特征向量

Based on the vector module's characteristics of invariance of translation and rotation coordinate transformation,a new fragment matching method is brought forward.

根据向量模在平移、旋转等坐标变换中具有不变性的特征，给出了一种新的碎片匹配算法。

Based on the decomposition theorem for vector space with module structure and rational canonical form of matrix, a kind of new block diagonal controllably canonical forms are inferred when the time invariant linear multivariable system is completely controllable, which the system matrix is similar to a block diagonal and has an analogy with its rational canonical form. Compare with current controllability canonical forms, this kind is easier to analyse the system constructional characteristic. The process of proof gives an effective solution method.

基于向量空间的模结构分解和矩阵的有理标准形给出了定常多输入线性系统一类新的块对角可控规范型，其中的系统矩阵相似与一个块对角矩阵，该块对角矩阵类似于矩阵的有理标准形，与现在有的可控规范型比较，更容易反映系统的结构特征，证明步骤给出了求解方法。

The simulation results show that the model based on potential support vector machine not only has much stronger generalization ability but also has the ability of feature selection which is not owned by other ones based on standard support vector machine.

数据仿真显示该模型同标准支持向量机模型相比不仅具有更好的推广能力，而且具备较好的特征变量自动选取功能。

One of the most difficulties in document automatic classification is the high dimension of feature space and the sparseness of text representation vector.

文本自动分类问题的最大特点和困难之一是特征空间的高维性和文档表示向量的稀疏性。

We present a technique that uses a vector space representation of shape to infer missing vertex coordinates.

详细说明：在三维表面特征识别中，利用向量空间表示法来进行迷失的顶点坐标推断。

This paper study systematically text automatic categorization from three ways including vector model representation, feature selection and classifier training.

讨论了文本表示的整个过程——分词，建立停用词表，特征选择，权重计算，生成向量空间。

This paper study systematically text automatic categorization from these ways including text pretreatment, vector model representation, feature selection and classify methods.

本文从文本预处理，文本的向量模型表示，特征降维方式和分类算法几个部分较系统的研究了文本自动分类。

In order to solve the problem, support vector machine based on weighted feature is proposed in this paper.

为了解决这个问题，本文提出了一种基于特征加权的支持向量回归机。

We obtain the eigenfunction through inverse transform,and select appropriate threshold to extract iso-surface.We append the weighted coefficients on sampling density for non-uniform sampling to further compute rational thresholds.

调用快速傅立叶变换FFTW(The Fastest Fourier Transform in the West)软件包，根据点的位置和法向量计算傅立叶系数，通过逆变换求出特征函数，选择合适的阈值提取表面的等值面，对于非均匀采样通过采样密度的加权系数进一步计算合理的阈值。

Afte studing some limications of the special algorithm, this paper analyzes the effects on correlation statistical property of JPEG image's pixels and DCT due to YASS ,based on which, the paper propose a steganalytic algorithm with Markov features, correlative variance features, co-occurrence features, and using SVM classifier.

本算法利用马尔可夫状态转移矩阵、相关差值和共生矩阵作为特征量，借助支持向量机进行分类。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。