Document (#40830)

Author

Kara, S.

Title

¬An ontology-based retrieval system using semantic indexing

Source

Information Systems. 37(2012) no. 4, S.294-305

Year

2012

Abstract

In this thesis, we present an ontology-based information extraction and retrieval system and its application to soccer domain. In general, we deal with three issues in semantic search, namely, usability, scalability and retrieval performance. We propose a keyword-based semantic retrieval approach. The performance of the system is improved considerably using domain-specific information extraction, inference and rules. Scalability is achieved by adapting a semantic indexing approach. The system is implemented using the state-of-the-art technologies in SemanticWeb and its performance is evaluated against traditional systems as well as the query expansion methods. Furthermore, a detailed evaluation is provided to observe the performance gain due to domain-specific information extraction and inference. Finally, we show how we use semantic indexing to solve simple structural ambiguities.

Content

Thesis submitted to the Graduate School of Natural and Applied Sciences of Middle East Technical University in partial fulfilment of the requirements for the degree of Master of science in Computer Engineering (XII, 57 S.)

Footnote

Vgl. auch: http://etd.lib.metu.edu.tr/upload/12612110/index.pdf.

Theme

Wissensrepräsentation
Semantic Web

Similar documents (content)

1. Vlachidis, A.; Tudhope, D.: ¬A knowledge-based approach to information extraction for semantic interoperability in the archaeology domain (2016) 0.41

   0.41428924 = sum of:
     0.41428924 = product of:
       0.94156647 = sum of:
         0.011521214 = weight(abstract_txt:information in 3895) [ClassicSimilarity], result of:
           0.011521214 = score(doc=3895,freq=2.0), product of:
             0.053887174 = queryWeight, product of:
               1.1742219 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.018972188 = queryNorm
             0.21380253 = fieldWeight in 3895, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.030632593 = weight(abstract_txt:specific in 3895) [ClassicSimilarity], result of:
           0.030632593 = score(doc=3895,freq=1.0), product of:
             0.11382963 = queryWeight, product of:
               1.3934438 = boost
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.018972188 = queryNorm
             0.26910913 = fieldWeight in 3895, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.03215371 = weight(abstract_txt:based in 3895) [ClassicSimilarity], result of:
           0.03215371 = score(doc=3895,freq=3.0), product of:
             0.09331331 = queryWeight, product of:
               1.5451806 = boost
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.018972188 = queryNorm
             0.344578 = fieldWeight in 3895, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.04118507 = weight(abstract_txt:using in 3895) [ClassicSimilarity], result of:
           0.04118507 = score(doc=3895,freq=3.0), product of:
             0.11005658 = queryWeight, product of:
               1.6780908 = boost
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.018972188 = queryNorm
             0.37421724 = fieldWeight in 3895, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.06466766 = weight(abstract_txt:ontology in 3895) [ClassicSimilarity], result of:
           0.06466766 = score(doc=3895,freq=1.0), product of:
             0.18732291 = queryWeight, product of:
               1.7875462 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.018972188 = queryNorm
             0.3452202 = fieldWeight in 3895, 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=3895)
         0.067020126 = weight(abstract_txt:indexing in 3895) [ClassicSimilarity], result of:
           0.067020126 = score(doc=3895,freq=2.0), product of:
             0.17429706 = queryWeight, product of:
               2.1117985 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.018972188 = queryNorm
             0.38451666 = fieldWeight in 3895, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.029446296 = weight(abstract_txt:system in 3895) [ClassicSimilarity], result of:
           0.029446296 = score(doc=3895,freq=1.0), product of:
             0.13968934 = queryWeight, product of:
               2.1830237 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.018972188 = queryNorm
             0.21079844 = fieldWeight in 3895, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.10542901 = weight(abstract_txt:domain in 3895) [ClassicSimilarity], result of:
           0.10542901 = score(doc=3895,freq=3.0), product of:
             0.20595053 = queryWeight, product of:
               2.2955613 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.018972188 = queryNorm
             0.51191425 = fieldWeight in 3895, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.07567048 = weight(abstract_txt:performance in 3895) [ClassicSimilarity], result of:
           0.07567048 = score(doc=3895,freq=1.0), product of:
             0.26207593 = queryWeight, product of:
               2.990132 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.018972188 = queryNorm
             0.28873494 = fieldWeight in 3895, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.2733186 = weight(abstract_txt:extraction in 3895) [ClassicSimilarity], result of:
           0.2733186 = score(doc=3895,freq=4.0), product of:
             0.3531203 = queryWeight, product of:
               3.0058603 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.018972188 = queryNorm
             0.7740099 = fieldWeight in 3895, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
         0.2105217 = weight(abstract_txt:semantic in 3895) [ClassicSimilarity], result of:
           0.2105217 = score(doc=3895,freq=6.0), product of:
             0.307322 = queryWeight, product of:
               3.6201673 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.018972188 = queryNorm
             0.68501997 = fieldWeight in 3895, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.0625 = fieldNorm(doc=3895)
       0.44 = coord(11/25)
   

