Case Study: CRUZAR — An application of semantic matchmaking for eTourism in the city of Zaragoza. Maria Jesús Fernández, City Council of Zaragoza and Antonio Campos, CTIC Foundation, Spain August 2008 General Description The web is a big showcase for cities that want to build their tourism industry. Nowadays, many tourists plan their trips in advance using the information that is available on web pages. Cities compete against each other to offer the most attractive and complete information and services through the tourism section of their web sites. However, this often leads to information-bloated and multimedia-rich web sites which are similar to digital versions of printed brochures. Everyone receives the same information, regardless of their interests.
CRUZAR is a web application that uses expert knowledge (in the form of rules and ontologies) and a comprehensive repository of relevant data (instances) to build a custom route for each visitor profile. CRUZAR, is available at the web site of the city of Zaragoza (Spain). Technical details of the solution POIs ranking Route Planning. South Korea. Mappings.dbpedia. How Best Buy is Using The Semantic Web. Yesterday we wrote about the increasing usage of Semantic Web technologies by large commercial companies like Facebook, Google and Best Buy.
The Semantic Web is a Web of added meaning, which ultimately enables smarter and more personalized web apps to be built. In this post we explore how a leading U.S. retailer, Best Buy, is using a Semantic Web markup language called RDFa to add semantics to its webpages. This is not just an academic exercise for Best Buy. As we will see, semantic technology has already led to increased traffic and better service to its customers. We spoke to Jay Myers, Lead Web Development Engineer at BestBuy.com, to find out how. ReadWriteWeb's Guide to The Semantic Web: Myers told us that the primary goal of using semantic technologies was to increase the visibility of its products and services. The process of adding RDFa to Best Buy's webpages began two years ago, when the company began to look for ways to get more visibility to its stores on the Web. Google Gives Search a Refresh. Open Linked Data Discovery, Proof and Trust.
I have been giving more and more thought lately about the top two layers of the semantic web "layer cake" – "proof," and above it, "trust. " The lower layers receive a lot of attention – RDF (and other data structures), OWL (and ontologies in general), SPARQL, URIs, and so forth – but trust and proof haven't been, I think, explored with the same depth as other aspects of the semantic web. I came to wondering, what if those underlying lower layers came together? What if there was widespread adoption of these technologies, and heaps of well-structured, properly-linked data became available?
In this sea of linked data, wouldn't there be some resources that deliberately misrepresented their origin, the data they provided, or both? And if so, what mechanisms might be employed to mitigate the negative impact of these "bad" linked data sources? While there might be a paucity of discussion surrounding trust and proof in the semantic web, it is by no means non-existent. Andreas Harth Dr. Juan F. The Semantic Web: An Introduction. This document is designed as being a simple but comprehensive introductory publication for anybody trying to get into the Semantic Web: from beginners through to long time hackers. Recommended pre-reading: the Semantic Web in Breadth. Table Of Contents What Is The Semantic Web? The Semantic Web is a mesh of information linked up in such a way as to be easily processable by machines, on a global scale.
You can think of it as being an efficient way of representing data on the World Wide Web, or as a globally linked database. The Semantic Web was thought up by Tim Berners-Lee, inventor of the WWW, URIs, HTTP, and HTML. What's the rationale for such a system? So the Semantic Web can be seen as a huge engineering solution... but it is more than that. URI - Uniform Resource Identifier A URI is simply a Web identifier: like the strings starting with "http:" or "ftp:" that you often find on the World Wide Web. RDF - Resource Description Framework A triple can simply be described as three URIs.
Logic. SWRL: A Semantic Web Rule Language Combining OWL and RuleML. W3C Member Submission 21 May 2004 This version: Latest version: Authors: Ian Horrocks, Network Inference Peter F. Patel-Schneider, Bell Labs Research, Lucent TechnologiesHarold Boley, National Research Council of CanadaSaid Tabet, Macgregor, Inc.Benjamin Grosof, Sloan School of Management, MITMike Dean, BBN Technologies Copyright © 2004 National Research Council of Canada, Network Inference, and Stanford University. Abstract This document contains a proposal for a Semantic Web Rule Language (SWRL) based on a combination of the OWL DL and OWL Lite sublanguages of the OWL Web Ontology Language with the Unary/Binary Datalog RuleML sublanguages of the Rule Markup Language. Status of this document The W3C Team Comment discusses this submission in the context of W3C activities. 1.
The proposed rules are of the form of an implication between an antecedent (body) and consequent (head). 2. 2.1. Axiom ::= rule 2.2. ? RIF RDF and OWL Compatibility. Abstract Rules interchanged using the Rule Interchange Format RIF may depend on or be used in combination with RDF data and RDF Schema or OWL ontologies. This document, developed by the Rule Interchange Format (RIF) Working Group, specifies the interoperation between RIF and the data and ontology languages RDF, RDF Schema, and OWL. Status of this Document May Be Superseded This section describes the status of this document at the time of its publication.
This document is being published as one of a set of 13 documents: Document Unchanged There have been no changes to the body of this document since the previous version. Please Send Comments Please send any comments to public-rif-comments@w3.org (public archive). Endorsed By W3C This document has been reviewed by W3C Members, by software developers, and by other W3C groups and interested parties, and is endorsed by the Director as a W3C Recommendation. Patents 1 Overview of RDF and OWL Compatibility 2 Symbols in RIF versus RDF/OWL (Informative) RIF Basic Logic Dialect. W3C Recommendation 5 February 2013 This version: Latest version: Previous version: Editors: Harold Boley, National Research Council Canada Michael Kifer, State University of New York at Stony Brook, USA Please refer to the errata for this document, which may include some normative corrections.
A color-coded version of this document showing changes made since the previous version is also available. This document is also available in these non-normative formats: PDF version. See also translations. Copyright © 2013 W3C® (MIT, ERCIM, Keio, Beihang), All Rights Reserved. Abstract This document, developed by the Rule Interchange Format (RIF) Working Group, specifies the Basic Logic Dialect, RIF-BLD, a format that allows logic rules to be exchanged between rule systems. Status of this Document May Be Superseded This document is being published as one of a set of 13 documents: Patents. SPARQL Query Language for RDF. W3C Recommendation 15 January 2008 New Version Available: SPARQL 1.1 (Document Status Update, 26 March 2013) The SPARQL Working Group has produced a W3C Recommendation for a new version of SPARQL which adds features to this 2008 version.
Please see SPARQL 1.1 Overview for an introduction to SPARQL 1.1 and a guide to the SPARQL 1.1 document set. This version: Latest version: Previous version: Editors: Eric Prud'hommeaux, W3C <eric@w3.org> Andy Seaborne, Hewlett-Packard Laboratories, Bristol <andy.seaborne@hp.com> Please refer to the errata for this document, which may include some normative corrections. See also translations. Copyright © 2006-2007 W3C® (MIT, ERCIM, Keio), All Rights Reserved. Abstract RDF is a directed, labeled graph data format for representing information in the Web. Status of This Document This is a W3C Recommendation. Appendices ? ? ? ? Planète Web Sémantique.