查询词典 primary algorithm

In this article it raises a mathematical model for this problem according to the practical experiences of production, and unifies simulated annealing algorithm with genetic algorithm in view of the model to solve the fast convergence problem and weak partial searching ability problem in genetic algorithm.

根据生产上的实际经验提出了问题的数学模型，针对该模型，将遗传算法和模拟退火算法结合，解决了遗传算法的收敛过快以及局部搜索能力不强的问题。

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。

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。

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。

This paper will analyze the reason that the performance of imbalanced data is weak,and improve this classical Boosting algorithm by restraining from overfitting and controlling the F-Measure of minority class,and propose an improved algorithm named RIFBoost,and then compare this new algorithm with some traditional classified algorithms on WEKA system.

从分析非平衡数据分类性能差的原因入手，通过抑制过度拟合与对少数类的F度量的控制对经典推进算法进行改进，提出了一种改进算法RIFBoost，然后将算法在WEKA系统上与几个传统的分类算法进行了比较。

Some key algorithms were researched here: a "cut-and-sew" algorithm was presented here to resolve the reconstruction problem of adjacent section contour lines which different from shape and polygon vertex count; a random polygon triangulation algorithm based on CDT was studied to resolve the modeling problem of complex geological model with stones and holes inside; a grid-constraining algorithm of judging whether a point is in a polyhedron was studied here to construct the corresponding geological block model which constrained to wire frame model.

研究了构模过程中的若干关键算法：提出"切开-缝合"算法，解决了形状和顶点数目差异较大的相邻剖面轮廓线重构三维形体模型问题；研究了基于约束Delaunay三角剖分的任意多边形三角剖分算法，解决了含夹石或孔洞的复杂地质体构模问题；研究了判断点在多面体内的网格约束算法，以线框模型为约束构建了相应的地质块段体模型。

An algorithm of 3D coordinates calculation method is proposed based on the principle of Line-Point Matching Algorithm. The determination and solution to the abnormalism of this algorithm are discussed in detail.

提出了基于直线一点匹配原理的焊缝三维坐标算法，讨论了这种算法的奇异性判据和解决措施。

It is difficult to control a single inverted pendulum system because of the characteristics of multi-variable, nonlinear and absolutely instability of the system. A controller based on adaptative neuro-fuzzy inference system is designed by using Matlab/Simulink software in the paper. For the sampling data the hybrid algorithm of back propagation algorithm and least squares algorithm is applied in the paper. Thus the parameters of membership function are adjusted and all of the fuzzy rules are generated automatically.

摘 要：针对单级倒立摆系统具有多变量、非线性、绝对不稳定的特点，本文应用Matlab/Simulink 设计了用于倒立摆系统的基于自适应神经模糊推理系统的ANFIS控制器，采用反向传播算法和最小二乘算法的混合算法对倒立摆控制样本数据进行学习，调整各变量的隶属度函数，自动产生模糊规则。

A new hybrid clustering algorithm in phase of high-efficiency and good quality was put forward on the foundation of synthetically analyzing K-means clustering algorithm based on partition and agglomerative clustering algorithm based on hierarchy, and consulting some improved hybrid clustering algorithms.

在综合分析基于划分的K均值聚类算法和基于层次的凝聚聚类算法的基础上，借鉴各种混合聚类方法，提出了一种执行效率更高和聚类质量更好的分阶段混合聚类算法。

A new hybrid clustering algorithm in phase of highefficiency and good quality was put forward on the foundation of synthetically analyzing Kmeans clustering algorithm based on partition and agglomerative clustering algorithm based on hierarchy, and consulting some improved hybrid clustering algorithms.

在综合分析基于划分的K均值聚类算法和基于层次的凝聚聚类算法的基础上，借鉴各种混合聚类方法，提出了一种执行效率更高和聚类质量更好的分阶段混合聚类算法。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。