Recent questions tagged sparql

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sparql - Check if an underlying representation is OWL or RDFS

Imagine you are querying a data source via an SPARQL endpoint and you want to know if the underlying representation ... access to 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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sparql - How to create a parameterised query in SPARQLWrapper in python

I am using the following sparql query using SPARQLWrapper as follows. from SPARQLWrapper import SPARQLWrapper, JSON ... details if needed. See Question&Answers more detail:os...

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

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sparql - How to resolve the execution limits in Linkedmdb

I was trying to extract all movies from Linkedmdb. I used OFFSET to make sure I wont hit the maximum number of ... use a loop of some sort)? See Question&Answers more detail:os...

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

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sparql - Getting hyperlinks of a Wikipedia page using DBpedia

I have two resources in DBPedia: dbr:Diabetes_mellitus and dbr:Hyperglycemia. In Wikipedia, the corresponding pages are ... I can achieve 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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328 views

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sparql - RDF list subjects with their objects in a single line

I have an RDF file and I need to extract some information from it and write it to a file. I understood how ... and child2 How can this be done? See Question&Answers more detail:os...

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

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535 views

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sparql - How do I construct get the whole sub graph from a given resource in RDF Graph?

If this is the RDF graph , given the resource A , I need to construct all the triples connected to A till the end . here ... :d :D1, :S2 :d :D2, See Question&Answers more detail:os...

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

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339 views

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sparql - To use iSPARQL to compare values using similarity measures

I have a question for you. I would like to write a query that retrieves the values ??that are similar ... to perform the same operations? See Question&Answers more detail:os...

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

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1.1k views

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sparql - Get all properties for a DBpedia class

How to get a list of properties for a specific class? Consider the class dbpedia-owl:Person. All instances of ... instance of the Person class? See Question&Answers more detail:os...

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

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519 views

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sparql - How to query Wikidata items using its labels?

How can I query Wikidata to get all items that have labels contain a word? I tried this but didn't work; it ... ), "keyword")) } LIMIT 1000 See Question&Answers more detail:os...

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

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305 views

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sparql - obtain the matrix in protege

My work is about library book of recommendation systems . that as input I need book Classification ontology . in ... with sparql in protege? See Question&Answers more detail:os...

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

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444 views

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sparql - path between two resources

Is it possible to count the number of the edges that connect two instance with a SPARQL query? I want to find a path. See Question&Answers more detail:os...

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

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479 views

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sparql - Wikidata results sorted by something similar to a PageRank

In Wikidata (Wikidata SPARQL endpoint), is there a way to order the SPARQL query results with something like a ... following one and so on? See Question&Answers more detail:os...

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

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252 views

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sparql - Is there a way to convert the data format of an RDF vocabulary to SKOS

The rdfs file I'm want to use is cv.rdfs, I want to convert it to SKOS, so I can use it in Maui ... complete noob in the subject. Please help. See Question&Answers more detail:os...

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

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442 views

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sparql - Retrieving data from blank nodes in Wikidata

I am attempting to retrieve data about the lifespans of certain people. This is problematic in cases of ... earliest birthdate) in Wikidata? See Question&Answers more detail:os...

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

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375 views

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sparql - Querying large RDF Datasets out of memory

I want to download two or more datasets on my machine and be able to start a SPARQL endpoint for each. I ... that can fit in this project. See Question&Answers more detail:os...

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

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477 views

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sparql - Some cities aren't instances of city or big city? Odd behaviour of Wikidata

While examining the results of the official example query "Continents, countries, regions and capitals" (on https ... reason for this behaviour? See Question&Answers more detail:os...

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

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