Document (#37700)

Author
Sy, M.-F.
Ranwez, S.
Montmain, J.
Ragnault, A.
Crampes, M.
Ranwez, V.
Title
User centered and ontology based information retrieval system for life sciences
Source
BMC bioinformatics. 13(2012) Suppl.1, S.1-12
Year
2012
Abstract
Background: Because of the increasing number of electronic resources, designing efficient tools to retrieve and exploit them is a major challenge. Some improvements have been offered by semantic Web technologies and applications based on domain ontologies. In life science, for instance, the Gene Ontology is widely exploited in genomic applications and the Medical Subject Headings is the basis of biomedical publications indexation and information retrieval process proposed by PubMed. However current search engines suffer from two main drawbacks: there is limited user interaction with the list of retrieved resources and no explanation for their adequacy to the query is provided. Users may thus be confused by the selection and have no idea on how to adapt their queries so that the results match their expectations. Results: This paper describes an information retrieval system that relies on domain ontology to widen the set of relevant documents that is retrieved and that uses a graphical rendering of query results to favor user interactions. Semantic proximities between ontology concepts and aggregating models are used to assess documents adequacy with respect to a query. The selection of documents is displayed in a semantic map to provide graphical indications that make explicit to what extent they match the user's query; this man/machine interface favors a more interactive and iterative exploration of data corpus, by facilitating query concepts weighting and visual explanation. We illustrate the benefit of using this information retrieval system on two case studies one of which aiming at collecting human genes related to transcription factors involved in hemopoiesis pathway. Conclusions: The ontology based information retrieval system described in this paper (OBIRS) is freely available at: http://www.ontotoolkit.mines-ales.fr/ObirsClient/. This environment is a first step towards a user centred application in which the system enlightens relevant information to provide decision help.
Content
Vgl.: http://www.biomedcentral.com/content/pdf/1471-2105-13-S1-S4.pdf.
Theme
Wissensrepräsentation
Field
Biologie
Medizin
Object
OBIRS

Similar documents (content)

  1. Thenmalar, S.; Geetha, T.V.: Enhanced ontology-based indexing and searching (2014) 0.43
    0.43010038 = sum of:
      0.43010038 = product of:
        0.82711613 = sum of:
          0.031208523 = weight(abstract_txt:domain in 1633) [ClassicSimilarity], result of:
            0.031208523 = score(doc=1633,freq=2.0), product of:
              0.11929547 = queryWeight, product of:
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.025191251 = queryNorm
              0.26160693 = fieldWeight in 1633, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.037784725 = weight(abstract_txt:based in 1633) [ClassicSimilarity], result of:
            0.037784725 = score(doc=1633,freq=14.0), product of:
              0.081093065 = queryWeight, product of:
                1.0097771 = boost
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.025191251 = queryNorm
              0.46594274 = fieldWeight in 1633, product of:
                3.7416575 = tf(freq=14.0), with freq of:
                  14.0 = termFreq=14.0
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.029434457 = weight(abstract_txt:results in 1633) [ClassicSimilarity], result of:
            0.029434457 = score(doc=1633,freq=5.0), product of:
              0.096767515 = queryWeight, product of:
                1.1030582 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.025191251 = queryNorm
              0.30417705 = fieldWeight in 1633, product of:
                2.236068 = tf(freq=5.0), with freq of:
                  5.0 = termFreq=5.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.03864297 = weight(abstract_txt:retrieved in 1633) [ClassicSimilarity], result of:
            0.03864297 = score(doc=1633,freq=1.0), product of:
              0.1733134 = queryWeight, product of:
                1.2053248 = boost
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.025191251 = queryNorm
              0.22296585 = fieldWeight in 1633, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.707926 = idf(docFreq=398, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.00977343 = weight(abstract_txt:that in 1633) [ClassicSimilarity], result of:
            0.00977343 = score(doc=1633,freq=2.0), product of:
              0.07466548 = queryWeight, product of:
                1.2508867 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.025191251 = queryNorm
              0.13089624 = fieldWeight in 1633, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.012642052 = weight(abstract_txt:this in 1633) [ClassicSimilarity], result of:
            0.012642052 = score(doc=1633,freq=3.0), product of:
              0.07743485 = queryWeight, product of:
                1.2738733 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.025191251 = queryNorm
