true variance是什么意思

网络释义

用法例句

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。

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。

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。

Application of variogram in interplation of abnormal space;

变异函数在异常空间插值中的应用

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

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

Analysis on the variation coefficient of response spectra of earthquake ground motions;

地震动反应谱变异系数分析

Investigation and Analysis of the Weight Variation Coefficient of the Silkworm Rearing with Artificial Diet;

人工饲料育家蚕体重变异系数调查与分析

The variation coefficients between body height and chest circumference were also analyzed.

具体讨论了中老年男性的体型特征,各类体型中身高与胸围的分布特征,身高与胸围的变异系数,体型特征的因子构成及因子中变量的相关关系等。

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。

The variant function is the core of geostatistics.

变异函数是地质统计学的核心部分。

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。

Boundary Points Detection Algorithm Based on Coefficient of Variation

基于变异系数的边界点检测算法

Relationships between coefficient of variation of diameter and height and competition index of main coniferous trees in Changbai Mountains

长白山主要针叶树种胸径和树高变异系数与竞争因子的关系

Study on coefficient of variation of bone mineral density by Prodigy-DXA measurement

Prodigy型骨密度仪测量骨密度的变异系数研究

Variation Function S-Rough Sets of the Variable Precision And Its F-Structure;

变精度变异函数S-粗集与F-结构

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

Fitting varigram of coal bed evaluation with GEO-EAS software

应用GEO-EAS拟合煤矿床估值中变异函数

Nested Overlap of Variograms in 3D Kriging

三维Kriging方法中的变异函数套合

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

Simple Crick method is fit for soil moistureforecasting in region and the forecasting error in half-variation triangle function model is less.

使用简单克里格法时,半变异函数模型为三角函数的预测误差小。

The variation is the core and basic tool of geostatistics.

变异函数是地质统计学的核心和基本工具。

APPLICATION OF VARIATION FUNCTION IN BEICHANG ORE SEGMEN OF LANPING Pb-Zn MINE

变异函数在兰坪铅锌矿北厂矿段中的应用

Equivalent Elliptic Nested Structure and Its Application in Variogram Nesting

空间变异函数等效应椭圆套合方法及其应用

Application of Variogram in the Reserve Evaluation of An Orebody of Dachang Tin Deposit in Guangxi

变异函数在广西大厂锡矿田X号矿体中的应用

Variational Studies on the Potential Energy Functions of Some Heteronuclear Diatomic Molecules;

异核双原子分子势能函数的变分研究

On an Extension of Variant of Jensen s Inequality for Convex Function;

关于凸函数的变异Jensen不等式的推广

A Simple Method to Solve the Problem of Beam-deformed-Strange Function;

求梁变形的一种简单方法—奇异函数法

Two Problems on Solving the Deformations of Step Beams by Singular Functions

关于用奇异函数求解阶梯形梁变形的两个问题

A Study of Crust Anisotropy Using Azimuthal Pattern of Receiver Functions;

利用接收函数方位变化研究地壳各向异性

Real Variable Function & Functional Analysis

实变函数与泛函分析

An exponential function is one in which the variable appears in an exponent.

指数函数是指数中出现变量的函数。

It Use the Singular Function to Deal with fhe Deformation of Variable Cross - sectionBeam under fhe Sction kf a Complicaed Load Automatically;

利用奇异函数自动处理变截面梁在复杂载荷作用下的变形