RDF Introduction
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资源描述框架（RDF）是用于描述网络资源的 W3C 标准，比如网页的标题、作者、修改日期、内容以及版权信息。
什么是 RDF？
- RDF 指资源描述框架（Resource Description Framework）
- RDF 是一个用于描述 Web 上的资源的框架
- RDF 提供了针对数据的模型以及语法，这样独立的团体们就可以交换和使用它
- RDF 被设计为可被计算机阅读和理解
- RDF 被设计的目的不是为了向人们显示出来
- RDF is written in XML
- RDF 是 W3C 语义网络活动的组成部分
- RDF 是一个 W3C 推荐标准
RDF - 应用举例
- 描述购物项目的属性，比如价格以及可用性
- Describe the timeline of Web events
- Describe information about web pages, such as content, author, and the dates created and modified
- Describe the content and rating of network images
- Describe content for search engines
- Describe an electronic library
RDF was designed to be readable by computers
RDF was designed to provide a universal method of describing information so that it can be read and understood by computer applications.
RDF was not designed to be displayed on the web.
RDF is written in XML
RDF documents are written in XML. The XML language used by RDF is called RDF/XML.
By using XML, RDF information can be easily exchanged between computers using different types of operating systems and application languages.
RDF and Semantic Web
RDF language is a part of the W3C Semantic Web Activity. The goal of W3C's 'Semantic Web Vision' is:
- Web information has a precise meaning
- Web information can be understood and processed by computers
- Computers can integrate information from the Web
RDF is a W3C standard
RDF became a W3C standard in February 2004.
The W3C recommendations (standards) are regarded as web standards by the industry and web communities. The W3C recommended standards are stable specifications developed by W3C working groups and reviewed by W3C members.
You can find the official W3C recommended standards through this link.
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