Hi Taha, I would like to take a look at the files. However, the list filters out all attachments so i got your message with no attachments. Could you put the files somewhere and send us link so the files can be downloaded from the link.
Thanks, Dr Milorad Tosic >________________________________ > From: "Osman, Taha" <[email protected]> >To: "[email protected]" <[email protected]> >Sent: Saturday, February 25, 2012 5:11 AM >Subject: UOBM dataset > >Hi, > >We have been performing some benchmarking experiments on the UOBM dataset >expanding on our previously published paper in ESWC 2010 (attached). The >response times of Oracle and Owlim is somewhat consistent, but we were >surprised that Jena TDB's (0.8.10) response time was extremely slow in >general and did not return any results (Java runs out of heap space) for >all the UOBM queries even while using the least expressive RDFS reasoning. >Can you shed light on the matter? > >Here is how we load the dataset (TBox file(s) are loaded first): > >jenaModel = TDBFactory.createModel(rootDirPath + repositryName); >InputStream in = FileManager.get().open(dataFile.getCanonicalPath()); >... >jenaWatch.start(); >jenaModel.read(in, baseURI,formatType); >jenaWatch.stop(); > >and here is how we fire the queries: > >Model jenaModel = TDBFactory.createModel(rootDirPath + repoName); >InfModel jenaInfModel = ModelFactory.createRDFSModel(jenaModel); >... >jenaWatch.start(); >iquery = QueryExecutionFactory.create(query,jenaInfModel); >ResultSet iresult = iquery.execSelect(); >while(iresult.hasNext()) { > QuerySolution soln = iresult.nextSolution() ; >} >jenaWatch.stop(); > >We have also tried loading the TDB with the ABox only, then binding the >selected reasoner with the TBox schema (>> reasoner.bindSchema(schema)). > >Attached: our ESWC paper, UOBM queries+TBox, Response times (TDB failed to >execute any of the queries). > >Best regards >Taha >-- >Dr Taha Osman >Computing and Informatics Building >School of Science and Technology >Nottingham Trent University >Clifton Campus >Nottingham NG11 8NS > >Tel: +44 (0)115 848 8370 >Fax: +44(0)115 848 8429 > >DISCLAIMER: >This email is intended solely for the addressee. It may contain private >and confidential information. If you are not the intended addressee, >please take no action based on it nor show a copy to anyone. In this case, >please reply to this email to highlight the error. Opinions and >information in this email that do not relate to the official business of >Nottingham Trent University shall be understood as neither given nor >endorsed by the University. Nottingham Trent University has taken steps to >ensure that this email and any attachments are virus-free, but we do >advise that the recipient should check that the email and its attachments >are actually virus free. This is in keeping with good computing practice. > > > >DISCLAIMER: This email is intended solely for the addressee. It may contain >private and confidential information. If you are not the intended addressee, >please take no action based on it nor show a copy to anyone. In this case, >please reply to this email to highlight the error. Opinions and information in >this email that do not relate to the official business of Nottingham Trent >University shall be understood as neither given nor endorsed by the >University. Nottingham Trent University has taken steps to ensure that this >email and any attachments are virus-free, but we do advise that the recipient >should check that the email and its attachments are actually virus free. This >is in keeping with good computing practice. > > >