2. Vlachidis, A.; Binding, C.; Tudhope, D.; May, K.: Excavating grey literature : a case study on the rich indexing of archaeological documents via natural language-processing techniques and knowledge-based resources (2010) 0.37

   0.3658452 = sum of:
     0.3658452 = product of:
       0.914613 = sum of:
         0.01821664 = weight(abstract_txt:information in 935) [ClassicSimilarity], result of:
           0.01821664 = score(doc=935,freq=5.0), product of:
             0.053887174 = queryWeight, product of:
               1.1742219 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.018972188 = queryNorm
             0.3380515 = fieldWeight in 935, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.020093322 = weight(abstract_txt:approach in 935) [ClassicSimilarity], result of:
           0.020093322 = score(doc=935,freq=1.0), product of:
             0.08593445 = queryWeight, product of:
               1.210725 = boost
               3.741144 = idf(docFreq=2864, maxDocs=44421)
               0.018972188 = queryNorm
             0.2338215 = fieldWeight in 935, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.741144 = idf(docFreq=2864, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.026253395 = weight(abstract_txt:based in 935) [ClassicSimilarity], result of:
           0.026253395 = score(doc=935,freq=2.0), product of:
             0.09331331 = queryWeight, product of:
               1.5451806 = boost
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.018972188 = queryNorm
             0.28134674 = fieldWeight in 935, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.09145387 = weight(abstract_txt:ontology in 935) [ClassicSimilarity], result of:
           0.09145387 = score(doc=935,freq=2.0), product of:
             0.18732291 = queryWeight, product of:
               1.7875462 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.018972188 = queryNorm
             0.4882151 = fieldWeight in 935, 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=935)
         0.105968125 = weight(abstract_txt:indexing in 935) [ClassicSimilarity], result of:
           0.105968125 = score(doc=935,freq=5.0), product of:
             0.17429706 = queryWeight, product of:
               2.1117985 = boost
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.018972188 = queryNorm
             0.60797423 = fieldWeight in 935, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.3503094 = idf(docFreq=1557, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.03224744 = weight(abstract_txt:retrieval in 935) [ClassicSimilarity], result of:
           0.03224744 = score(doc=935,freq=1.0), product of:
             0.14841335 = queryWeight, product of:
               2.2501595 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.018972188 = queryNorm
             0.21728125 = fieldWeight in 935, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.060869467 = weight(abstract_txt:domain in 935) [ClassicSimilarity], result of:
           0.060869467 = score(doc=935,freq=1.0), product of:
             0.20595053 = queryWeight, product of:
               2.2955613 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.018972188 = queryNorm
             0.29555383 = fieldWeight in 935, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.07567048 = weight(abstract_txt:performance in 935) [ClassicSimilarity], result of:
           0.07567048 = score(doc=935,freq=1.0), product of:
             0.26207593 = queryWeight, product of:
               2.990132 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.018972188 = queryNorm
             0.28873494 = fieldWeight in 935, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.2733186 = weight(abstract_txt:extraction in 935) [ClassicSimilarity], result of:
           0.2733186 = score(doc=935,freq=4.0), product of:
             0.3531203 = queryWeight, product of:
               3.0058603 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.018972188 = queryNorm
             0.7740099 = fieldWeight in 935, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
         0.2105217 = weight(abstract_txt:semantic in 935) [ClassicSimilarity], result of:
           0.2105217 = score(doc=935,freq=6.0), product of:
             0.307322 = queryWeight, product of:
               3.6201673 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.018972188 = queryNorm
             0.68501997 = fieldWeight in 935, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.0625 = fieldNorm(doc=935)
       0.4 = coord(10/25)
   

