
               1.2732285 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.022546425 = queryNorm
             0.27965823 = fieldWeight in 1776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.035153635 = weight(abstract_txt:between in 1776) [ClassicSimilarity], result of:
           0.035153635 = score(doc=1776,freq=2.0), product of:
             0.115033954 = queryWeight, product of:
               1.4757037 = boost
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.022546425 = queryNorm
             0.30559355 = fieldWeight in 1776, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.17877801 = weight(abstract_txt:ontology in 1776) [ClassicSimilarity], result of:
           0.17877801 = score(doc=1776,freq=7.0), product of:
             0.19573517 = queryWeight, product of:
               1.5717192 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.022546425 = queryNorm
             0.9133668 = fieldWeight in 1776, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.11168251 = weight(abstract_txt:ontologies in 1776) [ClassicSimilarity], result of:
           0.11168251 = score(doc=1776,freq=2.0), product of:
             0.21717289 = queryWeight, product of:
               1.6555539 = boost
               5.8181453 = idf(docFreq=358, maxDocs=44421)
               0.022546425 = queryNorm
             0.51425624 = fieldWeight in 1776, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.8181453 = idf(docFreq=358, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.05172224 = weight(abstract_txt:databases in 1776) [ClassicSimilarity], result of:
           0.05172224 = score(doc=1776,freq=1.0), product of:
             0.18748827 = queryWeight, product of:
               1.8839667 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.022546425 = queryNorm
             0.2758692 = fieldWeight in 1776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
         0.07301942 = weight(abstract_txt:method in 1776) [ClassicSimilarity], result of:
           0.07301942 = score(doc=1776,freq=1.0), product of:
             0.2596935 = queryWeight, product of:
               2.5602717 = boost
               4.4988065 = idf(docFreq=1342, maxDocs=44421)
               0.022546425 = queryNorm
             0.2811754 = fieldWeight in 1776, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4988065 = idf(docFreq=1342, maxDocs=44421)
               0.0625 = fieldNorm(doc=1776)
       0.36 = coord(9/25)
   

2. Kless, D.; Lindenthal, J.; Milton, S.; Kazmierczak, E.: Interoperability of knowledge organization systems with and through ontologies (2011) 0.19

   0.19491109 = sum of:
     0.19491109 = product of:
       0.6090972 = sum of:
         0.025292508 = weight(abstract_txt:knowledge in 814) [ClassicSimilarity], result of:
           0.025292508 = score(doc=814,freq=2.0), product of:
             0.08068821 = queryWeight, product of:
               1.0091264 = boost
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.022546425 = queryNorm
             0.31345978 = fieldWeight in 814, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
         0.10844234 = weight(abstract_txt:mappings in 814) [ClassicSimilarity], result of:
           0.10844234 = score(doc=814,freq=2.0), product of:
             0.16901998 = queryWeight, product of:
               1.0327485 = boost
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.022546425 = queryNorm
             0.64159477 = fieldWeight in 814, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
         0.022107195 = weight(abstract_txt:both in 814) [ClassicSimilarity], result of:
           0.022107195 = score(doc=814,freq=1.0), product of:
             0.09293541 = queryWeight, product of:
               1.0830067 = boost
               3.8060317 = idf(docFreq=2684, maxDocs=44421)
               0.022546425 = queryNorm
             0.23787698 = fieldWeight in 814, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.8060317 = idf(docFreq=2684, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
         0.02383179 = weight(abstract_txt:well in 814) [ClassicSimilarity], result of:
           0.02383179 = score(doc=814,freq=1.0), product of:
             0.09770796 = queryWeight, product of:
               1.1104666 = boost
               3.9025342 = idf(docFreq=2437, maxDocs=44421)
               0.022546425 = queryNorm
             0.24390839 = fieldWeight in 814, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9025342 = idf(docFreq=2437, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
         0.035153635 = weight(abstract_txt:between in 814) [ClassicSimilarity], result of:
           0.035153635 = score(doc=814,freq=2.0), product of:
             0.115033954 = queryWeight, product of:
               1.4757037 = boost
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.022546425 = queryNorm
             0.30559355 = fieldWeight in 814, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
         0.09556086 = weight(abstract_txt:ontology in 814) [ClassicSimilarity], result of:
           0.09556086 = score(doc=814,freq=2.0), product of:
             0.19573517 = queryWeight, product of:
               1.5717192 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.022546425 = queryNorm
             0.4882151 = fieldWeight in 814, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
         0.07534383 = weight(abstract_txt:guidelines in 814) [ClassicSimilarity], result of:
           0.07534383 = score(doc=814,freq=1.0), product of:
             0.2104702 = queryWeight, product of:
               1.6298057 = boost
               5.727658 = idf(docFreq=392, maxDocs=44421)
               0.022546425 = queryNorm
             0.3579786 = fieldWeight in 814, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.727658 = idf(docFreq=392, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
         0.22336502 = weight(abstract_txt:ontologies in 814) [ClassicSimilarity], result of:
           0.22336502 = score(doc=814,freq=8.0), product of:
             0.21717289 = queryWeight, product of:
               1.6555539 = boost
               5.8181453 = idf(docFreq=358, maxDocs=44421)
               0.022546425 = queryNorm
             1.0285125 = fieldWeight in 814, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               5.8181453 = idf(docFreq=358, maxDocs=44421)
               0.0625 = fieldNorm(doc=814)
       0.32 = coord(8/25)
   

