rdf Questions
4
Solved
Could anybody be so kind to give me a simple example of reification in RDF? I want to see if I understood it correctly.
For example, I propose the following case
Tolkien -> wrote -> Lord of...
Courante asked 21/8, 2009 at 15:42
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...
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...
1
I'd like to see (SWI)Prolog advertised as a NoSQL 'serious contender'.
(SWI)Prolog has awesome data bindings features, and lot of power - of course - to write logic against such big data.
With re...
Impi asked 31/10, 2015 at 17:36
4
Solved
Given a choice between OWL Property Restrictions and SHACL, is there any reason to choose the OWL approach any more?
Particularly with respect to cardinality constraints, I'm wondering whether SHA...
Crazyweed asked 26/6, 2017 at 19:23
6
Solved
I'm thinking about using semantic (web) technologies like RDF and OWL in an application on mobile devices. Currently I'm targeting android, but I'd also be interested in the possibilities on the iP...
2
Solved
I wanted to model partner relationship like the following, which I expressed in the format of labeled property graph.
I wanted to use RDF language to express the above graph, particularly I want...
Gereld asked 28/4, 2019 at 0:11
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
0
Can NetworkX library read RDF data in Ntriple format and build a Graph object along with attributes or node features.
I tried the below code to convert the RDF data(.nt file) in to Graph using the ...
6
I've been reading about Semantic Web technologies such as RDF/RDFS and "ontology", but was wondering how each of these are related? At the moment the terms all seem interchangeable, or I'm not unde...
Motorcycle asked 18/3, 2012 at 0:54
1
Solved
In RDF 1.1 XML Syntax documentation rdf:resource is used as a shortened form when defining Empty Property Elements:
When a predicate arc in an RDF graph points to an object node which has no fur...
Trysail asked 7/7, 2019 at 17:7
2
Solved
Throughout the RDF specs an EBNF-NOTATION XML specification is used to specify the grammar of a document. So I am wondering how to use Antlr/bison/yacc (maybe with some flag within these tools I do...
12
I am trying to grasp the concept of Semantic Web. I am finding it hard to understand what exactly is the difference between RDF and OWL. Is OWL an extension of RDF or these two are totally di...
Zingale asked 16/11, 2009 at 6:1
2
Solved
I do think I understand the meaning of these words in programming languages, but it is not clear in regards to RDF and triples. Is there an example that will help me to understand?
Thank you
Conversable asked 15/4, 2011 at 0:33
14
In layman's terms, what's a RDF triple?
Padraic asked 7/11, 2008 at 19:4
1
Solved
I am trying to create large RDF/HDT files, which in turn means reading large files into memory, etc. Now, that is not really an issue since the server has 516GB of memory, around 510GB of which are...
Acceptation asked 24/11, 2018 at 20:36
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
1
It seems like they are the same?
https://schema.org/author
The author of this content or rating. Please note that author is special in that HTML 5 provides a special mechanism for indicating au...
Metralgia asked 2/7, 2018 at 16:3
2
Solved
I am using MarkLogic 8.0-6.3
While generating triples from an RDF file using sem:rdf-load few of the triples are not created.
I have pasted the RDF file content, generated triples and the query w...
3
Solved
I'm doing a lot of research right now on Semantic Web and complex data models that represent relationships between individuals and organizations.
I knew a little semantic ontologies although I neve...
Bradeord asked 27/4, 2018 at 13:12
1
I'm working on a semantic web library for clojure and I wanted to check if data.xml returns XML namespaces for the document being parsed, so I threw together a quick program that parsed this RDF do...
4
I need to store RDF triples, while keeping track of modifications. Is there anything out there for this service? Alternatively, how would you keep track of revision while using a context-aware trip...
Halford asked 22/1, 2010 at 10:29
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