3. Lee, C.-Y.; Soo, V.-W.: ¬The conflict detection and resolution in knowledge merging for image annotation (2006) 0.36

   0.3635904 = sum of:
     0.3635904 = product of:
       0.90897596 = sum of:
         0.010183411 = weight(abstract_txt:information in 1981) [ClassicSimilarity], result of:
           0.010183411 = score(doc=1981,freq=1.0), product of:
             0.053887174 = queryWeight, product of:
               1.1742219 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.018972188 = queryNorm
             0.18897653 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.023204943 = weight(abstract_txt:based in 1981) [ClassicSimilarity], result of:
           0.023204943 = score(doc=1981,freq=1.0), product of:
             0.09331331 = queryWeight, product of:
               1.5451806 = boost
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.018972188 = queryNorm
             0.24867775 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.08083457 = weight(abstract_txt:ontology in 1981) [ClassicSimilarity], result of:
           0.08083457 = score(doc=1981,freq=1.0), product of:
             0.18732291 = queryWeight, product of:
               1.7875462 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.018972188 = queryNorm
             0.43152526 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.036807872 = weight(abstract_txt:system in 1981) [ClassicSimilarity], result of:
           0.036807872 = score(doc=1981,freq=1.0), product of:
             0.13968934 = queryWeight, product of:
               2.1830237 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.018972188 = queryNorm
             0.26349807 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.22420593 = weight(abstract_txt:inference in 1981) [ClassicSimilarity], result of:
           0.22420593 = score(doc=1981,freq=2.0), product of:
             0.29350412 = queryWeight, product of:
               2.2375302 = boost
               6.9139757 = idf(docFreq=119, maxDocs=44421)
               0.018972188 = queryNorm
             0.7638936 = fieldWeight in 1981, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.9139757 = idf(docFreq=119, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.040309295 = weight(abstract_txt:retrieval in 1981) [ClassicSimilarity], result of:
           0.040309295 = score(doc=1981,freq=1.0), product of:
             0.14841335 = queryWeight, product of:
               2.2501595 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.018972188 = queryNorm
             0.27160156 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.076086834 = weight(abstract_txt:domain in 1981) [ClassicSimilarity], result of:
           0.076086834 = score(doc=1981,freq=1.0), product of:
             0.20595053 = queryWeight, product of:
               2.2955613 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.018972188 = queryNorm
             0.36944228 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.09458809 = weight(abstract_txt:performance in 1981) [ClassicSimilarity], result of:
           0.09458809 = score(doc=1981,freq=1.0), product of:
             0.26207593 = queryWeight, product of:
               2.990132 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.018972188 = queryNorm
             0.36091867 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.17082413 = weight(abstract_txt:extraction in 1981) [ClassicSimilarity], result of:
           0.17082413 = score(doc=1981,freq=1.0), product of:
             0.3531203 = queryWeight, product of:
               3.0058603 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.018972188 = queryNorm
             0.48375618 = fieldWeight in 1981, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
         0.15193096 = weight(abstract_txt:semantic in 1981) [ClassicSimilarity], result of:
           0.15193096 = score(doc=1981,freq=2.0), product of:
             0.307322 = queryWeight, product of:
               3.6201673 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.018972188 = queryNorm
             0.49437058 = fieldWeight in 1981, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.078125 = fieldNorm(doc=1981)
       0.4 = coord(10/25)
   

