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第62行： − − 在其严格的数学定义中，经济复杂性指数是根据连接国家与国家的矩阵的特征向量定义的，这是连接国家与其出口产品的矩阵的投影。由于欧洲出口信息中心审查关于国家多样性和产品普遍性的信息，因此能够产生一种衡量经济复杂性的尺度，其中既包括关于一国出口多样性的信息，也包括关于其复杂性的信息。例如，日本或德国的出口信用指数较高，出口的许多商品普遍性较低，而且是由高度多样化的国家生产的，这表明这些国家是多样化和先进的经济体。出口信用保险指数低的国家，如安哥拉或赞比亚，只出口少数产品，这些产品普遍性较高，出口国不一定非常多样化，这表明这些国家没有多样性，出口的产品也不十分复杂。
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In its strict mathematical definition, the ECI is defined in terms of an eigenvector of a matrix connecting countries to countries, which is a projection of the matrix connecting countries to the products they export. Since the ECI considers information on the diversity of countries and the ubiquity of products, it is able to produce a measure of economic complexity containing information about both the diversity of a country's export and their sophistication. For example, Japan or Germany, with high ECIs, export many goods that are of low ubiquity and that are produced by highly diversified countries, indicating that these are diverse and sophisticated economies. Countries with low ECI, like Angola or Zambia, export only a few products, which are of relatively high ubiquity and which are exported by countries that are not necessarily very diversified, indicating that these are countries that have little diversity and that the products that they export are not very sophisticated.
In its strict mathematical definition, the ECI is defined in terms of an eigenvector of a matrix connecting countries to countries, which is a projection of the matrix connecting countries to the products they export. Since the ECI considers information on the diversity of countries and the ubiquity of products, it is able to produce a measure of economic complexity containing information about both the diversity of a country's export and their sophistication. For example, Japan or Germany, with high ECIs, export many goods that are of low ubiquity and that are produced by highly diversified countries, indicating that these are diverse and sophisticated economies. Countries with low ECI, like Angola or Zambia, export only a few products, which are of relatively high ubiquity and which are exported by countries that are not necessarily very diversified, indicating that these are countries that have little diversity and that the products that they export are not very sophisticated.
在其严格的数学定义中，经济复杂性指数是连接国家与国家之间的矩阵的特征向量来定义的，是连接国家与其出口产品的矩阵投影。
在其严格的数学定义中，经济复杂性指数是连接国家与国家之间的矩阵的特征向量来定义的，是连接国家与其出口产品的矩阵投影。