逼近

Numerical approximations include functional approximations and statistical approximations.

数值逼近包括函数模型逼近和统计模型逼近.

The Mercedes began to gain on the van.

那辆奔驰开始逼近小货车。

In function learning, BMAC approaches faster and is more accurate than CMAC. At the same time, rules of influence of the studying parameters and weights initialization in function learning are obtained.

在函数学习中通过与CMAC网络的对比，体现出了BMAC网络具有逼近速度快，精度高的特性，同时也得出了学习参数及网络权值初始化对学习速度及逼近精度的影响规律。

In this paper, for the function of Chebyshev expansion, the approximating function having the approximant's order of Chebyshev polynomials is given by means of Faber mapping and quadratic Pad é approximation of power series, and it is also expressed by the fraction of Chebyshev polynomials.

对于具有Chebyshev展式的函数，文章利用Faber映射及幂级数二次Padé逼近，给出其具有关于Chebyshev正交多项式的逼近阶的逼近函数，并将其用Chebyshev正交多项式分式表示。

In this paper the problem of strong unicity of best simultaneous approximation is studied.

研究了最佳同时逼近的强唯一性,给出了最佳同时逼近的强唯一性定理.

The matron bore down upon the terrified nurses.

护士长逼近了那些惊慌的护士们。

The forces of the enemy advanced against them.

敌军向他们步步逼近.

A typhoon is now approaching Hong Kong.

台风现正逼近香港.

Only one fuzzy logic system is employed as approximator to compensate all the unknown items, and at the same time, adaptive technology is adopted on line to identify the unknown parameter.

在控制器设计过程中，仅采用一个模糊逻辑系统作为逼近器，使得所有的未知项得到补偿，同时采用自适应技术在线辨识未知参数和逼近误差上界。

They all evacuated when the enemy approached the city.

敌人逼近这个城市时他们已撤退了.

We received warning that the enemy were getting nearer.

我们事先得到敌人正在逼近的警报.

War was impending over the young republic.

战争正在逼近这个年轻的共和国.

Theorem Two testifies the invariant property with independent variable fractional transformation; this property of multivariate matrix Pad é approximant is like that of one variable matrix Pad é approximant.

定理二证明多元矩阵Padé逼近与一元矩阵Padé逼近一样，具有自变量分式变换下的单应不变性；

Based on the characteristics of normal distribution function, this paper takes use of the sinx function to approach instead of the original quadratic function.

本文根据正态分布函数的特性，将原文中用二次函数逼近的方法，改用sinx函数去逼近。

Make improvement on Successive Approximation Quantization ( SAQ), reduce the time of approximation quantization, accelerate the coding speed.

对逐次逼近量化进行了改进，减少了逼近量化的时间，加快编码速度。

The RBF Network with the Green function as the active function is a universal approximator in that it can approximate arbitrarily well any multivariate continuous function. It has the potential of dealing with the nonlinear relationship and can forecast the calorific value of coal quickly and exactly.

以格林函数为激活函数的RBF网络是通用逼近器，它可以逼近任意多元连续函数，具有处理非线性关系的强大潜能，可以快速、准确地预测煤发热量。

Hurricane Betty is now approaching the coast of Florida.

飓风贝蒂正在逼近佛罗里达海岸。

Unemployment is rapidly approaching the one million mark.

失业人数正迅速逼近百万大关。

The police car was gaining ground on the robbers.

警车正在逼近抢劫犯.

She was within sight of Navratilova'srecord of seventy-four consecutive wins.

她已经逼近了纳夫拉蒂洛娃74连胜的纪录。

By the knee joint angle curve got from 3-D Gain Analyzer, we approach the knee joint angle curve to achieve the most approximation between prosthesis and body.

针对Zebris三维步态分析仪采集到的膝关节角度曲线，对膝关节角度进行逼近，以实现假肢对健肢的最大程度地逼近。

The enemy is closing in on the city.

敌军正逼近这座城市.

Considering there are uncertainties in the system's model, fuzzy logic is adopted as an approximator to identify the uncertainties. Using Lyapunov law, we derive the sliding-mode control law and the related parameters adaptive law of fuzzy approximator.

同时考虑到系统模型中存在的不确定项，利用模糊逻辑的逼近功能进行估计，文中采用Lyapunov方法求取了控制器的控制律以及模糊逼近的有关参数的自适应律。

He had crept up on his unsuspecting victim from behind.

他从背后悄悄逼近了那毫无戒备的受害者。

Such a four-layer FNN constitutes a universal approximator of fuzzy valued function. That is, each continuous fuzzy valued function defined on any compact set of Euclidean space can be approximated by the FNN to any degree of accuracy.

该类网络构成了模糊值函数的一类泛逼近器，即在欧氏空间的任何紧集上，任意连续模糊值函数能被这类FNN逼近到任意精度。

The police are moving in on the criminals hiding in the hills.

警察正向躲在山里的罪犯逼近.

At beginning, we introduced fundamental theories of radial basis function neural network, which has local approximation property; this property can be used to compute inverse process of nonlinear blind source separation.

首先分析了径向基函数神经网络的基本原理，它具有局部逼近特性，可用于非线性盲源分离中逆函数的逼近过程中。

Fuzzy System as Universal Approximator and Its Approximation Properties

作为通用逼近子的模糊系统及其逼近性质

In this paper, the exponential sum approximation is studied by utilizing Pad é approximation theory and Laplace transformation theory. A simple solution of exponential sum approximation is obtained and illustrating examples of numerical values are given.

文章利用Padé逼近理论和拉普拉斯变换理论研究了指数和逼近这一非线性逼近的问题，得出了指数和逼近的一种简易求法，并给出了数值例子。

The rebels have advanced to within 150 kms of the capital.

叛军已经逼近到距首都150公里的地方。