eprintid: 1107 rev_number: 10 eprint_status: archive userid: 6 dir: disk0/00/00/11/07 datestamp: 2012-02-01 16:12:55 lastmod: 2014-12-18 15:56:24 status_changed: 2012-02-01 16:12:55 type: article metadata_visibility: show creators_name: De Masi, Giulia creators_name: Iori, Giulia creators_name: Caldarelli, Guido creators_id: creators_id: creators_id: guido.caldarelli@imtlucca.it title: Fitness model for the Italian interbank money market ispublished: pub subjects: HG subjects: QC divisions: EIC full_text_status: public keywords: PACS: 89.65.Gh, 02.50.−r, 05.45.Df note: © 2006 American Physical Society abstract: We use the theory of complex networks in order to quantitatively characterize the formation of communities in a particular financial market. The system is composed by different banks exchanging on a daily basis loans and debts of liquidity. Through topological analysis and by means of a model of network growth we can determine the formation of different group of banks characterized by different business strategy. The model based on Pareto’s law makes no use of growth or preferential attachment and it reproduces correctly all the various statistical properties of the system. We believe that this network modeling of the market could be an efficient way to evaluate the impact of different policies in the market of liquidity. date: 2006-12 date_type: published publication: Physical Review E volume: 74 number: 6 publisher: American Physical Society pagerange: 066112 id_number: 10.1103/PhysRevE.74.066112 refereed: TRUE issn: 1539-3755 official_url: http://dx.doi.org/10.1103/PhysRevE.74.066112 related_url_url: http://arxiv.org/abs/physics/0610108 citation: De Masi, Giulia and Iori, Giulia and Caldarelli, Guido Fitness model for the Italian interbank money market. Physical Review E, 74 (6). 066112. ISSN 1539-3755 (2006) document_url: http://eprints.imtlucca.it/1107/1/PhysRevE.Caldarelli_2006.pdf