Document (#29230)

Author

Kim, H.H.

Title

ONTOWEB: implementing an ontology-based Web retrieval system : an empirical study

Source

Journal of the American Society for Information Science and Technology. 56(2005) no.11, S.1167-1178

Year

2005

Abstract

The design and implementation of an ontology-based Web retrieval (ONTOWEB) system is described; ONTOWEB allows the semantic search of the Web resources of international organizations such as the World Bank and the Organisation for Economic Co-operation and Development (OECD). A firm's knowledge management project is introduced first, followed by a description of the ONTOWEB system's design, implementation, and evaluation. The ONTOWEB system has two components: databases and an ontology-based search engine. The ontology-based search engine is a tool used to query the information that has been loaded into the database. Last, to evaluate the system, an experiment was conducted to compare the performance of the proposed system with that of Internet search engines in terms of relevance and search time. This study shows that ontologies can be used not only to improve precision, but also to reduce the search time. Because of the expense of annotating resources, the domains that contain the most valuable knowledge, such as the medical and the business sectors, are prime areas for future ontology applications.

Footnote

Teil eines Themenschwerpunktes: Knowledge Management in Asia

Object

OntoWeb

Similar documents (content)

1. Urs, S.R.; Angrosh, M.A.: Ontology-based knowledge organization systems in digital libraries : a comparison of experiments in OWL and KAON ontologies (2006 (?)) 0.34

   0.34071004 = sum of:
     0.34071004 = product of:
       0.7098126 = sum of:
         0.023356726 = weight(abstract_txt:used in 2799) [ClassicSimilarity], result of:
           0.023356726 = score(doc=2799,freq=3.0), product of:
             0.073403135 = queryWeight, product of:
               1.0285509 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.021244189 = queryNorm
             0.31819794 = fieldWeight in 2799, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.014276862 = weight(abstract_txt:study in 2799) [ClassicSimilarity], result of:
           0.014276862 = score(doc=2799,freq=1.0), product of:
             0.07624924 = queryWeight, product of:
               1.0483016 = boost
               3.423806 = idf(docFreq=3916, maxDocs=44218)
               0.021244189 = queryNorm
             0.1872394 = fieldWeight in 2799, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.423806 = idf(docFreq=3916, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.02022219 = weight(abstract_txt:such in 2799) [ClassicSimilarity], result of:
           0.02022219 = score(doc=2799,freq=2.0), product of:
             0.07632893 = queryWeight, product of:
               1.0488492 = boost
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.021244189 = queryNorm
             0.2649348 = fieldWeight in 2799, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.0298574 = weight(abstract_txt:retrieval in 2799) [ClassicSimilarity], result of:
           0.0298574 = score(doc=2799,freq=4.0), product of:
             0.078552805 = queryWeight, product of:
               1.0640188 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.021244189 = queryNorm
             0.38009337 = fieldWeight in 2799, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.0451189 = weight(abstract_txt:knowledge in 2799) [ClassicSimilarity], result of:
           0.0451189 = score(doc=2799,freq=8.0), product of:
             0.08210243 = queryWeight, product of:
               1.0877936 = boost
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.021244189 = queryNorm
             0.549544 = fieldWeight in 2799, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.030320406 = weight(abstract_txt:design in 2799) [ClassicSimilarity], result of:
           0.030320406 = score(doc=2799,freq=2.0), product of:
             0.09999088 = queryWeight, product of:
               1.2004627 = boost
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.021244189 = queryNorm
             0.30323172 = fieldWeight in 2799, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9207718 = idf(docFreq=2382, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.009464371 = weight(abstract_txt:that in 2799) [ClassicSimilarity], result of:
           0.009464371 = score(doc=2799,freq=1.0), product of:
             0.073038444 = queryWeight, product of:
               1.4509727 = boost
               2.3694751 = idf(docFreq=11241, maxDocs=44218)
               0.021244189 = queryNorm
             0.12958068 = fieldWeight in 2799, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.3694751 = idf(docFreq=11241, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.06006741 = weight(abstract_txt:engine in 2799) [ClassicSimilarity], result of:
           0.06006741 = score(doc=2799,freq=1.0), product of:
             0.19871911 = queryWeight, product of:
               1.6923426 = boost
               5.5272765 = idf(docFreq=477, maxDocs=44218)
               0.021244189 = queryNorm
             0.30227295 = fieldWeight in 2799, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5272765 = idf(docFreq=477, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.032596853 = weight(abstract_txt:based in 2799) [ClassicSimilarity], result of:
           0.032596853 = score(doc=2799,freq=2.0), product of:
             0.13220996 = queryWeight, product of:
               1.9521607 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.021244189 = queryNorm
             0.24655369 = fieldWeight in 2799, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.034105718 = weight(abstract_txt:system in 2799) [ClassicSimilarity], result of:
           0.034105718 = score(doc=2799,freq=1.0), product of:
             0.1849319 = queryWeight, product of:
               2.581335 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.021244189 = queryNorm
             0.18442312 = fieldWeight in 2799, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.07387395 = weight(abstract_txt:search in 2799) [ClassicSimilarity], result of:
           0.07387395 = score(doc=2799,freq=2.0), product of:
             0.26111892 = queryWeight, product of:
               3.3600695 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.021244189 = queryNorm
             0.28291306 = fieldWeight in 2799, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
         0.3365518 = weight(abstract_txt:ontology in 2799) [ClassicSimilarity], result of:
           0.3365518 = score(doc=2799,freq=5.0), product of:
             0.4975518 = queryWeight, product of:
               4.234066 = boost
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.021244189 = queryNorm
             0.67641556 = fieldWeight in 2799, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.0546875 = fieldNorm(doc=2799)
       0.48 = coord(12/25)
   

