| curl --silent -H 'Accept: text/csv' 'http://localhost:3000/sparql.anything' \ | |
| --data-urlencode 'query= | |
| PREFIX xyz: <http://sparql.xyz/facade-x/data/> | |
| PREFIX ns: <http://sparql.xyz/facade-x/ns/> | |
| PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> | |
| prefix xhtml: <http://www.w3.org/1999/xhtml#> | |
| PREFIX fx: <http://sparql.xyz/facade-x/ns/> | |
| prefix skos: <http://www.w3.org/2004/02/skos/core#> | |
| PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> | |
| PREFIX fn: <java:datething.core.proxy$org.apache.jena.sparql.function.> |
| # this approach from the book favors making properties for each kind of participation | |
| _:event1 a ex:Conference; | |
| dc:title "Lego Hack Day"; | |
| ex:organizer ex:mary; | |
| ex:attendee ex:bob; | |
| ex:sponsor ex:legoinc; | |
| ex:location ex:conferenceCentre. |
| # paper https://biblio.ugent.be/publication/8724424/file/8724427 | |
| "However, no mapping language supports the generation of RDF-star graphs so far." | |
| Apache Jena SPARQL-star constructs do: https://jena.apache.org/documentation/rdf-star/. | |
| You can generate RDF-star graphs with SPARQL-star construct statements. SPARQL/SPARQL-star construct statements | |
| *are* mappings from graphs to graphs. If you can express mappings with SPARQL/SPARQL-star that seems like it passes | |
| the test for being a mapping language. |
| root@parens:/mnt# cat project.clj | |
| (defproject nltk-work "0.1.0-SNAPSHOT" | |
| :description "FIXME: write description" | |
| :url "http://example.com/FIXME" | |
| :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0" | |
| :url "https://www.eclipse.org/legal/epl-2.0/"} | |
| :dependencies [[clj-python/libpython-clj "2.003"] | |
| [org.clojure/clojure "1.10.0"]] | |
| :repl-options {:init-ns nltk-work.core}) |
| the goal | |
| (https://twitter.com/yamalight/status/1488183981887696903?s=20&t=Ku7RU7QTOoMTm5Ojxb9FUA) | |
| is to start with 1_input.ttl and arrive at 2_desired_output.json. | |
| first, we transform 1_input.ttl with a sparql construct query: 3_query.rq. | |
| then we take the output of that construct query (4_after_construct.ttl) and | |
| apply this (5_frame.json) jsonld frame against it. | |
| NOTE: you can use https://json-ld.org/playground/1.0/ to apply the jsonld | |
| frame but i used apache jena's org.apache.jena.riot.writer.JsonLDWriter. |
The goal is simple: infer class membership (using rdfs:subClassOf and rdf:type predicates). Don't do it with a property path or something. You must let the reasoner do it.
I've tried to do this with a few reasoners. All unsuccessful.
justin@parens:~/repos/mine/forks/new/sparql.anything$ cat a.txt
next
qtp90045638-25[1] read /app/a.txt
*** Reading commands from /app/a.txt
Does anyone know the name of the artist that designed the ship in the bottle used on the cafe's logo?
| # https://twitter.com/quoll/status/1556831573370175489?s=20&t=R5BxG0YCqncmHW_AG7cBeg | |
| # "If something is an instance of *every* class described in an owl:intersectionOf then | |
| # it can be inferred to be an instance of the intersection." | |
| # | |
| # this query doesn't handle chaining of this rule (you'd have to just run it, insert the triples, then continue until | |
| # no more results) | |
| # | |
| # also i used a construct so the results can be seen | |
| PREFIX : <http://example.com/> |
Apache Jena's OWL reasoner imports tbox.ttl and abox.ttl then derives jena_output_subset.ttl as expected.
RDFox won't import tbox.ttl and produce derivations. But it looks like OWL 2 RL recognizes:
Which are used in tbox.ttl. From the docs it looks like RDFox supports OWL 2 RL.