              0.16326049 = fieldWeight in 1633, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.04363755 = weight(abstract_txt:documents in 1633) [ClassicSimilarity], result of:
            0.04363755 = score(doc=1633,freq=4.0), product of:
              0.13553011 = queryWeight, product of:
                1.3054239 = boost
                4.1213026 = idf(docFreq=1949, maxDocs=44218)
                0.025191251 = queryNorm
              0.32197678 = fieldWeight in 1633, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.1213026 = idf(docFreq=1949, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.039484195 = weight(abstract_txt:semantic in 1633) [ClassicSimilarity], result of:
            0.039484195 = score(doc=1633,freq=2.0), product of:
              0.15974273 = queryWeight, product of:
                1.4172426 = boost
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.025191251 = queryNorm
              0.24717367 = fieldWeight in 1633, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.023402449 = weight(abstract_txt:information in 1633) [ClassicSimilarity], result of:
            0.023402449 = score(doc=1633,freq=7.0), product of:
              0.093533486 = queryWeight, product of:
                1.533671 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.025191251 = queryNorm
              0.25020397 = fieldWeight in 1633, product of:
                2.6457512 = tf(freq=7.0), with freq of:
                  7.0 = termFreq=7.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.028175551 = weight(abstract_txt:system in 1633) [ClassicSimilarity], result of:
            0.028175551 = score(doc=1633,freq=2.0), product of:
              0.15124118 = queryWeight, product of:
                1.7802994 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.025191251 = queryNorm
              0.1862955 = fieldWeight in 1633, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.030832391 = weight(abstract_txt:retrieval in 1633) [ClassicSimilarity], result of:
            0.030832391 = score(doc=1633,freq=2.0), product of:
              0.16060534 = queryWeight, product of:
                1.8345857 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.025191251 = queryNorm
              0.19197613 = fieldWeight in 1633, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.18509084 = weight(abstract_txt:query in 1633) [ClassicSimilarity], result of:
            0.18509084 = score(doc=1633,freq=11.0), product of:
              0.3005321 = queryWeight, product of:
                2.509594 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.025191251 = queryNorm
              0.6158771 = fieldWeight in 1633, product of:
                3.3166249 = tf(freq=11.0), with freq of:
                  11.0 = termFreq=11.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
          0.31700698 = weight(abstract_txt:ontology in 1633) [ClassicSimilarity], result of:
            0.31700698 = score(doc=1633,freq=13.0), product of:
              0.40690833 = queryWeight, product of:
                2.9201577 = boost
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.025191251 = queryNorm
              0.7790624 = fieldWeight in 1633, product of:
                3.6055512 = tf(freq=13.0), with freq of:
                  13.0 = termFreq=13.0
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.0390625 = fieldNorm(doc=1633)
        0.52 = coord(13/25)
    
  2. Stojanovic, N.: Ontology-based Information Retrieval : methods and tools for cooperative query answering (2005) 0.41
    0.40538245 = sum of:
      0.40538245 = product of:
        0.77958167 = sum of:
          0.026481308 = weight(abstract_txt:domain in 701) [ClassicSimilarity], result of:
            0.026481308 = score(doc=701,freq=1.0), product of:
              0.11929547 = queryWeight, product of:
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.025191251 = queryNorm
              0.22198084 = fieldWeight in 701, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.011796764 = weight(abstract_txt:their in 701) [ClassicSimilarity], result of:
            0.011796764 = score(doc=701,freq=1.0), product of:
              0.07965322 = queryWeight, product of:
                1.0007724 = boost
                3.1594994 = idf(docFreq=5101, maxDocs=44218)
                0.025191251 = queryNorm
              0.14810154 = fieldWeight in 701, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.1594994 = idf(docFreq=5101, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.020989114 = weight(abstract_txt:based in 701) [ClassicSimilarity], result of:
            0.020989114 = score(doc=701,freq=3.0), product of:
              0.081093065 = queryWeight, product of:
                1.0097771 = boost
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.025191251 = queryNorm
              0.25882748 = fieldWeight in 701, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.027359799 = weight(abstract_txt:results in 701) [ClassicSimilarity], result of:
            0.027359799 = score(doc=701,freq=3.0), product of:
              0.096767515 = queryWeight, product of:
                1.1030582 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.025191251 = queryNorm