2. Reimer, U.; Brockhausen, P.; Lau, T.; Reich, J.R.: Ontology-based knowledge management at work : the Swiss life case studies (2004) 0.29

   0.28696844 = sum of:
     0.28696844 = product of:
       0.71742105 = sum of:
         0.023356726 = weight(abstract_txt:used in 4411) [ClassicSimilarity], result of:
           0.023356726 = score(doc=4411,freq=3.0), product of:
             0.073403135 = queryWeight, product of:
               1.0285509 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.021244189 = queryNorm
             0.31819794 = fieldWeight in 4411, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.034971025 = weight(abstract_txt:study in 4411) [ClassicSimilarity], result of:
           0.034971025 = score(doc=4411,freq=6.0), product of:
             0.07624924 = queryWeight, product of:
               1.0483016 = boost
               3.423806 = idf(docFreq=3916, maxDocs=44218)
               0.021244189 = queryNorm
             0.45864096 = fieldWeight in 4411, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.423806 = idf(docFreq=3916, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.014299249 = weight(abstract_txt:such in 4411) [ClassicSimilarity], result of:
           0.014299249 = score(doc=4411,freq=1.0), product of:
             0.07632893 = queryWeight, product of:
               1.0488492 = boost
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.021244189 = queryNorm
             0.1873372 = fieldWeight in 4411, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.02111237 = weight(abstract_txt:retrieval in 4411) [ClassicSimilarity], result of:
           0.02111237 = score(doc=4411,freq=2.0), product of:
             0.078552805 = queryWeight, product of:
               1.0640188 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.021244189 = queryNorm
             0.26876658 = fieldWeight in 4411, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.02255945 = weight(abstract_txt:knowledge in 4411) [ClassicSimilarity], result of:
           0.02255945 = score(doc=4411,freq=2.0), product of:
             0.08210243 = queryWeight, product of:
               1.0877936 = boost
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.021244189 = queryNorm
             0.274772 = fieldWeight in 4411, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.01338464 = weight(abstract_txt:that in 4411) [ClassicSimilarity], result of:
           0.01338464 = score(doc=4411,freq=2.0), product of:
             0.073038444 = queryWeight, product of:
               1.4509727 = boost
               2.3694751 = idf(docFreq=11241, maxDocs=44218)
               0.021244189 = queryNorm
             0.18325473 = fieldWeight in 4411, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               2.3694751 = idf(docFreq=11241, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.03992283 = weight(abstract_txt:based in 4411) [ClassicSimilarity], result of:
           0.03992283 = score(doc=4411,freq=3.0), product of:
             0.13220996 = queryWeight, product of:
               1.9521607 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.021244189 = queryNorm
             0.3019654 = fieldWeight in 4411, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.04823277 = weight(abstract_txt:system in 4411) [ClassicSimilarity], result of:
           0.04823277 = score(doc=4411,freq=2.0), product of:
             0.1849319 = queryWeight, product of:
               2.581335 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.021244189 = queryNorm
             0.26081368 = fieldWeight in 4411, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.07387395 = weight(abstract_txt:search in 4411) [ClassicSimilarity], result of:
           0.07387395 = score(doc=4411,freq=2.0), product of:
             0.26111892 = queryWeight, product of:
               3.3600695 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.021244189 = queryNorm
             0.28291306 = fieldWeight in 4411, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
         0.4257081 = weight(abstract_txt:ontology in 4411) [ClassicSimilarity], result of:
           0.4257081 = score(doc=4411,freq=8.0), product of:
             0.4975518 = queryWeight, product of:
               4.234066 = boost
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.021244189 = queryNorm
             0.85560554 = fieldWeight in 4411, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.0546875 = fieldNorm(doc=4411)
       0.4 = coord(10/25)
   

