sparql Questions
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I just start to learn Semantic Web and have a question about restriction class. I dug a while but haven't found any answer yet.. Any help would be much appreciated!
From text book, I see examples o...
Maw asked 30/11, 2015 at 9:41
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Can I write comments in a query, so that only God but also me remember what I was doing?
I just started learning SPARQL, so forgive my ignorance.
For example:
SELECT ?names
WHERE {
?names dbo:a...
Wealth asked 28/11, 2015 at 21:40
2
I want all the triples in the graph from a specific subject / node.
I can get all the triples...
SELECT $s $p $o WHERE { $s $p $o }
... not really helpful
I can get all the directly connect tr...
Appointee asked 20/10, 2015 at 16:22
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I am working on querying from a RDF dataset of 2.37 GB with approx 17 million triples in it and lucence index of the dataset is also maintained. I tried text queries of jena-text module which searc...
2
I'm trying to get some information from the Lower Layer Super Output Areas (LSOAs) and UK Postcodes datasets.
I need the postal code and lsoa information in a data dump for excel use.
Notation an...
3
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Given a Wikipedia page like Wikipedia: Stack Overflow there are often Infoboxes (mostly on the right hand at the top of the page). Example screenshot:
DBPedia lists all these attributes as RDF ...
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I am trying to lookup information regarding someone on Dbpedia but their name contains parenthesis in this case ending with _(musician) which leads to an error.
SELECT ?birthPlace
WHERE {
dbpedia...
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Is there a good kind of SPARQL query that let's me answer if two given nodes are connected on a single / multiple SPARQL endpoints?
Let's say i want to check if the two nodes
<http://wiktionar...
Illomened asked 18/6, 2015 at 12:59
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we want to model that "something is not there" as opposed to missing information, e.g. an explicit statement that "a patient did not get chemotherapy" or that "a patient does not have dyspnea" is d...
Edrisedrock asked 16/6, 2015 at 20:52
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I have read some resources that talk about temporal and non-temporal queries, specifically with SPARQL. What is the difference between these two kinds of queries?
1
Consider the following extract from the GeoNames database :
@prefix gn: <http://www.geonames.org/ontology#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
<http://sws.ge...
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I am developing an application, which is using triple store (Jena TDB). It is clealy mentioned that TDB Supports SPARQL update and Query. Also, I understood that Fuseki is SPARQL server, that suppo...
Neelon asked 25/5, 2015 at 5:41
2
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Is possible to rename a graph using sparql update?
The only way through that I see is this:
INSERT {GRAPH uri:graphNEW {?s ?p ?o}}
WHERE {GRAPH uri:graphOLD {?s ?p ?o}};
DROP GRAPH uri:graphOLD
...
Hilaire asked 13/5, 2015 at 7:11
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A typical SPARQL query that specifies a graph might look like this:
SELECT ?b ?c WHERE { GRAPH <http://AliceIRI> {
<http://local.virt/foo> ?b ?c}}
This will tell me all the triples i...
1
Solved
Using the following query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#...
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I'm trying to implement a simple triplestore using Django's ORM. I'd like to be able to search for arbitrarily complex triple patterns (e.g. as you would with SparQL).
To do this, I'm attempting ...
Persephone asked 28/7, 2011 at 20:38
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Take this graph:
:thing1 a :Foo ;
:has :A ;
:has :B .
:thing2 a :Foo ;
:has :B ;
:has :A .
:thing3 a :Foo ;
:has :A ;
:has :B ;
:has :C .
I want to select :thing1 and :thing2, but NOT :...
Lombard asked 15/3, 2015 at 19:32
5
Solved
what is the most common tool used for Reading & Writing RDF and Querying with Sparql with different end points .
so far i've found
Jena (jena.net) : it's developed for Java but some people m...
Wofford asked 1/2, 2012 at 3:14
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I want to retrieve with SPARQL the list of the italian cities with more than 100k of population and I'm using the following query:
PREFIX dbo: <http://dbpedia.org/ontology/>
SELECT ?city ?na...
Crepe asked 11/3, 2015 at 14:3
2
We have the following turtle dataset representing a graph where we want to observe some properties.
@prefix v1: <http://localhost:9091/graphe/> .
@prefix v2: <http://localhost:9091/...
Vermiculation asked 6/3, 2015 at 11:19
1
I am trying to write a SPARQL query to return a path from a source to a destination.
Below is the Turtle file representing the data set.
@prefix node: <http://prism.uvsq.fr/>.
@prefix edge: ...
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There is probably an easy to answer to this, but I can't even figure out how to formulate the Google query to find it.
I'm writing SPARQL construct queries against a dataset that includes blank no...
Floozy asked 20/3, 2012 at 1:48
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I would like to know if there is a way in SPARQL to query for partial matches of statements. So if for example in the triple store I have an object containing "blablablaUsefulblablabla" I would lik...
Chlori asked 20/2, 2015 at 11:34
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I want to get all classes of my ontology. This is a part of my ontology file in RDF/XML format created by Protege:
<!-- http://www.w3.org/2002/07/owl#aqua -->
<Class rdf:about="&owl;...
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I mostly use SPARQL SELECT while working on a query for debugging purposes but in the end I want to use the final result it in a CONSTRUCT way; as I want to work with a graph and not key/value quer...
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