英文标题：
《Complexity, Centralization, and Fragility in Economic Networks》
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作者：
Carlo Piccardi, Lucia Tajoli
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最新提交年份：
2018
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英文摘要：
  Trade networks, across which countries distribute their products, are crucial components of the globalized world economy. Their structure is strongly heterogeneous across products, given the different features of the countries which buy and sell goods. By using a diversified pool of indicators from network science and product complexity theory, we quantitatively confirm the intuition that, overall, products with higher complexity -- i.e., with larger technological content and number of components -- are traded through a more centralized network -- i.e., with a small number of countries concentrating most of the export flow. Since centralized networks are known to be more vulnerable, we argue that the current composition of production and trading is associated to high fragility at the level of the most complex -- thus strategic -- products.
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中文摘要：
各国分销产品的贸易网络是全球化世界经济的重要组成部分。考虑到商品买卖国的不同特点，它们的结构在不同的产品中有很大的异质性。通过使用网络科学和产品复杂性理论中的多样化指标库，我们定量地证实了这样一种直觉，即总体而言，具有更高复杂性的产品（即具有更大的技术含量和组件数量）通过更集中的网络进行交易，即少数国家集中了大部分出口流量。由于集中式网络更容易受到攻击，我们认为，当前的生产和贸易构成与最复杂（因此是战略性）产品的高度脆弱性有关。
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分类信息：

一级分类：Physics        物理学
二级分类：Physics and Society        物理学与社会
分类描述：Structure, dynamics and collective behavior of societies and groups (human or otherwise). Quantitative analysis of social networks and other complex networks. Physics and engineering of infrastructure and systems of broad societal impact (e.g., energy grids, transportation networks).
社会和团体（人类或其他）的结构、动态和集体行为。社会网络和其他复杂网络的定量分析。具有广泛社会影响的基础设施和系统（如能源网、运输网络）的物理和工程。
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一级分类：Quantitative Finance        数量金融学
二级分类：General Finance        一般财务
分类描述：Development of general quantitative methodologies with applications in finance
通用定量方法的发展及其在金融中的应用
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