摘要随着Internet的迅速普及，电子邮件以其快捷、方便、低成本的特点逐渐成为人们进行信息交流的主要媒介之一，但是随之而来的垃圾邮件也越来越泛滥。垃圾邮件占用了有限的存储、计算和网络资源，耗费了用户大量的处理时间，影响和干扰了用户的正常工作、生活和学习。如何有效地治理垃圾邮件是全世界共同面临的一道难题，也是互联网上目前有待解决的问题。本文首先介绍了电子邮件对人们日常生活的重要性，然后概要介绍了垃圾邮件过滤技术的发展历史。研究了三种过滤垃圾邮件的方法，分别是黑白名单技术、主题关键字过滤技术和贝叶斯策略，对这三种技术的设计方法做了说明，重点介绍了贝叶斯过滤技术的设计原理和实现步骤。64784

毕业论文关键词  垃圾邮件过滤  贝叶斯   

毕业设计说明书（论文）外文摘要

Title   The Design and Realization of the Software Maintenance  Daily Mail                                                                    

Abstract

With the rapid development of Internet, the technology of email is used widely in people's daily life. However, the occurrence of more and more spam emails is annoying to user, which causes the great waste of user's time, money as well as network bandwidth. And what's worse, it can be harmful to users. It affects and interferes with the user's normal work, life and studying. How to deal with spam emails effectively, that is a common difficult problem for all over the world. In the current Internet it is a problem for waiting for us to resolve. At first this paper introduces the e-mail's importance for people's daily life. Then it introduces simply development history of the anti-spam technology and researches three of spam filtering methods, they are black and white list technology, subject keyword filtering technology and bayesian strategy. Then the designing methods of three kinds of technology are introduced. Focusing on the bayesian filtering technology, this paper introduces its designing principle and implementation's steps.

Keywords  Spam filtering  bayesian

目   次 

1    绪论·1

1．1   项目研究背景介绍·1

1．2   项目研究现状分析·1

1．3   论文组织架构·2

2    邮件综述·3

2．1   电子邮件概述·3

2．2   垃圾邮件概述·4

2．3   黑白名单技术·5

2．4   关键词过滤技术·5

2．5   贝叶斯过滤技术·6

2．6  本章小结8

3    系统设计·9

3．1   系统功能设计·9

3．2   系统架构分析·9

3．3   系统模块设计12

3．4   本章小结12

4    系统分析13

4．1   数据持久层13

4．2   业务逻辑层16

4．3   表现层25

4．4   本章小结27

5    系统测试28

5．1   系统功能预测28

5．2   系统测试用例30

5．3   测试结果分析34

5．4   本章小结39

结       论40

致       谢41

参考文献42

1  绪论