Least square regression Expanded Linear Expenditure System (ELES) model is the measuring method frequently used in consumption structure study done by means of sectional data.Sometimes there is the problem of insignificance of the constant in the process
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韩振国.扩展线性支出系统模型估计方法的修正及实证检验[J].重庆工商大学学报(自然科学版),2007,(1): HAN Zhen-guo. Expanded Linear Expenditure System Model:Correction and Test with Examples[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2007,(1):