如何在 RDF 中表示 5 元组? [英] How can I represent a 5-tuple in RDF?

问题描述

在 RDF 中，我看到过这样的例子

In RDF I have seen examples like

John | Is a Friend of | James
James | Is a friend of | Jill
Jill | Likes | Snowboarding
Snowboarding | Is a | Sport 

但是如果在一个由 5 元组描述的模型中发生了一些事情

But if something happened in a model which is described by a 5-tuple called

{Subject, Event, Beneficiary, Time, Place}

例如:

"John met Thomas yesterday in garden"  

五元组

John - Subject
met - Event
Thomas - Beneficiary
yesterday - Time
in garden - Place

如何在 RDF 中表示?

How can it be represented in RDF?

推荐答案

这是一个 n 元关系的例子.它们通常在额外节点的帮助下在 RDF 中建模，该节点可能是一个空白节点(但不一定必须如此).

This is an example of n-ary relationships. They are typically modeled in RDF with the help of an extra node, which may be a blank node (but does not necessarily have to).

W3C语义网络最佳实践和部署工作组已经发布了RDF 中 n-ary 关系的注释.

The W3C Semantic Web Best Practices and Deployment Working Group has published a note on n-ary relationships in RDF.

在 RDF 中表达示例的多种方式之一可能如下所示

One of many ways to express your example in RDF could look like

ex:John ex:hasMeeting 
    [ a ex:Meeting;
      ex:beneficiary ex:Thomas;
      ex:date ex:Yesterday;
      ex:place ex:Garden.
    ] .

此解决方案使用一个空白节点(在海龟语法中缩写为 [])和 ex: 命名空间中的虚构个体和属性.

This solution uses a blank node (abbreviated with [] in turtle syntax) and imaginary individuals and properties in the ex: namespace.

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