查询词典 feature vector

Applling the key techniques of text topics classification to text sentiment classification In this paper, using three kinds feature selection methods (information gain, mutual information and chi-square statistic), and two kinds probability computer, and support vector machine to construct the classifier, text sentiment classification are studied.

本文采用了信息增益、互信息和x~2统计三种特征选择方法以及布尔和频率两种概率估算方法，对文本情感倾向分类进行了实验研究，选择支持向量机技术构造分类器。

Character recognition is an important branch of pattern recognition,its key factors are selecting and extracting proper feature vector.

字符识别是模式识别的一个重要分支，其关键是特征向量的选择与提取。

The vector plot of 3D magnetic flux and the surface plot for the radial component of magnetic flux density were obtained,which could show the feature of the MLF near defect expressly.

利用数学模型对漏磁信号进行了仿真分析，得到了三维磁通密度矢量图和它的径向分量曲面图，直观地显示了缺陷附近漏磁场的特点。

A new approach-two dimensional principal component analysis(2DPCA) is developed for face recognition. 2DPCA approach dont need to transform the image matrix into feature vector. It directly uses the image matrix to construct the sample covariance matrix.

5研究了二维主成分分析(2DPCA)方法，2DPCA方法不需要先将图像矩阵展开成一维向量，而是直接利用图像矩阵来构建样本协方差矩阵，所以2DPCA比PCA的识别时间更短，识别更高。

According to the previous studies, a method combining the feature analysis methods of sequences with support vector machine technology was proposed for identifying GPCRs and their type by analyzing the characteristics of sequence differences.

在前期工作的基础上，作者将序列特征分析与支持向量机技术结合起来，通过分析序列的特征差异，对G蛋白偶联受体分子及其类型进行识别。

Some important properties of singular value vector of color face image were proved, and then it was extracted as algebraic feature and applied to color face recognition.

首先证明了彩色图像的奇异值向量具有代数和几何不变性；然后将其提取为图像的代数特征并应用到人脸识别中。

Some important properties of singular value vector of color face image were proved,and then it was extracted as algebraic feature and applied to color face recognition.

由于灰度图像易处理、灰度人脸图像库易获取的特点，大多数人脸识别方法都是基于灰度人脸图像的。

Some new idea and techniquesabout statistic tangent distance, compute tangent vector based on Singular Value Decomposition,the choice of transformation parameters, dimension decrease based on SVD, feature extractionbased on Mahalanobis distance are proposed in the dissertation.

在统计切线距离、基于奇异值分解求解切线向量、变化参数的选择、基于奇异值分解的降维、基于马氏距离的特征选择等方面提出了自己的新方法。

SVD can reflect the algebra character of the image effectively, and then through SVD operation on vehicle image matrix which includes singular value dimensionality reduction and singular value vector compositor, the feature subspace for recognition is established.

奇异值分解是基于代数特征的特征提取，经过对车辆图像矩阵的奇异值分解，再经过奇异值降维压缩和奇异值矢量排序，最后建立了用于识别的特征子空间。

In study of SOFM, from basical SOFM structure and algorithm, the relationship between neighborhood function and sequential maps has been first analysed by defining the energy function, then learning converge of the network has been discussed and it has been proved that for the SOFM there is a reliable solution to presenting feature vector distribution.

对自组织特征映射的研究，从基本的网络结构和算法入手，首先通过定义能量函数分析了邻域函数与网络有序映射的关系，进而分析了网络的学习收敛性。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！