分类数据

The classical Rough Set Theory requires a complete or correct system when the system involves assorting. But in fact, it is sometimes unavoidable for the system to contain noise data.

Pawlak提出的粗集模型处理的分类必须是完全正确的或肯定的，但在实际应用中，数据中包含噪音是难免的。

Basing on the classification and statistic data of services, we study the evolve-ment of services structure using the method of correspondence analysis.

本文在对服务业分类的基础上，以1991年到2000年各类服务业增加值构成比例作为样本数据，使用对应分析方法研究我国服务业结构变化的特点。

But under limited training sample size, increased dimension of remote sensing data means decreased samples/dimension ratio, which can lead to low classification accuracy if common statistic based pattern classification methods were used.

但在有限训练样本条件下，遥感数据维数的增高使样本/维数比率大大降低，采用常规的统计模式识别方法反而无法得到较好的分类结果。

Classification is one of important methods used in data mining.

分类是数据挖掘中的一种非常重要的方法。

Classification is one of the most important issues in data mining and machine learning.

分类是数据挖掘和机器学习中最重要的问题之一。

Its main function is to achieve some data classification.

主要功能是实现对一些数据的分类。

The generalization knowledge is represented as generalization-rules combined with generalization operations.

这个综合知识分类体系为本文基于知识的GIS专题数据综合的研究提供了理论基础。

With all methods and strategies,the classification algrthm can find a compact set of classification rules quickly from a large volume of data.

使用这些方法和策略，分类算法能够从大规模数据集中快速地发现一组简洁的规则。

First of all, the testing aims and contents of attack simulation are proposed. Then, the design and implementation of the attack simulation platform are presented in detail. Under the platform, that the authors build, three key issues in realization of the platform :the choice of testing datum, the classification of attack technology, and the attack testing zones and their compartmentalization are discussed in detail. Finally, the test results are given.

首先介绍攻击仿真的测试目标和内容，并提出了攻击仿真系统和仿真平台的设计和实现的详细方案；同时，在此基础上，对该平台的设计和实现的3个关键技术：测试数据的选择、攻击技术的分类研究、攻击测试域及其划分等进行了进一步的分析，最后给出并分析了实验测试结果。

Second,redundant cases are removed by combination of class features contained in cases with Condensing algorithm.

同时，训练数据分布的不均衡，也会导致kNN分类器的性能下降。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。