查询词典 algorithm theory

The general form of solution for the non symmetric matrix A is given, the expression of optimal approximation solution is presented, and an algorithm for solving the problem is described. The total least squares problem with symmetric and bisymmetry constraints is discussed respectively. A sufficient condition for existence of solution is derived by use of the theory of matrix Ricaati equation. The general form of solution is given if the problem has a solution, and the expression of optimal approximation solution is presented. Some numerical examples are given.

对矩阵A是非对称情形，给出了解的一般表达式，证明了最佳逼近问题解的存在唯一性，并给出了其解的表达式，描述了求解问题的算法；讨论了带对称和双对称约束的总体最小二乘问题，利用Ricaati矩阵方程的理论得到了解存在的一个充分条件，分别对对称矩阵和双对称矩阵两种情形，给出了解的一般表达式，证明了最佳逼近问题解的存在唯一性，给出了其解的表达式，提出了求解这些问题的算法，并给出了数值例子。

During the study of the subject, I have an all-around understanding about the theory and application of Data Mining through reading bookmaking and papers in this field.Based on the research on algorithms, we realized one example following the workflow of Data Mining, which helps us understand the application of the technology.KEYWORDS: data mining , association rule , apriori algorithm

在课题的研究过程中，我通过阅读大量国内外著作、论文，对数据挖掘技术的理论和应用有了一个较为全面的了解，在理论上对关联规则的挖掘算法进行了深入的研究，对于数据挖掘的应用通过实现具体的实例进行研究，并且对挖掘结果进行评价，从而对数据挖掘的应用步骤有了更加深刻的理解。

The basic theory of neural network and an algorithm of BP are described in this paper.

详细介绍了神经网络及BP算法的基本理论，并针对BP算法存在的问题，作者提出了相应的改进措施。

In order to achieve a simple graphics processing, file format conversion and graphics, here will introduce a using c # technology development program, at the same time, the mapping system in c # technology, development environment, algorithm design and development of the system, the functions and characteristics of the system theory, etc.

为了实现一个简单实用的图形处理、文件格式转化以及图形的自由创作，在这里将介绍一款利用C#技术开发的绘图系统程序，同时对C#技术、开发环境、算法设计与比较、系统的开发原理、系统的功能特点等进行了介绍。

Catenary algorithm is regarded as a theory which is much close to the truth in cableway design. But it's very inconvenient for the application of engineering because it belongs to surpass function, especially in the past when the computer is unpopular.

在架空索道的设计中，悬链线理论是人们公认的最接近真实情况的设计理论，但是由于悬链线函数属超越函数，计算上的困难使其在工程应用中极为不便，尤其在计算机不甚普及的过去。

It simulates the circuit breaker with a zero impedance branch, and adopts the linear network characteristic and theory, variable structure and variable parameter analyses to transfer the short-circuit current flow in the bus-bar equality into each side of circuit breaker, and deduces the sequence component model and algorithm for calculating the short-circuit current of circuit breaker when the short-circuit fault occu...

该方法将断路器作为一条阻抗为零的支路来模拟，运用线性网络特性、定理及变结构与变参数的分析方法，将母线上短路时的短路电流等值转移到断路器两侧，导出了相当于在断路器两侧分别发生短路故障时，流过断路器的短路电流的序分量模型和算法。

By means of the approach, the multifractal spectrum of Cantor set is calculated. The result is in accordance with the theory analysis and shows that the presented algorithm is valid.

用所提出的方法对康托集进行了计算，计算结果与理论结果相符，表明了算法的有效性。

The algorithm GS to solve the problem of inverse dynamics based on the optimal theory is proposed, by using the numerical methods of Gill and shooting target, the optimal joint driven torques are obtained With the smooth joint trajectory motion, a fast and stable inverse dynamics method is proposed, it provides a new effective way to control the flexible manipulator The trajectory planning in the joint space and Cartesian coordinates is especially discussed In terms of kinematics of space flexible link manipulators, a sequential integration method for inverse dynamic analysis of flexible manipulators is developed The concrete results of simulations tested and verified the validity of proposed methods, and some valuable conclusions are achieved.

提出了求解基于最优理论的柔性臂逆动力学问题的GS法(Gill—Shooting method)，得到了柔性臂关节的最优驱动力矩；提出了基于光滑关节运动轨迹的柔性臂逆动力学的快速稳定方法，为柔性臂控制提供了一条新的途径；探讨了关节空间和直角坐标空间柔性臂的轨迹规划问题；研究并完善了结合柔性臂运动学的顺序积分的逆动力学方法。通过具体实例的仿真研究，验证了所提出的柔性臂逆动力学方法的有效性，得出了一些很有价值的结论。

In order to overcome the limitation, by using the character of in size order for continuous attributes and error theory of statistics, this paper proposes an algorithm of discretization based on cluster.

文中针对这一缺陷，利用连续数值属性有序性的性质和统计方差理论，提出了一种基于聚类的连续属性离散化算法。

Based on the theory of characteristic polynomial, a new phase stepping algorithm, which is insensitive to disturbance and error, was put forward and improved.

经实验验证，该算法有效地提高了相移干涉仪测量表面形貌的Ra值，重复测量精度达5倍以上，使测量结果更接近实际值。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。