Physics – Physics and Society
Scientific paper
2005-04-14
Journal of the American Society for Information Science and Technology, 58(11):1661--1673, 2007
Physics
Physics and Society
Scientific paper
Recently we proposed a model in which when a scientist writes a manuscript, he picks up several random papers, cites them and also copies a fraction of their references (cond-mat/0305150). The model was stimulated by our discovery that a majority of scientific citations are copied from the lists of references used in other papers (cond-mat/0212043). It accounted quantitatively for several properties of empirically observed distribution of citations. However, important features, such as power-law distribution of citations to papers published during the same year and the fact that the average rate of citing decreases with aging of a paper, were not accounted for by that model. Here we propose a modified model: when a scientist writes a manuscript, he picks up several random recent papers, cites them and also copies some of their references. The difference with the original model is the word recent. We solve the model using methods of the theory of branching processes, and find that it can explain the aforementioned features of citation distribution, which our original model couldn't account for. The model can also explain "sleeping beauties in science", i.e., papers that are little cited for a decade or so, and later "awake" and get a lot of citations. Although much can be understood from purely random models, we find that to obtain a good quantitative agreement with empirical citation data one must introduce Darwinian fitness parameter for the papers.
Roychowdhury Vwani P.
Simkin M. V.
No associations
LandOfFree
A mathematical theory of citing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A mathematical theory of citing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A mathematical theory of citing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-145874