Search (4 results, page 1 of 1)

  • × author_ss:"Chen, C."
  • × type_ss:"a"
  1. Chen, C.: Top Ten Problems in Visual Interfaces to Digital Libraries (2002) 0.02 
    0.023303902 = product of:
  0.046607804 = sum of:
    0.046607804 = product of:
      0.09321561 = sum of:
        0.09321561 = weight(_text_:22 in 4840) [ClassicSimilarity], result of:
          0.09321561 = score(doc=4840,freq=4.0), product of:
            0.14196861 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.040541265 = queryNorm
            0.6565931 = fieldWeight in 4840, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=4840)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 2.2003 17:25:39
    22. 2.2003 18:13:11
  2. Börner, K.; Chen, C.: Visual Interfaces to Digital Libraries : Motivation, Utilization, and Socio-technical Challenges (2002) 0.02 
    0.023303902 = product of:
  0.046607804 = sum of:
    0.046607804 = product of:
      0.09321561 = sum of:
        0.09321561 = weight(_text_:22 in 1359) [ClassicSimilarity], result of:
          0.09321561 = score(doc=1359,freq=4.0), product of:
            0.14196861 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.040541265 = queryNorm
            0.6565931 = fieldWeight in 1359, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.09375 = fieldNorm(doc=1359)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 2.2003 17:25:39
    22. 2.2003 18:20:07
  3. Chen, C.: CiteSpace II : detecting and visualizing emerging trends and transient patterns in scientific literature (2006) 0.02 
    0.02148951 = sum of:
  0.0077575548 = product of:
    0.046545327 = sum of:
      0.046545327 = weight(_text_:authors in 5272) [ClassicSimilarity], result of:
        0.046545327 = score(doc=5272,freq=2.0), product of:
          0.18482009 = queryWeight, product of:
            4.558814 = idf(docFreq=1258, maxDocs=44218)
            0.040541265 = queryNorm
          0.25184128 = fieldWeight in 5272, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.558814 = idf(docFreq=1258, maxDocs=44218)
            0.0390625 = fieldNorm(doc=5272)
    0.16666667 = coord(1/6)
  0.013731956 = product of:
    0.027463911 = sum of:
      0.027463911 = weight(_text_:22 in 5272) [ClassicSimilarity], result of:
        0.027463911 = score(doc=5272,freq=2.0), product of:
          0.14196861 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.040541265 = queryNorm
          0.19345059 = fieldWeight in 5272, 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=5272)
    0.5 = coord(1/2)
    Abstract
    This article describes the latest development of a generic approach to detecting and visualizing emerging trends and transient patterns in scientific literature. The work makes substantial theoretical and methodological contributions to progressive knowledge domain visualization. A specialty is conceptualized and visualized as a time-variant duality between two fundamental concepts in information science: research fronts and intellectual bases. A research front is defined as an emergent and transient grouping of concepts and underlying research issues. The intellectual base of a research front is its citation and co-citation footprint in scientific literature - an evolving network of scientific publications cited by research-front concepts. Kleinberg's (2002) burst-detection algorithm is adapted to identify emergent research-front concepts. Freeman's (1979) betweenness centrality metric is used to highlight potential pivotal points of paradigm shift over time. Two complementary visualization views are designed and implemented: cluster views and time-zone views. The contributions of the approach are that (a) the nature of an intellectual base is algorithmically and temporally identified by emergent research-front terms, (b) the value of a co-citation cluster is explicitly interpreted in terms of research-front concepts, and (c) visually prominent and algorithmically detected pivotal points substantially reduce the complexity of a visualized network. The modeling and visualization process is implemented in CiteSpace II, a Java application, and applied to the analysis of two research fields: mass extinction (1981-2004) and terrorism (1990-2003). Prominent trends and pivotal points in visualized networks were verified in collaboration with domain experts, who are the authors of pivotal-point articles. Practical implications of the work are discussed. A number of challenges and opportunities for future studies are identified.
    Date
    22. 7.2006 16:11:05
  4. Liu, S.; Chen, C.: ¬The differences between latent topics in abstracts and citation contexts of citing papers (2013) 0.01 
    0.006865978 = product of:
  0.013731956 = sum of:
    0.013731956 = product of:
      0.027463911 = sum of:
        0.027463911 = weight(_text_:22 in 671) [ClassicSimilarity], result of:
          0.027463911 = score(doc=671,freq=2.0), product of:
            0.14196861 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.040541265 = queryNorm
            0.19345059 = fieldWeight in 671, 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=671)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2013 19:50:00

Authors

Years

Themes