《Universal fluctuations in growth dynamics of economic systems》
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作者:
Nathan C. Frey, Sakib Matin, H. Eugene Stanley, Michael Salinger
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最新提交年份:
2018
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英文摘要:
The growth of business firms is an example of a system of complex interacting units that resembles complex interacting systems in nature such as earthquakes. Remarkably, work in econophysics has provided evidence that the statistical properties of the growth of business firms follow the same sorts of power laws that characterize physical systems near their critical points. Given how economies change over time, whether these statistical properties are persistent, robust, and universal like those of physical systems remains an open question. Here, we show that the scaling properties of firm growth previously demonstrated for publicly-traded U.S. manufacturing firms from 1974 to 1993 apply to the same sorts of firms from 1993 to 2015, to firms in other broad sectors (such as materials), and to firms in new sectors (such as Internet services). We measure virtually the same scaling exponent for manufacturing for the 1993 to 2015 period as for the 1974 to 1993 period and virtually the same scaling exponent for other sectors as for manufacturing. Furthermore, we show that fluctuations of the growth rate for new industries self-organize into a power law over relatively short time scales.
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中文摘要:
企业的成长是一个复杂交互单元系统的例子,它类似于自然界中的复杂交互系统,如地震。值得注意的是,经济物理学的工作提供了证据,证明企业增长的统计特性遵循着相同的幂律,这些幂律描述了接近临界点的物理系统。考虑到经济是如何随时间变化的,这些统计特性是否像物理系统一样具有持久性、鲁棒性和普遍性仍然是一个悬而未决的问题。在此,我们表明,1974年至1993年间,美国制造业上市公司的公司增长规模特性适用于1993年至2015年间的同类公司、其他广泛行业的公司(如材料)和新行业的公司(如互联网服务)。我们测量的1993年至2015年制造业的比例指数与1974年至1993年期间几乎相同,其他行业的比例指数与制造业的比例指数几乎相同。此外,我们还表明,新产业增长率的波动在相对较短的时间尺度上自组织成幂律。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Statistical Finance 统计金融
分类描述:Statistical, econometric and econophysics analyses with applications to financial markets and economic data
统计、计量经济学和经济物理学分析及其在金融市场和经济数据中的应用
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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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Universal_fluctuations_in_growth_dynamics_of_economic_systems.pdf
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