Search (17 results, page 1 of 1)

  • × author_ss:"Li, Y."
  1. Crespo, J.A.; Herranz, N.; Li, Y.; Ruiz-Castillo, J.: ¬The effect on citation inequality of differences in citation practices at the web of science subject category level (2014) 0.03
    0.030523298 = product of:
      0.07630824 = sum of:
        0.026021479 = weight(_text_:18 in 1291) [ClassicSimilarity], result of:
          0.026021479 = score(doc=1291,freq=6.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.21779455 = fieldWeight in 1291, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1291)
        0.050286766 = weight(_text_:22 in 1291) [ClassicSimilarity], result of:
          0.050286766 = score(doc=1291,freq=4.0), product of:
            0.1838098 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.052489646 = queryNorm
            0.27358043 = fieldWeight in 1291, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1291)
      0.4 = coord(2/5)
    
    Abstract
    This article studies the impact of differences in citation practices at the subfield, or Web of Science subject category level, using the model introduced in Crespo, Li, and Ruiz-Castillo (2013a), according to which the number of citations received by an article depends on its underlying scientific influence and the field to which it belongs. We use the same Thomson Reuters data set of about 4.4 million articles used in Crespo et al. (2013a) to analyze 22 broad fields. The main results are the following: First, when the classification system goes from 22 fields to 219 subfields the effect on citation inequality of differences in citation practices increases from ?14% at the field level to 18% at the subfield level. Second, we estimate a set of exchange rates (ERs) over a wide [660, 978] citation quantile interval to express the citation counts of articles into the equivalent counts in the all-sciences case. In the fractional case, for example, we find that in 187 of 219 subfields the ERs are reliable in the sense that the coefficient of variation is smaller than or equal to 0.10. Third, in the fractional case the normalization of the raw data using the ERs (or subfield mean citations) as normalization factors reduces the importance of the differences in citation practices from 18% to 3.8% (3.4%) of overall citation inequality. Fourth, the results in the fractional case are essentially replicated when we adopt a multiplicative approach.
    Date
    17. 2.1997 18:25:04
  2. Xiao, D.; Ji, Y.; Li, Y.; Zhuang, F.; Shi, C.: Coupled matrix factorization and topic modeling for aspect mining (2018) 0.01
    0.0052042957 = product of:
      0.026021479 = sum of:
        0.026021479 = weight(_text_:18 in 5042) [ClassicSimilarity], result of:
          0.026021479 = score(doc=5042,freq=6.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.21779455 = fieldWeight in 5042, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5042)
      0.2 = coord(1/5)
    
    Date
    5. 9.2014 10:18:18
    15. 3.2019 18:30:27
  3. Thomas, M.A.; Li, Y.; Sistenich, V.; Diango, K.N.; Kabongo, D.: ¬A multi-stakeholder engagement framework for knowledge management in ICT4D (2023) 0.00
    0.0042492896 = product of:
      0.021246448 = sum of:
        0.021246448 = weight(_text_:18 in 1086) [ClassicSimilarity], result of:
          0.021246448 = score(doc=1086,freq=4.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.1778285 = fieldWeight in 1086, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1086)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
    16.11.2023 18:55:29
  4. Li, Y.: Consistency versus inconsistency : issues in Chinese cataloging in OCLC (2004) 0.00
    0.0042065824 = product of:
      0.02103291 = sum of:
        0.02103291 = weight(_text_:18 in 5657) [ClassicSimilarity], result of:
          0.02103291 = score(doc=5657,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.17604123 = fieldWeight in 5657, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0546875 = fieldNorm(doc=5657)
      0.2 = coord(1/5)
    
