Reference to mpeg - 7 standards , mainly researches feature extracting schemes of video visual information . it includes histogram refinement in rgb color space , histogram in hsv color space , color coherence vectors algorithm and homogeneous texture descriptor extraction algorithm 论文中主要研究的视觉特征提取方法有： rgb颜色空间的改进直方图法、 hsv颜色空间的直方图统计、颜色相关向量法和提取同类纹理描述符算法。
4 . for the improved algorithm experimental results , the average recall is 96 . 35 % , and the average precision is 90 . 87 % . the experimental results indicate that the improved algorithm is suit for chinese text automatic classification 基于改进后的中心向量法重构自动分类器，测试取得了开放测试平均查全率90 . 35 、平均准确率90 . 87和封闭测试平均查全率98 . 36 、平均准确率98 . 74的分类效果，说明改进后的算法适合中文文本分类。
Another 20 kinds of non - designed contact points are given for the first time . contact determining algorithm of all the above contact types is given using z - buffer algorithm for 3 - d observation , and simulation results show high accordance with results of vector - associated method . simulation for non - designed contact mode with random initial conditions has been done too , and statistics from the simulation indicates that it is important to predict non - designed contact points in practical rvd efforts 全文的工作包括以下几个方面的内容: 1 .建立了周边式对接机构的复杂几何外形的数学描述,描述了对接初始条件范围内,两对接机构相互接近、捕获过程中可能出现的20种设计接触模式,并针对初始接触点首次提出20种非设计接触模式;利用计算机图形学中可见面判别的z -缓冲算法原理,给出了所有接触模式的检测算法,该算法的仿真结果与辅助向量法高度一致,验证了算法的有效性;进行了300组确定首次接触点的随机仿真,统计结果表明,在飞船上实时进行非设计接触模式的预测是非常重要的。
( 2 ) the influence to classification result is highly effected by using different classifier , for example , the center - vector algorithm obtains better classification results than other two algorithms . with the character feature , the average recall is 80 . 73 % , and the average precision is 82 . 94 % , and with the chinese - word feature , the average recall is 83 . 6 % , and the average precision is 85 . 97 % . different corpuses influence the classification result . for example , the average recall is 89 . 31 % and the average precision is 88 . 33 % , by using the news web pages as corpus from the web site " www . sina . com . cn " , which adopt the center - vector algorithm to structure classifier and select chinese - word as feature 对三种分类器分别以字、词为特征进行分类测试、分析发现：使用相同的分类算法，用词作为特征项，比以字作为特征的分类效果好；用不同的算法构造分类器对分类效果的影响很大，如中心向量算法在字、词特征下的分类效果优于其他两算法；在以字为特征的情况下，该算法的平均查全率80 . 73 ，平均查准率82 . 94 ；在以词为特征的情况下，该算法的平均查全率83 . 6 ，平均查准率85 . 97 ；选用语料不同对分类效果也有影响，如用新浪网( www . sina . com . cn )网页语料进行测试，使用中心向量法分类器和词作为特征的情况下，平均准确率为89 . 31 ，平均查全率为88 . 33 。
Abstract : an integrated approach is proposed to investigate the fuzzy multi - attribute decision - making ( madm ) problems , where subjective preferences are expressed by a pairwise comparison matrix on the relative weights of attributes and objective information is expressed by a decision matrix . an eigenvector method integrated the subjective fuzzy preference matrix and objective information is proposed . two linear programming models based on subjective and objective information are introduced to assess the relative importance weights of attributes in an madm problem . the simple additive weighting method is utilized to aggregate the decision information , and then all the alternatives are ranked . finally , a numerical example is given to show the feasibility and effectiveness of the method . the result shows that it is easier than other methods of integrating subjective and objective information 文摘:研究了结合主观和客观信息的模糊多属性决策问题,其中主客观信息分别由属性权重的两两比较矩阵和决策矩阵组成.提出一种结合主观和客观信息的特征向量决策方法,给出了2种求解基于主客观特征向量法的模糊多属性决策方法.这种方法通过求解2个线性目标规划模型得到最优属性权重,然后,通过对决策信息进行简单的加权集结,得到所有方案的排序结果.最后,通过一个算例说明了该方法的实用性和有效性.结果表明,该方法要比其他主客观结合多属性决策方法简单
Based on the analysis of the working principle to principal and subordinate piston mortar pump , this thesis perfectly discusses the movements of the pump transport mechanism with the rule of vector and the principle of mechanism substitute , and make sure the movement rule of the compensatory cam mechanism , the essential dimensions of the compensatory transport mechanism was ascertained with the expressions of the pressure angle and curvature radius 本文基于对主从活塞式砂浆泵工作原理的分析，运用向量法和机构替代的原理对泵送机构进行了完整的运动分析，确定了泵送机构中的关键部件补偿凸轮机构的运动规律。通过建立补偿凸轮机构的压力角和曲率半径的计算公式，确定了凸轮机构的基本尺寸。
( 2 ) the three numeric methods , including formula method , histogram method and feature vector method , of calcucation invariant probability distribution for chaotic map is derived , and their characteristics are discussed each other , these results of the computer simulation are in agreement with those of theoretic analysis . ( 3 ) the principles and methods of chaotic communication are reviewed and commented systematically . first , several main chaotic synchronization methods are discussed , then the methods and ways of chaotic communication are explored , including analogue chaotic communication , digital chaotic communication and direct chaotic communication . this is the article basis , and it startes from follow - up case study 所做的工作总结如下： ( 1 )综述了混沌现象及其理论的相关问题并对码分多址通信系统的扩频地址编码与混沌序列、混沌同步与系统保密性等问题作了讨论； ( 2 )研究了计算混沌映射不变分布的三种数值方法，即：公式法、直方图法以及特征向量法，并比较了各自的优缺点，计算机模拟结果与理论分析结果相符。
An integrated approach is proposed to investigate the fuzzy multi - attribute decision - making ( madm ) problems , where subjective preferences are expressed by a pairwise comparison matrix on the relative weights of attributes and objective information is expressed by a decision matrix . an eigenvector method integrated the subjective fuzzy preference matrix and objective information is proposed . two linear programming models based on subjective and objective information are introduced to assess the relative importance weights of attributes in an madm problem . the simple additive weighting method is utilized to aggregate the decision information , and then all the alternatives are ranked . finally , a numerical example is given to show the feasibility and effectiveness of the method . the result shows that it is easier than other methods of integrating subjective and objective information 研究了结合主观和客观信息的模糊多属性决策问题,其中主客观信息分别由属性权重的两两比较矩阵和决策矩阵组成.提出一种结合主观和客观信息的特征向量决策方法,给出了2种求解基于主客观特征向量法的模糊多属性决策方法.这种方法通过求解2个线性目标规划模型得到最优属性权重,然后,通过对决策信息进行简单的加权集结,得到所有方案的排序结果.最后,通过一个算例说明了该方法的实用性和有效性.结果表明,该方法要比其他主客观结合多属性决策方法简单
