Search (4 results, page 1 of 1)

  • × author_ss:"Qin, J."
  1. Qin, J.: Semantic similarities between a keyword database and a controlled vocabulary database : an investigation in the antibiotic resistance literature (2000) 0.03
    0.026437245 = product of:
      0.05287449 = sum of:
        0.05287449 = product of:
          0.10574898 = sum of:
            0.10574898 = weight(_text_:plus in 4386) [ClassicSimilarity], result of:
              0.10574898 = score(doc=4386,freq=2.0), product of:
                0.3101809 = queryWeight, product of:
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.05026075 = queryNorm
                0.3409268 = fieldWeight in 4386, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  6.1714344 = idf(docFreq=250, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4386)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    The 'KeyWords Plus' in the Science Citation Index database represents an approach to combining citation and semantic indexing in describing the document content. This paper explores the similariites or dissimilarities between citation-semantic and analytic indexing. The dataset consisted of over 400 matching records in the SCI and MEDLINE databases on antibiotic resistance in pneumonia. The degree of similarity in indexing terms was found to vary on a scale from completely different to completely identical with various levels in between. The within-document similarity in the 2 databases was measured by a variation on the Jaccard coefficient - the Inclusion Index. The average inclusion coefficient was 0,4134 for SCI and 0,3371 for Medline. The 20 terms occuring most frequently in each database were identified. The 2 groups of terms shared the same terms that consist of the 'intellectual base' for the subject. conceptual similarity was analyzed through scatterplots of matching and nonmatching terms vs. partially identical and broader/narrower terms. The study also found that both databases differed in assigning terms in various semantic categories. Implications of this research and further studies are suggested
  2. Qin, J.; Paling, S.: Converting a controlled vocabulary into an ontology : the case of GEM (2001) 0.02
    0.02042891 = product of:
      0.04085782 = sum of:
        0.04085782 = product of:
          0.08171564 = sum of:
            0.08171564 = weight(_text_:22 in 3895) [ClassicSimilarity], result of:
              0.08171564 = score(doc=3895,freq=2.0), product of:
                0.17600457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05026075 = queryNorm
                0.46428138 = fieldWeight in 3895, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=3895)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    24. 8.2005 19:20:22
  3. Chen, M.; Liu, X.; Qin, J.: Semantic relation extraction from socially-generated tags : a methodology for metadata generation (2008) 0.01
    0.008512047 = product of:
      0.017024094 = sum of:
        0.017024094 = product of:
          0.03404819 = sum of:
            0.03404819 = weight(_text_:22 in 2648) [ClassicSimilarity], result of:
              0.03404819 = score(doc=2648,freq=2.0), product of:
                0.17600457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05026075 = queryNorm
                0.19345059 = fieldWeight in 2648, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=2648)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Metadata for semantic and social applications : proceedings of the International Conference on Dublin Core and Metadata Applications, Berlin, 22 - 26 September 2008, DC 2008: Berlin, Germany / ed. by Jane Greenberg and Wolfgang Klas
  4. Qin, J.: Evolving paradigms of knowledge representation and organization : a comparative study of classification, XML/DTD and ontology (2003) 0.01
    0.0068096374 = product of:
      0.013619275 = sum of:
        0.013619275 = product of:
          0.02723855 = sum of:
            0.02723855 = weight(_text_:22 in 2763) [ClassicSimilarity], result of:
              0.02723855 = score(doc=2763,freq=2.0), product of:
                0.17600457 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05026075 = queryNorm
                0.15476047 = fieldWeight in 2763, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03125 = fieldNorm(doc=2763)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    12. 9.2004 17:22:35