查询词典 weak convergence

Premature convergence and weak local optimization are two key problems existing in the conventional genetic algorithm. To overcome the shortcomings, an improved genetic algorithm based on the particle swarm algorithm is proposed.

针对传统遗传算法中存在的易陷入局部最优解和后期收敛速度慢的问题，基于粒子群算法，对传统遗传算法作了改进，提出了一种基于粒子群算法的遗传算法。

Chapter 3: Using spectral projected gradient method and a new nonmonotone line search technique, we propose a algorithm for solving the trust region subproblem. Under weak conditions, the global convergence is established.

第三章：利用谱投影梯度方法与一个新的非单调线搜索技术给出了求解信赖域子问题的一个方法，在一般的假设条件下获得了方法的全局收敛性。

For complex multi-peaks function with high dimensions, the classical PSOA has some serious disadvantages such as slow convergence and weak ability of local search.

在求解高维空间中复杂多峰函数的优化问题时，传统的粒子群算法在收敛速度和局部搜索能力等方面表现出严重不足。

According to the characteristics of strong global search, but weak local search and slow convergence of genetic algorithm, this paper proposed a new hybrid algorithm which combined GA and PSO, and applied it successfully to automatic software test data generation.

针对遗传算法具有较强的全局搜索能力，但局部搜索能力较弱，且收敛速度慢的特点。将遗传算法与粒子群算法结合起来形成新的混合算法，并成功应用到软件测试数据自动生成过程中。

Genetic arithmetic is a evolutional algorithm with stochastic search technology, it is also has the shortcomings with the prematurity ,slow on the convergence rate ,weak in the ability of local search ,which is appeared on the process of utilizing.

遗传算法是一种具有随机搜索技术的进化算法，但在运用过程中出现早熟、收敛速度慢、局部搜索能力差的缺点。

Compared with the PID parameter optimization method using the genetic algorithm, the proposed method, which inherits the advantages of the genetic algorithm and the simulated annealing algorithm, can overcome some disadvantages such as premature convergence, weak local searching ability and low computing efficiency.

该方法继承了遗传算法和模拟退火算法这两者的优点，与采用常规遗传算法的PID参数整定方法相比较，这种方法在克服解早熟、增强局部寻优能力和提高计算效率等方面都有明显的改进。

The weak moisture convergence at the low level simulated by the Zhang-McFarlane scheme is not strong enough to maintain the structure and the eastward propagation of the oscillation.

Zhang-McFarlane（1995年）对流方案模拟的MJO振幅非常弱，而且缺乏连续的传播特征，在MJO的演变过程中弱的低层水汽辐合使MJO难以维持和传播。

An improved real-code genetic algorithm is designed with different cross, selection and variation operators, aiming at overcoming its inherent shortcomings of premature, dead state convergence and weak mountain climbing during function optimization.

针对实数编码在进行数值优化时固有的过早收敛、停滞现象和弱的爬山能力等缺点，通过设计不同的交叉、变异算子，提出了一种改进的实数编码遗传算法。

But the weak law of large numbers and the complete convergence for arrays of rowwiseρ*-mixing random variables have not been reported.

但是关于它所生成的随机变量组列的弱大数定律及完全收敛性还未见报道，本章讨论这方面的内容，仅在条件ρ~*(1)＜1，而对混合速度不作任何限制下，得到了：定理0.1.1设{X_；1≤k≤n，n≥1}是行内随机变量为ρ~*混合且ρ~*(1)＜1的随机变量组列。

There are some disadvantages in BP algorithm, such as low rate of convergence, easily falling into local minimum point and weak global search capability. In order to settle these problems, a genetic algorithm was used to train BP neural network to replace classical learning algorithms. An evolutionary neural network learning algorithm was founded.

针对BP算法存在收敛速度慢、容易陷入局部极小值及全局搜索能力弱等缺陷，采用遗传算法训练BP神经网络，取代了一些传统的学习算法，设计了基于进化神经网络的学习算法。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失