3. Mäkelä, E.; Hyvönen, E.; Saarela, S.; Vilfanen, K.: Application of ontology techniques to view-based semantic serach and browsing (2012) 0.28

   0.27607217 = sum of:
     0.27607217 = product of:
       0.7668671 = sum of:
         0.021795072 = weight(abstract_txt:used in 3264) [ClassicSimilarity], result of:
           0.021795072 = score(doc=3264,freq=2.0), product of:
             0.073403135 = queryWeight, product of:
               1.0285509 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.021244189 = queryNorm
             0.2969229 = fieldWeight in 3264, 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=3264)
         0.024128422 = weight(abstract_txt:retrieval in 3264) [ClassicSimilarity], result of:
           0.024128422 = score(doc=3264,freq=2.0), product of:
             0.078552805 = queryWeight, product of:
               1.0640188 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.021244189 = queryNorm
             0.3071618 = fieldWeight in 3264, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
         0.030609947 = weight(abstract_txt:resources in 3264) [ClassicSimilarity], result of:
           0.030609947 = score(doc=3264,freq=1.0), product of:
             0.11598294 = queryWeight, product of:
               1.2929018 = boost
               4.2226825 = idf(docFreq=1761, maxDocs=44218)
               0.021244189 = queryNorm
             0.26391765 = fieldWeight in 3264, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.2226825 = idf(docFreq=1761, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
         0.1388288 = weight(abstract_txt:annotating in 3264) [ClassicSimilarity], result of:
           0.1388288 = score(doc=3264,freq=1.0), product of:
             0.25222924 = queryWeight, product of:
               1.3481903 = boost
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.021244189 = queryNorm
             0.55040723 = fieldWeight in 3264, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.806516 = idf(docFreq=17, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
         0.068648465 = weight(abstract_txt:engine in 3264) [ClassicSimilarity], result of:
           0.068648465 = score(doc=3264,freq=1.0), product of:
             0.19871911 = queryWeight, product of:
               1.6923426 = boost
               5.5272765 = idf(docFreq=477, maxDocs=44218)
               0.021244189 = queryNorm
             0.34545478 = fieldWeight in 3264, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.5272765 = idf(docFreq=477, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
         0.052684475 = weight(abstract_txt:based in 3264) [ClassicSimilarity], result of:
           0.052684475 = score(doc=3264,freq=4.0), product of:
             0.13220996 = queryWeight, product of:
               1.9521607 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.021244189 = queryNorm
             0.39849097 = fieldWeight in 3264, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
         0.06751181 = weight(abstract_txt:system in 3264) [ClassicSimilarity], result of:
           0.06751181 = score(doc=3264,freq=3.0), product of:
             0.1849319 = queryWeight, product of:
               2.581335 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.021244189 = queryNorm
             0.3650631 = fieldWeight in 3264, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
         0.11939834 = weight(abstract_txt:search in 3264) [ClassicSimilarity], result of:
           0.11939834 = score(doc=3264,freq=4.0), product of:
             0.26111892 = queryWeight, product of:
               3.3600695 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.021244189 = queryNorm
             0.45725656 = fieldWeight in 3264, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
         0.24326175 = weight(abstract_txt:ontology in 3264) [ClassicSimilarity], result of:
           0.24326175 = score(doc=3264,freq=2.0), product of:
             0.4975518 = queryWeight, product of:
               4.234066 = boost
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.021244189 = queryNorm
             0.48891744 = fieldWeight in 3264, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.0625 = fieldNorm(doc=3264)
       0.36 = coord(9/25)
   

