查询词典 numerical algorithm

And it comparatives and analyses the efficiency of three algorithm's cliping through an example, the example proved: Liang－Barsky algorithm efficiency is highest, Cohen-Sutherland next best, and the midpoint of division algorithm efficiency is lowest.

并通过一个实例对三种算法的裁剪效率比较分析，实例证明：梁友栋一Barsky算法效率最高，Cohen—Sutherland次之，而中点分割算法裁剪效率最低。

The main constituent of algorithm ability is: reading algorithm ability; refining the algorithmic rule ability; algorithmic language ability; applied algorithm ability.

算法能力的主要组成部分是：阅读算法能力；提炼"算理"能力；算法语言能力；应用算法能力。

For the key of vector- Distance algorithm , Curve fitting is used for the derivation of deviation angle algorithm, demonstrating the feasibility of deviation angle Algorithm and the error analysis.

针对矢量距离算法的关键，采用曲线拟合对计算偏离角的关系式进行了推导，论证了偏离角算法的可行性，对算法进行误差分析，用归纳的方法推导出计算磁短节中点与直井之间距离的关系式。

The algorithm used to implement fast Fourier transform of real-valued with complex-valued Fourier algorithm and the algorithm used to compensate the decaying direct current with arbitrary decay time parameter are deduced in detail.

对其中的一种用复序列DFT算法分析实数序列的算法和一种用来对具有任意衰减时间参数的衰减直流分量进行补偿的算法进行了详细推导。

An efficient parallel algorithm, PMAR, which is based on share nothing architechure in multiple computers, is given to settle the problem of mining association rules in a distributed database or a very large database, An incremental updating algorithm for mining association rules, EUIA, which is based on algorithm LIDBSO, is proposed.

提出了一个基于多台计算机间无共享体系结构的高效并行采掘关联规则的算法PMAR，用于解决在分布式数据库中或在特大数据库中的关联规则采掘问题。

on the research of primary cable routing, an automated primary routing algorithm based on Dijkstra algorithm is put forward, which can generate automatically the primary radiate distribution planning graph of the area to be planned.b In the research of secondary cable routing, a heuristic search algorithm—production system reasoning of artificial intelligence is put forward in this paper to solve the problem of load allocation in outlet cables of main supply sources.

在初级布线的研究中，本文提出基于最短路Dijkstra算法的自动初级布线算法，该算法能对一个待规划的城区分片自动形成初步的城区辐射配电网规划图。

The reason the default produced is analyzed and a new latest available unscheduled channel with smallest void algorithm is presented. The performance of the two algorithms is simulated. The results show that in LAUC-SV algorithm the effective window of the packet loss versus unit delay time of fiber delay lines is expanded significantly and the packet loss ratio is decreased about 100.5. The algorithm complexity of the LAUC-SV is only increased arithmetically with LAUC. Both the algorithms can not support delay reservation protocol effectively.

分析了产生此缺陷的原因并提出了一种LAUC算法的改进算法LAUC-SV算法，采用仿真的方法分析比较了两种算法的性能，结果表明LAUC-SV算法比LAUC算法的丢包率下降100.5，且LAUC-SV算法下的丢包率关于光纤延时线单元延时时间的工作窗口与传统LAUC相比大大展宽，而前者的算法复杂度与后者相比仅呈算术增长，但两算法均不能有效支持延时预约协议。

This paper summarizes the background and advantage of data mining, as well as the significance of data mining in the scientific research management of colleges and universities firstly, and then discusses the theory of data mining, association rules and the ideas of main algorithm, analyzes the classic Apriori algorithm and its existing problems as well as the basic solutions. After that, this paper proposes Multi-Dimensional Apriori algorithm which is designed specially for the mining of this paper; Then describes the structure of scientific research data mining system, defines subject-oriented mining tasks, including: mining the data about research projects, mining the data about papers, mining the data about academic writings. The association mining process is implemented by programing, a number of stimulating association rules are found, interpreted and analyzed.

本文首先综述了数据挖掘的研究背景、意义以及数据挖掘技术在高校科研管理中的应用现状和意义，然后在对数据挖掘相关理论、关联规则思想及主要算法进行讨论，分析经典Apriori算法及其存在的问题、基本解决方案后，提出了适合本文挖掘的多维Apriori算法的设计方案，并应用于本文挖掘中；接着论文介绍了科研数据的关联挖掘系统的结构，确定了面向主题的挖掘任务，包括：科研项目信息的挖掘、论文信息的挖掘、学术专著信息的挖掘等；设计了关联规则的实施过程，并通过程序编码得以实现，获得了多条有启发性的关联规则，并对其进行了解释与分析。

Because of the local astringency of genetic algorithm, an improved recurrence search algorithm is presented based on the essential genetic algorithm.

针对遗传算法存在的局部收敛性，设计了一种循环搜索遗传算法，算法融入了保优策略和自适应调整等方法。

Combine the advantage of immune clone algorithm and imitate anneal algorithm, put forward task of a kind of reseau to attemper optimize model and algorithm.

结合免疫克隆算法和模拟退火算法的优点，提出了一种网格任务调度优化模型和算法。

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。