Hi Ghislain, > estimate the size of the database when using different rules
There seems to be some misunderstanding here. Because of the backward chaining implementation of inference in MarkLogic, inference has no impact on the size of the database. Either I misunderstood and you're trying to do something different, or there is maybe some misunderstanding about the inference model in MarkLogic. Regards, -- Florent Georges H2O Consulting http://h2o.consulting/ On 19 July 2017 at 12:10, Ghislain Atemezing-Pro wrote: > My intention is not to judge the complexity of counting triples, but to > understand (in this case) how a publisher can estimate the size of the > database when using different rules (part of the ontology). So yes, it's a > real use case for the EU Publications Office (PO) to know how complex can > be to use inferences in their dataset. > And yes, I am evaluating Marklogic and 6 other triple stores to recommend > to the PO based on many requirements, one of them is the capacity to do > inference. > > Le mer. 19 juil. 2017 à 12:04, John Snelson <john.snel...@marklogic.com> > a écrit : > >> In my experience people most often want to know how many triples they >> have as some kind of measure of complexity of the system. It isn't a very >> good measure of this complexity, and in MarkLogic it's complex to calculate. >> >> >> John >> >> >> On 19/07/17 10:58, Ghislain Atemezing-Pro wrote: >> >> John, >> Thanks for your answer. >> However, I don't understand this one "Given this, I would suggest >> that this probably isn't a valuable question to answer. Well, I know I >> don't always have "valuable question", I guess there will be a filter of >> such "non valuable question" here to prevent me sending my questions. >> >> But yes, thanks for your time and sincerity. >> >> Ghislain >> >> Le mer. 19 juil. 2017 à 11:47, John Snelson <john.snel...@marklogic.com> >> a écrit : >> >>> On 13/07/17 10:08, Ghislain Atemezing-Pro wrote: >>> > Hi list, >>> > I am trying to combine the function cts:triple-value-statistics with >>> > the predefined rulesets of Marklogic. >>> > I have some 727M triples, with an ontology containing many subclasses >>> > and subproperties. >>> > I've added 4 predefined rules to see whether I can get some inferred >>> > data, such as rdfs-plus-full, subclassOf, sameAs, inverseOf. >>> >>> Don't use rdfs-plus-full or any of the "*-full" rulesets. >>> >>> > When I use the function cts:triple-value-statistics, I can't get the >>> > full number of triples with inferred data. Am I doing something wrong? >>> > Is it possible to get that information somehow? >>> >>> In MarkLogic inference happens at query time (backwards chaining) so we >>> don't have database statistics about total number of inferred triples. >>> >>> You can find this information using the count() aggregate in a SPARQL >>> query. It will probably take a really long time, and may fail to >>> complete if it runs out of scratch space. Given this, I would suggest >>> that this probably isn't a valuable question to answer. >>> >>> John >>> >>> -- >>> John Snelson, Principal Engineer http://twitter.com/jpcs >>> MarkLogic Corporation http://www.marklogic.com >>> _______________________________________________ >>> General mailing list >>> General@developer.marklogic.com >>> Manage your subscription at: >>> http://developer.marklogic.com/mailman/listinfo/general >>> >> -- >> -------------------------------------------- >> Ghislain A. Atemezing, Ph.D >> R&D Engineer SemWeb >> @ Mondeca, Paris, France >> Labs: http://labs.mondeca.com >> Tel: +33 (0)1 4111 3034 <+33%201%2041%2011%2030%2034> >> Web: www.mondeca.com >> Twitter: @gatemezing >> About Me: http://atemezing.org >> >> >> >> _______________________________________________ >> General mailing listgene...@developer.marklogic.com >> Manage your subscription at: >> http://developer.marklogic.com/mailman/listinfo/general >> >> >> -- >> John Snelson, Principal Engineer http://twitter.com/jpcs >> MarkLogic Corporation http://www.marklogic.com >> >> _______________________________________________ >> General mailing list >> General@developer.marklogic.com >> Manage your subscription at: >> http://developer.marklogic.com/mailman/listinfo/general >> > -- > -------------------------------------------- > Ghislain A. Atemezing, Ph.D > R&D Engineer SemWeb > @ Mondeca, Paris, France > Labs: http://labs.mondeca.com > Tel: +33 (0)1 4111 3034 <+33%201%2041%2011%2030%2034> > Web: www.mondeca.com > Twitter: @gatemezing > About Me: http://atemezing.org > > > _______________________________________________ > General mailing list > General@developer.marklogic.com > Manage your subscription at: > http://developer.marklogic.com/mailman/listinfo/general > >
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