使用API，您可以为要提交的每个信息项随意定义您自己的数据格式，在语义web中，这类似于定义您自己的本体。
With an API you are free to define your own data format for each item of information you want to deliver, and in the Semantic Web this is analogous to defining your own ontology.
这个搜索引擎的最关键的一点就是对本体论的强大应用，类似于标签的概念，制作用户和搜索item的通用词表。
The key point about this particular recommendation engine is its strong use of an ontology, similar in concept to tags, to develop a common vocabulary for items and users.
本教程的例子建立了用于日志和预约系统的本体和查询，可以生成带语义标签的类似twitter的微型博客。
For the example used throughout this tutorial, you'll build the ontologies and queries for a journaling and booking system to produce semantically tagged twitter-like micro-blogs.
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