Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-01-16
Eur Phys J B, 38, 363-371, (2004)
Physics
Condensed Matter
Statistical Mechanics
9 pages, 8 figures. Accepted for publication in EPJ B
Scientific paper
10.1140/epjb/e2004-00129-6
We review the recent approach of correlation based networks of financial equities. We investigate portfolio of stocks at different time horizons, financial indices and volatility time series and we show that meaningful economic information can be extracted from noise dressed correlation matrices. We show that the method can be used to falsify widespread market models by directly comparing the topological properties of networks of real and artificial markets.
Bonanno Giovanni
Caldarelli Guido
Lillo Fabrizio
Mantegna Rosario Nunzio
Micciche' Salvatore
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