OWL is a language for processing web information.
OWL 是一门供处理 web 信息的语言。

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What You Should Already Know
你应该具备的知识

Before you study OWL you should have a basic understanding of XML, XML Namespaces and RDF.
在您学习 OWL 之前，应当对 XML、XML 命名空间以及 RDF 有基本的了解。

If you want to study these subjects first, please visit: XML Tutorial and RDF Tutorial.
如果首先学习这些项目，请访问 XML教程 和 RDF 教程。

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What is OWL?
什么是 OWL ？

• OWL stands for Web Ontology Language
  OWL 指的是 web 本体语言
• OWL is built on top of RDF
  OWL 构建在 RDF 的顶端之上
• OWL is for processing information on the web
  OWL 用于处理 web 上的信息
• OWL was designed to be interpreted by computers
  OWL 被设计为供计算机进行解释
• OWL was not designed for being read by people
  OWL 不是被设计为供人类进行阅读的
• OWL is written in XML
  OWL 由 XML 来编写
• OWL has three sublanguages
  OWL 拥有三种子语言
• OWL is a web standard
  OWL 是一项 web 标准

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What is Ontology?
什么是“本体（Ontology）”？

Ontology is about the exact description of things and their relationships.
本体”这个术语来自于哲学，它是研究世界上的各种实体以及他们是怎么关联的科学。

For the web, ontology is about the exact description of web information and relationships between web information.
对于 web，本体则关于对 web 信息及 web 信息之间的关系的精确描述。

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Why OWL?
为什么要有 OWL ？

OWL is a part of the "Semantic Web Vision" - a future where:
OWL 是“语义网远景”的组成部分 - 目标是：

• Web information has exact meaning
  Web 信息拥有确切的含义
• Web information can be processed by computers
  Web 信息可被计算机理解并处理
• Computers can integrate information from the web
  计算机可从 Web 上整合信息

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OWL was Designed for Processing Information
OWL 用于为计算机处理信息

OWL was designed to provide a common way to process the content of web information (instead of displaying it).
OWL 被设计为提供一种通用的处理 Web 信息的内容的方法（而不是把它显示出来）。

OWL was designed to be read by computer applications (instead of humans).
OWL 被设计为由计算机应用程序来读取（而不是被人类）。

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OWL is Different from RDF
OWL 与 RDF 不同

OWL and RDF are much of the same thing, but OWL is a stronger language with greater machine interpretability than RDF.
OWL 与 RDF 有很多相似之处，但是较之 RDF， OWL 是一门具有更强机器解释能力的更强大的语言。

OWL comes with a larger vocabulary and stronger syntax than RDF.
与 RDF 相比，OWL 拥有更大的词汇表以及更强大的语言。

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OWL Sublanguages
OWL 子语言

OWL has three sublanguages:
OWL 有三门子语言：

• OWL Lite
• OWL DL (includes OWL Lite)
  OWL DL（包含OWL Lite）
• OWL Full (includes OWL DL)
  OWL Full（包含OWL DL)

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OWL is Written in XML
OWL 是用 XML 形式写成的

By using XML, OWL information can easily be exchanged between different types of computers using different types of operating system and application languages.
通过使用 XML，OWL 信息可在使用不同类型的操作系统和应用语言的不同类型的计算机之间进行交换。

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OWL Example (Airport)
OWL 例子（机场）

OWL Resource: http://www.daml.org/2001/10/html/airport-ont
OWL 资源：http://www.daml.org/2001/10/html/airport-ont

Class: Airport
分类：Airport

Properties:
属性：

• elevation海拔
• iataCode 代号
• icaoCode 代号
• latitude 纬度
• location 位置
• longitude 经度
• name 名称

Produced using dumpont2.java
使用 dumpont2.java 制作。

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OWL is a Web Standard
OWL 是 web 标准

OWL became a W3C (World Wide Web Consortium) Recommendation in February 2004.
OWL 于 2004 年 2 月成为一项 W3C 的推荐标准。

A W3C Recommendation is understood by the industry and the web community as a web standard. A W3C Recommendation is a stable specification developed by a W3C Working Group and reviewed by the W3C Membership.
W3C 推荐（标准）被业界以及 web 团体奉为 web 标准。W3C推荐标准 是由 W3C 工作组开发并经 W3C 成员评审的稳定规范。

在 w3c 有关 OWL 的文档：http://www.w3.org/2004/OWL/

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