... 注水泥流变设计 rheological design of cementing 紊流顶替 turbulent flow displacement 模式选择系数 coefficient of model selection 接触时间 contact time ...
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To determine the rank of regression coefficient matrix in a multivariate linear regression model, a model selection procedure is proposed based on the M-estimation.
为了确定多重线性回归模型中回归系数矩阵的秩，本文提出了一个基于M估计的模型选择程序，且在较弱的条件下建立了回归系数矩阵的秩的估计的强相合性。
Then, builds the selection model of prefabricated element supplier base on VIKOR model, and calculates the weight coefficients based on variation coefficient method.
采用VIKOR模型建立预制构件供应商多指标评价模型，并采用客观赋权的变异系数法确定评价指标的权重系数。
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