Ontology Web http://www.ontologyweb.com Become a triple in the web! Sun, 31 Jul 2011 13:10:12 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 Sparql search engine queries http://www.ontologyweb.com/2010/10/sparql-search-engine-queries/ http://www.ontologyweb.com/2010/10/sparql-search-engine-queries/#comments Tue, 26 Oct 2010 08:07:07 +0000 Working Ontologist http://www.ontologyweb.com/?p=266


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 with the same type

Select all instances of the current type.

SELECT ?otherInstances

WHERE {

    ?resource rdfs:label "Adidas" .

    ?resource rdf:type ?type .

    ?objProp rdfs:range ?type  .

    ?otherInstances ?objProp ?resource .

}

 

Find other classes with the same properties

Select all classes with the same properties as the current instance with :label "Adidas".

SELECT ?otherClasses

WHERE {

    ?resource rdfs:label "Adidas" .

    ?resource rdf:type ?type .

    ?objProp rdfs:range ?type  .

    ?otherInstances ?objProp ?resource .

    ?otherInstances rdf:type ?otherClasses .

}

]]> http://www.ontologyweb.com/2010/10/sparql-search-engine-queries/feed/ 1 Ontology Design Patterns (ODP) http://www.ontologyweb.com/2010/08/ontology-design-patterns-odp/ http://www.ontologyweb.com/2010/08/ontology-design-patterns-odp/#comments Tue, 03 Aug 2010 06:55:56 +0000 Working Ontologist http://www.ontologyweb.com/?p=251 Regarding best practice hints, the following two links correspond to two repositories of Ontology Design Patterns:

]]> http://www.ontologyweb.com/2010/08/ontology-design-patterns-odp/feed/ 0 Media Annotations Working Group Video, Audio, Images http://www.ontologyweb.com/2010/05/media-annotations-working-group-video-audio-images/ http://www.ontologyweb.com/2010/05/media-annotations-working-group-video-audio-images/#comments Fri, 07 May 2010 04:49:54 +0000 Working Ontologist http://www.ontologyweb.com/?p=249 The Media Annotations Working Group published an ontology for media resource.

 

Overview of the Media Annotations Working Goup

]]> http://www.ontologyweb.com/2010/05/media-annotations-working-group-video-audio-images/feed/ 0 Mapping relational data to RDF http://www.ontologyweb.com/2010/05/mapping-relational-data-to-rdf/ http://www.ontologyweb.com/2010/05/mapping-relational-data-to-rdf/#comments Thu, 06 May 2010 11:26:08 +0000 Working Ontologist http://www.ontologyweb.com/?p=246 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.
]]> http://www.ontologyweb.com/2010/05/mapping-relational-data-to-rdf/feed/ 0 Ontology Web on iPhone, iPad & iPod Touch http://www.ontologyweb.com/2010/05/ontology-web-on-iphone-ipad-ipod-touch/ http://www.ontologyweb.com/2010/05/ontology-web-on-iphone-ipad-ipod-touch/#comments Thu, 06 May 2010 09:59:16 +0000 Working Ontologist http://www.ontologyweb.com/?p=244 Today our Iphone app is available for Mobile users. Simply navigate to www.ontologyweb.com with the Safari-browser.

]]> http://www.ontologyweb.com/2010/05/ontology-web-on-iphone-ipad-ipod-touch/feed/ 0 XPath function reference http://www.ontologyweb.com/2010/04/xpath-function-reference/ http://www.ontologyweb.com/2010/04/xpath-function-reference/#comments Wed, 21 Apr 2010 09:05:32 +0000 Working Ontologist http://www.ontologyweb.com/?p=240 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.

]]> http://www.ontologyweb.com/2010/04/xpath-function-reference/feed/ 0 Triple store http://www.ontologyweb.com/2010/02/triple-store/ http://www.ontologyweb.com/2010/02/triple-store/#comments Tue, 02 Feb 2010 08:52:09 +0000 Working Ontologist http://www.ontologyweb.com/2010/02/triple-store/ Creating à triple store based on mysql. From this triple store several websites are feeded.

]]> http://www.ontologyweb.com/2010/02/triple-store/feed/ 0 Startup of new semantic project http://www.ontologyweb.com/2010/01/startup-of-new-semantic-project/ http://www.ontologyweb.com/2010/01/startup-of-new-semantic-project/#comments Fri, 22 Jan 2010 11:32:58 +0000 Working Ontologist http://www.ontologyweb.com/?p=204 Just started a new semantic web project. I will write about this on this website!

It is a project about traveling :)

]]> http://www.ontologyweb.com/2010/01/startup-of-new-semantic-project/feed/ 0 OWL 2 Web Ontology Language Primer http://www.ontologyweb.com/2009/12/owl-2-web-ontology-language-primer/ http://www.ontologyweb.com/2009/12/owl-2-web-ontology-language-primer/#comments Mon, 14 Dec 2009 15:14:45 +0000 Working Ontologist http://www.ontologyweb.com/?p=196 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

]]> http://www.ontologyweb.com/2009/12/owl-2-web-ontology-language-primer/feed/ 0 Frankfurt Semantic Web December Meetup http://www.ontologyweb.com/2009/12/frankfurt-semantic-web-december-meetup/ http://www.ontologyweb.com/2009/12/frankfurt-semantic-web-december-meetup/#comments Mon, 14 Dec 2009 12:39:18 +0000 Working Ontologist http://www.ontologyweb.com/?p=193

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/

]]> http://www.ontologyweb.com/2009/12/frankfurt-semantic-web-december-meetup/feed/ 0