Hi Hugh, you can pick up and use this file:
https://tools.wmflabs.org/wikidata-exports/rdf/exports/20150126/wikidata-taxonomy.nt.gz Nicola Il 07/04/2015 01:44, Hugh Williams ha scritto: > HI Nicola, > > Are you able to provide a test case we can setup locally to demonstrate > this issue ? > > Best Regards > Hugh Williams > Professional Services > OpenLink Software, Inc. // http://www.openlinksw.com/ > Weblog -- http://www.openlinksw.com/blogs/ > LinkedIn -- http://www.linkedin.com/company/openlink-software/ > Twitter -- http://twitter.com/OpenLink > Google+ -- http://plus.google.com/100570109519069333827/ > Facebook -- http://www.facebook.com/OpenLinkSoftware > Universal Data Access, Integration, and Management Technology Providers > >> On 4 Apr 2015, at 19:49, Nicola Vitucci <nicola.vitu...@gmail.com >> <mailto:nicola.vitu...@gmail.com>> wrote: >> >> Hi all, >> >> I think that SPARQL queries using property paths which include the plus >> sign yield incorrect results. This is what I get with the following >> queries (number of results between brackets): >> >> SELECT DISTINCT ?scl WHERE {wd:Q3336843 rdfs:subClassOf* ?scl} (25 rows) >> SELECT DISTINCT ?scl WHERE {wd:Q3336843 rdfs:subClassOf+ ?scl} (4 rows) >> >> SELECT DISTINCT ?scl WHERE {wd:Q3336843 rdfs:subClassOf{1,} ?scl} (24 >> rows) >> SELECT DISTINCT ?scl WHERE {wd:Q3336843 rdfs:subClassOf{2,} ?scl} (20 >> rows) >> SELECT DISTINCT ?scl WHERE {wd:Q3336843 rdfs:subClassOf{3,} ?scl} (17 >> rows) >> ... >> >> This is the output of EXPLAIN on the first and second queries (the >> latter 3 have apparently the same plan as the first one): >> >> ---------------------------- >> { >> >> Precode: >> 0: __all_eq := Call __all_eq ( #/Q3336843 ) >> 5: BReturn 0 >> Transitive dt dir 1, input: (__all_eq) >> input shadow: (ZÁ^D) >> output: (_::trans_obj_1_1) >> { >> RDF_QUAD 1.8 rows(s_1_4_t0.S, s_1_4_t0.O) >> inlined P = ##subClassOf , S = k_ZÁ^D >> >> After code: >> 0: _::trans_subj_1_0 := := artm s_1_4_t0.S >> 4: _::trans_obj_1_1 := := artm s_1_4_t0.O >> 8: BReturn 0 >> Subquery Select(_::trans_subj_1_0, _::trans_obj_1_1) >> } >> Distinct (_::trans_obj_1_1) >> >> After code: >> 0: scl := := artm _::trans_obj_1_1 >> 4: BReturn 0 >> Subquery Select(scl) >> >> After code: >> 0: scl := Call __ro2sq (scl) >> 5: BReturn 0 >> Select (scl) >> } >> ---------------------------- >> >> ---------------------------- >> { >> RDF_QUAD 8 rows(s_1_2_t0.O) >> inlined P = ##subClassOf , S = #/Q3336843 >> Distinct (s_1_2_t0.O) >> >> After code: >> 0: scl := := artm s_1_2_t0.O >> 4: BReturn 0 >> Subquery Select(scl) >> >> After code: >> 0: scl := Call __ro2sq (scl) >> 5: BReturn 0 >> Select (scl) >> } >> ---------------------------- >> >> Have you already encountered this issue? I'm using build >> f609f14aa6bdb8ef29d4da038fdb7934c6ca65d7. >> >> Thanks, >> >> Nicola >> >> ------------------------------------------------------------------------------ >> Dive into the World of Parallel Programming The Go Parallel Website, >> sponsored >> by Intel and developed in partnership with Slashdot Media, is your hub >> for all >> things parallel software development, from weekly thought leadership >> blogs to >> news, videos, case studies, tutorials and more. Take a look and join the >> conversation now. http://goparallel.sourceforge.net/ >> _______________________________________________ >> Virtuoso-users mailing list >> Virtuoso-users@lists.sourceforge.net >> <mailto:Virtuoso-users@lists.sourceforge.net> >> https://lists.sourceforge.net/lists/listinfo/virtuoso-users > ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ Virtuoso-users mailing list Virtuoso-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtuoso-users
