聚点

In order to overcome this difficulty,a clustering algorithm based on dynamic division of connected graph is proposed.

当前大部分的聚类算法都难以处理任意形状和大小、存在孤立点和噪音以及密度多变的簇，为此，文中提出了一种基于连通图动态分裂的聚类算法。

It is not only a quantity factor but non quantity factor at the same time to be considered, according to the validity of Taylor expansion formula which is nearby the expansion spot, then the author utilizes judging function of adaptive algorithm and dynamic cluster of the parameter to set up the cluster prediction model of the price of financial assets.

考虑了数量化的因素同时也考虑了非数量化的因素，依据泰勒展开公式在展开点附近的有效性，利用参数自适应算法和动态聚类的判断作用建立了金融资产价格的聚类预测模型。

Unified expression for the iterative of centers is described as to deduce the conditional probability expression of the centers and data weight functions for FKHM. Finally, the partition similitude is used to evaluate the result of clustering.

在中心迭代聚类算法的统一框架的基础上，推导出FKHM算法聚类中心的条件概率表达式以及在迭代过程中的数据点加权函数表达式。

Methods An unsupervised local and global features extraction method was adopted for the localization of facial features of frontal view face image. First, a threshold was used to segment the image into foreground and background, and the nose was localized by considering the symmetry of the face. Second, Harris operator was adopted to detect interest points in a rectangular area covering all the facial features, and then local maximum of the interest points were detected. And finally, Kmeans clustering method was used to cluster the points and obtain the facial features localization.

针对红外正面脸部图像，采用一种无监督的局部和全局的特征提取方法，首先通过阈值法区分出前景和背景，并根据面部特征对称性在前景中确定鼻区；然后在面部确定一个包含所有特征的矩形区域，利用Harris算子在该区域检测出角点，并找出这些点的局部最大值点；最后用Kmeans方法对这些点进行聚类。

This clustering algorithm can on-line partition the input data, pointwise update the clusters, and self-organize the fuzzy neural structure.

此聚类算法可以在线地划分输入数据，逐点地更新聚类，自己组织模糊神经网络的结构。

The characteristics of line oriented clustering method were studied based on the point oriented clustering method.

在对点聚类的基础上，研究了线段聚类的特点。

The physical maps of mtDNAs from N.taihuensis Chen,Salvelinus taxa and Salmo salar were analyzed.Genetic distances between mtDNAs were calculated by the formula of Nei and Li(1979).Phylogenetic reconstruction method,UPGMA,was used to analyze the genetic relationships and the molecular dendrogram was established and revealed:the genetic distance between Salvelinus taxa and Salmo salar is 12.23% and that between N.taihuensis Chen and Salvelinus taxa-S.salar is 21.36%.Thisc indicates that Salangidae diverged from Salmoninae earlier.

比较了鲑形目3种鱼的线粒体DNA物理图谱，根据限制性位点差异法计算它们之间的遗传距离，利用UPGMA聚类分析法构建分子聚类图，结果表明：红点鲑属与大西洋鲑先聚在一起，再与太湖新银鱼相聚，前两者间遗传距离为12.33%，亲缘关系较近，太湖新银鱼与这两者间的遗传距离为21.36%，亲缘关系较远，表明银鱼科与鲑科分离较早。

However, if a complete clustering is desired, the unclustered data can be added to the clusters by assigning them to the cluster containing the closest representative point. Second, the run-time complexity is O , where n is the number of points, because the similarity matrix has to be constructed to get the list of nearest neighbors of points.

首先，该算法没有聚类所有的数据对象，一般情况下，大多数据集含有噪音需要事先除去，但是在要求全局聚类时，可以通过将未参与聚类的数据归并到代表点与之最相似的簇中。

ABSTRACT RGB COLOR SPACE AND IT'S APPLICATION This paper primarily discussed the law of transforming all the color points in RGB color space into color points in chromaticity diagram.

本文初步探讨了RGB颜色空间所有颜色点转换为色度图上的颜色点的规律，按色差将所有颜色点聚类于黑蓝绿青红紫黄白8种颜色。

The application status of high performance engplastics such as PA,PC,PTFE,MPPO,PSU and FRP in ammunition part s including sabots,shell,gas check ring,ammunition case,shell body at home and abroad are presented in detail.

详细介绍了国内外高性能工程塑料如聚酰胺、聚碳酸酯、聚四氟乙烯、改性聚苯醚、聚砜、纤维增强塑料等在弹托、弹带、闭气环、药筒、弹体等多种弹药部件上的应用情况，分析了未来应用发展的趋势，提出了发展其应用的几点建议。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。