eprintid: 2386
rev_number: 11
eprint_status: archive
userid: 6
dir: disk0/00/00/23/86
datestamp: 2014-12-02 15:39:26
lastmod: 2014-12-18 13:55:36
status_changed: 2014-12-02 15:39:26
type: article
metadata_visibility: show
creators_name: Eom, Young-Ho
creators_name: Fortunato, Santo
creators_id: youngho.eom@imtlucca.it
creators_id: 
title: Characterizing and modeling citation dynamics
ispublished: pub
subjects: HA
subjects: QC
subjects: Z665
divisions: CSA
full_text_status: public
abstract: Citation distributions are crucial for the analysis and modeling of the activity of scientists. We investigated bibliometric data of papers published in journals of the American Physical Society, searching for the type of function which best describes the observed citation distributions. We used the goodness of fit with Kolmogorov-Smirnov statistics for three classes of functions: log-normal, simple power law and shifted power law. The shifted power law turns out to be the most reliable hypothesis for all citation networks we derived, which correspond to different time spans. We find that citation dynamics is characterized by bursts, usually occurring within a few years since publication of a paper, and the burst size spans several orders of magnitude. We also investigated the microscopic mechanisms for the evolution of citation networks, by proposing a linear preferential attachment with time dependent initial attractiveness. The model successfully reproduces the empirical citation distributions and accounts for the presence of citation bursts as well.
date: 2011
date_type: published
publication: PloS One
volume: 6
number: 9
publisher: Public Library of Science
pagerange: e24926
id_number: doi:10.1371/journal.pone.0024926
refereed: TRUE
issn: 1932-6203
official_url: http://dx.doi.org/10.1371/journal.pone.0024926
projects: This work was supported by the ICTeCollective, FET-Open grant number 238597 of the European Commission
citation:   Eom, Young-Ho and Fortunato, Santo  Characterizing and modeling citation dynamics.  PloS One, 6 (9).  e24926.  ISSN 1932-6203      (2011)  
document_url: http://eprints.imtlucca.it/2386/1/PloSOne_Eom_Fortunato_2011.pdf