              0.28273743 = fieldWeight in 701, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.01436395 = weight(abstract_txt:that in 701) [ClassicSimilarity], result of:
            0.01436395 = score(doc=701,freq=3.0), product of:
              0.07466548 = queryWeight, product of:
                1.2508867 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.025191251 = queryNorm
              0.19237739 = fieldWeight in 701, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.015170463 = weight(abstract_txt:this in 701) [ClassicSimilarity], result of:
            0.015170463 = score(doc=701,freq=3.0), product of:
              0.07743485 = queryWeight, product of:
                1.2738733 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.025191251 = queryNorm
              0.1959126 = fieldWeight in 701, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.047381032 = weight(abstract_txt:semantic in 701) [ClassicSimilarity], result of:
            0.047381032 = score(doc=701,freq=2.0), product of:
              0.15974273 = queryWeight, product of:
                1.4172426 = boost
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.025191251 = queryNorm
              0.2966084 = fieldWeight in 701, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.030021928 = weight(abstract_txt:information in 701) [ClassicSimilarity], result of:
            0.030021928 = score(doc=701,freq=8.0), product of:
              0.093533486 = queryWeight, product of:
                1.533671 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.025191251 = queryNorm
              0.32097518 = fieldWeight in 701, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.04985106 = weight(abstract_txt:user in 701) [ClassicSimilarity], result of:
            0.04985106 = score(doc=701,freq=4.0), product of:
              0.1443568 = queryWeight, product of:
                1.5556849 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.025191251 = queryNorm
              0.34533226 = fieldWeight in 701, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.041409433 = weight(abstract_txt:system in 701) [ClassicSimilarity], result of:
            0.041409433 = score(doc=701,freq=3.0), product of:
              0.15124118 = queryWeight, product of:
                1.7802994 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.025191251 = queryNorm
              0.27379733 = fieldWeight in 701, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.094328985 = weight(abstract_txt:retrieval in 701) [ClassicSimilarity], result of:
            0.094328985 = score(doc=701,freq=13.0), product of:
              0.16060534 = queryWeight, product of:
                1.8345857 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.025191251 = queryNorm
              0.58733404 = fieldWeight in 701, product of:
                3.6055512 = tf(freq=13.0), with freq of:
                  13.0 = termFreq=13.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.18941519 = weight(abstract_txt:query in 701) [ClassicSimilarity], result of:
            0.18941519 = score(doc=701,freq=8.0), product of:
              0.3005321 = queryWeight, product of:
                2.509594 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.025191251 = queryNorm
              0.6302661 = fieldWeight in 701, product of:
                2.828427 = tf(freq=8.0), with freq of:
                  8.0 = termFreq=8.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
          0.21101259 = weight(abstract_txt:ontology in 701) [ClassicSimilarity], result of:
            0.21101259 = score(doc=701,freq=4.0), product of:
              0.40690833 = queryWeight, product of:
                2.9201577 = boost
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.025191251 = queryNorm
              0.51857525 = fieldWeight in 701, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.046875 = fieldNorm(doc=701)
        0.52 = coord(13/25)
    
  3. Reimer, U.; Brockhausen, P.; Lau, T.; Reich, J.R.: Ontology-based knowledge management at work : the Swiss life case studies (2004) 0.38
    0.38109857 = sum of:
      0.38109857 = product of:
        0.7328819 = sum of:
          0.03089486 = weight(abstract_txt:domain in 4411) [ClassicSimilarity], result of:
            0.03089486 = score(doc=4411,freq=1.0), product of:
              0.11929547 = queryWeight, product of:
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.025191251 = queryNorm
              0.25897765 = fieldWeight in 4411, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.031025335 = weight(abstract_txt:applications in 4411) [ClassicSimilarity], result of:
            0.031025335 = score(doc=4411,freq=1.0), product of:
              0.119631104 = queryWeight, product of:
                1.0014057 = boost
                4.7422485 = idf(docFreq=1047, maxDocs=44218)
                0.025191251 = queryNorm
              0.25934172 = fieldWeight in 4411, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7422485 = idf(docFreq=1047, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.024487298 = weight(abstract_txt:based in 4411) [ClassicSimilarity], result of:
            0.024487298 = score(doc=4411,freq=3.0), product of:
              0.081093065 = queryWeight, product of:
