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Global value trees

Zhu, Zhen and Puliga, Michelangelo and Cerina, Federica and Chessa, Alessandro and Riccaboni, Massimo Global value trees. EIC working paper series #11/2014 IMT Institute for Advanced Studies Lucca ISSN 2279-6894.

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The fragmentation of production across countries has become an important feature of the globalization in recent decades and is often conceptualized by the term, global value chains (GVCs). When empirically investigating the GVCs, previous studies are mainly interested in knowing how global the GVCs are rather than how the GVCs look like. From a complex networks perspective, we use the World Input-Output Database (WIOD) to study the global production system. We find that the industry-level GVCs are indeed not chain-like but are better characterized by the tree topology. Hence, we compute the global value trees (GVTs) for all the industries available in the WIOD. Moreover, we compute an industry importance measure based on the GVTs and compare it with other network centrality measures. Finally, we discuss some future applications of the GVTs.

Item Type: Working Paper (EIC working paper series)
Uncontrolled Keywords: Keywords: Complex Networks; Tree; Input-Output; Value-Added; Globalization - JEL Codes: C67, F10, F15 - PACS numbers: 89.65.Gh; 89.75.-k; 05.10.-a
Subjects: H Social Sciences > HB Economic Theory
H Social Sciences > HD Industries. Land use. Labor
Research Area: Economics and Institutional Change
Depositing User: Ms T. Iannizzi
Date Deposited: 20 Oct 2014 13:11
Last Modified: 20 Oct 2014 13:11
URI: http://eprints.imtlucca.it/id/eprint/2325

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