Re: Trying to count the properties used for each class

2022-01-24 Thread Nicola Vitucci
Hey Bob, does this one do what you're after? SELECT DISTINCT ?cl (COUNT(DISTINCT ?p) AS ?c) WHERE { ?s a ?cl . ?s ?p ?o . } GROUP BY ?cl Nicola Il giorno lun 24 gen 2022 alle ore 23:05 Bob DuCharme ha scritto: > Using arq and the data at >

Re: Trying to count the properties used for each class

2022-01-24 Thread Martynas Jusevičius
You're counting the same thing you're grouping by. I think you need: SELECT ?c (COUNT(DISTINCT ?p) AS ?pcount) WHERE { ?s a ?c . ?s ?p ?o . } GROUP BY ?c

Trying to count the properties used for each class

2022-01-24 Thread Bob DuCharme
Using arq and the data at http://www.snee.com/bobdc.blog/files/BeatlesMusicians.ttl, I’m trying to write a query that will list the classes used in the data and the number of distinct properties used by instances of that class. I’m having a hard time and can’t even write a query that lists the

Mapping multiple files into the same namespace

2022-01-24 Thread Martynas Jusevičius
Hi, I want to merge multiple RDF files into a single ontology under one namespace URI. E.g. to add custom assertions to ontologies without touching their original files. Can LocationMapper/FileManager be made/extended to do this, or do I need to roll something of my own? Martynas atomgraph.com

Re: Dynamically restricting graph access at SPARQL query time

2022-01-24 Thread Martynas Jusevičius
You're more than welcome :) On Mon, Jan 24, 2022 at 3:41 PM Vilnis Termanis wrote: > > Hi Martynas, > > Thank you very much for the suggestion (and additional information > out-of-band). > I've been having a look at LinkedDataHub and will come back to you > with some questions, if you don't

Re: Dynamically restricting graph access at SPARQL query time

2022-01-24 Thread Vilnis Termanis
Hi Andy, Hope you're well - nice to hear from you. (responses inline) On Sat, 22 Jan 2022 at 13:57, Andy Seaborne wrote: > > > > On 21/01/2022 15:26, Martynas Jusevičius wrote: > > WebAccessControl ontology might be relevant here: > > https://www.w3.org/wiki/WebAccessControl > > We're using a

Re: Dynamically restricting graph access at SPARQL query time

2022-01-24 Thread Vilnis Termanis
Hi Martynas, Thank you very much for the suggestion (and additional information out-of-band). I've been having a look at LinkedDataHub and will come back to you with some questions, if you don't mind. Regards, Vilnis On Fri, 21 Jan 2022 at 15:26, Martynas Jusevičius wrote: > > WebAccessControl