Search (5 results, page 1 of 1)

  • × author_ss:"Sun, Y."
  • × year_i:[2000 TO 2010}
  1. Wu, K.J.; Chen, M.-C.; Sun, Y.: Automatic topics discovery from hyperlinked documents (2004) 0.01 
    0.009748395 = product of:
  0.01949679 = sum of:
    0.01949679 = product of:
      0.03899358 = sum of:
        0.03899358 = weight(_text_:p in 2563) [ClassicSimilarity], result of:
          0.03899358 = score(doc=2563,freq=2.0), product of:
            0.16359726 = queryWeight, product of:
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.045500398 = queryNorm
            0.23835106 = fieldWeight in 2563, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.046875 = fieldNorm(doc=2563)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Abstract
    Topic discovery is an important means for marketing, e-Business and social science studies. As well, it can be applied to various purposes, such as identifying a group with certain properties and observing the emergence and diminishment of a certain cyber community. Previous topic discovery work (J.M. Kleinberg, Proceedings of the 9th Annual ACM-SIAM Symposium on Discrete Algorithms, San Francisco, California, p. 668) requires manual judgment of usefulness of outcomes and is thus incapable of handling the explosive growth of the Internet. In this paper, we propose the Automatic Topic Discovery (ATD) method, which combines a method of base set construction, a clustering algorithm and an iterative principal eigenvector computation method to discover the topics relevant to a given query without using manual examination. Given a query, ATD returns with topics associated with the query and top representative pages for each topic. Our experiments show that the ATD method performs better than the traditional eigenvector method in terms of computation time and topic discovery quality.
  2. Ng, K.B.; Kantor, P.B.; Strzalkowski, T.; Wacholder, N.; Tang, R.; Bai, B.; Rittman,; Song, P.; Sun, Y.: Automated judgment of document qualities (2006) 0.01 
    0.009748395 = product of:
  0.01949679 = sum of:
    0.01949679 = product of:
      0.03899358 = sum of:
        0.03899358 = weight(_text_:p in 182) [ClassicSimilarity], result of:
          0.03899358 = score(doc=182,freq=2.0), product of:
            0.16359726 = queryWeight, product of:
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.045500398 = queryNorm
            0.23835106 = fieldWeight in 182, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.046875 = fieldNorm(doc=182)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  3. Kelly, D.; Wacholder, N.; Rittman, R.; Sun, Y.; Kantor, P.; Small, S.; Strzalkowski, T.: Using interview data to identify evaluation criteria for interactive, analytical question-answering systems (2007) 0.01 
    0.009748395 = product of:
  0.01949679 = sum of:
    0.01949679 = product of:
      0.03899358 = sum of:
        0.03899358 = weight(_text_:p in 332) [ClassicSimilarity], result of:
          0.03899358 = score(doc=332,freq=2.0), product of:
            0.16359726 = queryWeight, product of:
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.045500398 = queryNorm
            0.23835106 = fieldWeight in 332, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.046875 = fieldNorm(doc=332)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  4. Wacholder, N.; Kelly, D.; Kantor, P.; Rittman, R.; Sun, Y.; Bai, B.; Small, S.; Yamrom, B.; Strzalkowski, T.: ¬A model for quantitative evaluation of an end-to-end question-answering system (2007) 0.01 
    0.009748395 = product of:
  0.01949679 = sum of:
    0.01949679 = product of:
      0.03899358 = sum of:
        0.03899358 = weight(_text_:p in 435) [ClassicSimilarity], result of:
          0.03899358 = score(doc=435,freq=2.0), product of:
            0.16359726 = queryWeight, product of:
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.045500398 = queryNorm
            0.23835106 = fieldWeight in 435, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5955126 = idf(docFreq=3298, maxDocs=44218)
              0.046875 = fieldNorm(doc=435)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  5. Leydesdorff, L.; Sun, Y.: National and international dimensions of the Triple Helix in Japan : university-industry-government versus international coauthorship relations (2009) 0.01 
    0.009247013 = product of:
  0.018494027 = sum of:
    0.018494027 = product of:
      0.036988053 = sum of:
        0.036988053 = weight(_text_:22 in 2761) [ClassicSimilarity], result of:
          0.036988053 = score(doc=2761,freq=2.0), product of:
            0.15933464 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045500398 = queryNorm
            0.23214069 = fieldWeight in 2761, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=2761)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    22. 3.2009 19:07:20

Authors

Themes