1) different transfer fun ction
异变换函数
2) variation function
变异函数
1.
The objective function of NN was modified by variation function and the NN was trained of global optimization by genetic algorithm(GA) in this method.
针对克里金法具有平滑性、神经网络难以反映变量的空间相关性等缺点,用变异函数修正了神经网络的目标函数,并利用遗传算法对神经网络进行全局优化,形成了一种遗传神经克里金混合插值方法。
2.
From the characteristics of the variation function and fractal dimension,the comparative research on the old veins V1,V2,V3 and V4 with new veins V7 and V8 in the deep of Xiangxi gold deposit was carried out.
从变异函数特征和分形维数特征方面,对在湘西金矿深部新发现的V7和V8矿脉与原有的V1,V2,V3和V4矿脉的成矿特征进行对比研究。
3.
The thesis is carried out to investigate the spatial heterogeneity of the density of the solid in suspension in the water of the seacoast in Fuqing city,utilizing the variation function of the geo-statistics.
本文利用地统计学提供的变异函数研究了福清市近岸水体悬浮固体浓度的空间异质性。
3) variogram
['vɛəriə,ɡræm]
变异函数
1.
Application of variogram in interplation of abnormal space;
变异函数在异常空间插值中的应用
2.
Application of accelerating genetic algorithm to optimizing variogram parameters;
加速遗传算法在变异函数参数优化中的应用
3.
Preliminary Study on Space Variability of Water-Salt and Robust Variogram;
水盐空间变异性与稳健变异函数的初步研究
4) Variant function
变异函数
1.
Directed by the theories and methods of geostatistics, the variant function of ore body form of Qinshuigou phosphorus deposit is calculated.
用地质统计学的理论和方法,计算并拟合了清水沟磷矿矿体走向、倾向、厚度三个方向的变异函数,建立了矿床数学经济模型,并计算了磷矿石的储量和剥采比,为提高矿山生产的经济效益、充分合理利用矿产资源提供了科学依据。
2.
The variant function is the core of geostatistics.
变异函数是地质统计学的核心部分。
3.
Based on practical variograms,parameters of variant functions can be estimated more precisely,more automatically by genetic algorithms than by our traditional linear regression method.
半变异函数是Kriging空间分析法中的重要数学模型,在得到实际变异函数图的基础上用遗传算法来估计半变异函数中的参数比用传统的线形回归方法更精确更自动化。
5) Variance function
变异函数
1.
Taking a copper mine as an example,based on geostatistics theory and method,a mathematic model and an entity engineering model have been established by using mining software,with some variance function representing regionalized variable characteristics.
以某铜矿为例,基于地质统计学理论和方法,应用能够反映区域化变量特征的变异函数,利用矿业软件,建立了矿山矿床的数学模型和工程实体模型。
2.
The variance function of single deformation motioning point is structured,based on subsidence deformation data of one mine.
对单点变异函数模型及变异函数的套合理论进行介绍,以某矿沉降变形数据为例,建立区域内单个变形监测点的变异函数,借助套合理论建立区域性通用变异函数。
6) Semivariogram
变异函数
1.
Based on the resources monitoring survey data of December 2002 at 121 sites of East China Sea,and by using the theory of geostatistics,this paper simulated the models of semivariograms for the density distribution of Todarodes pacificus,with semivariogram parameters and fractal dimension calculated,and the relationships between spatial pattern and environment studied.
运用地统计学的方法,根据2002年12月东海区121个站位的资源监测调查数据,拟合变异函数最优模型,计算各向同性下的模型参数和不同方向上的分维数,分析了冬季东海北部和南部太平洋褶柔鱼的空间异质性特征,并进一步探讨了其空间格局与环境的关系。
2.
Based on the analyses of the non-spatial statistical distribution pattern,the spatial trend fitting model and the semivariogram fitting model of the samples,then the parameters for the universal Kriging interpolation algorithm are set to calculate the soil equivalent shear wave velocity of points without the data of the bored holes.
在研究了样本的统计分布规律、空间趋势面拟合模型、变异函数拟合模型的基础上,设定泛克里格插值算法的各个参数,计算未知点的土层等效剪切波速。
补充资料：Radon变换和逆Radon变换
Radon变换和逆Radon变换
X线物理学术语。CT重建图像成像的主要理论依据之一。1917年澳大利亚数学家Radon首先论证了通过物体某一平面的投影重建物体该平面两维空间分布的公式。他的公式要求获得沿该平面所有可能的直线的全部投影(无限集合)。所获得的投影集称为Radon变换。由Radon变换进行重建图像的操作则称为逆Radon变换。Radon变换和逆Radon变换对CT成像的意义在于，它从数学原理上证实了通过物体某一断层层面“沿直线衰减分布的投影”重建该层面单位体积，即体素的线性衰减系数两维空间分布的可能性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条