Barigozzi, Matteo, Fagiolo, Giorgio and Mangioni, Giuseppe (2010) Identifying the community structure of the international-trade multi network. LEM working paper series , 2010/15. Sant'Anna School of Advanced Studies, Pisa, Italy.
We study the community structure of the multi-network of commodity-specific trade relations among world countries over the 1992-2003 period. We compare structures across commodities and time by means of the normalized mutual information index (NMI). We also compare them with exogenous community structures induced by geographical distances and regional trade agreements. We understand that commodity specific community structures are very heterogeneous and much more fragmented than that characterizing the aggregate ITN. This shows that the aggregate properties of the ITN may result (and be very different) from the aggregation of very diverse commodity-specific layers of the multi network. We also show that commodity-specific community structures, especially those related to the chemical sector, are becoming more and more similar to the aggregate one. Finally, our findings suggest that geographical distance is much more correlated with the observed community structure than regional-trade agreements. This result strengthens previous findings from the empirical literature on trade.
|Item Type:||Monograph (Working Paper)|
|Additional Information:||© 2010 Sant'Anna School of Advanced Studies|
|Uncontrolled Keywords:||networks, community structure, international-trade multi-network, normalized mutual information|
|Library of Congress subject classification:||H Social Sciences > HA Statistics
H Social Sciences > HB Economic Theory
|Sets:||Departments > Statistics
Collections > Economists Online
|Date Deposited:||07 Jan 2011 09:57|
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