Search (1 results, page 1 of 1)

  • × author_ss:"Janssens, F."
  • × theme_ss:"Automatisches Klassifizieren"
  • × type_ss:"a"
  1. Liu, X.; Yu, S.; Janssens, F.; Glänzel, W.; Moreau, Y.; Moor, B.de: Weighted hybrid clustering by combining text mining and bibliometrics on a large-scale journal database (2010) 0.04
    0.040972486 = product of:
      0.10925996 = sum of:
        0.020951848 = weight(_text_:web in 3464) [ClassicSimilarity], result of:
          0.020951848 = score(doc=3464,freq=2.0), product of:
            0.096845865 = queryWeight, product of:
              3.2635105 = idf(docFreq=4597, maxDocs=44218)
              0.029675366 = queryNorm
            0.21634221 = fieldWeight in 3464, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2635105 = idf(docFreq=4597, maxDocs=44218)
              0.046875 = fieldNorm(doc=3464)
        0.03406831 = weight(_text_:data in 3464) [ClassicSimilarity], result of:
          0.03406831 = score(doc=3464,freq=6.0), product of:
            0.093835 = queryWeight, product of:
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.029675366 = queryNorm
            0.3630661 = fieldWeight in 3464, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.046875 = fieldNorm(doc=3464)
        0.054239806 = product of:
          0.10847961 = sum of:
            0.10847961 = weight(_text_:mining in 3464) [ClassicSimilarity], result of:
              0.10847961 = score(doc=3464,freq=6.0), product of:
                0.16744171 = queryWeight, product of:
                  5.642448 = idf(docFreq=425, maxDocs=44218)
                  0.029675366 = queryNorm
                0.64786494 = fieldWeight in 3464, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  5.642448 = idf(docFreq=425, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3464)
          0.5 = coord(1/2)
      0.375 = coord(3/8)
    
    Abstract
    We propose a new hybrid clustering framework to incorporate text mining with bibliometrics in journal set analysis. The framework integrates two different approaches: clustering ensemble and kernel-fusion clustering. To improve the flexibility and the efficiency of processing large-scale data, we propose an information-based weighting scheme to leverage the effect of multiple data sources in hybrid clustering. Three different algorithms are extended by the proposed weighting scheme and they are employed on a large journal set retrieved from the Web of Science (WoS) database. The clustering performance of the proposed algorithms is systematically evaluated using multiple evaluation methods, and they were cross-compared with alternative methods. Experimental results demonstrate that the proposed weighted hybrid clustering strategy is superior to other methods in clustering performance and efficiency. The proposed approach also provides a more refined structural mapping of journal sets, which is useful for monitoring and detecting new trends in different scientific fields.
    Theme
    Data Mining