Feature dimension reduction can be divided into two categories: feature extraction and feature selection.
特征降维可以分为两类：特征抽取和特征提取。
Conclusion the proposed algorithm has greatly reduced the feature dimension and improved the correct identification rate.
结论该算法有效地降低了特征维数，较大地提高了电台的正确识别率。
New requirements are presented to interconnection integration technology because of the decreasing feature dimension in VLSI devices.
随着VL SI器件特征尺寸的缩小，对互连集成技术提出了新的要求。
Based on a detailed study of these processes, this thesis focuses on characteristics of feature dimension reduction and feature weighting.
本文在对这些过程进行详细了解和研究的基础之上，重点探讨了特征降维和特征加权过程。
Multiple discriminating features with similar contribution to classification are combined into one pattern, which is used as the basic feature dimension.
通过将对分类有相同贡献的文本特征词聚合，使用它们共同的分类贡献向量特征模式作为文本特征向量的基本维；
Actually the kernel design in the recognition method based on discrete time - frequency representation is a problem of feature selection from the ambiguity functions to reduce feature dimension.
基于离散时频分布的信号识别方法，将时频核设计问题转化为以信号自模糊函数为原始特征的特征选择问题，以实现特征降维和信号识别。
First of all, pretreatment of human ear pictures was completed. Then an improved 2dpca algorithm was used to compress feature dimension. Finally, BP neural network was used in ear classification.
该方法首先对人耳图片进行预处理，然后采用改进的两级2dpca算法，进一步压缩提取的人耳特征维数，最后采用BP神经网络进行分类识别。
The ads in this post feature impossible compositions that cause the viewer to question the laws of the universe while bringing an extra dimension of wonder to our world.
本帖中的广告以不可能合成为特色，能导致浏览者对宇宙定律产生疑问，同时为我们的世界带来一份额外维度的奇迹。
So, the globalization responsibility of DB2 Cube Views is to provide the names of business dimension and measure with globalization feature for the OLAP report.
因此，DB 2CubeViews的全球化功能就是为OLAP报表的全球化特性提供业务维度和度量的名称。
There should be no more dimensions than are absolutely necessary, and no feature should be located by more than one dimension in any direction.
除绝对需要的尺寸外，不应该有更多的尺寸；而在任意方向上，只能在一个尺寸上标注特性要求。
The image fractal dimension feature describes the complexity and the roughness of texture.
图像的分数维特征描述了纹理的复杂度和粗糙度。
Use to add a single horizontal ordinate dimension. Attach one endpoint to ordinate origin and one to the feature.
用于添加一个水平坐标尺寸。将一个端点连接到坐标原点，一个端点连接到部件。
Does an international dimension feature in your Annual School Plan?
贵校的年度计划是否反映了国际化特点？
A dimension specified for a given feature on one level of drawing, (for example, a detail drawing) is not mandatory for that feature at any other level (for example, an assembly drawing).
一个图纸层面上的给定部品的尺寸(比如，细部图)并不能强制地标注在另外一个层面的图纸上(比如说，装配图)。
From researching on the universal principle of feature fusion of image, a new algorithm was proposed which based on the 2 dimension principal component analyses (for short 2dpca).
通过对图像特征融合的一般规律的研究，提出了一种基于二维主成分分析(简称2dpca)的图像特征融合算法。
Feature selection is a valid method to reduce the dimension of text vector in automatic text categorization system.
在自动文本分类系统中，特征选择是有效降低文本向量维数的一种方法。
Spiral baffle heat exchanger baffle type and feature are introduced, and the calculation formula of all geometry dimension of spiral baffle are given.
介绍了螺旋折流板换热器折流板的结构形式和特点，给出了螺旋折流板各部分几何尺寸的计算公式。
Finally, narrated the realization of sketch dimension in the parametric feature model system EB3D.
最后讲述了草图尺寸标注在参数化特征造型系统EB3D中的实现。
Feature selection and input dimension reduction are of Paramount im-portance to transient stability assessment based on neural networks.
输入特征选择和输入空间降维是基于神经网络暂态稳定评估的首要问题。
Taking the Brownian dimension as their texture feature, image blocks were clustered and sorted, to control the number of domain blocks to be compared with each range block in coding.
以图像的布朗维数为纹理特征对编码中的图像块进行聚类和排序，实现了对每个值域块所需比较定义域块数目的精确控制。
Objective: To probe the fractional dimension feature of lung cancers texture.
目的：探索肺癌图像的纹理分形维数特征。
Based on resolution reduction, neural network is then utilized for feature compression, which can effectively reduce the dimension of features.
在降低图像解析度的基础上使用神经网络来进行特征压缩，可以有效地降低特征维数。
Reducing the high dimension of feature vectors is an essential part of text categorization.
对高维的特征集进行降维是文本分类过程中的一个重要环节。
In the variant design process, the author adopts Top-Down method and drives the dimension, the feature of the parts and assembly according the request of the variant product to design the new product.
在变型设计过程中，作者采用自顶向下的设计方法来完成设计过程，并根据不同零件的特性分别采用相应变型设计方法如尺寸驱动法、特征控制法和访问零件库法来实现变型设计。
Realizes high, dimension data feature extraction algorithm by using debasing dimension of data.
实现了基于数据降维的高维数据特征提取算法。
In a speaker identification system, training speaker models is computationally expensive, especially when the dimension of feature vectors is large.
在说话人识别系统中，通常训练说话人模型需要很长的时间，特别当说话人特征的维数很高时。
This paper researches the parameters (kernel, penalty parameter c) of SVM and the dimension of feature, which influence aerial image segmentation and classification.
研究了支持向量机参数(核函数、惩罚因子c)和影像特征维数对航空影像分割与分类的影响。
The possibility and specific approach describing seismic precursory pattern with field feature using information dimension D_1 is discussed, and both observational and experimental data are processed.
本文讨论了信息维d_1用于描述具有场特征的地震前兆图象的可能性以及具体方法。
The possibility and specific approach describing seismic precursory pattern with field feature using information dimension D_1 is discussed, and both observational and experimental data are processed.
本文讨论了信息维d_1用于描述具有场特征的地震前兆图象的可能性以及具体方法。
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