-
Hu, X.; Rousseau, R.; Chen, J.: ¬A new approach for measuring the value of patents based on structural indicators for ego patent citation networks (2012)
0.02
0.019182019 = product of:
0.057546057 = sum of:
0.057546057 = product of:
0.11509211 = sum of:
0.11509211 = weight(_text_:networks in 445) [ClassicSimilarity], result of:
0.11509211 = score(doc=445,freq=4.0), product of:
0.22247115 = queryWeight, product of:
4.72992 = idf(docFreq=1060, maxDocs=44218)
0.047034867 = queryNorm
0.517335 = fieldWeight in 445, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.72992 = idf(docFreq=1060, maxDocs=44218)
0.0546875 = fieldNorm(doc=445)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Abstract
- Technology sectors differ in terms of technological complexity. When studying technology and innovation through patent analysis it is well known that similar amounts of technological knowledge can produce different numbers of patented innovation as output. A new multilayered approach to measure the technological value of patents based on ego patent citation networks (PCNs) is developed in this study. The results show that the structural indicators for the ego PCN developed in this contribution can characterize groups of patents and, hence, in an indirect way, the health of companies.
-
Egghe, L.; Rousseau, R.: ¬A measure for the cohesion of weighted networks (2003)
0.01
0.013701442 = product of:
0.041104324 = sum of:
0.041104324 = product of:
0.08220865 = sum of:
0.08220865 = weight(_text_:networks in 5157) [ClassicSimilarity], result of:
0.08220865 = score(doc=5157,freq=4.0), product of:
0.22247115 = queryWeight, product of:
4.72992 = idf(docFreq=1060, maxDocs=44218)
0.047034867 = queryNorm
0.369525 = fieldWeight in 5157, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.72992 = idf(docFreq=1060, maxDocs=44218)
0.0390625 = fieldNorm(doc=5157)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Abstract
- Measurement of the degree of interconnectedness in graph like networks of hyperlinks or citations can indicate the existence of research fields and assist in comparative evaluation of research efforts. In this issue we begin with Egghe and Rousseau who review compactness measures and investigate the compactness of a network as a weighted graph with dissimilarity values characterizing the arcs between nodes. They make use of a generalization of the Botofogo, Rivlin, Shneiderman, (BRS) compaction measure which treats the distance between unreachable nodes not as infinity but rather as the number of nodes in the network. The dissimilarity values are determined by summing the reciprocals of the weights of the arcs in the shortest chain between two nodes where no weight is smaller than one. The BRS measure is then the maximum value for the sum of the dissimilarity measures less the actual sum divided by the difference between the maximum and minimum. The Wiener index, the sum of all elements in the dissimilarity matrix divided by two, is then computed for Small's particle physics co-citation data as well as the BRS measure, the dissimilarity values and shortest paths. The compactness measure for the weighted network is smaller than for the un-weighted. When the bibliographic coupling network is utilized it is shown to be less compact than the co-citation network which indicates that the new measure produces results that confirm to an obvious case.
-
Liu, Y.; Rafols, I.; Rousseau, R.: ¬A framework for knowledge integration and diffusion (2012)
0.01
0.011626059 = product of:
0.034878176 = sum of:
0.034878176 = product of:
0.06975635 = sum of:
0.06975635 = weight(_text_:networks in 297) [ClassicSimilarity], result of:
0.06975635 = score(doc=297,freq=2.0), product of:
0.22247115 = queryWeight, product of:
4.72992 = idf(docFreq=1060, maxDocs=44218)
0.047034867 = queryNorm
0.31355235 = fieldWeight in 297, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.72992 = idf(docFreq=1060, maxDocs=44218)
0.046875 = fieldNorm(doc=297)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Abstract
- Purpose - This paper aims to introduce a general framework for the analysis of knowledge integration and diffusion using bibliometric data. Design/methodology/approach - The authors propose that in order to characterise knowledge integration and diffusion of a given issue (the source, for example articles on a topic or by an organisation, etc.), one has to choose a set of elements from the source (the intermediary set, for example references, keywords, etc.). This set can then be classified into categories (cats), thus making it possible to investigate its diversity. The set can also be characterised according to the coherence of a network associated to it. Findings - This framework allows a methodology to be developed to assess knowledge integration and diffusion. Such methodologies can be useful for a number of science policy issues, including the assessment of interdisciplinarity in research and dynamics of research networks. Originality/value - The main contribution of this article is to provide a simple and easy to use generalisation of an existing approach to study interdisciplinarity, bringing knowledge integration and knowledge diffusion together in one framework.
-
Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012)
0.01
0.010620959 = product of:
0.031862877 = sum of:
0.031862877 = product of:
0.063725755 = sum of:
0.063725755 = weight(_text_:22 in 4992) [ClassicSimilarity], result of:
0.063725755 = score(doc=4992,freq=2.0), product of:
0.1647081 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.047034867 = queryNorm
0.38690117 = fieldWeight in 4992, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=4992)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 14. 2.2012 12:53:22
-
Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996)
0.01
0.0063725756 = product of:
0.019117726 = sum of:
0.019117726 = product of:
0.038235452 = sum of:
0.038235452 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
0.038235452 = score(doc=7659,freq=2.0), product of:
0.1647081 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.047034867 = queryNorm
0.23214069 = fieldWeight in 7659, 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=7659)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Source
- Journal of information science. 22(1996) no.3, S.165-170
-
Asonuma, A.; Fang, Y.; Rousseau, R.: Reflections on the age distribution of Japanese scientists (2006)
0.01
0.0063725756 = product of:
0.019117726 = sum of:
0.019117726 = product of:
0.038235452 = sum of:
0.038235452 = weight(_text_:22 in 5270) [ClassicSimilarity], result of:
0.038235452 = score(doc=5270,freq=2.0), product of:
0.1647081 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.047034867 = queryNorm
0.23214069 = fieldWeight in 5270, 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=5270)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 22. 7.2006 15:26:24
-
Ahlgren, P.; Jarneving, B.; Rousseau, R.: Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient (2003)
0.00
0.0042483835 = product of:
0.01274515 = sum of:
0.01274515 = product of:
0.0254903 = sum of:
0.0254903 = weight(_text_:22 in 5171) [ClassicSimilarity], result of:
0.0254903 = score(doc=5171,freq=2.0), product of:
0.1647081 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.047034867 = queryNorm
0.15476047 = fieldWeight in 5171, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03125 = fieldNorm(doc=5171)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 9. 7.2006 10:22:35
