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Sunday, 17 June 2018

SEMANTIC WEB TECHNOLOGIES: AN OVERVIEW

ABSTRACT--

The term “Semantic Web” is often used more specifically to refer to the formats and technologies that enable it . These technologies include the Resource Description Framework (RDF), a variety of data substitution formats, and notations such as RDF Schema and the Web Ontology Language, all of which are intended to provide a formal description of concepts, terms, and relationships within a given knowledge domain. In the last decade the increasing popularity of the World Wide Web has lead to an exponential growth in the number of pages available on the Web. This huge number of Web pages makes it increasingly difficult for users to send required information. To enable machines to support the user in solving information problems, the Semantic Web proposes an extension to the existing Web that makes the semantics of the Web pages machine processable. The Semantic Web is well recognized as an effective infrastructure to enhance visibility of knowledge on the Web. The foundation of the Semantic Web is ontology , which is used to unambiguously represent our conceptualizations. Ontology engineering in the Semantic Web is primarily supported by languages such as RDF, RDFS and OWL. This article discusses the requirements of ontology’s in the context of the Web, compares the above three languages with existing knowledge representation formalisms, and surveys tools for managing and applying ontology’s.

KEYWORDS: Semantic Analysis, Ontology, Resource Description Framework, Web Ontology Language.

INTRODUCTION--

 The Semantic Web is well acknowledged as an effective infrastructure to augment visibility of knowledge on the Web. The Semantic Web takes the elucidation additional. The Semantic Web is not a separate entity from the WWW. The Semantic Web is a visualization to augment the current web with dignified knowledge and data that can be processed by computers thereby shifting the focus away from a human-centered interaction. Efforts are in progress to define the format and meaning of the language of such a Semantic Web. The structured data on the Semantic Web could provide both humans and computers, while a part of it will be formalized knowledge and will be used only by machines. The Semantic Web aims to put together a common framework that consent to data to be shared and recycle across applications, enterprises, and community limitations. It recommends to use RDF as a flexible data model and use ontology to represent data semantics.

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