查询词典 approximation function

BP neural networks ; model approximation degree ; acceptance probability ; variable stepsize learning algorithm

数值结果表明该算法不仅明显地提高了BP网络的学习收敛速度，而且在一定程度上还能避免陷入局部极小。

The convergence of the iterative approximation of the solutions of uniformly accretive operator equation by the modified Ishikawa and Mann iteration processes with error are.

研究实 Banach空间中一致Φ-强增生算子方程解的修改了的具误差的 Ishikawa迭代序列的收敛性问题。

In order to expand half space Green's functions with addition theorem, a high order approximation method is proposed for evaluation of reflection term of half-space Green's functions with far interactions.

采用高阶拟合方法将远区相互作用单元的半空间空域格林函数用级数表示，对高阶拟合项作加法定理展开，进而应用多层快速多极子算法。

Some theoretical problems related to quantum adiabatic approximation is discussed in this part.

这一部分主要讨论与量子绝热近似有关的一些理论问题。

Quantum adiabatic approximation is widely used in quantum physics.

量子绝热近似在量子物理学中有着广泛的应用。

Adaptive subdivision is performed only in the areas facing to the viewpoint in the pre-process. And in the each adaptive subdivision, we choose the normal angle of the adjacent faces as the control error to detect whether the approximation is sufficient. Sharp edges are automatically tagged according to the given thresholdθand subdivision masks are designed based on different sharp degrees.

在预处理过程中，只选取面向视点的网格作为能够被进一步自适应细分的网格；在自适应细分过程中，用相邻面片的法向夹角作为控制误差来反映细分的逼近程度是否足够；并根据预设的阈值θ自动标记网格中的尖锐特征边，重新设计尖锐特征处的权值掩模。

At the same time, the conditions of affine transform approximation are given in this chapter.

第三章在仿射模型的基础上，首先从函数空间的角度建立起不变特征提取的模型，将不变特征提取归结为寻找具有特殊性质的核函数。

In mis thesis, the problem of adaptive control for affine nonlinear system is studied based on the global approximation of neural network.

本文利用神经网络的全局近似能力，研究了仿射非线性系统的自适应控制问题。

The algorithm of segment rational quadratic B-spline approximation to algebraic curve was discussed in detail.

详细地讨论了代数曲线的分段有理二次B样条逼近算法。

The paper applies algebraic geometry, computational geometry, approximation theory to study the following problems: the Nother type theory and the Riemann-Roch type theory of the piecewise algebraic curve; the number of real intersection points of piecewise algebraic curves; the real piecewise algebraic variety and the B-net resultant of polynomials.

本文应用代数几何，计算几何，函数逼近论等学科的基本理论，分别就分片代数曲线的Nother型与Riemann-Roch型定理；分片代数曲线的实交点数；实分片代数簇以及多项式的B-网结式进行研究。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。