eff efficiency 中文意思是什麼
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Abstract : for the linear weighted regression model, influence measure of covariance matr ix perturbation and estimate efficiency of regression parameter have been analyz ed on the basis of the regression diagnosis, and the lower bounds of the two eff iciencies have been given
文摘:針對線性加權回歸模型，從統計診斷的角度分析了協方差陣擾動的影響度量和回歸系數的估計效率，並給出了2種效率的下界 -
Efficiency ( eff ) efficiency is the ratio of energy output to energy input, such as the ratio between the electrical energy input to a motor and the mechanical energy output at the shaft of the motor
效率效率是輸出能量與輸入能量的比率，例如輸入到電動機的電能與電機軸承輸出的機械能的之間的比率。
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