[Virtuoso-users] Load LGD to Amazon EC2 instance

2010-04-16 Thread Alexander Sidorov
Hello! I'm trying to load LGD Elements dataset to my EC2 instance but as result get the following error at logs: 02:46:41 PL LOG: File /opt/lgdelements/global.graph error 37000 SP029: TURTLE RDF loader, line 1: Undefined namespace prefix at http://linkedgeodata.org# 02:46:41 PL LOG: File

Re: [Virtuoso-users] Load LGD to Amazon EC2 instance

2010-04-16 Thread Alexander Sidorov
Hi Hugh, Thank you for feedback. I am decompressing the dataset right now... But I didn't understand why I should compress the dataset again (using gzip) if I can load uncompressed .nt file. Regards, Alexander 2010/4/16 Hugh Williams hwilli...@openlinksw.com Hi Alexander, The Virtuoso Bulk

Re: [Virtuoso-users] Load LGD to Amazon EC2 instance

2010-04-16 Thread Hugh Williams
Hi Alexander, If you prefer to leave them uncompressed then fine, change the reference in the ld_dir () procedure to *.nt in that case. The gz recommendation was more to save space on the machine ... BTW, their is rogue i character on the end of the graph name in the ld_dir command below I

[Virtuoso-users] Custom reasoner for Virtuoso

2010-04-16 Thread Aleksandr A. Zaripov
Hello Is it possible to use some other reasoner (or add custom rules) for the Virtuoso RDF store (for querying on-the-fly)? Or the single way is to take all triples to separate reasoner, make inference and put it back to the storage? Thanks, Alexander Zaripov zari...@tpu.ru

Re: [Virtuoso-users] Custom reasoner for Virtuoso

2010-04-16 Thread Ivan Mikhailov
Hello Alexandr, Select everything + reasoning + write back is the only cheap way. External dynamic reasoning is possible in theory but very costly, because it means extensions on SQL optimizer and run time or at least significant changes in SPARQL front-end compiler in order to replace basic