查询词典 data mining

After a brief summary on data mining and rough set theory, the research works in the thesis can be descript as follows: 1. To the problem that finding rules in enormous data is very timeconsumable and the expansibility of existed algorithms is not very good, the thesis proposes a new method to discompose large data table based on the concepts of positive region and the importance of attribute in rough set theory.

Rough集理论是一种新型的处理不确定性知识的数学工具，围绕着数据挖掘领域存在的问题，本文利用Rough集理论与Rough分析工具，提出若干解决方案，同时在具体处理问题过程中引入了信息理论、因子分析等方法，与Rough分析结合使用，讨论了Rough集技术在知识发现、关联规则挖掘、模式分类以及数据清洗等问题中的应用。

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。

Aiming to the two points of data compressing and characteristic distilling during the pretreatment of image data process, this paper introduces a non-numeric parallel algorithm of continous hopfield neural network used to clustering of image data mining.

针对图像数据预处理中的数据压缩和特征提取两个重点，介绍一种基于连续Hopfield神经网络的非数值并行算法应用于图像数据挖掘的聚类预处理过程。

This project have done an in-depth data mining to the data of circuit breaker on-line working conditon monitoring system, and implement some effective circuit breaker on-line working conditon monitoring data analysis diagnose methods, promote the development of the analysis and research of other devicess on-line working conditon monitoring in the substation too.

本课题对断路器在线监测系统的数据进行了深入的数据挖掘，研究并实现了一些比较有效的断路器在线监测数据分析诊断方法，更对变电所其他设备的在线监测数据开展分析研究作出了有益的探索。

In the preprocessing of data mining,data missing is one of the most common problems in data preprocessing.

在数据挖掘预处理中，数据缺失是最为常见的数据预处理问题之一。

In addition, the information which demonstrate the rule with high repetitiveness by data mining, though such information can help designer understand trend of the data, however, it is difficult to get the chance that hidden in the data.

另外，经资料探勘挖掘出的资讯是资料里呈现出重复性高的规则的资讯，虽然这样的资讯可以帮助决策者了解资料里的趋势，但是，却不容易去挖掘出隐藏在资料里的机会。

For multi-dimensional data visualization technique for data mining, multi-dimensional data is switched into two-dimensional graphics display through parallel coordinate, partitioning section of rotundity, multi-dimensional zoom.

用于数据挖掘的多维数据可视化技术，将多维数据通过平行坐标、圆形分段或多维缩放变换以二维图形显示。

Uniform random sampling is widely applied to many kinds of algorithms in data mining. It processes uniform distribution data set extremely effectively, but easily loses slight cluster and consequently decreases clustering accuracy, when the processing data set is skew distribution.

随机抽样技术已经广泛应用于数据挖掘的各类算法中，它在处理分布均匀的数据集时非常有效，但在处理分布比较倾斜的数据集时容易丢失小的聚类。

The main work in this paper as follows: the concept and system of the network user's behavior has been studied, and the user has been classified by those in this basic; the frame, step, module function of establishing network user's behavior analyzing system has been discussed and some common methods in network customer's behavior analyzing process have also been discussed; the information source of the network customer's behavior analysis system has been studied in this paper, and also combined the relevant processes which came out by web data mining methods; the data-processing software was developed by VC and SQL Server 2000. The Web log data in SWUST campus network have been analyzed by gathering type and regression.

本论文主要工作如下：研究了网络用户行为的概念与体系，并在此基础上进行了用户分类；探讨了建立网络用户行为分析系统的步骤、框架和系统各模块的功能，以及网络用户行为分析过程中的一些常用方法；研究了网络用户行为分析系统的数据源，并结合Web数据挖掘方法提出了相应的处理方法；利用VC和SQL Server 2000开发了用于数据处理的软件；利用聚类和回归分析方法，研究了西南科技大学校园网中的Web日志数据。

And the efficiency and precision of three methods have been analyzed and contrasted by using the CRISP_DM (Cross-industry Process for Data Mining) frame and the step of business understanding, data understanding, data preparation, modeling evaluation and development.

以CRISP_DM(Cross-industry Process for Data Mining)方法论为建模过程框架，按照商业理解、数据准备、建立模型、模型评估、模型发布的步骤，在建模过程中对三种算法的效率和精度进行分析和对比。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样