查询词典 algorithms

The last way is to study the efficient iterativespeeding algorithms to reduce the condition number of the operator equations.

如何快速、准确地分析三维复杂目标的电磁特性，长期以来一直是计算电磁学领域的研究重点。

In this paper we propose an approach to augment the algorithm described before to improve their performance by defining the conditional probability distribution of different composition of continuous and discrete attributes, and implement these new modified algorithms in Weka. To reduce the storage complexity of the AODE algorithm, we used the selective ensemble method to modify it.

在本文中我们提出了通过有效地定义条件概率分布来改善基于朴素贝叶斯分类器的改进算法的性能的方法，并在Weka的框架下实现了我们提出的改进算法，同时考虑到AODE算法较高的空间复杂度，我们利用选择性集成的思想对AODE算法进行了改进，以降低其存储空间复杂度。

Then, two new algorithms based on conditional entropy, namely CEBARKCC algorithm and CEBARKNC algorithm, are developed in the thesis.

在上述规律的基础上，论文提出了两个新的基于Rough Set理论的启发式知识约简算法：CEBARKCC算法和CEBARKNC算法。

By means of integralequation methods creatively along with other modern mathematical theories,this paperfocuses on finding solvability conditions and conditional well-posedness(especiallyconditional stability),constructing stabilized algorithms,and carrying throughnumerical simulation.

本文创造性地应用积分方程方法，借助现代数学手段，着重研究这些问题的可解性条件、条件适定性，构造稳定化算法，并进行数值模拟。

Experimental results show the recognition rate of the method is 95%for a known expresser and 72% for a novel expresser. Aiming at the shortcomings of optical flow technique,two improved optical flow algorithms are presented.One way is to introduce forward and backword constraint eqution and Hessian matrix of optical flow equation is computed.The well- posedness of each point of local neighbourhood is examined and the weight of Lucas-Kanade's method is defined as the reciprocal of the conditioning number of its Hessian Matrix.

3针对传统光流法的缺点，分别提出了两种不同的改进方法：其一为引入前向-后向光流方程，计算其Hessian矩阵，把Hessian矩阵条件数的倒数作为Lucas-Kanade光流法的加权阵，可有效消除局部邻域中不可靠约束点，同时提高基本约束方程解的稳定性；其二为针对传统光流法只适用于刚体运动的特点，在扩展约束光流方程的基础上引入了div-curl样条函数作为扩展光流约束方程的附加约束条件，给出了一阶和二阶div-curl样条约束下光流的数值解。

The results of simulation experiments show that their algorithms can increase the confidence degree of confidence interval, and improve the performance of simulation output analysis technique.

实验检验表明，本文提出的方法提高了置信区间的置信度，大大改进了稳态仿真输出分析方法的性能。

Simulation results show that the proposed method improves the calibration precision of about 3 times than congener calibration algorithms.

仿真实验结果表明，与两点比例校准相比该校准方法在校准精度上大约提高了3倍，明显优于同类算法。

Two common methods of GPS signal coarse acquisition are analyzed and compared in this paper, and an optimized method is adopted. Two common algorithms of calculating fine frequency are analyzed and compared and the conics fitting is designed to calculate the fine frequency. Based on the distributing character of Doppler frequency shift, swing frequency style of Doppler frequency shift search is employed.

对比分析了两种常用的GPS信号粗捕获实现方法，设计了一种优化的实现方法；同时对常用的两种精细载波频率算法进行了比较分析，设计了一种二次曲线拟合的方法计算精细载波频率；基于多普勒频移的分布特点，改变以往顺序搜索的方式，采用跳频搜索的方法。

The ABS algorithms are utilized in modifying the Zangwill conjugate direction method for nqnconstrained optimization problems.

将ABS方法与Zangwill方法相结合。构造出一种有限步收敛的求解具有线性约束的二次规划问题的共轭方向法－LAZ法

Many existing algorithms of attribute reduction begin at constructing decision table's discernibility matrix,then convert non-empty objects' conjunctive normal form into minimal disjunctive normal form.

现有的很多属性约简算法都是由构造决策表的差别矩阵出发，将矩阵中非空元素的合取范式转化为极小析取范式。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。