A simple presentation of cocitation () and bibcoupling() functions
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Demostration of fundamental terms of scientometric analysis
- What is citing article, what is cited article ?
2)You will learn how to develop relations between articles who to not cite each other
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What is co-citation ?
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how to use igraph library in R to visualize co-citation Netwroks
For a more advanced take on weights in co-citations and bibliographic coupling, you may want to take a look at this article. The authors (colleagues of mine) suggest that normalising the weights by “fractionalizing” the weights might make more sense in some circumstances. That is, normally, the weight in bibliographic coupling between node i and j is defined as
w_{ij} = \sum_k A_{ik}A_{jk},
where A_{ik} = 1 if node i cites node k and 0 otherwise. With fractionalization, this would be defined as
w_{ij} = \sum_k \frac{A_{ik}A_{jk}}{d_k - 1}
where d_k = \sum_i A_{ik} is the in-degree of node k, or the number of times k is cited in this case.
Perhaps it would be of interest to also support this definition in igraph.
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I have used igraph with R in my article below. I would like thank developers of igrpah.
" Long term test-retest reliability of Oswestry Disability Index in male office workers"