查询词典 multidimensional space

As a representative method of swarm intelligence, particle swarm optimization is an algorithm for searching the multidimensional complex space efficiently through cooperation and competition among the individuals in a population of particles.

作为群集智能的代表性方法之一，粒子群优化算法通过粒子之间的合作与竞争以实现对多维复杂空间的高效搜索。

Then a multidimensional emotion-semantic space is established using semantic differential method.

实验结果表明，该算法能够在不同维度与粒度层上实现色彩空间与情感语义空间的复杂映射。

Key words parallel database, multidimensional data space, data hypercube placement

并行数据库，多维数据空间，数据超方体放置

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

The writer focuses on the construction of unconventional, multidimensional time and space and their function on the characters. The several important scenes in the text evidence Greeya's ability in describing objects, and also show the narrator's impersonalized judgments on the relationship between the scenes and the story.

作品中的女主人公A是一个貌美而富有的少妇，她在丈夫的陪同下来到一疗养胜地休闲，这时男主人公X闯进了她的生活，X自称是A的老朋友，去年在马里安巴曾与A相约一年后来此相会，并一同私奔。A深感诧异，她不记得曾与X相识，也不记得曾去过马里安巴。

And has divided the shape and appraised and portrayed the tolerance that the figure captures scale of space and whole complexity with the dimension , have solved the scrambling of the multidimensional evaluation index system.

最后通过对北京三家电子信息技术行业、规模在50万元左右的初创期高技术企业的实证研究，验证了初创期高技术企业绩效评价体的可行性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。