Model of Wikipedia growth based on information exchange via reciprocal arcs
Theoretical Physics Division, Rudjer Bošković Institute - P.O. Box 180, HR-10002 Zagreb, Croatia
2 INFM-CNR Centro SMC Dipartimento di Fisica, Sapienza Università di Roma - Piazzale Moro 5, 00185 Roma, Italy, EU
Accepted: 10 February 2011
We show how reciprocal arcs significantly influence the structural organization of Wikipedias, online encyclopedias. It is shown that random addition of reciprocal arcs in the static network cannot explain the observed reciprocity of Wikipedias. A model of Wikipedia growth based on preferential attachment and on information exchange via reciprocal arcs is presented. An excellent agreement between in-degree distributions of our model and real Wikipedia networks is achieved without fitting the distributions, but by merely extracting a small number of model parameters from the measurement of real networks.
PACS: 89.20.Hh – World Wide Web, Internet / 89.65.-s – Social and economic systems / 05.65.+b – Self-organized systems
© EPLA, 2011