INTRODUCTION TO SEMANTIC WEB CS 1150 – INTRODUCTION TO COMPUTER SCIENCE BY - SANJAYA WIJERATNE

OVERVIEW What is Semantic Web? Evolution of the Web Semantic Web Technologies Applications of Semantic Web 2

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WHAT IS SEMANTIC WEB? The Semantic Web is the extension of the World Wide Web that enables people to share content beyond the boundaries of applications and websites. It has been described in rather different ways: as a utopic vision, as a web of data, or merely as a natural paradigm shift in our daily use of the Web. Most of all, the Semantic Web has inspired and engaged many people to create innovative semantic technologies and applications. 4 Source –

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COMPARISON – WEB 1.0, WEB 2.0 AND WEB 3.0 Web 1.0Web 2.0Web 3.0 Page ContentMostly Read Only (Static)Widely Read-WritePortable and Personal Web Page TypesMostly Home/Company PagesBlogs, Wiki, Social Media, Information Sharing Streaming Data with Real-time updates Application TypesWeb FormsWeb ApplicationsSmart Applications Content UsagePublishers Owned ContentCommunities Shared Content Applications Shared and Consolidated Content Knowledge SeekingEncyclopedias (Eg – Britannica)Social Knowledge-basesWeb of Data TechnologiesHTMLXML/RSSRDF/RDFS/OWL 8 Semantic Web Introduction Video –

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SEMANTIC WEB TECHNOLOGIES OWL (Web Ontology Language) – Use to Represent Knowledge in Semantic Web Applications Eg – Egg is a Concept. Egg has 6g of Protein. RDF/RDFS (Resource Description Framework) – Data Modelling Language for Semantic Web. All data are stored as RDF triples Eg – SPARQL (SPARQL Protocol and RDF Query Language) – Used to Query RDF Datasets 11 Source –

APPLICATIONS OF SEMANTIC WEB Widely Known Applications Google Knowledge Graph IBM Watson Apple’s SIRI Developed at Kno.e.sis Twitris and many others 12

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