4. Yeh, J.-F.; Wu, C.-H.; Chen, M.-J.: Ontology-based speech act identification in a bilingual dialog system using partial pattern trees (2008) 0.32

   0.31629285 = sum of:
     0.31629285 = product of:
       0.79073215 = sum of:
         0.0141105475 = weight(abstract_txt:information in 2607) [ClassicSimilarity], result of:
           0.0141105475 = score(doc=2607,freq=3.0), product of:
             0.053887174 = queryWeight, product of:
               1.1742219 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.018972188 = queryNorm
             0.26185355 = fieldWeight in 2607, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.030632593 = weight(abstract_txt:specific in 2607) [ClassicSimilarity], result of:
           0.030632593 = score(doc=2607,freq=1.0), product of:
             0.11382963 = queryWeight, product of:
               1.3934438 = boost
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.018972188 = queryNorm
             0.26910913 = fieldWeight in 2607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.041510265 = weight(abstract_txt:based in 2607) [ClassicSimilarity], result of:
           0.041510265 = score(doc=2607,freq=5.0), product of:
             0.09331331 = queryWeight, product of:
               1.5451806 = boost
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.018972188 = queryNorm
             0.4448483 = fieldWeight in 2607, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.1830752 = idf(docFreq=5005, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.03362747 = weight(abstract_txt:using in 2607) [ClassicSimilarity], result of:
           0.03362747 = score(doc=2607,freq=2.0), product of:
             0.11005658 = queryWeight, product of:
               1.6780908 = boost
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.018972188 = queryNorm
             0.3055471 = fieldWeight in 2607, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.17109454 = weight(abstract_txt:ontology in 2607) [ClassicSimilarity], result of:
           0.17109454 = score(doc=2607,freq=7.0), product of:
             0.18732291 = queryWeight, product of:
               1.7875462 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.018972188 = queryNorm
             0.9133668 = fieldWeight in 2607, 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=2607)
         0.06584392 = weight(abstract_txt:system in 2607) [ClassicSimilarity], result of:
           0.06584392 = score(doc=2607,freq=5.0), product of:
             0.13968934 = queryWeight, product of:
               2.1830237 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.018972188 = queryNorm
             0.47135964 = fieldWeight in 2607, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.03224744 = weight(abstract_txt:retrieval in 2607) [ClassicSimilarity], result of:
           0.03224744 = score(doc=2607,freq=1.0), product of:
             0.14841335 = queryWeight, product of:
               2.2501595 = boost
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.018972188 = queryNorm
             0.21728125 = fieldWeight in 2607, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4765 = idf(docFreq=3732, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.12173893 = weight(abstract_txt:domain in 2607) [ClassicSimilarity], result of:
           0.12173893 = score(doc=2607,freq=4.0), product of:
             0.20595053 = queryWeight, product of:
               2.2955613 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.018972188 = queryNorm
             0.59110767 = fieldWeight in 2607, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.13106512 = weight(abstract_txt:performance in 2607) [ClassicSimilarity], result of:
           0.13106512 = score(doc=2607,freq=3.0), product of:
             0.26207593 = queryWeight, product of:
               2.990132 = boost
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.018972188 = queryNorm
             0.5001036 = fieldWeight in 2607, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.619759 = idf(docFreq=1189, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
         0.14886132 = weight(abstract_txt:semantic in 2607) [ClassicSimilarity], result of:
           0.14886132 = score(doc=2607,freq=3.0), product of:
             0.307322 = queryWeight, product of:
               3.6201673 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.018972188 = queryNorm
             0.48438224 = fieldWeight in 2607, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.0625 = fieldNorm(doc=2607)
       0.4 = coord(10/25)
   

