摘要翻译：
有影响力的政治家所陈述的演讲可以对一个国家的未来产生决定性的影响。特别是，这类讲话的经济内容影响到各国的经济及其金融市场。为此，我们研究了一个新颖的数据集，该数据集包含了从乔治·华盛顿（1789年4月）到唐纳德·特朗普（2017年2月）的45位美国总统的951次演讲的经济内容。在这样做时，我们使用了一个通过文本挖掘技术实现的经济术语表。我们研究的目的是考察从总统演讲的经济内容中获得的网络中重要的相互联系的结构。在这种网络中，节点用谈话表示，链路用余弦相似度值表示，余弦相似度值用经济术语在讲话中的出现来计算。所得到的网络表现出由核心（即一组高度中心且紧密连接的节点）和外围（即一组非中心且稀疏连接的节点）组成的特殊结构。总统使用的不同经济词典的存在是核心-边缘结构的特征。属于网络核心的总统谈话分享了“利益”或“贸易”等通用（非技术）经济术语的用法。而使用更多技术性和不太频繁的术语则是边缘性的特征（例如“产量”）。此外，在时间上接近的演讲共享一本共同的经济词典。这些结果与美国繁荣和危机时期经济学词汇的使用情况一起，对总统演讲中经济内容之间的关系提供了独特的见解。
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英文标题：
《The interconnectedness of the economic content in the speeches of the US
  Presidents》
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作者：
Matteo Cinelli, Valerio Ficcadenti, Jessica Riccioni
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最新提交年份：
2020
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分类信息：

一级分类：Economics        经济学
二级分类：General Economics        一般经济学
分类描述：General methodological, applied, and empirical contributions to economics.
对经济学的一般方法、应用和经验贡献。
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一级分类：Computer Science        计算机科学
二级分类：Computers and Society        计算机与社会
分类描述：Covers impact of computers on society, computer ethics, information technology and public policy, legal aspects of computing, computers and education. Roughly includes material in ACM Subject Classes K.0, K.2, K.3, K.4, K.5, and K.7.
涵盖计算机对社会的影响、计算机伦理、信息技术和公共政策、计算机的法律方面、计算机和教育。大致包括ACM学科类K.0、K.2、K.3、K.4、K.5和K.7中的材料。
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一级分类：Quantitative Finance        数量金融学
二级分类：Economics        经济学
分类描述：q-fin.EC is an alias for econ.GN. Economics, including micro and macro economics, international economics, theory of the firm, labor economics, and other economic topics outside finance
q-fin.ec是econ.gn的别名。经济学，包括微观和宏观经济学、国际经济学、企业理论、劳动经济学和其他金融以外的经济专题
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英文摘要：
  The speeches stated by influential politicians can have a decisive impact on the future of a country. In particular, the economic content of such speeches affects the economy of countries and their financial markets. For this reason, we examine a novel dataset containing the economic content of 951 speeches stated by 45 US Presidents from George Washington (April 1789) to Donald Trump (February 2017). In doing so, we use an economic glossary carried out by means of text mining techniques. The goal of our study is to examine the structure of significant interconnections within a network obtained from the economic content of presidential speeches. In such a network, nodes are represented by talks and links by values of cosine similarity, the latter computed using the occurrences of the economic terms in the speeches. The resulting network displays a peculiar structure made up of a core (i.e. a set of highly central and densely connected nodes) and a periphery (i.e. a set of non-central and sparsely connected nodes). The presence of different economic dictionaries employed by the Presidents characterize the core-periphery structure. The Presidents' talks belonging to the network's core share the usage of generic (non-technical) economic locutions like "interest" or "trade". While the use of more technical and less frequent terms characterizes the periphery (e.g. "yield" ). Furthermore, the speeches close in time share a common economic dictionary. These results together with the economics glossary usages during the US periods of boom and crisis provide unique insights on the economic content relationships among Presidents' speeches.
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PDF链接：
https://arxiv.org/pdf/2002.07880