                1.0097771 = boost
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.025191251 = 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)
          0.018428886 = weight(abstract_txt:results in 4411) [ClassicSimilarity], result of:
            0.018428886 = score(doc=4411,freq=1.0), product of:
              0.096767515 = queryWeight, product of:
                1.1030582 = boost
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.025191251 = queryNorm
              0.19044496 = fieldWeight in 4411, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.482422 = idf(docFreq=3693, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.06915862 = weight(abstract_txt:life in 4411) [ClassicSimilarity], result of:
            0.06915862 = score(doc=4411,freq=2.0), product of:
              0.16202699 = queryWeight, product of:
                1.1654179 = boost
                5.5189433 = idf(docFreq=481, maxDocs=44218)
                0.025191251 = queryNorm
              0.426834 = fieldWeight in 4411, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5189433 = idf(docFreq=481, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.013682802 = weight(abstract_txt:that in 4411) [ClassicSimilarity], result of:
            0.013682802 = score(doc=4411,freq=2.0), product of:
              0.07466548 = queryWeight, product of:
                1.2508867 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.025191251 = 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)
          0.017698873 = weight(abstract_txt:this in 4411) [ClassicSimilarity], result of:
            0.017698873 = score(doc=4411,freq=3.0), product of:
              0.07743485 = queryWeight, product of:
                1.2738733 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.025191251 = queryNorm
              0.2285647 = fieldWeight in 4411, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.055277877 = weight(abstract_txt:semantic in 4411) [ClassicSimilarity], result of:
            0.055277877 = score(doc=4411,freq=2.0), product of:
              0.15974273 = queryWeight, product of:
                1.4172426 = boost
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.025191251 = queryNorm
              0.34604314 = fieldWeight in 4411, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.0123834135 = weight(abstract_txt:information in 4411) [ClassicSimilarity], result of:
            0.0123834135 = score(doc=4411,freq=1.0), product of:
              0.093533486 = queryWeight, product of:
                1.533671 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.025191251 = queryNorm
              0.1323955 = fieldWeight in 4411, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.029079786 = weight(abstract_txt:user in 4411) [ClassicSimilarity], result of:
            0.029079786 = score(doc=4411,freq=1.0), product of:
              0.1443568 = queryWeight, product of:
                1.5556849 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.025191251 = queryNorm
              0.20144382 = fieldWeight in 4411, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.0546875 = fieldNorm(doc=4411)
          0.03944577 = weight(abstract_txt:system in 4411) [ClassicSimilarity], result of:
            0.03944577 = score(doc=4411,freq=2.0), product of:
              0.15124118 = queryWeight, product of:
                1.7802994 = boost
                3.3723085 = idf(docFreq=4123, maxDocs=44218)
                0.025191251 = 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)
          0.04316535 = weight(abstract_txt:retrieval in 4411) [ClassicSimilarity], result of:
            0.04316535 = score(doc=4411,freq=2.0), product of:
              0.16060534 = queryWeight, product of:
                1.8345857 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.025191251 = 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)
          0.34815302 = weight(abstract_txt:ontology in 4411) [ClassicSimilarity], result of:
            0.34815302 = score(doc=4411,freq=8.0), product of:
              0.40690833 = queryWeight, product of:
                2.9201577 = boost
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.025191251 = 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)
        0.52 = coord(13/25)
    
  4. De Maio, C.; Fenza, G.; Loia, V.; Senatore, S.: Hierarchical web resources retrieval by exploiting Fuzzy Formal Concept Analysis (2012) 0.37
    0.3650487 = sum of:
      0.3650487 = product of:
        0.8296562 = sum of:
          0.04413552 = weight(abstract_txt:domain in 2737) [ClassicSimilarity], result of:
            0.04413552 = score(doc=2737,freq=1.0), product of:
              0.11929547 = queryWeight, product of:
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.025191251 = queryNorm
              0.3699681 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.04432191 = weight(abstract_txt:applications in 2737) [ClassicSimilarity], result of:
            0.04432191 = score(doc=2737,freq=1.0), product of:
              0.119631104 = queryWeight, product of:
                1.0014057 = boost
                4.7422485 = idf(docFreq=1047, maxDocs=44218)
                0.025191251 = queryNorm
