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Web content can expose their semantics by embedding RDF statements within webpages. Just as HTML was the building block of the original web, RDF is the building block of the Semantic Web. In other words, RDF specifies the syntax while ontologies specify the semantics. Meaning is added at a higher layer with what we call ontologies. Resource Description Framework ( RDF) provides the data model. This metadata will identify data, interlink data and relate data to concepts so that machines can understand them.ĭata must be uniquely identified and this is done using Uniform Resource Identifier ( URI) or Internationalized Resource Identifier ( IRI). Data (old and new) must be described with metadata. Semantic Web builds upon the foundations of the original web. The Semantic Web Stack (aka Semantic Web Cake).
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However, Semantic Web complements and even overlaps with AI/ ML. Though some ML algorithms require labelled data for training, there's no need to add semantic metadata to all data. This has been possible because of the availability of data to train ML algorithms. The mid-2010s have seen the arrival of voice assistants, chatbots, computer vision applications, and more. It therefore does appear that AI/ ML has gone ahead and enabled machines to see, hear and speak. Instead of asking machines to understand humans, we help machines to solve well-defined problems on well-defined data via well-defined operations. Semantic Web doesn't make machines intelligent in the sense of Artificial Intelligence or Machine Learning.
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Semantic Web is an attempt to describe and link web content in a manner that's meaningful to machines. It didn't know that the heading is actually the title of a blog post or that the text in italics is the author's name. For example, a computer could tell that a particular text is a heading or another text is in italics. Servers and desktop computers processed or displayed all this information but didn't understand them. Via hyperlinks, these linked to other webpages or documents anywhere on the web. In the original web of the 1990s information was shared as webpages or documents that could be understood by humans. Semantic Web, from web of documents to web of data.