Recent questions tagged rdf

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rdf - Equal relationship between ontology properties

I have 2 properties, e.g. 'hasColor' and 'hasFinish'. I want to express with ontology that in case of ... . But is it right approach? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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483 views

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rdf - How to extract Freebase Data Dump for a particular topic

I want to extract music data from the freebase data dumps. (http://www.freebase.com/music) Once I have the ... should I go about extracting it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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491 views

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rdf - Sparql - Applying limiting criteria to predicates

I'm fairly new to RDF / Sparql, so apologies for any incorrect terminology, and also for the fairly terrible ... the query to exclude Alan? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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434 views

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rdf - Get all nodes in a transitive relation

Is it somehow possible to get the list of nodes connected through a transitive relation with SPARQL? I have ... solution for my first problem. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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533 views

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rdf - Extract all types and their labels in English from DBPedia

I'm trying to get all types from DBpedia using this SPARQL query: select ?type { ?type a owl:Class . } Now, I ... do I need to add to my query? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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587 views

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rdf - Work around to query DBpedia for two keywords

I want to query DBpedia for multiple keywords, apparently I have to search for an exact substring, so if I want ... : http://dbpedia.org/sparql See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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470 views

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rdf - Defining Protege class with expression of numerical data

I am building a smart home ontology. I now have a class hierarchy like that: I want to give definitions ... this definition? Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rdf - Using SPARQL to locate a subject with multiple occurrences of same property

I am trying to use SPARQL to return triples where the same subject has multiple objects for the same property, ... am I using them correctly? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rdf - Paginating SPARQL results

Suppose I have the following SPARQL query: SELECT DISTINCT ?result ?label WHERE { ?result a database:Column . ... for visualizing the results. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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409 views

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rdf - Why there is differences in the number of links connected to the same property?

I have noticed that there are a different number of triples using the same property (e.g., isbn) about ... suitable for good information gain. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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299 views

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rdf - Inferencing in protege

I have a simple ontology as follows <?xml version="1.0"?> <!DOCTYPE rdf:RDF [ <!ENTITY owl "http://www. ... I keep getting that John is a person See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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415 views

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rdf - How to Define My Own Ranges for OWL DataProperties

I have recently started learning Web Ontology Language (OWL). I want to define a DataProperty with my own ... own ranges for data properties. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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673 views

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rdf - How to create an ontology from raw data (CSV)?

I am modelling university data using an OWL ontology with relevant classes, object properties, etc. I have the ... be done using using Jena? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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611 views

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rdf - What is the SPARQL query to get the name of all graphs existing in my triplestore?

I want to get the name of all existing graphs in my Fuseki server, it should return a message with a list of all graphs name. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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459 views

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rdf - What is the SPARQL query to get the name of all graphs existing in my triplestore?

I want to get the name of all existing graphs in my Fuseki server, it should return a message with a list of all graphs name. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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554 views

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rdf - Retrieving a DBpedia resource by its string name with SPARQL

I am trying to get the resource describing country Romania by the country name with this query: PREFIX foaf: <http ... :name ?x } SPARQL results See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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425 views

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rdf - LinkedMDB SPARQL Query

I'm a bit confused here. I have the following SPARQL query that works brilliantly against the LinkedMDB explorer. ... to retrieve more movies? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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431 views

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rdf - Parsing schema.org ttl/owl file using Jena

I'm writing a code generator that generate entities (POJO's in Java language) from the schema defined here ... interface to parse the schema? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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487 views

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rdf - Download Wikidata single entity - truthy

I would like to download Wikidata for a single entity. I know I can achieve using the URL, for example: ... are available in truthy format). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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554 views

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rdf - SPARQL query language tag weirdness

This works: SELECT * WHERE{ ?x rdfs:label "Chalti Ka Naam Gaadi"@en . ?x foaf:name ?z . } (Results ... (Results on DBpedia SPARQL Explorer) Why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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357 views

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rdf - How to describe resources with dcterms or other schemas?

I'm trying to describe some resources about books, already did: Author: dcterms:creator; Title: dcterms:title; ... Eg. Homepage; keywords; goal See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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503 views

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rdf - Querying a Graph path in SPARQL

I am trying to write a SPARQL query to return a path from a source to a destination. Below is the Turtle ... advance for your help. Best Regards See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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341 views

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rdf - SWRL rules don't infer new Object and Data Property Assertions

I have created this ontology which contains two classes: Blood-Sugar and Services. Blood-Sugar has two data properties: ... ;string">High</swrl:argument2> <swrl:argument1> <rdf:...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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475 views

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rdf - Retrieving dbpedia-owl:type value of resource with dbpedia-owl:wikiPageRedirect value?

Visitng http://dbpedia.org/resource/Cupertino shows the DBpedia RDF information about Cupertino. As you can see, ... dbpedia-owl:type property? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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762 views

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rdf - SPARQL Query: How I get only a literal or string as result?

Data: <untitled-ontology-5:OperationName rdf:datatype="http://www.w3.org/2001/XMLSchema#string"> Adhesive ... Proper Result: Adhesive Curing See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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638 views

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rdf - SPARQL functions in CONSTRUCT/WHERE

I mostly use SPARQL SELECT while working on a query for debugging purposes but in the end I want to use the ... it out at my SPARQL Endpoint See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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585 views

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rdf - finding common superclass and length of path in class hierarchies

I have two classes, A and B, from DBpedia. How can I calculate the distance (number of edges) from each ... can I find this common superclass? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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697 views

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rdf - Sparql query Subclass or EquivalentTo

I want to query all subclass of Nicotine (product). the result must be (Nasal form nicotine, Oropharyngeal from ni ... me some of idea. Thank See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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