All, We are about to transition DBpedia from a Virtuoso 5 instance over to a Virtuoso 6.x (Cluster Edition) instance sometime this week after a few days of live testing against a temporary secondary instance [1]. The new release also includes our much vaunted server side faceted browsing [2] that leverages SPARQL aggregates and configurable interaction time for query payloads (*note the retry feature which increments the interactive time window to demonstrate full effects*).
In the process of conducting this effort, we discovered that the Yago Class Hierarchy hadn't been loaded (courtesy of some TBox subsumption work performed by the W3C's HCLS project participants such as Rob Frost). In addition, Virtuoso 6.x introduces TBox subsumption via new Virtuoso-SPARQL transitivity options as exemplified below using the V6.0 instance at: http://dbpedia2.openlinksw.com:8895/sparql (or /isparql). -- Yago Subsumption based AlphaReceptors query select ?y from <http://dbpedia.org/resource/classes/yago#> where { { select * where { ?x rdfs:subClassOf ?y . } } option (transitive, t_distinct, t_in (?x), t_out (?y) ) . filter (?x = <http://dbpedia.org/class/yago/AlphaReceptor105609111>) } -- Yago Subsumption based Receptors query select ?x from <http://dbpedia.org/resource/classes/yago#> where { { select * where { ?x rdfs:subClassOf ?y . } } option (transitive, t_distinct, t_in (?x), t_out (?y) ) . filter (?y = <http://dbpedia.org/class/yago/Receptor105608868>) } Links: 1. http://dbpedia.org/resource/DBpedia - test URI 2. http://dbpedia2.openlinksw.com:8895/fct/facet.vsp - server hosted faceted browser. -- Regards, Kingsley Idehen Weblog: http://www.openlinksw.com/blog/~kidehen President& CEO OpenLink Software Web: http://www.openlinksw.com ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Dbpedia-discussion mailing list Dbpedia-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
