sparql Questions
3
Solved
If I have a graph with this kind of structure:
@prefix : <http://example/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/&g...
Fleeta asked 19/6, 2017 at 4:53
4
Solved
I have a SPARQL query like this
PREFIX prefix: <http://example.org/ns#>
SELECT *
WHERE
{
?x rdf:type ?type .
}
Suppose now I want to specify the type of ?type as being either prefix:type...
4
Solved
GREMLIN and SPARQL only define the APIs for graph queries. How do I use the API responses and and plot that as an actual graph, with edges and vertices? Is there something like MySQL Workbenc...
Benevento asked 17/10, 2018 at 5:47
1
I have an ontology in an 'owl' file (nif.owl).
I am familiar with Java, but it kept crashing; therefore, I tried using Python.
However, since I have not used Python before, I am not sure if I am l...
4
Solved
How can I query Wikidata to get all items that have labels contain a word?
I tried this but didn't work; it retrieved nothing.
SELECT ?item ?itemLabel WHERE {
SERVICE wikibase:label {
bd:service...
2
Solved
I have RDF in turtle format in this following
@prefix ab: <http://learningsparql.com/ns/addressbook#> .
@prefix d: <http://learningsparql.com/ns/data#> .
d:i0432 ab:firstName "Richa...
Overstay asked 5/8, 2014 at 4:45
3
I'm using SPARQL and I wonder if I can put an sparql inside in clause?
To be more specific, I need to get entities(s1,s2) who have specific condition for this sparql query[s1's aggregate value over...
Adalie asked 30/11, 2012 at 18:17
2
Solved
Suppose I have some jena query object :
String query = "SELECT * WHERE{ ?s <some_uri> ?o ...etc. }";
Query q = QueryFactory.create(query, Syntax.syntaxARQ);
What would be the best way to g...
Clef asked 4/3, 2013 at 14:28
1
I'm looking for a way to get all the movies on English Wikipedia, with their creation date.
A movie for me is a page with IMDB ID attached to it.
So, this is my query so far:
SELECT DISTINCT ?it...
Yungyunick asked 5/1, 2020 at 11:36
2
Solved
Most SPARQL endpoints have some extensions allowing for full-text search. Can I do full-text searches with the Amazon Neptune SPARQL endpoint?
Fourierism asked 6/8, 2018 at 11:55
2
Solved
I'm playing with the idea of using SPARQL to identify conceptual overlap between things.
Take movies for example (LinkedMDB data), if I have a movie, "The Matrix" and my goal is to list movies tha...
Matchless asked 22/1, 2014 at 17:46
1
Solved
Considering a tree with the root node "A" and "hasChild" relationships (e.g. product structure) as following:
Target is to find out:
What nodes have parents outside of the tree?
In this case th...
Nepenthe asked 17/10, 2019 at 21:33
1
Solved
Trying to execute a query using rdf4j console against a sparql endpoint to find the path between 2 nodes using property wildcards but no luck. The first query gives an error as
Malformed query: N...
Ferrick asked 14/10, 2019 at 21:30
1
Solved
I'm following these instructions to submit a SPARQL query, preferring the POST method as queries may be quite long. But it seems to fail even though the GET works - any way to make a POST query wor...
2
Solved
I know that there are similar questions around on Stackoverflow but I don't feel they answer the following.
Graph Databases to my understanding store data following mostly this schema:
Table/Coll...
Toxoplasmosis asked 11/5, 2015 at 11:3
2
I know the following SPARQL against Wikidata SPARQL Endpoint query is senseless. A similar query is automatically generated from within my application. Please disregard the conceptual soundness, an...
Tillfourd asked 28/4, 2018 at 13:23
5
Solved
If you look at the original Wordnet search and select "Display options: Show Lexical File Info", you'll see an extremely useful classification of words called lexical file. Eg for "filling" we have...
1
Solved
I am using SPARQLWrapper to send SPARQL queries to Wikidata.
At the moment I am trying to find all properties for an entity. Eg. with a simple tuple such as: wd:Q11663 ?a ?b. This in itself works, ...
Audet asked 7/6, 2019 at 1:21
1
Right now I have a query that returns a list of various properties for a specific entity:
SELECT ?propLabel ?val WHERE {
BIND(wd:Q122426 as ?entity)
{
BIND(?entity AS ?valUrl)
BIND("n/a" AS ?...
1
Solved
I have multiple resources like A, B, C.
I want to know these resources exist in my database or not.
Here is a sample of query for one of them:
ASK { <http://fkg.iust.ac.ir/resource/A> ?p ?...
Nystrom asked 14/5, 2019 at 20:16
1
I wanted to add the instance of property to this example query to get only items which are an instance of human.
This is the example query:
SELECT ?entityLabel (YEAR(?date) as ?year)
WHERE
{
BI...
1
Solved
I am trying to build a 6-tuple store on top of wiredtiger. The tuples can be described as follow:
(graph, subject, predicate, object, alive, transaction)
Every tuple stored in the database is un...
Overbear asked 13/3, 2019 at 13:49
2
Solved
What is a good way to check if a SPARQL resource exists?
I'm searching for the equivalent of firing a HTTP GET request to e.g. http://dbpedia.org/resource/Game_of_Thrones and check the HTTP status ...
3
Solved
I'm trying to query DBPedia for a list of properties relating to a given class in the ontology, but since the human-readable "labels" aren't always clear, I'd also like to provide an example from t...
5
Solved
I discovered the SparQL syntax at the Mozilla Festival 12.
The demonstrator was using a proprietary web-based interface and I was wondering if there is open services or maybe (cross-platform) GUI...
Jaella asked 21/1, 2013 at 7:49
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