Search (6 results, page 1 of 1)

Ding, Y.: Scholarly communication and bibliometrics : Part 1: The scholarly communication model: literature review (1998) 0.03

0.029286046 = product of:
  0.05857209 = sum of:
    0.05857209 = product of:
      0.11714418 = sum of:
        0.11714418 = weight(_text_:1998 in 3995) [ClassicSimilarity], result of:
          0.11714418 = score(doc=3995,freq=5.0), product of:
            0.17371792 = queryWeight, product of:
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.045003213 = queryNorm
            0.67433566 = fieldWeight in 3995, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.078125 = fieldNorm(doc=3995)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source: International forum on information and documentation. 23(1998) no.2, S.20-29
Year: 1998

Ding, Y.: Visualization of intellectual structure in information retrieval : author cocitation analysis (1998) 0.02

0.020500232 = product of:
  0.041000463 = sum of:
    0.041000463 = product of:
      0.082000926 = sum of:
        0.082000926 = weight(_text_:1998 in 2792) [ClassicSimilarity], result of:
          0.082000926 = score(doc=2792,freq=5.0), product of:
            0.17371792 = queryWeight, product of:
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.045003213 = queryNorm
            0.47203496 = fieldWeight in 2792, product of:
              2.236068 = tf(freq=5.0), with freq of:
                5.0 = termFreq=5.0
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2792)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source: International forum on information and documentation. 23(1998) no.1, S.25-36
Year: 1998

Yan, E.; Ding, Y.: Weighted citation : an indicator of an article's prestige (2010) 0.01

0.014817697 = product of:
  0.029635394 = sum of:
    0.029635394 = product of:
      0.059270788 = sum of:
        0.059270788 = weight(_text_:1998 in 3705) [ClassicSimilarity], result of:
          0.059270788 = score(doc=3705,freq=2.0), product of:
            0.17371792 = queryWeight, product of:
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.045003213 = queryNorm
            0.34118983 = fieldWeight in 3705, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.0625 = fieldNorm(doc=3705)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract: The authors propose using the technique of weighted citation to measure an article's prestige. The technique allocates a different weight to each reference by taking into account the impact of citing journals and citation time intervals. Weightedcitation captures prestige, whereas citation counts capture popularity. They compare the value variances for popularity and prestige for articles published in the Journal of the American Society for Information Science and Technology from 1998 to 2007, and find that the majority have comparable status.

Ding, Y.: Applying weighted PageRank to author citation networks (2011) 0.01

0.010670299 = product of:
  0.021340597 = sum of:
    0.021340597 = product of:
      0.042681195 = sum of:
        0.042681195 = weight(_text_:22 in 4188) [ClassicSimilarity], result of:
          0.042681195 = score(doc=4188,freq=2.0), product of:
            0.15759358 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045003213 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 1.2011 13:02:21

Milojevic, S.; Sugimoto, C.R.; Yan, E.; Ding, Y.: ¬The cognitive structure of Library and Information Science : analysis of article title words (2011) 0.01
```
0.0092610605 = product of:
  0.018522121 = sum of:
    0.018522121 = product of:
      0.037044242 = sum of:
        0.037044242 = weight(_text_:1998 in 4608) [ClassicSimilarity], result of:
          0.037044242 = score(doc=4608,freq=2.0), product of:
            0.17371792 = queryWeight, product of:
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.045003213 = queryNorm
            0.21324365 = fieldWeight in 4608, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8601224 = idf(docFreq=2531, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4608)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
```
Abstract

This study comprises a suite of analyses of words in article titles in order to reveal the cognitive structure of Library and Information Science (LIS). The use of title words to elucidate the cognitive structure of LIS has been relatively neglected. The present study addresses this gap by performing (a) co-word analysis and hierarchical clustering, (b) multidimensional scaling, and (c) determination of trends in usage of terms. The study is based on 10,344 articles published between 1988 and 2007 in 16 LIS journals. Methodologically, novel aspects of this study are: (a) its large scale, (b) removal of non-specific title words based on the "word concentration" measure (c) identification of the most frequent terms that include both single words and phrases, and (d) presentation of the relative frequencies of terms using "heatmaps". Conceptually, our analysis reveals that LIS consists of three main branches: the traditionally recognized library-related and information-related branches, plus an equally distinct bibliometrics/scientometrics branch. The three branches focus on: libraries, information, and science, respectively. In addition, our study identifies substructures within each branch. We also tentatively identify "information seeking behavior" as a branch that is establishing itself separate from the three main branches. Furthermore, we find that cognitive concepts in LIS evolve continuously, with no stasis since 1992. The most rapid development occurred between 1998 and 2001, influenced by the increased focus on the Internet. The change in the cognitive landscape is found to be driven by the emergence of new information technologies, and the retirement of old ones.

Ding, Y.; Zhang, G.; Chambers, T.; Song, M.; Wang, X.; Zhai, C.: Content-based citation analysis : the next generation of citation analysis (2014) 0.01

0.00914597 = product of:
  0.01829194 = sum of:
    0.01829194 = product of:
      0.03658388 = sum of:
        0.03658388 = weight(_text_:22 in 1521) [ClassicSimilarity], result of:
          0.03658388 = score(doc=1521,freq=2.0), product of:
            0.15759358 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045003213 = 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)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 8.2014 16:52:04

Search (6 results, page 1 of 1)

Authors

Years

Types

Themes