              0.37048817 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7422485 = idf(docFreq=1047, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.040393565 = weight(abstract_txt:based in 2737) [ClassicSimilarity], result of:
            0.040393565 = score(doc=2737,freq=4.0), product of:
              0.081093065 = queryWeight, product of:
                1.0097771 = boost
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.025191251 = queryNorm
              0.4981137 = fieldWeight in 2737, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.013821718 = weight(abstract_txt:that in 2737) [ClassicSimilarity], result of:
            0.013821718 = score(doc=2737,freq=1.0), product of:
              0.07466548 = queryWeight, product of:
                1.2508867 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.025191251 = queryNorm
              0.18511525 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.014597786 = weight(abstract_txt:this in 2737) [ClassicSimilarity], result of:
            0.014597786 = score(doc=2737,freq=1.0), product of:
              0.07743485 = queryWeight, product of:
                1.2738733 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.025191251 = queryNorm
              0.18851699 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.12100678 = weight(abstract_txt:graphical in 2737) [ClassicSimilarity], result of:
            0.12100678 = score(doc=2737,freq=1.0), product of:
              0.23368901 = queryWeight, product of:
                1.3996104 = boost
                6.627983 = idf(docFreq=158, maxDocs=44218)
                0.025191251 = queryNorm
              0.5178112 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.627983 = idf(docFreq=158, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.055839088 = weight(abstract_txt:semantic in 2737) [ClassicSimilarity], result of:
            0.055839088 = score(doc=2737,freq=1.0), product of:
              0.15974273 = queryWeight, product of:
                1.4172426 = boost
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.025191251 = queryNorm
              0.34955636 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.01769059 = weight(abstract_txt:information in 2737) [ClassicSimilarity], result of:
            0.01769059 = score(doc=2737,freq=1.0), product of:
              0.093533486 = queryWeight, product of:
                1.533671 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.025191251 = queryNorm
              0.18913643 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.061664782 = weight(abstract_txt:retrieval in 2737) [ClassicSimilarity], result of:
            0.061664782 = score(doc=2737,freq=2.0), product of:
              0.16060534 = queryWeight, product of:
                1.8345857 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.025191251 = queryNorm
              0.38395226 = fieldWeight in 2737, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.111613974 = weight(abstract_txt:query in 2737) [ClassicSimilarity], result of:
            0.111613974 = score(doc=2737,freq=1.0), product of:
              0.3005321 = queryWeight, product of:
                2.509594 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.025191251 = queryNorm
              0.37138787 = fieldWeight in 2737, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
          0.30457044 = weight(abstract_txt:ontology in 2737) [ClassicSimilarity], result of:
            0.30457044 = score(doc=2737,freq=3.0), product of:
              0.40690833 = queryWeight, product of:
                2.9201577 = boost
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.025191251 = queryNorm
              0.7484989 = fieldWeight in 2737, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.078125 = fieldNorm(doc=2737)
        0.44 = coord(11/25)
    
  5. Papadakis, I.; Stefanidakis, M.; Tzali, A.: Visualizing OPAC subject headings (2008) 0.33
    0.32859504 = sum of:
      0.32859504 = product of:
        0.63191354 = sum of:
          0.053511467 = weight(abstract_txt:domain in 2549) [ClassicSimilarity], result of:
            0.053511467 = score(doc=2549,freq=3.0), product of:
              0.11929547 = queryWeight, product of:
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.025191251 = queryNorm
              0.44856244 = fieldWeight in 2549, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                4.7355914 = idf(docFreq=1054, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.019463668 = weight(abstract_txt:their in 2549) [ClassicSimilarity], result of:
            0.019463668 = score(doc=2549,freq=2.0), product of:
              0.07965322 = queryWeight, product of:
                1.0007724 = boost
                3.1594994 = idf(docFreq=5101, maxDocs=44218)
                0.025191251 = queryNorm
              0.24435507 = fieldWeight in 2549, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.1594994 = idf(docFreq=5101, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.031025335 = weight(abstract_txt:applications in 2549) [ClassicSimilarity], result of:
            0.031025335 = score(doc=2549,freq=1.0), product of:
              0.119631104 = queryWeight, product of:
                1.0014057 = boost
