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Questions tagged [knowledge-graph]

Knowledge graph is an enterprise-wide integrated database based on graph technologies. The term was widely introduced by Gartner's Hype Cycle of Emerging Technologies, 2018. Use the 'google-knowledge-graph' tag, if you mean Google Knowledge Graph solely.

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How to build question answering program based on knowledge graph in python

I have a use case where, I have several word files. Currently I am extracting the text and storing it in Elasticsearch. From Elasticsearch, upon doing full phrase query, I am only getting which page has the best score and its content. Now, I want…
Subhabrata Mallick
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How to store my Knowledge Graph in the database to answer a search query?

I have been new to Machine Learning and I'm trying to implement a Knowledge Graph and use it for search purposes (Just like Google and Bing does). This is my approach to it. I have some text documents with me. I'm familiar with…
user11106530
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Why is a code instead of the string used in RDF for an object?

For example: entity:f06574 rdfs:label "Orioles" Or such a format: :tt0268252 a :Movie . In either case, f06574 and tt0268252 are code, not the actual string of the entity or instance. One reason may be due to the fact that the same string may…
ling
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Redefined RDF properties in Wikidata

Wikidata seems to redefine common RDF properties such as: rdf:type (P31 in Wikidata), rdfs:subClassOf (P279) rdfs:subPropertyOf (P1647) ... What's the motivation behind this? Why not just use the RDF properties, making it more similar to other…
andrefs
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If the Giant Global Graph is implemented, how to search?

Different from knowledge graph, semantic data is decentralized. Does this mean that each search takes a lot of time to download semantic data? Does the search service require a lot of storage and memory space?
BlackGlory
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Multi-model RDF store vs Graph database

I have read the question on SO: Graph DBs vs. Document DBs vs. Triplestores. I understand that there's a lot of advantage using OWL/RDFS for semantic data because they are compact and they're just a collection of edges. I was gonna try a triplestore…
John Strood
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How to Convert NLP Question to Knowledge Graph triple?

I have what I think is a simple question. I am trying to put together a question answering system and I am having trouble converting a natural question to a knowledge graph triple. Here is an example of what I mean: Assume I have a prebuilt…
MaxConners
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SPARQL query to find the geoshape a coordinate is in

I have knowledge graph with sf:Point (for example "POINT(51.95656412820512 5.880331774358974)"^^). I want to know which country or administrative region this point is located in (by way of checking…
Sibbe Bakker
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Knowledge Graph vs Ontology vs RDF Graph

I made a small RDF graph that looks as follows: @prefix ex: http://example.org/ . @prefix rdfs: http://www.w3.org/2000/01/rdf-schema# . ex:a a ex:C, ex:S . ex:C rdfs:subClassOf ex:D . ex:D rdfs:subClassOf ex:E . Now I am confused if I could…
izolveidon
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How to find definition of predicate in YAGO like domain,range,comment?

Thesedays I have been struggling to construct a new dataset with opensource dataset. The first opensource dataset I downloaded is YAGO4.5. I have to take all the predicates of triples and analyse these predicates. In general, I can find the…
unstuck
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How to retrieve child records for fields of study in MAKG using SPARQL?

I am currently working with the Microsoft Academic Knowledge Graph (MAKG) dataset, specifically using the RDF schema provided at https://makg.org/wp-content/uploads/2021/03/mag-rdf-schema-2021-03-2.png. I am querying the dataset using SPARQL through…
Bobby
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"Base" concepts in an ontology

It seems I am lacking some nomenclature and after searching a few "keywords" I came out empty handed. When one defines concepts in an ontology as subclasses of other concepts or being defined as being related in particular way (via relations) to…
geguze
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Data fabric architecture design - direct SPARQL access or API abstraction

In a data fabric architecture, is it better to give direct access to internal SPARQL databases or to use an API? I am reviewing an architecture for a data fabric. The architecture has a collection of central knowledge graphs hosted behind SPARQL…
PlagTag
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What options are available for labeling data in Word using proprietary taxonomies and ingesting it into a knowledge graph?

Do any tools exist that allow Word users to label data using proprietary taxonomies for ingestion into a knowledge graph? I have a group of subject matter experts that write very sensitive and domain-specific documents that I'd like to automatically…
illiter8
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How to allow for dereferencing literals with a datatype in RDF?

The resource description framework (RDF) allows specifying a distributed system of resources. For example, I could specify that I am friends with Bill using the triple …
Sven Voigt
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