5. Na, J.-C.; Neoh, H.L.: Effectiveness of UMLS semantic network as a seed ontology for building a medical domain ontology (2008) 0.29

   0.28976607 = sum of:
     0.28976607 = product of:
       0.8049057 = sum of:
         0.008146728 = weight(abstract_txt:information in 2910) [ClassicSimilarity], result of:
           0.008146728 = score(doc=2910,freq=1.0), product of:
             0.053887174 = queryWeight, product of:
               1.1742219 = boost
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.018972188 = queryNorm
             0.15118122 = fieldWeight in 2910, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4188995 = idf(docFreq=10748, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.028416248 = weight(abstract_txt:approach in 2910) [ClassicSimilarity], result of:
           0.028416248 = score(doc=2910,freq=2.0), product of:
             0.08593445 = queryWeight, product of:
               1.210725 = boost
               3.741144 = idf(docFreq=2864, maxDocs=44421)
               0.018972188 = queryNorm
             0.33067352 = fieldWeight in 2910, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.741144 = idf(docFreq=2864, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.030632593 = weight(abstract_txt:specific in 2910) [ClassicSimilarity], result of:
           0.030632593 = score(doc=2910,freq=1.0), product of:
             0.11382963 = queryWeight, product of:
               1.3934438 = boost
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.018972188 = queryNorm
             0.26910913 = fieldWeight in 2910, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.305746 = idf(docFreq=1628, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.03362747 = weight(abstract_txt:using in 2910) [ClassicSimilarity], result of:
           0.03362747 = score(doc=2910,freq=2.0), product of:
             0.11005658 = queryWeight, product of:
               1.6780908 = boost
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.018972188 = queryNorm
             0.3055471 = fieldWeight in 2910, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4568708 = idf(docFreq=3806, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.15840276 = weight(abstract_txt:ontology in 2910) [ClassicSimilarity], result of:
           0.15840276 = score(doc=2910,freq=6.0), product of:
             0.18732291 = queryWeight, product of:
               1.7875462 = boost
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.018972188 = queryNorm
             0.84561336 = fieldWeight in 2910, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.5235233 = idf(docFreq=481, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.029446296 = weight(abstract_txt:system in 2910) [ClassicSimilarity], result of:
           0.029446296 = score(doc=2910,freq=1.0), product of:
             0.13968934 = queryWeight, product of:
               2.1830237 = boost
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.018972188 = queryNorm
             0.21079844 = fieldWeight in 2910, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.372775 = idf(docFreq=4140, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.12173893 = weight(abstract_txt:domain in 2910) [ClassicSimilarity], result of:
           0.12173893 = score(doc=2910,freq=4.0), product of:
             0.20595053 = queryWeight, product of:
               2.2955613 = boost
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.018972188 = queryNorm
             0.59110767 = fieldWeight in 2910, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.7288613 = idf(docFreq=1066, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.1366593 = weight(abstract_txt:extraction in 2910) [ClassicSimilarity], result of:
           0.1366593 = score(doc=2910,freq=1.0), product of:
             0.3531203 = queryWeight, product of:
               3.0058603 = boost
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.018972188 = queryNorm
             0.38700494 = fieldWeight in 2910, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.192079 = idf(docFreq=246, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
         0.2578354 = weight(abstract_txt:semantic in 2910) [ClassicSimilarity], result of:
           0.2578354 = score(doc=2910,freq=9.0), product of:
             0.307322 = queryWeight, product of:
               3.6201673 = boost
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.018972188 = queryNorm
             0.8389747 = fieldWeight in 2910, product of:
               3.0 = tf(freq=9.0), with freq of:
                 9.0 = termFreq=9.0
               4.4745317 = idf(docFreq=1375, maxDocs=44421)
               0.0625 = fieldNorm(doc=2910)
       0.36 = coord(9/25)