3-1 Measures of Random Syntactic Information Shannon Theory of Information Key point: 1. Information is something that can be used to remove uncertainty. 2. The amount of information can then be measured by the amount of uncertainty it removed. 3. In the cases of communications, only waveform is concerned while meaning and value are ignored. 4. Uncertainty and thus information are statistic in nature and statistical mathematics is enough

Problems to be concerned with 1. How should we define the concept of Information 2. What are the typical features of Information compared with matter and energy 3. What are the relationship and difference between Shannon Information and comprehensive Information 4. How to reasonably classify Information 5. How to properly represent Information

1.1 Information science Definition of information Science Information Science is a trans-disciplinary science with information as its object in study; the laws in information process as its content information methodology as its approach; and the strengthening human information functions particularly the intellectual ability, as its goal

第一节信息检索及其类型 第二节信息检索语言 第三节信息检索技术 第四节检索工具

一、数据库简介 二、数据库检索方式 三、数据库检索结果

一、数据库简介 二、数据库检索 三、检索结果的处理

一、数据库简介 二、检索途径 三、检索结果处理

一、总体介绍 二、收录范围 三、主要类且 四、主要特征

一、概述 二、学位论文全文数据库 三、学术会议全文数据库 四、数字化期刊 五、科技信息子系统 六、商务信息子系统 七、结果处理

第一节信息基本知识 第二节文献基本知识 第三节信息资源与文献信息系统