Search (7 results, page 1 of 1)

  • × author_ss:"Ding, Y."
  1. Li, D.; Wang, Y.; Madden, A.; Ding, Y.; Sun, G.G.; Zhang, N.; Zhou, E.: Analyzing stock market trends using social media user moods and social influence (2019) 0.02
    0.021338467 = product of:
      0.085353866 = sum of:
        0.085353866 = weight(_text_:trend in 5362) [ClassicSimilarity], result of:
          0.085353866 = score(doc=5362,freq=2.0), product of:
            0.24938065 = queryWeight, product of:
              6.195629 = idf(docFreq=244, maxDocs=44218)
              0.04025106 = queryNorm
            0.3422634 = fieldWeight in 5362, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.195629 = idf(docFreq=244, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5362)
      0.25 = coord(1/4)
    
    Abstract
    Information from microblogs is gaining increasing attention from researchers interested in analyzing fluctuations in stock markets. Behavioral financial theory draws on social psychology to explain some of the irrational behaviors associated with financial decisions to help explain some of the fluctuations. In this study we argue that social media users who demonstrate an interest in finance can offer insights into ways in which irrational behaviors may affect a stock market. To test this, we analyzed all the data collected over a 3-month period in 2011 from Tencent Weibo (one of the largest microblogging websites in China). We designed a social influence (SI)-based Tencent finance-related moods model to simulate investors' irrational behaviors, and designed a Tencent Moods-based Stock Trend Analysis (TM_STA) model to detect correlations between Tencent moods and the Hushen-300 index (one of the most important financial indexes in China). Experimental results show that the proposed method can help explain the data fluctuation. The findings support the existing behavioral financial theory, and can help to understand short-term rises and falls in a stock market. We use behavioral financial theory to further explain our findings, and to propose a trading model to verify the proposed model.
  2. Ding, Y.: Scholarly communication and bibliometrics : Part 1: The scholarly communication model: literature review (1998) 0.00
    0.0045858053 = product of:
      0.018343221 = sum of:
        0.018343221 = product of:
          0.055029664 = sum of:
            0.055029664 = weight(_text_:29 in 3995) [ClassicSimilarity], result of:
              0.055029664 = score(doc=3995,freq=2.0), product of:
                0.14159065 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04025106 = queryNorm
                0.38865322 = fieldWeight in 3995, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3995)
          0.33333334 = coord(1/3)
      0.25 = coord(1/4)
    
    Source
    International forum on information and documentation. 23(1998) no.2, S.20-29
  3. Ding, Y.: Applying weighted PageRank to author citation networks (2011) 0.00
    0.003181187 = product of:
      0.012724748 = sum of:
        0.012724748 = product of:
          0.03817424 = sum of:
            0.03817424 = weight(_text_:22 in 4188) [ClassicSimilarity], result of:
              0.03817424 = score(doc=4188,freq=2.0), product of:
                0.14095236 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04025106 = queryNorm
                0.2708308 = fieldWeight in 4188, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4188)
          0.33333334 = coord(1/3)
      0.25 = coord(1/4)
    
    Date
    22. 1.2011 13:02:21
  4. Song, M.; Kim, S.Y.; Zhang, G.; Ding, Y.; Chambers, T.: Productivity and influence in bioinformatics : a bibliometric analysis using PubMed central (2014) 0.00
    0.002751483 = product of:
      0.011005932 = sum of:
        0.011005932 = product of:
          0.033017796 = sum of:
            0.033017796 = weight(_text_:29 in 1202) [ClassicSimilarity], result of:
              0.033017796 = score(doc=1202,freq=2.0), product of:
                0.14159065 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04025106 = queryNorm
                0.23319192 = fieldWeight in 1202, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1202)
          0.33333334 = coord(1/3)
      0.25 = coord(1/4)
    
    Date
    29. 1.2014 16:40:41
  5. Ding, Y.; Zhang, G.; Chambers, T.; Song, M.; Wang, X.; Zhai, C.: Content-based citation analysis : the next generation of citation analysis (2014) 0.00
    0.0027267316 = product of:
      0.010906926 = sum of:
        0.010906926 = product of:
          0.03272078 = sum of:
            0.03272078 = weight(_text_:22 in 1521) [ClassicSimilarity], result of:
              0.03272078 = score(doc=1521,freq=2.0), product of:
                0.14095236 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.04025106 = queryNorm
                0.23214069 = fieldWeight in 1521, 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=1521)
          0.33333334 = coord(1/3)
      0.25 = coord(1/4)
    
    Date
    22. 8.2014 16:52:04
  6. Min, C.; Ding, Y.; Li, J.; Bu, Y.; Pei, L.; Sun, J.: Innovation or imitation : the diffusion of citations (2018) 0.00
    0.0022929027 = product of:
      0.009171611 = sum of:
        0.009171611 = product of:
          0.027514832 = sum of:
            0.027514832 = weight(_text_:29 in 4445) [ClassicSimilarity], result of:
              0.027514832 = score(doc=4445,freq=2.0), product of:
                0.14159065 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04025106 = queryNorm
                0.19432661 = fieldWeight in 4445, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4445)
          0.33333334 = coord(1/3)
      0.25 = coord(1/4)
    
    Date
    29. 9.2018 13:24:10
  7. Liu, M.; Bu, Y.; Chen, C.; Xu, J.; Li, D.; Leng, Y.; Freeman, R.B.; Meyer, E.T.; Yoon, W.; Sung, M.; Jeong, M.; Lee, J.; Kang, J.; Min, C.; Zhai, Y.; Song, M.; Ding, Y.: Pandemics are catalysts of scientific novelty : evidence from COVID-19 (2022) 0.00
    0.0022929027 = product of:
      0.009171611 = sum of:
        0.009171611 = product of:
          0.027514832 = sum of:
            0.027514832 = weight(_text_:29 in 633) [ClassicSimilarity], result of:
              0.027514832 = score(doc=633,freq=2.0), product of:
                0.14159065 = queryWeight, product of:
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.04025106 = queryNorm
                0.19432661 = fieldWeight in 633, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5176873 = idf(docFreq=3565, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=633)
          0.33333334 = coord(1/3)
      0.25 = coord(1/4)
    
    Abstract
    Scientific novelty drives the efforts to invent new vaccines and solutions during the pandemic. First-time collaboration and international collaboration are two pivotal channels to expand teams' search activities for a broader scope of resources required to address the global challenge, which might facilitate the generation of novel ideas. Our analysis of 98,981 coronavirus papers suggests that scientific novelty measured by the BioBERT model that is pretrained on 29 million PubMed articles, and first-time collaboration increased after the outbreak of COVID-19, and international collaboration witnessed a sudden decrease. During COVID-19, papers with more first-time collaboration were found to be more novel and international collaboration did not hamper novelty as it had done in the normal periods. The findings suggest the necessity of reaching out for distant resources and the importance of maintaining a collaborative scientific community beyond nationalism during a pandemic.