deviation coefficient meaning in English
自差系数
Examples
- Discusses the characteristic values on individual stock risk with the standard deviation , variance ( 2 ) , standard deviation coefficient ( cv ) and coefficient measurement , construct the individual on stock ' s statistics index system on investment risk . 2 . discuss the characteristic of standard deviation , variance , variance - covariance matrix to measure the investment risk of stock portfolio
第二章“证券投资风险的度量”分为三个小节： 1 、讨论单个证券风险用标准差( ) 、方差( ~ 2 ) 、变差系数( cv )以及系数度量，构造了单个证券的投资风险统计指标体系； 2 、讨论了用标准差和方差、方差?协方差矩阵、方差?协方差矩阵的特征值来度量组合证券的投资风险； 3 、计算了衡量证券组合系统性风险的系数值，并分析了系数的含义和预测能力的可靠性。 - Three characteristic features , such as average velocity of sound , deviation coefficient of sound velocity , and deviation coefficient of amplitude are extracted from four kinds of testing data which are sound velocity , amplitude , frequency and waveform in this paper . fuzzy analysis and artificial neural network are combined to form an intelligent system with similar functions to human brain to classify grc , aerated concrete , hollow brick , solid brick and concrete block . the accuracy of this system is up to 95 % in field tests
由超声脉冲法获得4种检测信息声速、波幅、频率和波形，从中提取3个特征量：平均声速、声速的离差系数和波幅的离差系数，利用模糊分析方法和人工神经网络相结合对grc 、加气混凝土、空心砖、实心砖、砌块5种墙体材料进行种类识别，形成一个智能化的、具有类似人脑功能的系统.经现场实测证明，判别的准确率达95 %以上。