种特征

Among them, the algorithm of Eigenface, the most widely-used method of linear map based on PCA, has become the mainstream criterion to test the performance of various FV systems.

目前，已经提出了许多特征提取的方法，其中基于主成分分析(PCA Principle Component Analysis)的Eigenface算法及其变形已经成为测试人脸识别系统性能的基准算法，该方法是模式识别判别分析中最常用的一种线性映射方法，是根据样本点在多维模式空间的位置分布，以样本点在空间中变化最大方向，即方差最大的方向，作为判别矢量来实现数据的特征提取与数据压缩的。

The former uses Eigen-associative Learning algorithm to learn various facial expressions according to a face image with neutral expression. The latter is a two-level fusion approach which combines local linear and global nonlinear subspace learning. Amongst, the local linear subspace learning adopts eigen-representation technique for video sample compression in temporal domain; the global nonlinear subspace learning synthesizes optimized facial expressions in spatial domain.

前者采用特征关联学习算法根据一幅中性表情人脸图像合成具有其它表情的人脸图像；后者是一种结合局部线性和全局非线性子空间分析的两层融合方法，其中局部线性子空间学习采用特征表示技术在时间域对视频样本进行压缩、全局非线性子空间学习在空间域内产生优化的人脸表情。

In the meantime music and dance are dynamic state arts with the human body perform for intermediate, which have two kinds of cultural characteristic of language writing and non- language literalness and the non-language writing characteristic be theirs main aspect, which make race music and dance of protection and lineage have more difficulties comparing cultural heritage ancient works and cultural object ruins .

同时，音乐和舞蹈是以人体表演为中介的动态艺术，它具有语言文字与非语言文字的两种文化特征，非语言文字特征是它的主要方面，这就使得民族音乐和舞蹈的保护与传承较文献典籍和文物遗址而言有更大的难度。

In the meantime music and dance are dynamic state arts with the human body perform for intermediate, which have two kinds of cultural characteristic of language writing and non- language literalness and the non-language writing characteristic be theirs main aspect, which make race music and dance of protection and lineage have a larger difficulty comparing cultural heritage ancient works and cultural object ruins .

同时，音乐和舞蹈是以人体表演为中介的动态艺术，它具有语言文字与非语言文字的两种文化特征，非语言文字特征是它的主要方面，这就使得民族音乐和舞蹈的保护与传承较文献典籍和文物遗址而言有更大的难度。

Based on intensive observation and measurement to the characteristics of tissue anatomical structure of some tree species, the relation of anatomical structure of tree species and their resistance to longicorn beetles was studied systematically with stepwise regression analysis.

作者中文名：刘晶岚；温俊宝；马履一；谢琛；吴彤；田海燕；罗彦文摘要：该文通过对9种树种组织解剖结构特征的观测，运用逐步回归方法，分析了树种解剖特征的差异与天牛危害之间的关系。

Combined analysis of sedimentary environment,diagenesis and tectonic evolution has been applied to obtain the origin characteristics of low resistivity contrast pay.

通过建立低阻油层各种岩石物理成因与地质成因之间的关系，结合沉积环境、成岩作用、构造特征和成藏动力因素等综合分析低阻油层的发育特征，提出了5种具有典型意义的低阻油层有利勘探目标区带：（1）小规模、低幅度构造发育区，（2）天然水淹等构造运动活跃、流体非均质严重的区带，（3）岩性细、粘土矿物组合中蒙脱石含量高的区带，（4）弱水动力环境下砂泥岩薄互层发育区，（5）与火山碎屑沉积演化有关的黄铁矿等导电性矿物富集区。

Most of the China South Seas situated around the magnetic equator, belong to the low magnetic latitude area, where rocks are magnetized horizontally and the property of the Δ T is different with the other areas of Chinese Mainland.

我国的南海大部分海域位于磁赤道带附近，属于低磁纬度区域，以水平磁化为主，磁性体产生的Δ T 异常特征与中国大陆广大地区的Δ T 异常特征差别较大，且南北跨度大，达两千余公里，通常的化极技术在该区域很难取得良好的效果，虽然化赤方法在低纬度地区算法稳定，并通常能取得较好的结果，但是目前针对化赤异常的解释技术却相对较少；本文结合南海地区的航磁数据，对几种常用的化极技术进行了对比与分析，并对化赤技术进行了简要的介绍。

In this paper, we proposed a new feature selection method called Conditional Mutual Information Maximin.

提出了一种新的用于文本分类的特征选择算法，它可以帮助选出区分能力强、弱相关的特征。

Based on the dual-beam interference principle and white light interference feature, this dissertation designs the SWLI surface 3D topography measuring system and analyzes the principle and characters different from that of traditional monochromatic light interference. According to different descriptions of the white light interference feature, the optimal interference point extracting algorithms are classified, analyzed and compared in detail. In the light of the design rule of improving measuring precision and speed simultaneously, two new types of algorithms, named Feature Matching algorithm and Intensity Contrast Moving Window algorithm, are designed to acquire good results according to practical conditions.

基于双光束干涉原理及白光干涉特性，本文设计了扫描白光干涉法表面三维形貌测量系统，分析了该方法区别于传统单色光干涉测量的测量原理及特点，根据对白光干涉特征不同的描述方式对最佳干涉点提取算法进行了分类、分析与比较，并在提高测量精度与测量速度设计原则的指导下，根据测量系统的实际条件设计了两种新的算法：特征匹配法和对比度移窗法，在实际测量中达到了比较好的测量效果。

At first step, the processor before the deformable body contact the end face of cone die cavity regarded as an extrusion process. The minification of core boss's cross-section regarded as compressibility of direct extrusion, which acted as definition factor when construct the Direct Extrusion Model element. Another step, the model element of flat punch extrusion on wedge piece process was constructed when propose the process of deformable body overflow die corner. In this way the spherical end face of blank looked as cone end face one, t he approximate treatment is one of originality innovation in this paper. At last, the two elements have been connected and constructed the model element of cone boss part's deformation in the open die forging.

对于锥形凸台成形的第一个特征时段，即坯料和锥形凸台型腔的端面接触之前的变形过程，本文将凸台的截面缩小率转换成挤压成形的压缩率并以此为界定，建立了不同截面缩小率时的锥形模正挤压的模型单元；对于锥形凸台成形的第二特征时段即锥形模的角部充满过程，在详细考察锥形型腔端面对变形过程影响的基础上，将变形体的球形端面近似成锥面建立了平冲头挤压楔形体的模型单元；最后将前述两种模型单元有机连结，构建了开式模锻中整个锥形凸台成形过程的定量描述。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！