    Date
    21.10.1996 18:32:02
  5. Li, Y.; Shawe-Taylor, J.: Advanced learning algorithms for cross-language patent retrieval and classification (2007) 0.00
    0.003605642 = product of:
      0.018028209 = sum of:
        0.018028209 = weight(_text_:18 in 931) [ClassicSimilarity], result of:
          0.018028209 = score(doc=931,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.15089248 = fieldWeight in 931, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.046875 = fieldNorm(doc=931)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  6. Cao, Q.; Lu, Y.; Dong, D.; Tang, Z.; Li, Y.: ¬The roles of bridging and bonding in social media communities (2013) 0.00
    0.003605642 = product of:
      0.018028209 = sum of:
        0.018028209 = weight(_text_:18 in 1009) [ClassicSimilarity], result of:
          0.018028209 = score(doc=1009,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.15089248 = fieldWeight in 1009, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.046875 = fieldNorm(doc=1009)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  7. Luo, P.; Chen, K.; Wu, C.; Li, Y.: Exploring the social influence of multichannel access in an online health community (2018) 0.00
    0.003605642 = product of:
      0.018028209 = sum of:
        0.018028209 = weight(_text_:18 in 4033) [ClassicSimilarity], result of:
          0.018028209 = score(doc=4033,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.15089248 = fieldWeight in 4033, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.046875 = fieldNorm(doc=4033)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  8. Liu, J.; Li, Y.; Hastings, S.K.: Simplified scheme of search task difficulty reasons (2019) 0.00
    0.003605642 = product of:
      0.018028209 = sum of:
        0.018028209 = weight(_text_:18 in 5224) [ClassicSimilarity], result of:
          0.018028209 = score(doc=5224,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.15089248 = fieldWeight in 5224, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.046875 = fieldNorm(doc=5224)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  9. Li, Y.; Kobsa, A.: Context and privacy concerns in friend request decisions (2020) 0.00
    0.003605642 = product of:
      0.018028209 = sum of:
        0.018028209 = weight(_text_:18 in 5873) [ClassicSimilarity], result of:
          0.018028209 = score(doc=5873,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.15089248 = fieldWeight in 5873, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.046875 = fieldNorm(doc=5873)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  10. Zhang, Y.; Li, Y.: ¬A user-centered functional metadata evaluation of moving image collections (2008) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 1884) [ClassicSimilarity], result of:
          0.015023507 = score(doc=1884,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 1884, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1884)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  11. Li, Y.; Belkin, N.J.: ¬A faceted approach to conceptualizing tasks in information seeking (2008) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 2442) [ClassicSimilarity], result of:
          0.015023507 = score(doc=2442,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 2442, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2442)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  12. Li, Y.: Exploring the relationships between work task and search task in information search (2009) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 2714) [ClassicSimilarity], result of:
          0.015023507 = score(doc=2714,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 2714, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2714)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  13. Li, Y.; Belkin, N.J.: ¬An exploration of the relationships between work task and interactive information search behavior (2010) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 3980) [ClassicSimilarity], result of:
          0.015023507 = score(doc=3980,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 3980, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3980)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  14. Yang, M.; Kiang, M.; Chen, H.; Li, Y.: Artificial immune system for illicit content identification in social media (2012) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 4980) [ClassicSimilarity], result of:
          0.015023507 = score(doc=4980,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 4980, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4980)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  15. Shen, J.; Yao, L.; Li, Y.; Clarke, M.; Wang, L.; Li, D.: Visualizing the history of evidence-based medicine : a bibliometric analysis (2013) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 1090) [ClassicSimilarity], result of:
          0.015023507 = score(doc=1090,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 1090, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1090)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  16. Li, Y.; Xu, S.; Luo, X.; Lin, S.: ¬A new algorithm for product image search based on salient edge characterization (2014) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 1552) [ClassicSimilarity], result of:
          0.015023507 = score(doc=1552,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 1552, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1552)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04
  17. Li, Y.; Crescenzi, A.; Ward, A.R.; Capra, R.: Thinking inside the box : an evaluation of a novel search-assisting tool for supporting (meta)cognition during exploratory search (2023) 0.00
    0.0030047016 = product of:
      0.015023507 = sum of:
        0.015023507 = weight(_text_:18 in 1040) [ClassicSimilarity], result of:
          0.015023507 = score(doc=1040,freq=2.0), product of:
            0.11947718 = queryWeight, product of:
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.052489646 = queryNorm
            0.12574373 = fieldWeight in 1040, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.2762048 = idf(docFreq=12340, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1040)
      0.2 = coord(1/5)
    
    Date
    17. 2.1997 18:25:04