-
Chen, C.: Top Ten Problems in Visual Interfaces to Digital Libraries (2002)
0.09
0.08504304 = product of:
0.25512913 = sum of:
0.25512913 = sum of:
0.1440895 = weight(_text_:2002 in 4840) [ClassicSimilarity], result of:
0.1440895 = score(doc=4840,freq=3.0), product of:
0.20701107 = queryWeight, product of:
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.048293278 = queryNorm
0.6960473 = fieldWeight in 4840, product of:
1.7320508 = tf(freq=3.0), with freq of:
3.0 = termFreq=3.0
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.09375 = fieldNorm(doc=4840)
0.11103962 = weight(_text_:22 in 4840) [ClassicSimilarity], result of:
0.11103962 = score(doc=4840,freq=4.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = 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)
0.33333334 = coord(1/3)
- Date
- 22. 2.2003 17:25:39
22. 2.2003 18:13:11
- Year
- 2002
-
Börner, K.; Chen, C.: Visual Interfaces to Digital Libraries : Motivation, Utilization, and Socio-technical Challenges (2002)
0.09
0.08504304 = product of:
0.25512913 = sum of:
0.25512913 = sum of:
0.1440895 = weight(_text_:2002 in 1359) [ClassicSimilarity], result of:
0.1440895 = score(doc=1359,freq=3.0), product of:
0.20701107 = queryWeight, product of:
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.048293278 = queryNorm
0.6960473 = fieldWeight in 1359, product of:
1.7320508 = tf(freq=3.0), with freq of:
3.0 = termFreq=3.0
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.09375 = fieldNorm(doc=1359)
0.11103962 = weight(_text_:22 in 1359) [ClassicSimilarity], result of:
0.11103962 = score(doc=1359,freq=4.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = 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)
0.33333334 = coord(1/3)
- Date
- 22. 2.2003 17:25:39
22. 2.2003 18:20:07
- Year
- 2002
-
Chen, C.: CiteSpace II : detecting and visualizing emerging trends and transient patterns in scientific literature (2006)
0.03
0.027245205 = product of:
0.08173561 = sum of:
0.08173561 = sum of:
0.049020246 = weight(_text_:2002 in 5272) [ClassicSimilarity], result of:
0.049020246 = score(doc=5272,freq=2.0), product of:
0.20701107 = queryWeight, product of:
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.048293278 = queryNorm
0.2368001 = fieldWeight in 5272, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.0390625 = fieldNorm(doc=5272)
0.03271536 = weight(_text_:22 in 5272) [ClassicSimilarity], result of:
0.03271536 = score(doc=5272,freq=2.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = 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)
0.33333334 = coord(1/3)
- 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
-
Chen, C.; Cribbin, T.; Macredie, R.; Morar, S.: Visualizing and tracking the growth of competing paradigms : two case studies (2002)
0.02
0.015501564 = product of:
0.04650469 = sum of:
0.04650469 = product of:
0.09300938 = sum of:
0.09300938 = weight(_text_:2002 in 602) [ClassicSimilarity], result of:
0.09300938 = score(doc=602,freq=5.0), product of:
0.20701107 = queryWeight, product of:
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.048293278 = queryNorm
0.44929665 = fieldWeight in 602, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.046875 = fieldNorm(doc=602)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Journal of the American Society for Information Science and technology. 53(2002) no.8, S.678.689
- Year
- 2002
-
Börner, K.; Chen, C.; Boyack, K.W.: Visualizing knowledge domains (2002)
0.01
0.0070043514 = product of:
0.021013053 = sum of:
0.021013053 = product of:
0.042026106 = sum of:
0.042026106 = weight(_text_:2002 in 4286) [ClassicSimilarity], result of:
0.042026106 = score(doc=4286,freq=3.0), product of:
0.20701107 = queryWeight, product of:
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.048293278 = queryNorm
0.20301381 = fieldWeight in 4286, product of:
1.7320508 = tf(freq=3.0), with freq of:
3.0 = termFreq=3.0
4.28654 = idf(docFreq=1652, maxDocs=44218)
0.02734375 = fieldNorm(doc=4286)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Year
- 2002
-
Liu, S.; Chen, C.: ¬The differences between latent topics in abstracts and citation contexts of citing papers (2013)
0.01
0.0054525603 = product of:
0.01635768 = sum of:
0.01635768 = product of:
0.03271536 = sum of:
0.03271536 = weight(_text_:22 in 671) [ClassicSimilarity], result of:
0.03271536 = score(doc=671,freq=2.0), product of:
0.16911483 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.048293278 = 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)
0.33333334 = coord(1/3)
- Date
- 22. 3.2013 19:50:00