查询词典 algorithm theory

The new algorithm is about 12 times more efficient than the old algorithm in theory.

从理论方面，改进算法的计算速度提高了大约12倍。

In addition, the algorithm is validated in theory and practice. The result shows that the algorithm is right and effective.

并从理论与实践两个方面对该算法进行了验证，验证的结果显示：该算法是正确并行之有效的。

According to the basic theory of genetic algorithm, using MATLAB programming designed to realize the algorithm.

详细说明：根据遗传算法的基本理论，运用MATLAB编程设计实现该算法。

To improve the performance of image-denoising methods, a locally adaptive denoising algorithm was presented. The new algorithm assumed the statistical dependence among wavelet coefficients. First, a bivariate probability distribution model was introduced to model the statistics of wavelet coefficients, and corresponding nonlinear threshold function was derived from the model using the Bayesian estimation theory.

由于图像小波系数存在很大的层间相关性，引入双变量概率分布模型，基于贝叶斯估计理论，得到了相应的非线性阈值函数；基于层内局域方差估计，利用该收缩函数得到一种局域自适应的图像去噪算法。

The primary work of this paper includes: 1 The general process and the fundamental theory of genetic algorithm is introduced systematically, which is also be applied to an example; 2 The penalty function method and the constraint tournament method are introduced in the paper, which are used to process the constraint limit. Via analyzing the basic principle of NSGA-II ,which is elaborated in the paper, the fast non- dominated sorting method, congestion distance and its comparison operator, the elite strategy and the main process of NSGA-II is researched particularly. 3 Via modeling the fire distribution problem, the model is computed by the algorithm of NSGA-II, which is combined with both the penalty function method and the restraint league tournament method The optimization of two goals are also realized in the paper. The results derived from the VC++6.0 indicate that, two algorithms both have the high convergence, simultaneously the Pareto optimal solution also maintain the variety of distribution.

本文所作的主要工作如下：系统地介绍了遗传算法的一般流程和基本理论，并应用于一个函数优化的实例；研究了用于处理约束限制的罚函数法和约束联赛法，论述了NSGA-II的基本原理，并对其提出的快速非支配排序法、拥挤度及其比较算子、精英策略及NSGA-II的主要流程作了详细的研究；建立了火力分配问题的模型，并将NSGA-II算法分别与罚函数法和约束联赛法相结合对该模型进行了计算，实现了对两个目标的最优化；用VC++6.0编程计算后所得的结果表明，两种算法均具有很好的收敛性，同时Pareto最优解也保持了好的多样性分布。

This paper proposes a heuristic algorithm for attribution reduction based on conditional entropy by the comprehension and analysis of data mining algorithm based on rough set theory.

本文在理解和分析基于粗糙集理论的数据挖掘算法基础上针对属性约简提出了一个基于条件熵的启发式算法。

Conjugate direction algorithm is an important algorithm in the theory of optimization.

引言 在二次函数的最优化算法中，共轭方向算法是一种最有效的方法。

Based on convex optimization theory, an optimal resource allocation algorithm is proposed. The complexity of this algorithm is only linear in the number of subcarriers.

基于凸优化理论，提出了一种最优资源分配算法，其复杂度仅与子载波数成线性关系。

An approach based on Bin-Packing algorithm and graph theory is proposed to avoid the hot-spot and distribute heat evenly on chip surface during test scheduling. First several parallel test set are derived from graph models. Then Bin-Packing algorithm constructs an initial test schedule.

在SoC的测试规划时，考虑为避免在测试过程中出现热点以及测试过程中使热量均匀分布，基于建立的问题模型得到一系列的并行测试集合，再通过Bin-Packing算法构造测试规划，并进行全局的优化。

The theory and algorithm of 3D graph display and reconstruction is studied, including the synchronous contour matching algorithm, MC method, projection-based method, Delaunay triangulation, shortest diagonal method and maximum volume method. And the method of extraction of the color edge of 3D color data is proposed.

分别以同步轮廓线前进法、MC法、基于投影法、Delaunay三角法、最短对角线法、最大体积法研究三维图形显示、重建的理论和算法，提出三维彩色数据颜色边界提取方法。

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。