查询词典 acceleration of convergence

This paper,uses the property of being uniformly integrable to truncate the random variable sequences,and under the condition of φx↑,φx2↓,obtain a weak law of large number of martingale difference sequences by the weak convergence theorem.

通过使用一致收敛性对随机变量序列进行截尾，并借助随机变量序列的弱收敛定理，在φ↑，φx2↓的条件下给出了一个鞅差序列的弱大数定律。

For improving the estimation accuracy and the convergence speed of the unscented Kalman filter, a novel adaptive filter method is proposed.

摘要为了提高 UKF 的估计精度和收敛性，提出了一种新的自适应滤波方法。

SVM is a new and outstanding learning machine and is an efficient machine-learning tool in dealing with small samples.SVM overcomes some shortcomings of neural network,such as slow convergence,unstable solution,and bad generalization ability.

支持向量机是由Vapnik等人于上世纪90年代提出的一种崭新的学习机器，它作为统计学习理论的实现方法，是处理小样本学习的有效工具。

In chapter 2, the paper shows the basic conception of subdivision scheme. For unvaried schemes are widely used, the method of analyzing the convergence and smoothness of unvaried schemes is shown.

第二章给出了细分格式的基本概念，由于单变量细分格式的情形应用较为广泛，然后给出了分析变量细分格式收敛性和光滑性的方法。

The allocation of lower level convergence and upper level divergence was favorable to the maintenance of strong updrafts , and the moisture and energy carried by the updrafts was in turn favorable to the genesis and development of convective cloud cluster .

(2)低层辐合，高层辐散的高低空配置有利于强上升运动的维持，强上升气流所携带的水汽和能量有利于对流云团的发生发展，有利于暴雨的维持。

Sony had long espoused vague ideas about exploiting the convergence between previously separate digital devices and forms of media. After the shock, investors asked tougher questions about how this would work.

索尼一直提倡要把电子设备与各种媒体类型结合起来，在"震撼"之后，投资者们对于这个理念如何实行提出了越来越尖锐的问题。

We firstly establish the variational formulation, prove the well-posedness, and then use the infinite element method to solve the problem, we provide some numerical examples as well as the convergence.

我们先建立变分公式，证明其适定性，再用无限元方法求解该变分问题，我们证明了收敛性，并提供了数值例子。

The long-term seepage control effects of the surrounding rocks of the underground powerhouse are performed by a stationary seepage analysis method combining the variational inequality formulation of Signorini's type with an adaptive penalty Heaviside function to guarantee the numerical stability and convergence. Meanwhile, the difficulty in finite element mesh generation is reduced and the calculation time and modeling accuracy are balanced with a global model of equivalent modeling and a submodel of accurate modeling for drainage hole array.

为确保数值计算的稳定性和收敛性，采用Signorini型变分不等式和自适应罚函数相结合的稳定渗流分析方法，对厂房围岩的长期渗控效应进行计算分析；同时，采用基于等效模拟的整体模型分析和基于精细模拟的子模型分析相结合的方法，以减小有限元建模难度并协调计算量和计算精度之间的矛盾。

A convergence estimate and approximation for a kind of parabolic variational inequality is discussed.

摘要本文讨论了一类抛物型变分不等式的近似收敛问题。

The thesis also gives the estimated upper bounds of error decision probability. When the compressor is confined to be a lattice vector quantizer, a explicit mathematic equation for the rate of the performance convergence to the optimum is derived. On the other hand, Distortion Ratio Aproachs to the design of testing system on the basis of vector quantization are put forward, and methods for building the variable length decision tree as well as the fixed length one presented.

在算法方面，提出了失真比矢量量化检验器的设计方法以及可变长和固定码长分类判决树的生成算法；为了解决以矢量量化器为核心的处理系统运算量大，不易实时实现的问题，论文中引入了熵减的概念，在此基础上提出一种快速最近邻搜索编码方法，理论分析及实验结果均证实了这种算法的有效性。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。