英文标题：
《Quantifying invariant features of within-group inequality in consumption
across groups》
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作者：
Anindya S. Chakrabarti, Arnab Chatterjee, Tushar K. Nandi, Asim Ghosh,
Anirban Chakraborti
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最新提交年份：
2016
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英文摘要：
We study unit-level expenditure on consumption across multiple countries and multiple years, in order to extract invariant features of consumption distribution. We show that the bulk of it is lognormally distributed, followed by a power law tail at the limit. The distributions coincide with each other under normalization by mean expenditure and log scaling even though the data is sampled across multiple dimension including, e.g., time, social structure and locations. This phenomenon indicates that the dispersions in consumption expenditure across various social and economic groups are significantly similar subject to suitable scaling and normalization. Further, the results provide a measurement of the core distributional features. Other descriptive factors including those of sociological, demographic and political nature, add further layers of variation on the this core distribution. We present a stochastic multiplicative model to quantitatively characterize the invariance and the distributional features.
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中文摘要：
我们研究了多个国家和多个年份的单位水平消费支出，以提取消费分布的不变特征。我们证明了它的大部分是对数正态分布，然后在极限处出现幂律尾。在通过平均支出和对数标度进行标准化的情况下，分布相互吻合，即使数据是在多个维度上采样的，包括时间、社会结构和地点。这一现象表明，消费支出在不同社会和经济群体中的分散程度非常相似，但需要进行适当的调整和正常化。此外，研究结果还提供了核心分布特征的度量。其他描述性因素，包括社会学、人口统计和政治性质的因素，在这一核心分布上增加了更多层次的差异。我们提出了一个随机乘法模型来定量描述不变性和分布特征。
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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：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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