查询词典 vector analysis

The main purpose of this paper is to propose a unsupervised clustering-based method to pre-extract the support vector for training the SVM in light of the theory that the classification facet of SVM is determined by support vector only. By analyzing the limitation existed in current multi-class classification methods, and taking into account comprehensively the separability of the class set of nodes, a hierarchical classification method of SVM binary tree based on tree classifier with optimized overall performance is designed.

针对SVM的分类面仅由支持向量决定的理论，提出一种基于无监督聚类方法来预抽取支持向量，训练向量机；并分析现有多类分类方法所存在的弊端，基于综合考虑节点的类集合可分性，设计一种基于树分类器整体性能最优的SVM二叉树层次分类方法。

In the method, the information of relevance feedback has been utilized to extract the user's concepts of interest. These concepts of interest are then represented in a vector space model as the user profile for machine calculation. With the application of the vector space model of interest concepts, the web pages of the user's interest could be better retrieved to enhance retrieval efficiency.

本研究提出了一套方法，应用了概念撷取的技术，来帮助使用者建立一种短期的使用者兴趣档，希望藉由相关回馈来撷取出一个向量空间模型，用来代表使用者单次检索的资讯需求，以帮助系统检索出，与使用者需求相关的网页给使用者浏览，以降低使用者的浏览时间，提高检索的效率。

On the numerical simulation platform of aerodynamic heating for aircraft with complicated shape developed by our institute, we realized the visualization of two and three-dimension data fields of structured grid and unstructured grid, drawing the nephograms and contours of scalar field and vector plots streamline of vector fields, and show the temperature distribution of structure fields as well.

VISC是利用现代计算机强大的图形功能把科学计算中产生的数字信息转变为直观的、以图像或图形信息表示的、随时间和空间变化的物理现象或物理量，从而形象地反映数据场量的分布情况，并提供交互处理工具与手段。

In this paper, the flux oriented angle of stator flux oriented vector control is deduced by the voltage vector space angle of the direct torque control, and mathematical model is set up based on the direct and quadrature axis component of the stator current.

将直接转矩控制与定子磁链定向矢量控制相结合，利用DTC中电压矢量的空间位置角，推导出SFOVC中的磁链定向角，然后根据旋转坐标系中的d轴和q轴电流分量，建立定子磁链估计的数学模型。

Thus through supporting the vector quantity machine theory , we can set up and support the vector regress to predict models , to solve various practical problems.

从而通过支持向量机理论，可以建立支持向量回归预测模型，以解决各种实际问题。

It is equivalent to the vector cross-product, and returns a vector quantity only

它和向量叉积等价，并且只返回一个向量值

This text has described basic principle and thought of supporting the vector quantity to come back, introducing supports the vector quantity to return to the algorithm and several kinds of common kernel functions used i.e.

本文论述了支持向量回归的基本原理和思想，介绍了支持向量回归算法以及所用到

The core of Check vector method is: Inserting check vector in the critical area and dimensions, and tool only simulating these area.

本文，对于这两个瓶颈，本文提出利用测试矢量的方式，在设计版图的关键尺寸和关键区域插入测试矢量，并且只模拟这些区域的版图，以减少版图模拟的时间，优化了整个光刻规则的实现。

This provided the basis for the further study of the gene Rv1494-Rv1495. At the same time,the Rv1494-Rv1495 fuse gene was amplified and subcloned into E.coli-Mycobacterium shuttle vector pMV261. The recombinant vector was transformed into M. smegmatis by electroporation.

同时我们还克隆了Rv1494-Rv1495融合基因，并将其重组到穿梭表达载体pMV261中，经电转化导入无毒的耻垢分枝杆菌(mc~2155)中，并在重组耻垢分枝杆菌(Rmc~2155)中成功表达了11KD的Rv1494-Rv1495编码蛋白。

The whole process of text representation were discussed — word segmentation, building stop words list, feature selection, weight computation and generating vector space. Aim at the influence of stop words, a list, which is fit for text categorization, is set up and makes the vector dimension reduce.

针对停用词对分类的影响，建立了适合文本分类的停用词表，使向量维数得到初步降低；对现有特征选择方法进行了介绍和对比，构造了一种适合支持向量机的特征选择函数——基于类内频率的特征选择函数。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。