查询词典 convergence

Further, according to the positity of the Hessian matrix, which is got from the second order adjoint model, the uniqueness of the assimilation result is manifest. And the relationship between the rate of convergence and the frequency of the observation utilization in the assimilation is investigated.

进一步，借助二阶伴随模式所得到的Hessian矩阵，说明同化解是唯一的，并分析了优化算法的收敛速度与同化过程中观测资料使用频率的关系。

This paper proposes a modified reduced Hessian SQP method and establishs its global convergence without the above-mentioned requirement.

本文提出了一个修正的既约Hessian SQP方法，并且证明其在没有上面提及的假设条件下具有全局收敛性。

C Using homogeneous finite Markov chain, the global convergence for genetic algorithm is analysed.

应用齐次有限马尔可夫链，进行遗传算法的全局收敛性分析。

It is proved by means of homogeneous finite Markov chain analysis that NS-LDSE is convergent to the global optimum for any chosen initial population. Meanwhile, the convergence speed of NS-LDSE is estimated by means of Markov stopping time.

利用随机过程的相关理论，本文讨论了LDSE算法的收敛性，证明了NS-LDSE所生成的种群Markov序列收敛于最优种群，且与初始种群的选取无关；同时给出其种群Markov序列首达时间的一个上界估计。

These peculiar features may have developed as functional convergence to locomotory features of monotremes, or the presence of lumbar ribs in this newly discovered mammal and their absence in its close relatives might be due to evolutionary developmental homoplasy.

该动物的部分骨架很不像兽亚纲哺乳动物：从胸椎往下到脚踝，该哺乳动物都非常像鸭嘴兽，这也许是功能交汇的结果。

Substituting other faster algorithm of NN for the BP algorithm in it, we get a new non-line homotopic synthetic learning algorithm, which increases the speed of convergence and improves the ability of avoiding local minimum.

在此基础上，进一步提出用其它改进的神经网络快速算法代替其中的BP算法，从而形成新的非线性同伦综合学习算法，即保持了快速收敛的特点，又较大地提高其避免陷入局部极小的能力，收到很好的训练效果。

Based on the concept of zero-path tracking in homotopy which is generalized into minimum of energy function path tracking and considering that different homotopy path has greater impacts on convergence speed, a new method is put forward——the non-line homotopic BP algorithm.

本文在将同伦论中的零点路径跟踪概念推广到对多层前馈神经网络能量函数极小点路径跟踪的基础上，注意到不同的同伦路径对收敛速度的影响，提出了一种改进算法——非线性同伦BP算法。

The concept of zero-path tracking in homotopy is generalized into minimum-path tracking and a new method for the training of multi-layer perceptron is thus put forward──the homotopic BP algorithm. An analysis is made on the convergence property of the proposed method.

采用同伦BP算法进行多层前向网络的训练高小榕，杨福生（清华大学电机及应用电子工程系北京100084）摘要本文把同伦论中零点路径跟踪的概念推广到多层前向网络能量函数极小点路径的跟踪，从而提出多层前向网络一种新的训练方法──同伦BP算法（包括教师同伦和输入同伦），并且分析了其收敛性质。

Clean the skin, the skin surface because the natural sebum film has completely disappeared, this state if frequent persistent, rough skin and lead to aging, so wash your face after the use of a humidor and the convergence of the neutral makeup water, care An indispensable part of the skin, particularly in older women, reduced ability to skin secretion, this session is even more important.

清洁皮肤之后，由于皮肤表面自然的皮脂膜已经完全消失，这种状态如果频繁持续存在，会导致皮肤粗糙和老化，因此，洗脸后使用具有保湿和收敛作用的中性化妆水，是护理皮肤必不可少的一个环节，特别是中老年女性，皮肤分泌能力下降，这个环节更加重要。

The purpose of the paper is to investigate the convergence of the mixed finite element method for the initial-boundary value problem for the Hyperbolic type integro-differential equation and Hyperbolic type equation.

本文讨论了双曲型和双曲型积分微分方程的标准混合有限元和H~1-Galerkin混合有限元方法的L~2模和H~1模的误差估计。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。