Articles By: Working Ontologist

Sparql search engine queries

By Pim Keizer A simple example of some generic sparql queries for use in a  search engine. Search phrase:    “Adidas”  Instance match Select all instances with label "Adidas".   SELECT * WHERE {     ?resource rdfs:label "Adidas" . }   Find synonyms Select all classes that are of the same type. SELECT ?synonyms WHERE {     ?resource rdfs:label "Adidas" .     ?resource rdf:type ?type .     ?synonyms rdf:type ?type . }   Find other instances [...]

Ontology Design Patterns (ODP)

Regarding best practice hints, the following two links correspond to two repositories of Ontology Design Patterns: http://ontologydesignpatterns.org/wiki/Main_Page http://www.gong.manchester.ac.uk/odp/html/index.html

Media Annotations Working Group Video, Audio, Images

The Media Annotations Working Group published an ontology for media resource.   Overview of the Media Annotations Working Goup

Mapping relational data to RDF

There has been many research in the domain of mapping relational data from databases like MySQL or Oracle to RDF data. D2R Server - http://www4.wiwiss.fu-berlin.de/bizer/d2r-server/  Publishing information about the Web-based Systems Group @ Freie Universität Berlin. It can be accessed using (1) your plain old web browser (2) Semantic Web browsers (3) SPARQL query clients. Virtuoso - http://virtuoso.openlinksw.com/ Virtuoso is an innovative enterprise grade server that cost-effectively delivers an unrivaled platform for Data Access, Integration and Management.

Ontology Web on iPhone, iPad & iPod Touch

Today our Iphone app is available for Mobile users. Simply navigate to www.ontologyweb.com with the Safari-browser.

XPath function reference

New website: www.XPath.nl On this website a function reference for XPath is found. The option to use the RSS feed makes it possible to place the link in the toolbar of your browser. From there you are always one click away from the information. Very useful for developers of XSD, XSLT and schematron.

Triple store

Creating à triple store based on mysql. From this triple store several websites are feeded.

Startup of new semantic project

Just started a new semantic web project. I will write about this on this website! It is a project about traveling

OWL 2 Web Ontology Language Primer

In the W3C Recommendation of 27 October 2009 the OWL 2 Web Ontology Language is presented. The primer provides an approachable introduction to OWL 2, including orientation for those coming from other disciplines. Visit W3C

Frankfurt Semantic Web December Meetup

Location & date: Frankfurt – Germany Tuesday, December 15 at 5:00 PM   Description: Zuerst: Die initiale Start-Up Gruppe trifft sich um die nächsten Schritte zu diskutieren. Alle sind herzlich willkommen. Ideen und konkrete Beiträge hoch erwünscht. Dann: Ein Ueberblick über realisierte Semantic Web Applications von verschiedenen Anbietern in der Banken- und Versicherungswelt wird von Leo Keller, Blue Ocean SWS GmbH gegeben   More information: http://www.meetup.com/Frankfurt-Semantic-Web-Meetup/calendar/11992164/http://www.meetup.com/Frankfurt-Semantic-Web-Meetup/calendar/11992164/