3. Sequeda, J.F.: Integrating relational databases with the Semantic Web : a reflection (2017) 0.18

   0.18059397 = sum of:
     0.18059397 = product of:
       0.90296984 = sum of:
         0.09585039 = weight(abstract_txt:mappings in 4935) [ClassicSimilarity], result of:
           0.09585039 = score(doc=4935,freq=1.0), product of:
             0.16901998 = queryWeight, product of:
               1.0327485 = boost
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.022546425 = queryNorm
             0.56709504 = fieldWeight in 4935, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.2588162 = idf(docFreq=84, maxDocs=44421)
               0.078125 = fieldNorm(doc=4935)
         0.04113805 = weight(abstract_txt:present in 4935) [ClassicSimilarity], result of:
           0.04113805 = score(doc=4935,freq=1.0), product of:
             0.12116614 = queryWeight, product of:
               1.2366055 = boost
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.022546425 = queryNorm
             0.3395177 = fieldWeight in 4935, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.078125 = fieldNorm(doc=4935)
         0.109987885 = weight(abstract_txt:semantic in 4935) [ClassicSimilarity], result of:
           0.109987885 = score(doc=4935,freq=6.0), product of:
             0.12844926 = queryWeight, product of:
               1.2732285 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.022546425 = queryNorm
             0.85627496 = fieldWeight in 4935, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.078125 = fieldNorm(doc=4935)
         0.15836637 = weight(abstract_txt:databases in 4935) [ClassicSimilarity], result of:
           0.15836637 = score(doc=4935,freq=6.0), product of:
             0.18748827 = queryWeight, product of:
               1.8839667 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.022546425 = queryNorm
             0.84467345 = fieldWeight in 4935, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.078125 = fieldNorm(doc=4935)
         0.49762717 = weight(abstract_txt:relational in 4935) [ClassicSimilarity], result of:
           0.49762717 = score(doc=4935,freq=6.0), product of:
             0.40222418 = queryWeight, product of:
               2.7594357 = boost
               6.4650254 = idf(docFreq=187, maxDocs=44421)
               0.022546425 = queryNorm
             1.2371886 = fieldWeight in 4935, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               6.4650254 = idf(docFreq=187, maxDocs=44421)
               0.078125 = fieldNorm(doc=4935)
       0.2 = coord(5/25)
   

4. Saruladha, K.; Aghila, G.; Penchala, S.K.: Design of new indexing techniques based on ontology for information retrieval systems (2010) 0.17

   0.16918927 = sum of:
     0.16918927 = product of:
       0.5287165 = sum of:
         0.02383179 = weight(abstract_txt:well in 317) [ClassicSimilarity], result of:
           0.02383179 = score(doc=317,freq=1.0), product of:
             0.09770796 = queryWeight, product of:
               1.1104666 = boost
               3.9025342 = idf(docFreq=2437, maxDocs=44421)
               0.022546425 = queryNorm
             0.24390839 = fieldWeight in 317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9025342 = idf(docFreq=2437, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
         0.035921894 = weight(abstract_txt:semantic in 317) [ClassicSimilarity], result of:
           0.035921894 = score(doc=317,freq=1.0), product of:
             0.12844926 = queryWeight, product of:
               1.2732285 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.022546425 = queryNorm
             0.27965823 = fieldWeight in 317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
         0.035153635 = weight(abstract_txt:between in 317) [ClassicSimilarity], result of:
           0.035153635 = score(doc=317,freq=2.0), product of:
             0.115033954 = queryWeight, product of:
               1.4757037 = boost
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.022546425 = queryNorm
             0.30559355 = fieldWeight in 317, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
         0.06757174 = weight(abstract_txt:ontology in 317) [ClassicSimilarity], result of:
           0.06757174 = score(doc=317,freq=1.0), product of:
             0.19573517 = queryWeight, product of:
               1.5717192 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.022546425 = queryNorm
             0.3452202 = fieldWeight in 317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
         0.07897147 = weight(abstract_txt:ontologies in 317) [ClassicSimilarity], result of:
           0.07897147 = score(doc=317,freq=1.0), product of:
             0.21717289 = queryWeight, product of:
               1.6555539 = boost
               5.8181453 = idf(docFreq=358, maxDocs=44421)
               0.022546425 = queryNorm
             0.36363408 = fieldWeight in 317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.8181453 = idf(docFreq=358, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
         0.05172224 = weight(abstract_txt:databases in 317) [ClassicSimilarity], result of:
           0.05172224 = score(doc=317,freq=1.0), product of:
             0.18748827 = queryWeight, product of:
               1.8839667 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.022546425 = queryNorm
             0.2758692 = fieldWeight in 317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
         0.07301942 = weight(abstract_txt:method in 317) [ClassicSimilarity], result of:
           0.07301942 = score(doc=317,freq=1.0), product of:
             0.2596935 = queryWeight, product of:
               2.5602717 = boost
               4.4988065 = idf(docFreq=1342, maxDocs=44421)
               0.022546425 = queryNorm
             0.2811754 = fieldWeight in 317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4988065 = idf(docFreq=1342, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
         0.16252434 = weight(abstract_txt:relational in 317) [ClassicSimilarity], result of:
           0.16252434 = score(doc=317,freq=1.0), product of:
             0.40222418 = queryWeight, product of:
               2.7594357 = boost
               6.4650254 = idf(docFreq=187, maxDocs=44421)
               0.022546425 = queryNorm
             0.4040641 = fieldWeight in 317, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4650254 = idf(docFreq=187, maxDocs=44421)
               0.0625 = fieldNorm(doc=317)
       0.32 = coord(8/25)
   

