Comments on Ontology-Based Semantic Annotation Prototypes
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The key to realizing the semantic Web is to mark up the Web resources,such as Web pages and services,using ontology terms.Ontology-based annotation prototypes support content providers to add semantic metadata to Web pages and make machines and humans understand.This paper first makes a chief introduction of current ontology-based semantic annotation prototypes,then makes a survey on them from several facets and compares them,and finally points out their shortcomings.