因此RDF图可以被看作是有向标记图(Directed Labeled Graph),其中节点以URI或者文字值来标记,而有向边以谓语的URI来标记。每条有向边及其所连接的两个节点对应于一个RDF三元组。
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The nodes of the graph are resources and literals, and they are connected by directed edges, which are labeled with predicates.
图的节点是资源和文字，节点之间用有向边连接，边上用谓词标记。
RDF serves as the foundation upon which the Semantic Web is built: it is a standard to represent data as a directed, labeled graph.
RDF是语义web建立的基础：将数据表示成有向加权图的一种标准。
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