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Commented on Tool Recommendations for Creating owl:sameAs Insta...·Posted inAsk

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François S. That was too obvious 🤦‍♀️ thanks. Dr E. I'll have a look, thanks.

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Tool Recommendations for Creating owl:sameAs Instances in SWRL

Hi all, What tool can I use to make an instance owl:sameAs to another instance based on a rule like: if instance :a :hasValue "some string" then make :a owl:sameAs :aa where :aa is an instance somewhere else (or alternatively :aa when :aa :anotherRelation "some string")? I was thinking of SWRL but I am not sure whether this use-case is covered... Any suggestions welcome.

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Ready-to-Use Machine Learning Ontologies for Study Representation

Are there any ready-to-use machine learning ontologies possibly extendable to represent a ML study with its input and output?

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Commented on Suggestions for Promoting Research Grant Opportuni...·Posted inAsk

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LinkedIn groups?

Commented on Integrating Pareto Optimization in Semantic and Fa...·Posted inAsk

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I don't have a specific use-case at hand. As I am in materials research, an application could be the search for a novel material that has properties A, B and C that are needed for a specific application (e.g. photovoltaics, catalysis, ...) and these can't be tuned independently. At the moment I am trying to make a point to my community where these types of problem are very common and there is still a lack of understanding how and why ontologies can be useful.

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Integrating Pareto Optimization in Semantic and Faceted Search

Semantic/Faceted Search and Pareto Optimization Is there a way to include Pareto optimization approaches to a semantic search or faceted search in our community? I am used to using SPARQL to combine independent facets/requests in one query kind of like a filter. What would be needed for dependent facets where one parameter can only be improved if another is worsened (Pareto)? Has anyone ever seen anything like that using semantic technologies?

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Commented on Tools to Visualize Knowledge Graphs with RDF Suppo...·Posted inAsk

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Phil T. And vice versa: model-level visualization does not work for instance-level visualization... For model-level (ontologies) I usually use VOWL because it supports at least some basic OWL specific rules. Still, lots of nested constraints/rules/axioms would be missing there though. For instance-level (knowledge graph) I think still some graph-like representation is preferred over text-based because it could confuse people outside the KG community (who are usually the ones we're presenting to, right?). Just that the user should be able to chose what part of the model-level ontology is shown perhaps using colors, shapes, 3D viz etc...

Commented on Tools to Visualize Knowledge Graphs with RDF Suppo...·Posted inAsk

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Well and of course support for import of external files as I have my KG already and don't want to recreate it manually XD

Commented on Tools to Visualize Knowledge Graphs with RDF Suppo...·Posted inAsk

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With knowledge graph, I mean not the ontology itself, but the underlying linked data using the ontology, i.e. basically the instance level. Amine Saboni, daria Which tool in Protege supports visualization of these instances? I only know of Ontograph, OWLviz, WebVOWL for visualization of the classes. My question is really about the visualization. I have never seen an intuitive visualization of a knowledge graph. Especially I don't want the ontological classes and the instances in my KG to appear on the same graph as this would make the graph explode and make it even messier. I would like a software where I can for example

color instances of different classes in different colors
display RDF* statements like edge properties preferably with

filters for specific values or
ability to scale the edges according to the RDF* statements' value

So basically RDF* combines knowledge graphs with property graphs, so I want to be able to use the advantages of bothh.

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Tools to Visualize Knowledge Graphs with RDF Support

Who can recommend tools/software to visualize knowledge graphs with RDF* support? (https://w3c.github.io/rdf-star/cg-spec/editors_draft.html) Stardog has something like this, but not very flexible/adaptible imo...

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