Getting Started with Virtuoso, Open Source Edition. This is the nexus page for getting started with Virtuoso, and replaces the corresponding Installation and Evaluator's Guide sections of the commercial release manual.
After you have downloaded and built your copy of Virtuoso Open Source Edition (VOS), this page contains instructions for getting underway. You may wish to: Set up ODBC data sources to go to Virtuoso Try your favorite web-development tools or applications with Virtuoso as the data store Check out the SPARQL demo Take a tour of the web admin interface. With the demo database online, point the browser to The default user is dba with password dba (it is recommended that you change these now, if you didn't during installation); the rest is self-explanatory.
Take a tour of the online programming tutorials. Thomas Neumann: D5: Databases and Information Systems (Max-Planck-Institut für Informatik) XML Schema Datatypes in RDF and OWL. Abstract The RDF and OWL Recommendations use the simple types from XML Schema.
This document discusses three questions left unanswered by these Recommendations: What URIref should be used to refer to a user defined datatype? Which values of which XML Schema simple types are the same? How to use the problematic xsd:duration in RDF and OWL? In addition, we further describe how to integrate OWL DL with user defined datatypes (in appendix B). Corese. Downloads - Tutorial - Documentations - Applications - Contacts These pages are deprecated.
Please go to Corese Web Site Corese is a Semantic Web Factory implementing W3C RDF, RDFS, SPARQL 1.1 Query & Update, SPARQL Rules for RDF. Contact: olivier.corby at inria.fr Corese 3.0 New version based on kgram. OWL 2 Web Ontology Language Document Overview (Second Edition) About WordNet - WordNet - About WordNet. WordNet is supported by the National Science Foundation under Grant Number 0855157.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the creators of WordNet and do not necessarily reflect the views of the National Science Foundation. About WordNet WordNet® is a large lexical database of English. Nouns, verbs, adjectives and adverbs are grouped into sets of cognitive synonyms (synsets), each expressing a distinct concept. Synsets are interlinked by means of conceptual-semantic and lexical relations. WordNet superficially resembles a thesaurus, in that it groups words together based on their meanings. Structure The main relation among words in WordNet is synonymy, as between the words shut and close or car and automobile.
Relations The most frequently encoded relation among synsets is the super-subordinate relation (also called hyperonymy, hyponymy or ISA relation). RDF/OWL Representation of WordNet. Standard Upper Ontology Working Group (SUO WG) - Home Page. The Suggested Upper Merged Ontology (SUMO) - Ontology Portal. Sigma Knowledge Engineering Environment. Difference between Taxonomies and Ontologies - New Idea Engineering. A Reader Asks: What’s the difference between Taxonomies and Ontologies?
And do I even need to care !? Editor’s Note: For basic definitions of the terms in this article please see our online glossary of terms. Dr. Search Responds, Wow, that’s a great question! I’d summarize the similarities and differences this way: For casual users, these are very similar concepts. Beyond academic precision, ontologies try to represent knowledge in a form so carefully that even computers can derive meaning by traversing the various relationships.
Taxonomies can also be read and used in computer software, for example Verity’s Topic Sets were a form of taxonomy, and could be loaded into a profiler to classify incoming documents; many other companies have had this idea as well. Why this Matters? And as to your question “… and do I even need to care?” Are you considering Taxonomies for an upcoming project? SPIN - SPARQL Inferencing Notation. Created with Camtasia Studio 5. RDF Vocabulary Description Language 1.0: RDF Schema. Abstract RDF Schema provides a data-modelling vocabulary for RDF data.
RDF Schema is an extension of the basic RDF vocabulary. Status of This Document This section describes the status of this document at the time of its publication. Other documents may supersede this document. This document is an edited version of the 2004 RDF Schema Recommendation. This document was published by the RDF Working Group as a Recommendation. SPARQL. Event Ontology. Copyright © 2007 the authors above.
This work is licensed under a Creative Commons Attribution License. This copyright applies to the Event Ontology and accompanying documentation in RDF. This ontology uses W3C's RDF technology, an open Web standard that can be freely used by anyone. Table of Contents Introduction This document describes the Event ontology developed in the Centre for Digital Music in Queen Mary, University of London. This ontology is centered around the notion of event, seen here as the way by which cognitive agents classify arbitrary time/space regions, which is essentially the view expressed by Allen and Fergusson: [..] events are primarily linguistic or cognitive in nature. This ontology has already been proven useful in a wide range of context, due to its simplicity and usability: from talks in a conference, to description of a concert, or chords being played in a Jazz piece (when used with the Timeline ontology), festivals, etc.
Namespaces The Event Model.