rdflib

I can include URIs and variables in my queries, but I can't include literals in my queries. Here, I have some code which successfully reads an RDF file, finds all the RDF triples with skos:prefLabels, counts them, and then identifies a couple of specific ones from a set of keywords: import rdflib.plugins.sparql as sparql import rdflib import rdflib.graph as g graph = g.Graph() # Read the RDF file graph.parse( 'h:\......SKOSTaxonomy.rdf', format='xml') # Build and execute the query q = sparql.prepareQuery('SELECT ?s ?p ?o WHERE { ?s ?p ?o .}') p = rdflib.URIRef("http://www.w3.org/2004/02/skos

I'm trying to parse several big graphs with RDFLib 3.0, apparently it handles first one and dies on the second (MemoryError)... looks like MySQL is not supported as store anymore, can you please suggest a way to somehow parse those? Traceback (most recent call last): File "names.py", line 152, in <module> main() File "names.py", line 91, in main locals()[graphname].parse(filename, format="nt") File "/usr/local/lib/python2.6/dist-packages/rdflib-3.0.0-py2.6.egg/rdflib/graph.py", line 938, in parse location=location, file=file, data=data, **args) File "/usr/local/lib/python2.6/dist-packages

I'm trying to query remote endpoints and get get owl:sameAs mappings, I've tried both RDFLib and Redland but neither worked for me, probably I'm not dealing with namespaces correctly. Here is my attempt in RDFLib: import rdflib rdflib.plugin.register('sparql', rdflib.query.Processor, 'rdfextras.sparql.processor', 'Processor') rdflib.plugin.register('sparql', rdflib.query.Result, 'rdfextras.sparql.query', 'SPARQLQueryResult') g = rdflib.Graph() query = """ SELECT * FROM <http://api.talis.com/stores/bbc-backstage/services/sparql> WHERE { ?s a http://purl.org/ontology/mo/MusicArtist; http://www

I want to check for the hypernyms/hyponym relation between two words (given by the user) which means any of them can be hypernym of other or it can also be the case that there is no hypernym relation between the two.Can I use path_similarity for the same.I am trying to do like this.If you can suggest any better method for that.I also want to know if it is better to check the same from a sparql query first=wn.synset('automobile.n.01') second=wn.synset('car.n.01') first.path_similarity(second) alvas Firstly, there is a difference between word and synset / concept in wordnet. Here we see that one

In a Python script using RDFLib 3.0 , I get the following XML-Output when serializing my triples: <rdf:RDF xmlns:_3="http://www.my-example.intra/ontologies/ci.owl#" > How can I define specific namespace prefixes for those anonymous _x-prefixes automatically assigned by RDFLib (or it's XML-Serializer respectively)? <rdf:RDF xmlns:ex="http://www.my-example.intra/ontologies/ci.owl#" > Many thanks in advance for your responses! I eventually found a solution to this by looking at some (quite messily distributed) rdflib doc files. For the (Conjunctive)Graph storing the triples, call mygraph.bind