1)quasi-gradient拟梯度
1.To enhancing accuracy and efficiency of sensitivity analysis in optimization,three numerical methods:quasi-gradient,complex-step derivative and automatic differentiation,are studied and compared form theory,implementations and applications.为提高优化方法中敏度计算的精度和效率,比较研究了拟梯度、复数步长微分和自动微分三种数值方法原理及实现。
英文短句/例句
1.The Pseudo-gradient Technology and Its Application in Swarm Optimization;拟梯度技术及其在群体搜索中的应用
2.Numerical simulation of effect of temperature gradient on rolling of magnesium alloy sheets温度梯度对镁合金板材轧制影响的数值模拟
3.LARGE-EDDY SIMULATION OF LAMINAR SEPARATION BUBBLE TRANSITION UNDER ADVERSE PRESSURE GRADIENT逆压梯度下层流分离泡转捩的大涡模拟
4.Research of Intelligent Elevator Group Control Dispatching Methods in Virtual Simulation Environment;虚拟环境下智能电梯群控调度方法的研究
5.Numerical Simulation for the Shape of Drop on the Gradient Surface;梯度表面能材料表面液滴形貌的数值模拟
6.Runoff Stochastic Generation and Mid-long Term Optimized Operation of Cascaded Hydroelectric Plant;梯级水电站群径流随机模拟及中长期优化调度
7.The Numerical Simulation of Quasi-Isentropic Compression Via Graded Impedence Flyer;利用阻抗梯度法实现准等熵压缩的数值模拟
8.Numerical Simulation for Concrete Material Based on Gradient Damage Model;基于隐式梯度模型混凝土损伤的数值模拟
9.Modelling Full-tensor Gravity Gradient Maps for Gravity Matching Navigation重力场匹配导航的全张量重力梯度基准图模拟
10.B-Spline Curve Fitting Based on Gradient Vector Flow Deformable Models基于梯度矢量流变形轮廓的B样条曲线拟合
11.THE METHOD OF CHARACTERIZATION AND PHYSICAL SIMULATION OF TPG FOR ORDINARY HEAVY OIL普通稠油启动压力梯度表征及物理模拟方法
12.Phase-field Simulation of Influence of Solute Gradient to Process of Non-Isothermal Solidification溶质梯度影响非等温凝固过程的相场法模拟
13.A QUASI-MINIMIZED LEFT CONJUGATE GRADIENT METHOD AND ITS NUMERICAL BEHAVIOR一个拟极小化左共轭梯度算法及其数值表现
14.Existence of Multiple Solutions for Quasilinear Elliptic Problems with Gradient Term带梯度项的拟线性椭圆问题的多解存在性
15.Numerical Simulation of Temperature Field and Residual Stress Field for Reactive Flame Spraying Synthesis TiC-Ni Function Gradient Coating反应火焰喷涂TiC-Ni功能梯度涂层温度场和残余应力场数值模拟
16.Pitzer-Debye-Huckel Limiting Slopes for Water and Equations of Least-squares Camber Fitting水的Pitzer-Debye-Hückel极限梯度及最小二乘曲面拟合多项式
17.Compared with passivity-based stability analysis method, a force filtering method based on force-position gradient is proposed.给出了基于虚拟力信号空间梯度的消除振荡的方法.
18.The Simulation of active control of FGM plates/shells via a solid shell element基于固体壳单元的功能梯度材料板壳主动控制模拟仿真
相关短句/例句
Gradient Simulating Method梯度模拟法
3)simulation of gradient梯度随机模拟
4)quasi-threshold pressure gradient拟启动压力梯度
1.Non-Darcy flow quasi-threshold pressure gradient experimental study for low permeability soft rock;低渗透软弱岩非达西渗流拟启动压力梯度试验研究
5)monte-carlo simulation of gradient梯度的随机模拟
6)gradient-simulated annealing algorithm梯度-模拟退火算法
延伸阅读
变量-梯度法变量-梯度法variablegradient method (6)。于是得v一户，，d，;+f x22剐么一冬对+二:。在 J 0 JO‘l一ZxlxZ>o范围内，系统的平衡状态是稳定的。若另取al，~ 2(l一二，xZ)2 一xf(1一x:x:)2，己21= xl(l一x，xZ)2，则可求得另一个v函数宕氛-、式，约束条件为1一xlxZ>o，比前一个还好。b一anl一ong一t一dufo变t一梯度法(variable一gradient method) 对非线性系统云一f(x)，了(0)~0选择李雅普诺夫函数的一种方法。 令v(x)为一备择的李雅普诺夫函数(见李稚普诺夫方法)，V(x)可表示为 弃.那.弃. V(x)=于x，+升x:+…+笋x，(l) axl一‘’axZ一‘’‘肚一”X XX陌以尸|阮 一一 「“人，、、，，，、}刁‘g、·，一‘rad“气‘，一} 口V/ax，V/a xZ 月 X 日.…Z了 V于是，式(1)可写作 v(x)一比(x)」T毖对上式两边积分，可得李雅普诺夫函数(3)V‘x，一上罕d: 一J;「:(·)〕·瓮d，一{:仁，‘X，〕T“(4)这是从状态空间原点到一任意点(x，，xZ，…，x，)的线积分。由式(3)有比(x)〕Tdx二dV(x)，式(4)中的积分与积分路径无关。最简单的积分路径是沿状态向量x的诸分量方向(xl，xZ，…，x二)顺序进行式(4)中积分的计算，即v(X)一{;〔:(X):·‘X一{:’、1(“1，。，…，。)‘“】 +J:292‘Xl，6z，0，一O，d“2+…5)并一必+{;”g。(Xl，XZ，X3，··一氏，d氏于是，变量一梯度法工作就要选择一向量函数g(x)将这一函数按式(5)积分以获得标量函数V(x)。
