In this paper, a degree-variable precision rough set model based on variable precision rough set and the degree of rough set is proposed by introducing a concept of error parameters.
在程度粗糙集和变精度粗糙集的基础上，通过引入误差参数，给出了一种新的程度变精度粗糙集模型并得出了所给模型上、下近似的一些性质。
By the utility of latent variable approach (LV) and state space model, the paper measures TFP growth from 1979 to 2008 in China in order to find the accounting error of GDP data.
运用隐性变量法通过建立状态空间模型测算中国1979 - 2008年间TF P增长率，分析GDP数据是否存在误差。
By the utility of latent variable approach (LV) and state space model, the paper measures TFP growth from 1979 to 2008 in China in order to find the accounting error of GDP data.
运用隐性变量法通过建立状态空间模型测算中国1979 - 2008年间TF P增长率，分析GDP数据是否存在误差。
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