By Grigoris Antoniou, Frank van van Harmelen
The advance of the Semantic internet, with machine-readable content material, has the capability to revolutionize the realm broad internet and its use. A Semantic net Primer offers an creation and advisor to this rising box, describing its key rules, languages, and applied sciences. compatible to be used as a textbook or for self-study by way of pros, it concentrates on undergraduate-level primary innovations and strategies that would permit readers to continue with construction functions all alone. It comprises workouts, venture descriptions, and annotated references to suitable on-line fabrics. A Semantic internet Primer is the one to be had ebook at the Semantic net to incorporate a scientific therapy of the various languages (XML, RDF, OWL, and ideas) and applied sciences (explicit metadata, ontologies, and good judgment and inference) which are critical to Semantic internet improvement. The publication additionally examines such the most important comparable issues as ontology engineering and alertness situations. After an introductory bankruptcy, themes coated in succeeding chapters contain XML and similar applied sciences that help semantic interoperability; RDF and RDF Schema, the traditional information version for machine-processable semantics; and OWL, the W3C-approved general for an online ontology language extra vast than RDF Schema; ideas, either monotonic and nonmonotonic, within the framework of the Semantic net; chosen software domain names and the way the Semantic net would receive advantages them; the advance of ontology-based structures; and present debates on key concerns and predictions for the long run.
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Additional info for A Semantic Web Primer (Cooperative Information Systems)
Also, the W3C has deﬁned various languages on top of XML, such as SVG and SMIL. This approach has also been taken for RDF (see chapter 3). It should be noted that XML can serve as a uniform data exchange format between applications. In fact, XML’s use as a data exchange format between applications nowadays far outstrips its originally intended use as document markup language. Companies often need to retrieve information from their customers and business partners, and update their corporate databases accordingly.
The user may click on one of them to expand the subcategories. Also, ontologies are useful for improving the accuracy of Web searches. The search engines can look for pages that refer to a precise concept in an ontology instead of collecting all pages in which certain, generally ambiguous, keywords occur. In this way, differences in terminology between Web pages and the queries can be overcome. In addition, Web searches can exploit generalization/specialization information. If a query fails to ﬁnd any relevant documents, the search engine may suggest to the user a more general query.
We cannot wait until the full Semantic Web vision materializes — it may take another ten years for it to be realized to its full extent (as envisioned today, of course). In building one layer of the Semantic Web on top of another, two principles should be followed: • Downward compatibility. Agents fully aware of a layer should also be able to interpret and use information written at lower levels. For example, agents aware of the semantics of OWL can take full advantage of information written in RDF and RDF Schema.