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Questions tagged [ontorefine]

10 questions
2
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1 answer

Where is the “SPARQL” button in OntoRefine tab of GraphDB 9.5 Free Edition?

I wanted to transform tabular data into linked data. I was trying to use SPARQL construct to achieve this in GraphDB 9.5 Free edition. From the tutorials in GraphDb website it says "You can press the button SPARQL from the right top corner to…
slm12slm slm12slm
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1 answer

OntoText Refine - UI Issues

I'm new to OntoText GraphDB v10 and was trying the new standalone OntoText Refine v1 to import data but the UI in the RDF Mapping extension seems to be broken, at least on Windows10 version (OSX version works fine). Any idea how I can fix this? Hope…
Geto
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Adding rdf:type to a blank node in Ontorefine

I'm using Ontorefine within GraphDB to create RDF triples from a csv source. It seems impossible to add a rdf:type when the subject is a blank node. When you hit the arrow in the bottom right corner of an object that is a blank node, you can type a…
NewMarc
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Tabular import function missing on Graph DB desktop, any solutions?

I have the desktop version of Graph DB and I wanted to use the function import -> tabular. However, I do not have this function? I tried installing the Graph DB free but it is still not there. What can I do? Hope Grijseels I reinstalled the program,…
Hope Grijseels
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1 answer

How do we give an identification to a relationship in OntoRefine RDF mapping?

I'm working on a transformation work in which I need to transform a property graph dataset into a RDF dataset. There are so many n-ary relationships that need to be traited as a class, but I do not know how to affect an unique identification on…
Arnaud Lee
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1 answer

How to manage the memory allocation for GraphDB's OntoRefine (based on OpenRefine)

OpenRefine has some means of managing the memory allocation to make it possible for large datasets to be manipulated (see https://docs.openrefine.org/manual/installing#increasing-memory-allocation) Where are the similar options in GraphDB's version?…
Rob
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Adding nested triple to blank nodes in OntoRefine not possible?

I'm using the latest version of OntoRefine and want to add a nested triple to a blank node. I'm following the exact instructions on Ontotext website. In the interface there is supposed to appear an arrow next to the object (in the picture on the…
NewMarc
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1 answer

Using Ontorefine to import data from a Postgresql database

I am using GraphDD 9.5 Free and I would like to import data from a Postgresql database (version 13 installed on a Windows 64 bits machine). However, after I add the connection settings, even if it looks like I'm connected when I run a simple select…
ANA MARIA
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How to Update the Input File of an OntoRefine project in GraphDB

I'm trying to script RDF/OWL data (re)loading to a GraphDB store and I wonder how to be able to process again a CSV file through the Ontorefine component, keeping the columns modifications and the RDF mapping, only using the REST API.
Laurent Pierre
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How to set and update properties on existing nodes via CSV file using SPARQL on GraphDB

I would like to set a new property to existing nodes whose type is :Disease. The CSV file has two columns. The first has the header Disease_Name and the second one has the header Disease_Class. I want to match the nodes (subject ?disease) for which…
ilmav
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