eprintid: 2689 rev_number: 11 eprint_status: archive userid: 69 dir: disk0/00/00/26/89 datestamp: 2015-05-20 12:04:10 lastmod: 2015-05-20 12:04:10 status_changed: 2015-05-20 12:04:10 type: article metadata_visibility: show creators_name: Zhu, Zhen creators_name: Puliga, Michelangelo creators_name: Cerina, Federica creators_name: Chessa, Alessandro creators_name: Riccaboni, Massimo creators_id: zhen.zhu@imtlucca.it creators_id: michelangelo.puliga@imtlucca.it creators_id: creators_id: alessandro.chessa@imtlucca.it creators_id: massimo.riccaboni@imtlucca.it title: Global Value Trees ispublished: pub subjects: HB subjects: HD28 divisions: EIC full_text_status: public abstract: 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 in- terested 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 evolution of the global production system. We find that the industry-level GVCs are in- deed 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 net- work centrality measures. Finally, we discuss some future applications of the GVTs. date: 2015-05 date_type: published publication: PloS One volume: 10 number: 5 publisher: Public Library of Science pagerange: 1-17 id_number: 10.1371/journal.pone.0126699 refereed: TRUE issn: 1932-6203 official_url: http://www.plosone.org/article/metrics/info:doi/10.1371/journal.pone.0126699 projects: CRISIS Lab projects: MULTIPLEX 317532 projects: SIMPOL 610704 citation: Zhu, Zhen and Puliga, Michelangelo and Cerina, Federica and Chessa, Alessandro and Riccaboni, Massimo Global Value Trees. PloS One, 10 (5). pp. 1-17. ISSN 1932-6203 (2015) document_url: http://eprints.imtlucca.it/2689/1/journal.pone.0126699.pdf