A new multivariate linear model was proposed to associate viscosity and group composition of heavy oil. Multiple correlation coefficient of the model is 0.9885.
提出了一种能对稠油族组成与粘度进行较好关联的多元线性模型，其复相关系数为0.9885。
In this paper we define a class of biased linear estimators for the parameter matrix in the multivariate linear model with deficient rank and discuss some important properties.
本文对降秩多元线性模型的参数阵提出了一类有偏线性估计，讨论了许多重要的性质，从而把降秩模型中参数阵的估计问题转化为满秩模型中参数阵的估计问题。
Multivariate linear model of measurement of forest ecological benefit was set up according to index system of measurement.
按照以上建立的计量指标体系，建立了森林生态效益计量的多元线性模型。
Multivariate linear model of measurement of forest ecological benefit was set up according to index system of measurement.
按照以上建立的计量指标体系，建立了森林生态效益计量的多元线性模型。
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