5. Robbio, A. de; Maguolo, D.; Marini, A.: Scientific and general subject classifications in the digital world (2001) 0.15

   0.14851339 = sum of:
     0.14851339 = product of:
       0.46410435 = sum of:
         0.015648942 = weight(abstract_txt:knowledge in 1002) [ClassicSimilarity], result of:
           0.015648942 = score(doc=1002,freq=1.0), product of:
             0.08068821 = queryWeight, product of:
               1.0091264 = boost
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.022546425 = queryNorm
             0.19394335 = fieldWeight in 1002, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5463927 = idf(docFreq=3480, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
         0.020852817 = weight(abstract_txt:well in 1002) [ClassicSimilarity], result of:
           0.020852817 = score(doc=1002,freq=1.0), product of:
             0.09770796 = queryWeight, product of:
               1.1104666 = boost
               3.9025342 = idf(docFreq=2437, maxDocs=44421)
               0.022546425 = queryNorm
             0.21341984 = fieldWeight in 1002, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9025342 = idf(docFreq=2437, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
         0.04072459 = weight(abstract_txt:present in 1002) [ClassicSimilarity], result of:
           0.04072459 = score(doc=1002,freq=2.0), product of:
             0.12116614 = queryWeight, product of:
               1.2366055 = boost
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.022546425 = queryNorm
             0.33610538 = fieldWeight in 1002, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3458266 = idf(docFreq=1564, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
         0.021750202 = weight(abstract_txt:between in 1002) [ClassicSimilarity], result of:
           0.021750202 = score(doc=1002,freq=1.0), product of:
             0.115033954 = queryWeight, product of:
               1.4757037 = boost
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.022546425 = queryNorm
             0.18907636 = fieldWeight in 1002, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4573963 = idf(docFreq=3804, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
         0.087305084 = weight(abstract_txt:cooperation in 1002) [ClassicSimilarity], result of:
           0.087305084 = score(doc=1002,freq=1.0), product of:
             0.25381258 = queryWeight, product of:
               1.7897695 = boost
               6.2898216 = idf(docFreq=223, maxDocs=44421)
               0.022546425 = queryNorm
             0.34397462 = fieldWeight in 1002, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2898216 = idf(docFreq=223, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
         0.04525696 = weight(abstract_txt:databases in 1002) [ClassicSimilarity], result of:
           0.04525696 = score(doc=1002,freq=1.0), product of:
             0.18748827 = queryWeight, product of:
               1.8839667 = boost
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.022546425 = queryNorm
             0.24138555 = fieldWeight in 1002, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.413907 = idf(docFreq=1461, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
         0.09035693 = weight(abstract_txt:method in 1002) [ClassicSimilarity], result of:
           0.09035693 = score(doc=1002,freq=2.0), product of:
             0.2596935 = queryWeight, product of:
               2.5602717 = boost
               4.4988065 = idf(docFreq=1342, maxDocs=44421)
               0.022546425 = queryNorm
             0.3479368 = fieldWeight in 1002, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4988065 = idf(docFreq=1342, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
         0.1422088 = weight(abstract_txt:relational in 1002) [ClassicSimilarity], result of:
           0.1422088 = score(doc=1002,freq=1.0), product of:
             0.40222418 = queryWeight, product of:
               2.7594357 = boost
               6.4650254 = idf(docFreq=187, maxDocs=44421)
               0.022546425 = queryNorm
             0.35355607 = fieldWeight in 1002, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4650254 = idf(docFreq=187, maxDocs=44421)
               0.0546875 = fieldNorm(doc=1002)
       0.32 = coord(8/25)