英文标题：
《A data driven network approach to rank countries production diversity
and food specialization》
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作者：
Chengyi Tu, Joel Carr, Samir Suweis
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最新提交年份：
2016
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英文摘要：
The easy access to large data sets has allowed for leveraging methodology in network physics and complexity science to disentangle patterns and processes directly from the data, leading to key insights in the behavior of systems. Here we use to country specific food production data to study binary and weighted topological properties of the bipartite country-food production matrix. This country-food production matrix can be: 1) transformed into overlap matrices which embed information regarding shared production of products among countries, and or shared countries for individual products, 2) identify subsets of countries which produce similar commodities or subsets of commodities shared by a given country allowing for visualization of correlations in large networks, and 3) used to rank country\'s fitness (the ability to produce a diverse array of products weighted on the type of food commodities) and food specialization (quantified on the number of countries producing that food product weighted on their fitness). Our results show that, on average, countries with high fitness producing highly specialized food commodities also produce low specialization goods, while nations with low fitness producing a small basket of diverse food products, typically produce low specialized food commodities.
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中文摘要：
对大型数据集的方便访问使我们能够利用网络物理和复杂性科学中的方法，直接从数据中分离模式和过程，从而获得系统行为的关键见解。在这里，我们使用特定国家的粮食生产数据来研究二部国家粮食生产矩阵的二元和加权拓扑性质。该国家粮食生产矩阵可以：1）转换为重叠矩阵，其中嵌入了国家间产品共享生产的信息，以及或单个产品的共享国家；2）确定生产类似商品的国家子集或特定国家共享的商品子集，以便在大型网络中可视化相关性，（3）用于对国家的健康状况（根据食品商品类型加权生产各种产品的能力）和食品专业化程度（根据根据健康状况加权生产该食品的国家数量进行量化）进行排名。我们的结果表明，平均而言，生产高度专业化食品的高适应性国家也生产低专业化产品，而生产一小篮多样化食品的低适应性国家通常生产低专业化食品。
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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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