By Grigoris Antoniou, Frank van Harmelen
The improvement of the Semantic net, with machine-readable content material, has the aptitude to revolutionize the realm extensive internet and its makes use of. A Semantic net Primer offers an creation and consultant to this nonetheless rising box, describing its key principles, languages, and applied sciences. appropriate to be used as a textbook or for self-study by way of execs, it concentrates on undergraduate-level primary thoughts and strategies that might let readers to continue with construction purposes all alone and contains routines, undertaking descriptions, and annotated references to suitable on-line fabrics. A Semantic net Primer offers a scientific therapy of the various languages (XML, RDF, OWL, and principles) and applied sciences (explicit metadata, ontologies, and common sense and inference) which are principal to Semantic internet improvement in addition to such the most important comparable subject matters as ontology engineering and alertness situations. This considerably revised and up to date moment version displays fresh advancements within the box, protecting new program components and instruments. the hot fabric incorporates a dialogue of such subject matters as SPARQL because the RDF question language; OWL DLP and its attention-grabbing useful and theoretical homes; the SWRL language (in the bankruptcy on rules); OWL-S (on which the dialogue of internet providers is now based). the hot ultimate bankruptcy considers the cutting-edge of the sphere this day, captures ongoing discussions, and descriptions the main not easy matters dealing with the Semantic internet sooner or later. Supplementary fabrics, together with slides, on-line models of some of the code fragments within the e-book, and hyperlinks to additional examining, are available at www.semanticwebprimer.org.
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Extra info for A Semantic Web Primer,
6 shows how XML documents can be transformed to be displayed (or for other purposes) using XSL and XSLT. 2 The XML Language 29 The XML Language An XML document consists of a prolog, a number of elements, and an optional epilog (not discussed here). 1 Prolog The prolog consists of an XML declaration and an optional reference to external structuring documents. > It speciﬁes that the current document is an XML document, and deﬁnes the version and the character encoding used in the particular system (such as UTF-8, UTF-16, and ISO 8859-1).
Keyword-based searches will identify the words physiotherapy and consultation hours. And an intelligent agent might even be able to identify the personnel of the center. But it will have trouble distinguishing the therapists from the secretary, and even more trouble ﬁnding the exact consultation hours (for which it would have to follow the link to the State Of Origin games to ﬁnd when they take place). The Semantic Web approach to solving these problems is not the development of superintelligent agents.
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. If there is not an agreed common standard like XML, then specialized processing and querying software must be developed for each partner separately, leading to technical overhead; moreover, the software must be updated every time a partner decides to change its own database format.