4. Naskar, D.; Das, S.: HNS ontology using faceted approach (2019) 0.26

   0.25672442 = sum of:
     0.25672442 = product of:
       0.7131233 = sum of:
         0.015411443 = weight(abstract_txt:used in 5267) [ClassicSimilarity], result of:
           0.015411443 = score(doc=5267,freq=1.0), product of:
             0.073403135 = queryWeight, product of:
               1.0285509 = boost
               3.3592992 = idf(docFreq=4177, maxDocs=44218)
               0.021244189 = queryNorm
             0.2099562 = fieldWeight in 5267, 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=5267)
         0.023074893 = weight(abstract_txt:study in 5267) [ClassicSimilarity], result of:
           0.023074893 = score(doc=5267,freq=2.0), product of:
             0.07624924 = queryWeight, product of:
               1.0483016 = boost
               3.423806 = idf(docFreq=3916, maxDocs=44218)
               0.021244189 = queryNorm
             0.30262455 = fieldWeight in 5267, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.423806 = idf(docFreq=3916, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.016342 = weight(abstract_txt:such in 5267) [ClassicSimilarity], result of:
           0.016342 = score(doc=5267,freq=1.0), product of:
             0.07632893 = queryWeight, product of:
               1.0488492 = boost
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.021244189 = queryNorm
             0.21409966 = fieldWeight in 5267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.018734595 = weight(abstract_txt:that in 5267) [ClassicSimilarity], result of:
           0.018734595 = score(doc=5267,freq=3.0), product of:
             0.073038444 = queryWeight, product of:
               1.4509727 = boost
               2.3694751 = idf(docFreq=11241, maxDocs=44218)
               0.021244189 = queryNorm
             0.2565032 = fieldWeight in 5267, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               2.3694751 = idf(docFreq=11241, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.057770185 = weight(abstract_txt:implementation in 5267) [ClassicSimilarity], result of:
           0.057770185 = score(doc=5267,freq=1.0), product of:
             0.17712842 = queryWeight, product of:
               1.5977639 = boost
               5.2183776 = idf(docFreq=650, maxDocs=44218)
               0.021244189 = queryNorm
             0.3261486 = fieldWeight in 5267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.2183776 = idf(docFreq=650, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.045626093 = weight(abstract_txt:based in 5267) [ClassicSimilarity], result of:
           0.045626093 = score(doc=5267,freq=3.0), product of:
             0.13220996 = queryWeight, product of:
               1.9521607 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.021244189 = queryNorm
             0.3451033 = fieldWeight in 5267, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.05512317 = weight(abstract_txt:system in 5267) [ClassicSimilarity], result of:
           0.05512317 = score(doc=5267,freq=2.0), product of:
             0.1849319 = queryWeight, product of:
               2.581335 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.021244189 = queryNorm
             0.2980728 = fieldWeight in 5267, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.05969917 = weight(abstract_txt:search in 5267) [ClassicSimilarity], result of:
           0.05969917 = score(doc=5267,freq=1.0), product of:
             0.26111892 = queryWeight, product of:
               3.3600695 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.021244189 = queryNorm
             0.22862828 = fieldWeight in 5267, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
         0.42134175 = weight(abstract_txt:ontology in 5267) [ClassicSimilarity], result of:
           0.42134175 = score(doc=5267,freq=6.0), product of:
             0.4975518 = queryWeight, product of:
               4.234066 = boost
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.021244189 = queryNorm
             0.8468299 = fieldWeight in 5267, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.0625 = fieldNorm(doc=5267)
       0.36 = coord(9/25)
   

