Search (2 results, page 1 of 1)

  • × theme_ss:"Data Mining"
  • × author_ss:"Liu, X."
  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
    0.03959743 = product of:
      0.07919486 = sum of:
        0.053759433 = weight(_text_:data in 3464) [ClassicSimilarity], result of:
          0.053759433 = score(doc=3464,freq=6.0), product of:
            0.14807065 = queryWeight, product of:
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.046827413 = 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)
        0.025435425 = product of:
          0.05087085 = sum of:
            0.05087085 = weight(_text_:processing in 3464) [ClassicSimilarity], result of:
              0.05087085 = score(doc=3464,freq=2.0), product of:
                0.18956426 = queryWeight, product of:
                  4.048147 = idf(docFreq=2097, maxDocs=44218)
                  0.046827413 = queryNorm
                0.26835677 = fieldWeight in 3464, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.048147 = idf(docFreq=2097, maxDocs=44218)
                  0.046875 = fieldNorm(doc=3464)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
    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
  2. Chen, S.Y.; Liu, X.: ¬The contribution of data mining to information science : making sense of it all (2005) 0.02
    0.021947198 = product of:
      0.08778879 = sum of:
        0.08778879 = weight(_text_:data in 4655) [ClassicSimilarity], result of:
          0.08778879 = score(doc=4655,freq=4.0), product of:
            0.14807065 = queryWeight, product of:
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.046827413 = queryNorm
            0.5928845 = fieldWeight in 4655, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.1620505 = idf(docFreq=5088, maxDocs=44218)
              0.09375 = fieldNorm(doc=4655)
      0.25 = coord(1/4)
    
    Theme
    Data Mining