Minimal Spanning Tree Graphs and Power Like Scaling in FOREX Networks |
| A.Z. Górski a, J. Kwapień a, P. Oświęcimka a and S. Drożdż a, b
a H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland b Institute of Physics, University of Rzeszów, 35-310 Rzeszów, Poland |
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| Received: 22 11 2007; |
| Correlation matrices of foreign exchange rate time series are investigated for 60 world currencies. Minimal spanning tree graphs for the gold, silver and platinum are presented. Inverse power like scaling is discussed for these graphs as well as for four distinct currency groups (major, liquid, less liquid and non-tradable). The worst scaling was found for USD and related currencies. |
| DOI: 10.12693/APhysPolA.114.531 PACS numbers: 89.65.Gh, 89.75.Fb, 05.45.Tp |