On 13/12/10 16:16, Benson Margulies wrote: > Meanwhile, is there any advantage of reading the ontology tuples > themselves into memory instead of into TDB? Yes, for sure, if you're using the inference engine. The reasoners make many, many checks into the model of the form "is triple <t> present/absent?". If that check goes to TDB, at best you're hitting the cache but at worst you'll be doing a disk operation. For a small model, if I understand it correctly, TDB will have everything cached. But for a larger model, you will likely pay a performance** penalty.
Ian ** http://www.reddit.com/r/programming/comments/90tge/hey_rprogramming_i_made_a_visualization_of_the/c0b1t0v -- ____________________________________________________________ Ian Dickinson Epimorphics Ltd, Bristol, UK mailto:[email protected] http://www.epimorphics.com cell: +44-7786-850536 landline: +44-1275-399069 ------------------------------------------------------------ Epimorphics Ltd. is a limited company registered in England (no. 7016688). Registered address: Court Lodge, 105 High St, Portishead, Bristol BS20 6PT, UK