                4.7422485 = idf(docFreq=1047, maxDocs=44218)
                0.025191251 = queryNorm
              0.25934172 = fieldWeight in 2549, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7422485 = idf(docFreq=1047, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.024487298 = weight(abstract_txt:based in 2549) [ClassicSimilarity], result of:
            0.024487298 = score(doc=2549,freq=3.0), product of:
              0.081093065 = queryWeight, product of:
                1.0097771 = boost
                3.1879277 = idf(docFreq=4958, maxDocs=44218)
                0.025191251 = queryNorm
              0.3019654 = fieldWeight in 2549, 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=2549)
          0.045248732 = weight(abstract_txt:selection in 2549) [ClassicSimilarity], result of:
            0.045248732 = score(doc=2549,freq=1.0), product of:
              0.15385233 = queryWeight, product of:
                1.1356384 = boost
                5.377919 = idf(docFreq=554, maxDocs=44218)
                0.025191251 = queryNorm
              0.29410496 = fieldWeight in 2549, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.377919 = idf(docFreq=554, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.013682802 = weight(abstract_txt:that in 2549) [ClassicSimilarity], result of:
            0.013682802 = score(doc=2549,freq=2.0), product of:
              0.07466548 = queryWeight, product of:
                1.2508867 = boost
                2.3694751 = idf(docFreq=11241, maxDocs=44218)
                0.025191251 = queryNorm
              0.18325473 = fieldWeight in 2549, 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=2549)
          0.017698873 = weight(abstract_txt:this in 2549) [ClassicSimilarity], result of:
            0.017698873 = score(doc=2549,freq=3.0), product of:
              0.07743485 = queryWeight, product of:
                1.2738733 = boost
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.025191251 = queryNorm
              0.2285647 = fieldWeight in 2549, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                2.4130175 = idf(docFreq=10762, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.07817472 = weight(abstract_txt:semantic in 2549) [ClassicSimilarity], result of:
            0.07817472 = score(doc=2549,freq=4.0), product of:
              0.15974273 = queryWeight, product of:
                1.4172426 = boost
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.025191251 = queryNorm
              0.4893789 = fieldWeight in 2549, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                4.4743214 = idf(docFreq=1369, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.024766827 = weight(abstract_txt:information in 2549) [ClassicSimilarity], result of:
            0.024766827 = score(doc=2549,freq=4.0), product of:
              0.093533486 = queryWeight, product of:
                1.533671 = boost
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.025191251 = queryNorm
              0.264791 = fieldWeight in 2549, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                2.4209464 = idf(docFreq=10677, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.041125026 = weight(abstract_txt:user in 2549) [ClassicSimilarity], result of:
            0.041125026 = score(doc=2549,freq=2.0), product of:
              0.1443568 = queryWeight, product of:
                1.5556849 = boost
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.025191251 = queryNorm
              0.28488457 = fieldWeight in 2549, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.6835442 = idf(docFreq=3020, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.030522512 = weight(abstract_txt:retrieval in 2549) [ClassicSimilarity], result of:
            0.030522512 = score(doc=2549,freq=1.0), product of:
              0.16060534 = queryWeight, product of:
                1.8345857 = boost
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.025191251 = queryNorm
              0.19004668 = fieldWeight in 2549, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                3.4751394 = idf(docFreq=3720, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.07812978 = weight(abstract_txt:query in 2549) [ClassicSimilarity], result of:
            0.07812978 = score(doc=2549,freq=1.0), product of:
              0.3005321 = queryWeight, product of:
                2.509594 = boost
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.025191251 = queryNorm
              0.2599715 = fieldWeight in 2549, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                4.7537646 = idf(docFreq=1035, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
          0.17407651 = weight(abstract_txt:ontology in 2549) [ClassicSimilarity], result of:
            0.17407651 = score(doc=2549,freq=2.0), product of:
              0.40690833 = queryWeight, product of:
                2.9201577 = boost
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.025191251 = queryNorm
              0.42780277 = fieldWeight in 2549, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                5.5314693 = idf(docFreq=475, maxDocs=44218)
                0.0546875 = fieldNorm(doc=2549)
        0.52 = coord(13/25)