Hi, On 08.08.2008, at 11:58, Jens Lehmann wrote:
>>>> * The dbpedia data on buildings seems richer - but I can't find out >>>> how to retrieve ALL architectural projects in dbpedia. I tried [2] >>>> athttp://dbpedia.org/sparql >>>> , but it stops athttp://dbpedia.org/resource/Beijing_Zoo >>> There is a limit of 1000 results on the SPARQL endpoint. So either >>> you >>> have to use limit and offset or you just download the complete YAGO >>> file >>> and grep for http://dbpedia.org/class/yago/Building102913152. The >>> data >>> set is called "YAGO classes" and can be downloaded from the DBpedia >>> download page [1]. >> >> OK, thanks. I found 12.627 buildings in the Yago classes file, quite >> nice. > > I just noticed that you don't get all buildings by just grepping for > http://dbpedia.org/class/yago/Building102913152. There are also > various > subclasses of building, which have instances assigned to them. To get > all those you can add "define input:inference > 'http://dbpedia.org/resource/inference/rules/yago#'" (without ") at > the > beginning of your SPARQL query in your previous mail (this enables > Virtuoso subclass inferencing) and then use LIMIT and OFFSET to find > all > solutions in several queries. You'll get 28582 buildings this way. Before I roll my own: Does anybody have a script (e.g. Python?) for these kinds of iterative queries? Beste Grüße, mo ° Moritz Stefaner +49 179 - 525 21 26 http://der-mo.net http://well-formed-data.net ° ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