5. Paralic, J.; Kostial, I.: Ontology-based information retrieval (2003) 0.25

   0.25414237 = sum of:
     0.25414237 = product of:
       0.79419494 = sum of:
         0.020427499 = weight(abstract_txt:such in 1153) [ClassicSimilarity], result of:
           0.020427499 = score(doc=1153,freq=1.0), product of:
             0.07632893 = queryWeight, product of:
               1.0488492 = boost
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.021244189 = queryNorm
             0.2676246 = fieldWeight in 1153, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4255946 = idf(docFreq=3909, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
         0.042653427 = weight(abstract_txt:retrieval in 1153) [ClassicSimilarity], result of:
           0.042653427 = score(doc=1153,freq=4.0), product of:
             0.078552805 = queryWeight, product of:
               1.0640188 = boost
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.021244189 = queryNorm
             0.5429905 = fieldWeight in 1153, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.4751394 = idf(docFreq=3720, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
         0.022788484 = weight(abstract_txt:knowledge in 1153) [ClassicSimilarity], result of:
           0.022788484 = score(doc=1153,freq=1.0), product of:
             0.08210243 = queryWeight, product of:
               1.0877936 = boost
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.021244189 = queryNorm
             0.2775616 = fieldWeight in 1153, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5527887 = idf(docFreq=3442, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
         0.05411125 = weight(abstract_txt:resources in 1153) [ClassicSimilarity], result of:
           0.05411125 = score(doc=1153,freq=2.0), product of:
             0.11598294 = queryWeight, product of:
               1.2929018 = boost
               4.2226825 = idf(docFreq=1761, maxDocs=44218)
               0.021244189 = queryNorm
             0.4665449 = fieldWeight in 1153, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.2226825 = idf(docFreq=1761, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
         0.080656305 = weight(abstract_txt:based in 1153) [ClassicSimilarity], result of:
           0.080656305 = score(doc=1153,freq=6.0), product of:
             0.13220996 = queryWeight, product of:
               1.9521607 = boost
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.021244189 = queryNorm
             0.61006224 = fieldWeight in 1153, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.1879277 = idf(docFreq=4958, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
         0.06890396 = weight(abstract_txt:system in 1153) [ClassicSimilarity], result of:
           0.06890396 = score(doc=1153,freq=2.0), product of:
             0.1849319 = queryWeight, product of:
               2.581335 = boost
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.021244189 = queryNorm
             0.372591 = fieldWeight in 1153, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.3723085 = idf(docFreq=4123, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
         0.07462396 = weight(abstract_txt:search in 1153) [ClassicSimilarity], result of:
           0.07462396 = score(doc=1153,freq=1.0), product of:
             0.26111892 = queryWeight, product of:
               3.3600695 = boost
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.021244189 = queryNorm
             0.28578535 = fieldWeight in 1153, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6580524 = idf(docFreq=3098, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
         0.43003008 = weight(abstract_txt:ontology in 1153) [ClassicSimilarity], result of:
           0.43003008 = score(doc=1153,freq=4.0), product of:
             0.4975518 = queryWeight, product of:
               4.234066 = boost
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.021244189 = queryNorm
             0.8642921 = fieldWeight in 1153, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.5314693 = idf(docFreq=475, maxDocs=44218)
               0.078125 = fieldNorm(doc=1153)
       0.32 = coord(8/25)