Cluster validity index is used to evaluate the validity of clustering.

It first introduces the concept of data clustering and data classification.

首先介绍聚类和分类的概念,然后讨论了十一种数据聚类方法.

Emphasis is placed on a new model-Ionization Ionization Clustering Cluster model.

重点考虑了径迹结构和能量沉积特点的新的细胞失活模型.

So the bad news is clustering thick and fast.

坏消息来的总是又快又集中.

The clustering method combines the density and the hierarchical clustering methods.

这种算法结合密度聚类和层次聚类两种思想.

Many species cause pattern heterogeneity only by their growth form or their aggregation or shoot clustering.

大多数植物种许多种类在分布格局上不一致的原因,仅是由于它们的生长型或它们的聚生性或由于簇生性的不同.

Activation of lymphocytes and liver regeneration both involve perinuclear clustering of lysosmes.

淋巴细胞的激活以及肝脏的再生都与溶酶体在核周的集聚有关.

Eurasian pink widely cultivated for its flat-topped dense clusters of varicolored flowers.

广泛种植的平顶、密集、多色串状花瓣的欧亚石竹.

Ned's son was observing galactic clusters with a telescope.

内德的儿子当时正在用望远镜观看银河星团.

There exists certain degree of similarities between industrial clusters and species population.

产业集群与生物种群具有一定的相似性.

You know those clusters of stars you see in the night sky?

知道那些你在夜空中看到的那些星团 么 ?

Methods: Used to identify the clusters which should be distinguished are commonly called " clustering procedures ".

用于鉴定一些将要区分的聚群之方法通常称为 聚类 过程.

These species are called colonial because they are simply made up of clusters of independent cells.

由于它们只由独立的细胞群所组成,因此这些种被称为集群种.

Less perfect forms, known as " boat " and " carbonado " are clusters of tiny crystals.

稍次些的则由细小的晶体群组成, 称为“圆粒钻石 ” 和 “ 黑钻石 ”.

For this purpose the study of globular clusters is most instructive.

在这个问题上球状星团的研究最富有指导意义.

Tombstones jutted out of the ground in broken clusters.

墓碑三三两两地竖立在地面上。

When the clutch broke, the car was locked into second gear.

离合器失灵后，汽车只能在二挡行驶。

Laura let out the clutch and pulled slowly away down the drive.

劳拉松开离合器踏板，沿车道慢慢驶离。

Careless use of the clutch may damage the gears.

离合器使用不慎可能会损坏传动装置。

He lost his clutch on the rope and fell.

他抓不住绳子,松手摔了下来.

His neighbours include Australia's richest man and a clutch of actors, bankers and sports stars.

他的邻居包括澳大利亚的富翁、演员 、 银行家和运动明星.