On 1/17/11 4:05 PM, Jeff Pound wrote: > Hi everyone, > > I was wondering if anyone has gone to the trouble of computing the "open" > KB, as opposed the full closure which is provided in the downloads. > Essentially, I'm looking for a version of dbpedia with all the redundancy > removed. For example, the following four facts are in "instance_types_en.nt": > > <http://dbpedia.org/resource/Abraham_Lincoln> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> > <http://www.w3.org/2002/07/owl#Thing> . > <http://dbpedia.org/resource/Abraham_Lincoln> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> > <http://dbpedia.org/ontology/Person> . > <http://dbpedia.org/resource/Abraham_Lincoln> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> > <http://dbpedia.org/ontology/Politician> . > <http://dbpedia.org/resource/Abraham_Lincoln> > <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> > <http://dbpedia.org/ontology/President> . > > However, the first three facts are implied by the fourth using the dbpedia > ontology (i.e., a President is-a politician, which is-a Person, which is-a > Thing).
You can use inference rules to deal with redundancy and other issues re., DBpedia e.g. property name changes in the latest cut [1]. Hopefully, we'll get some notes with examples in the coming days. In the meantime if you go to <http://dbpedia.org/fct>, enter a text pattern e.g., "Lincoln", hit enter, and click on the "options" link in the navigation DIV, to see the existing inference rules[2]. Links: 1. http://twitpic.com/3qzme7/full -- visual show list of rules associated with DBpedia instance 2. http://virtuoso.openlinksw.com/presentations/SPARQL_Tutorials/SPARQL_Tutorials_Part_2/SPARQL_Tutorials_Part_2.html#%2845%29 - Virtuoso SPARQL inference rules examples . Kingsley > Before I go and write my own tool to produce this data set I thought I'd > check to see if anyone has either a tool or a download I could use. > > Thanks, > Jeff Pound > > > ------------------------------------------------------------------------------ > Protect Your Site and Customers from Malware Attacks > Learn about various malware tactics and how to avoid them. Understand > malware threats, the impact they can have on your business, and how you > can protect your company and customers by using code signing. > http://p.sf.net/sfu/oracle-sfdevnl > _______________________________________________ > Dbpedia-discussion mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion > -- Regards, Kingsley Idehen President& CEO OpenLink Software Web: http://www.openlinksw.com Weblog: http://www.openlinksw.com/blog/~kidehen Twitter/Identi.ca: kidehen ------------------------------------------------------------------------------ Protect Your Site and Customers from Malware Attacks Learn about various malware tactics and how to avoid them. Understand malware threats, the impact they can have on your business, and how you can protect your company and customers by using code signing. http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
