查询词典 rough-hewn

Based on rough set theory, research in this paper mainly focuses on mining rules from decision system.Based on the research of the basic concepts of rough set, we deeply analysis and discuss the approximation set algorithm, equivalence class algorithm, core algorithm, attribute reduction algorithm, rules extract algorithm etc.

本文首先对数据挖掘和知识发现作一概述，并论述了粗糙集理论的重要概念及其度量，基于这些概念和度量，具体分析了粗糙集理论的近似集算法、核算法、属性约简算法、规则提取算法，给出了它们的算法分析以及具体实现步骤。

Rough set theory and factor space are all applied worldly. The partition determined by equivalence relation is the same as knowledge in rough set theory, that is, knowledge is regarded as a partition of data.

粗糙集理论和因素空间在各个方面有着广泛的应用，由于粗糙集理论将等价关系对空间的划分与知识等同，即将知识理解为对数据的划分，任何U的子集称为U中的一个概念或范畴。

As opposed to the fairway, the rough is a patch of land that is made up of rough or long grass.

相对于航道粗糙的，是一小片土地，是由粗或长草。

Results from experiment indicate that decision rule optimization algorithm can realize the rough matching of user demand and service attribute, therefore avoiding the low efficiency of traditional exact matching in exactness and maturity, so this model broadens the application field of rough sets.

结果表明，通过决策规则优化能够实现用户需求和网络服务之间的模糊匹配，从而克服了传统精确匹配的查全率低、查准率差的缺点，扩展了粗糙集的应用领域。

On the basis of image segmentation by complexion and gray information,some rough facial feature contours can be outlined by seed-filling the non-complexional regions.Then a modified color Snake model was used to fine-draw the rough contours.

根据肤色和灰度信息，在图像分割的基础上，利用种子填充技术获得面部各非肤色特征的轮廓初值；然后采用一种改进的彩色Snake模型对轮廓初值进行精确定位；接着，根据人脸的先验知识，利用含有方向信息的形态学边缘检测算子通过一次逐点考察完成下颚轮廓线的提取。

3He was a strange,rough fellow,with a freckled face and red,rough bear

他长得又怪又粗糙，一脸的雀斑，一个蓬乱的红胡子

They stretch out, the matte green of their leaves conveying what it would be like to touch them, to run your finger down the blade and feel the rough resistance of these durable plants' skin: the gama grass, rough hair grass and broom beard grass.

瓜地马拉草、翦股颖和小蓝茎草的细长叶片四处伸展，黯淡的表面想也知道摸起来大概是怎样的质感，用指头顺著叶脉滑下，就可感受到这些强韧植物的粗糙叶面。

Secondly, the rough set theory and data preprocessing are introduced and the general application procedure of rough set theory in data mining is analyzed. Then the authors researches on data discretization and attribute reduction are introduced in detail.

然后，论文对粗糙集理论和数据预处理从理论和技术上做了一些介绍，并对数据挖掘中的各环节运用粗糙集理论的方法进行了分析；随后论文重点对作者在数据离散和属性约简两个方面做的研究工作进行了阐述。

It is thought by analyses that the cause of piebald wire is reffection diference of light at rough surface which is due to higher temperature and higher O 2 content in furnace in annealing of half finished product to make steel wire oxidation loss ,to make steel wire face rough after acid pickling.

分析认为形成"花丝"的原因是半成品在退火时由于炉温过高及炉内富氧造成氧化烧损、酸洗后的钢丝表面粗糙，对光的反射与正常表面不一样所致。

The uncertainty measure for rough sets is one of the key problems in rough set theory.

粗糙集的不确定性度量是粗糙集理论中的关键问题之一。

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。