We show that the PageRank in a network can be represented as the solution of a differential equation discretized over a directed graph. By exploiting a formal relationship with the time-independent Schrodinger equation it is possible to interpret hub formation and related phenomena as a wave-like localization process in the presence of disorder and trapping potentials. The result opens new perspectives in the physics of networks with interdisciplinary connections and opens the way to the employment of various mathematical techniques to the analysis of self-organization in structured systems. Applications are envisaged in the World-Wide Web, traffic, social and biological networks. Copyright (C) EPLA, 2009
PageRank equation and localization in the WWW / N., Perra; V., Zlatic; A., Chessa; Conti, Claudio; D., Donato; G., Caldarelli. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - STAMPA. - 88:4(2009), p. 48002. [10.1209/0295-5075/88/48002]
PageRank equation and localization in the WWW
CONTI, CLAUDIO;
2009
Abstract
We show that the PageRank in a network can be represented as the solution of a differential equation discretized over a directed graph. By exploiting a formal relationship with the time-independent Schrodinger equation it is possible to interpret hub formation and related phenomena as a wave-like localization process in the presence of disorder and trapping potentials. The result opens new perspectives in the physics of networks with interdisciplinary connections and opens the way to the employment of various mathematical techniques to the analysis of self-organization in structured systems. Applications are envisaged in the World-Wide Web, traffic, social and biological networks. Copyright (C) EPLA, 2009I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
