Hi Sareh, > > Is there any default limitation in sparql queries from dbpedia > endpoint?(http://dbpedia.org/sparql) > I think the maximum of triples that can be fetched is 2000 triples > for every query, how can I omit this limitation? > I'll be so pleased for your helping
The http://dbpedia.org/sparql endpoint has both rate limiting on the number of connections/sec you can make, as well as restrictions on resultset and query time, as per the following settings: [SPARQL] ResultSetMaxRows = 2000 MaxQueryExecutionTime = 120 MaxQueryCostEstimationTime = 1500 These are in place to make sure that everyone has a equal chance to de- reference data from dbpedia.org, as well as to guard against badly written queries/robots. The following options are at your disposal to get round these limitations: 1. Use the LIMIT and OFFSET keywords You can tell a SPARQL query to return a partial result set and how many records to skip e.g.: select ?s where { ?s a ?o } LIMIT 1000 OFFSET 2000 2. Setup a dbpedia database in your own network The dbpedia project provides full datasets, so you can setup your own installation on a sufficiently powerful box using Virtuoso Open Source Edition. 3. Setup a preconfigured installation of Virtuoso + database using Amazon EC2 (not free) See: http://www.openlinksw.com/dataspace/dav/wiki/Main/VirtAWSDBpedia351C Please let me know if you have any questions on this or any other dbpedia sparql endpoint issue. Best regards, Patrick ---- OpenLink Software ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense.. http://p.sf.net/sfu/splunk-d2d-c1 _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
