查询词典 asymptotic convergence

Firstly, the authors create various initial colonies and introduce quinary coding strategy to improve searching speed. Then, they adopt random selection mechanism without reimbursement to prevent premature convergence. Twopoint crossover and multipoint mutation are adopted to extend searching range of model space and to keep individual diversity.

首先，产生多样化的初始群体，引入五进制的编码策略提高搜索速度，然后采用无退还随机选择机制防止收敛早熟，采取两点交叉及多点变异方案以扩大模型空间的搜索范围和保持个体的多样性。

Firstly, a quintic PH-spline curve is used to approximate a cubic Bézier curve within a bound. The convergence for the approximation is proved.

研究用C1连续的五次Pythagorean-Hodograph样条曲线逼近一给定的三次Bézier曲线，证明了这种逼近算法在常用误差测度下的收敛性。

On the basis of comparison of several algorithms of the calculation of unstable resonator"s mode. Fast Fourier transform method is chosen in this paper. The model of multi-layer distribution of gain is established. Sampling granularity in real space used in FFT, quotient of guard band and distance between subsections are made certain respectively. The convergence criterion of root-mean-square of plural y which is the quotient of the optical field"s distributions separated by one pass is established. Under the circs of multi-kind of distribution of gain and different measurement of distortion, the output optical field distribution is calculated.

在比较了各种计算腔模方法的基础上，根据角谱传播理论，选择FFT算法，建立谐振腔内多层增益分布模型，分别确定了FFT算法的空间采样间隔、保护带系数和分段计算的距离，选取光场往返一次之比的均方根值收敛准则，计算多种增益分布、不同镜面变形时的谐振腔输出光场分布，同时计算该光场的远场分布和传输有限距离之后的分布。

These appearances including V-style rabbet, advent of bounded weak echo region, stronger wind vertical shear and phenomenon of airflow convergence in radar precipitation echoes were all typical characteristics of strong convective weather echoes.

雷达回波上的"V"形槽口、有界弱回波的出现、较强的垂直风切变以及气流辐合现象，均为强对流天气回波的典型特征。

The local search is embedded into RAGA to accelerate its convergence and enhance its global optimization ability.

在加速遗传算法中，嵌入局部搜索，以加强算法的全局寻优能力。

As one kind of optimization, RAGA are simple and universal and also have the characteristic of good adaptability. The back analysis result shows the fast convergence and high efficiency of RAGA in the back analysis of concrete thermal parameters.

反演结果表明，基于实数编码的加速遗传算法在混凝土热学参数反演分析中简单通用、适应性好、且反演收敛速度快，效率高。

Adaptive adjustable strategy can effectively shorten the learning time and accelerate convergence rale.

而自适应调整学习率可以有效的缩短学习时间，加快收敛速度。

simulated annealing algorithm is a random search algorithm, and it can be applied to many problems with little premise information, gradual convergence in the global optimal solution.

模拟退火算法是一种随机搜索算法，可应用于许多前提信息很少的问题，能渐进地收敛于全局最优解。

Based on fuzzy random theory, this thesis discusses the issue of the convergence for sequence of fuzzy random variables.

本文以模糊随机理论为基础，讨论了模糊随机变量序列的有关收敛性问题。

I. method with input and output data filter is discussed. By means of a so called mearn-square root of random vector presented in the thesis, the convergence of the C.

考虑到许多计算机控制系统在数据采样时带有滤波器，我们还讨论了带输入输出数据滤波器的相关积分方法。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。