向量和

Determinant Research Method is one of the effective methods for calculating the generalized eigenvalues and corresponding eigenvectors of a large sparse matrix. Its theoretical foundation is that for a symmetric matrix the leading principal minors of the eigenmatrix form a Sturm Sequence.

"行列式查找法"是计算大型稀疏矩阵广义特征值和特征向量的有效方法之一，其理论基础是对称矩阵的各阶顺序主子阵的特征行列式形成Sturm序列。

Moreover,the update of User Profile in Vector Space Model and Probability Model is discussed,respectively.

针对向量空间模型和概率模型，分别讨论了User Profile的更新问题。

This algorithm updates probability vector by variety of population diversity and evolutionary state of every gene.

该算法通过种群多样性的变化和每个基因座自身的进化状态来控制概率向量的更新。

In this paper, a Markovian model for dry-battery market forecast is developed as an application of the Markov chain theory, includiing initial probability vector, transition matrix, proportion of market sharing, market stability, etc, In order to illustrate this model, the paper cites as an example the dry-battery market forecast and stability in a certain district.

干电池市场预测的马尔柯夫模型是马尔柯夫链理论的进一步应用。比如：初始概率向量、转移概率矩阵、市场占有率和稳定性等。为了介绍这种方法，我们以一个现实生活中的例子——某地区干电池市场预测及长期稳定状态来说明。

The method is based on vector space model and process neural network.

针对信息挖掘中的网页自动分类问题，提出了一种基于向量空间模型和过程神经元网络的分类方法。

In order to solve the problems of the vector quantization error and the excessive computation complexity arising from audio features, this paper proposed a new automatic audio classification method based on PCA and CHMM.

针对DHMM分类器对音频特征进行向量量化引起的误差及特征维数过多导致计算复杂度过大的问题，提出了一种新的基于PCA和CHMM的音频自动分类方法。

In chapter 3,we dig out two families of invariant quartic curves of a quadratic system.

第五章讨论向量场具有对称中心的二次系统，利用系统的不变双曲线及不变四次曲线，我们确定了一个对应极限环（1.1）分布的二维参数区域，其边界的构成为如下几种常见的极限环分枝：霍夫分析，庞加莱分枝，同宿分枝和异宿分枝。

Chemometrics analysis such as principal component analysis , radial basis function neural network, support vector machine are explored to find the suitable modeling techniques.

利用数据库中的近红外光谱数据，将主成分分析、神经网络和支持向量机等化学计量学方法，应用于近红外光谱分析。

Inscribed polygons are used to approximate a circle, and the number of line segments compose the polygon is detemined by the radius and its image of a circle. Calculation of rotation angles between circle and world coordinate systems with normal vector of circles is also discussed. The proposed approach is tested with several real image data, and results are very satisfying.

讨论了利用空间圆所在平面的法向向量计算空间圆局部坐标系相对于物方坐标系的两个旋转角的方法，系统论述了基于物方直接解和直线段最小二乘模板匹配方法进行空间圆匹配与重建的数学模型，并利用实际图像数据进行了重建实验，取得了较好的重建结果。

, where the first plaintext message P1 is composed of R, random data 896 bits long, and K2, a 128-bit random vector.

（上的P1 ， ka1 ），在那里第一次明文讯息P1是组成的R ，随机数据896位长，和K2 ，为128位随机向量。

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。