graphdb

来源： https://stackoverflow.com/questions/53377236/setting-up-an-openrefine-reconciliation-endpoint-over-graphdb

问题 I'm trying to run this query in the SPARQL playground on GraphDB . select * where { ?s content:value ?value . FILTER REGEX(str(?value), "_:x1697BD364N0abcdd866d54") } ?value are BNodes I'm trying to filter all values where the BNode ID is: _:x1697BD364N0abcdd866d54 I've tried a few different ways to filter by the ID: FILTER REGEX(str(?value), "#bnode-id") FILTER (?value), "#bnode-id") but none was a success. Questions: How would you filter based on a bnode id? Is it possible to STR(bnode) ?

问题 I'm trying to run this query in the SPARQL playground on GraphDB . select * where { ?s content:value ?value . FILTER REGEX(str(?value), "_:x1697BD364N0abcdd866d54") } ?value are BNodes I'm trying to filter all values where the BNode ID is: _:x1697BD364N0abcdd866d54 I've tried a few different ways to filter by the ID: FILTER REGEX(str(?value), "#bnode-id") FILTER (?value), "#bnode-id") but none was a success. Questions: How would you filter based on a bnode id? Is it possible to STR(bnode) ?

问题 I'm trying to run this query in the SPARQL playground on GraphDB . select * where { ?s content:value ?value . FILTER REGEX(str(?value), "_:x1697BD364N0abcdd866d54") } ?value are BNodes I'm trying to filter all values where the BNode ID is: _:x1697BD364N0abcdd866d54 I've tried a few different ways to filter by the ID: FILTER REGEX(str(?value), "#bnode-id") FILTER (?value), "#bnode-id") but none was a success. Questions: How would you filter based on a bnode id? Is it possible to STR(bnode) ?

问题 I'm trying to run this query in the SPARQL playground on GraphDB . select * where { ?s content:value ?value . FILTER REGEX(str(?value), "_:x1697BD364N0abcdd866d54") } ?value are BNodes I'm trying to filter all values where the BNode ID is: _:x1697BD364N0abcdd866d54 I've tried a few different ways to filter by the ID: FILTER REGEX(str(?value), "#bnode-id") FILTER (?value), "#bnode-id") but none was a success. Questions: How would you filter based on a bnode id? Is it possible to STR(bnode) ?

问题 I've been trying to get SPARQLWrapper to insert a simple triple into GraphDB with no success. I have no trouble with select queries. Here's Python test code that fails: db = sparqlw.SPARQLWrapper(endpoint) query = ''' INSERT {<http://example.com/123456789876> a owl:Thing .} WHERE {} ''' db.setQuery(query) db.method = sparqlw.POST db.setReturnFormat(sparqlw.JSON) db.queryType= sparqlw.INSERT result = db.query() It returns these errors: "urllib.error.HTTPError: HTTP Error 400: Bad Request" and

问题 I am trying to understand the semantics of rdfs domain and range. Because I am from an object oriented background, I am struggling to understand the semantics and how to validate data against the rdfs statements. Here is a sample file in turtle format: PREFIX owl: <http://www.w3.org/2002/07/owl#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> prefix tmpl: <http://template.example.com/> prefix data: <http://data.example.com/> tmpl

问题 I'm trying to install Ontotext GraphDB free on a debian jessie server. I've downloaded graphdb-free-8-1-1.deb file but when I'm typing the command sudo deb -i graphdb-free-8-1-1.deb as suggested in the quick start guide (http://graphdb.ontotext.com/documentation/free/quick-start-guide.html), I get the following message : sudo: deb: command not found It's seems that it has something to do with the /etc/sources.list file. Do I have to insert a line in this file ? how ? Thanks for your help. 回答1

问题 I got advice from the previous question and modified the source. However, the source still does not work properly. I am using GraphDB(RuleSet: OWL2-RL) and SPARQL. I have an ontology with Person and Animal_Lover classes. People are Animal_Lover if they have more than 2 pet. How can I do this in my ontology? <?xml version="1.0"?> <rdf:RDF xmlns="http://www.example.com/test" xmlns:test="http://www.example.com/test#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:owl="http://www

问题 I recently asked a question about the feasibility of loading about 10 million statements into a triplestore with OWL reasoning enabled. That has lead to some StackOverflow comments as well as discussion within my research group about whether or not we really need OWL reasoning. I'll start with a real-world query that doesn't seem to require OWL reasoning. "41167-4120-0" is the NDC Code that identifies the commercial drug product "Fexofenadine hydrochloride 180 MG Oral Tablet [Allegra]" in the