查询词典 cluster sampling

The architecture of object-oriented software will involve three levels: a system is a set of clusters; a cluster is a set of classes; a class is a set of features.

面向对象的软件架构包括三个层次：一个系统是一组群集；一个群集是一组类；一个类是一组特性。

And the shortages of two simplifications are pointed out.(2)A new networked PC cluster parallel computing environment is set up, and the detailed method of configuration and use is presented.

为引入有限元的并行计算技术，架构了一个微机机群并行环境，并详细给出了计算环境配置和使用方法。

On the basis of rough set and cluster analysis on related data of various provinces in 2006, 30 cities could be divided into 4 types according to their modernization level.

结合聚类分析和粗集理论生成的决策规则，利用2006年我国各省区的相关数据，最终将30个省区的城市现代化水平划分为4个类别。

The idea is to remove the cluster form the current data set, repeat the process, and stop the algorithm when the stop criterions are satisfied.

将找到的类从当前数据集中排除以后，对剩下的数据重复以上处理，直到满足所提出的循环停止条件为止。

Experiments indicate that these algorithms are able to create compound functions and cluster a mixed data set that contains continuous attributes and discrete attributes.

本文对基于数据库的模型生成和模型组合作了较深入的研究，给出了基于原型库的数据开采搜索算法和基于扩充CF-树数据聚类算法。

In this paper, after briefly recalling the basics of CPMD method and the development of the CPMD code, firstly a cluster of 10 nodes is set up and the efficiency of parallel computing is studied on it for further computational chemistry study.

我们在自行架设的集群环境上用CPMD方法研究了氧分子在氧化镁(100)表面的吸附过程。

Nowadays, Shiling Town has formed a set of industrial cluster system which contains the leather design, production, processing, marketing, transportation and exchange of information. In addition, it has become the largest production base for leather goods and leather goods distribution center for raw materials.

目前，狮岭镇已形成集皮具设计、生产、加工、销售、运输、信息交流相配套的产业集群体系，成为全国最大的皮具生产基地和皮具原铺材料集散地。

The concept of genetic algorithm, its configuration, operators and existing problems are introduced in this paper. A new algorithm for clustering analysis is presented based on genetic algorithm. There are two characteristics in our approaches. Firstly, the algorithm is the general-purposed and our clustering analyzer can cluster large data set with mixed numeric and categorical attributes.

4介绍遗传算法的概念、算法结构、运算算子及主要存在问题；提出了一种基于遗传算法的聚类新方法MGA，该方法有两个主要优点：一是通用性强，可以对包含数值属性和符号属性的大数据集进行聚类；二是提高了数据挖掘的效率与质量。

We recommend the CCSD coupled cluster method with cc-pVDZ basis set as a reliable method of computing BDE for dimethylnitramine.

因此，当设计和合成新的含能材料时，如果需要计算二甲硝胺的(CH3)2N-NO2键的键离解能，我们推荐用CCSD/cc-pVDZ方法。

The simulation results indicated that the data processing method is effective and feasible. Besides, some valuable conclusions were gained. To research autonomous positioning and attitude determination about satellites cluster, we set the DS-3 mission as the background.

最后，结合美国的DS-3计划，我们对网络星座的自主定位问题进行了研究，给出了相对定位、定姿以及整网绝对姿态确定的方案并进行了仿真，还对基线数量的选择和部署方式进行了初步研究。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！