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VisualDataWeb / OWL2VOWL

Converting ontologies for WebVOWL
http://vowl.visualdataweb.org
MIT License
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Unconnected datatype nodes #23

Closed steffen-l closed 7 years ago

steffen-l commented 7 years ago

There are several unconnected datatypes "flying around" in the NEW* version of OWL2VOWL, which cannot be correct (datatypes are NOT entities with an IRI like classes but always need an accompanying datatype property, i.e., they are ALWAYS linked and never along in VOWL).

For instance, this can be easily seen in FOAF: http://visualdataweb.de/webvowl/#iri=http://xmlns.com/foaf/0.1/

It was not a problem in the OLD** version of OWL2VOWL: http://vowl.visualdataweb.org/webvowl/index.html#iri=http://xmlns.com/foaf/0.1/

Other examples showing this problem are GoodRelations (after changing the collapsing level to 0) and OntoViBe: http://visualdataweb.de/webvowl/#iri=http://purl.org/goodrelations/v1 http://visualdataweb.de/webvowl/#iri=http://ontovibe.visualdataweb.org/

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steffen-l commented 7 years ago

Similar issue appears for owl:Thing - see e.g. http://visualdataweb.de/webvowl/#iri=https://raw.githubusercontent.com/andrewstellman/pbprdf/master/generated/ontology.ttl

owl:Thing nodes should also NEVER "fly around" on their own, but must ALWAYS be connected by properties in VOWL.

linkvt commented 7 years ago

A part of the problem with flying datatypes is very likely a WebVOWL bug with equivalent properties, see here http://visualdataweb.de/webvowl/#iri=http://visualdataweb.de/ontobench/ontology/ontology.ttl?features=equivalentprop,equivalentpropdata

The bug described in the comment above is most likely an OWL2VOWL bug, because the generated JSON contains the additional Things and Literals - so WebVOWL will display them.

BlackDark commented 7 years ago

After the fixes in WebVOWL goodrelations and ontovibe are working properly as far as i can see.

In FOAF and the ontology from andrew stellman some constellations results in the free floating literals/things i guess.

steffen-l commented 7 years ago

I am afraid, but I cannot confirm that the issue is solved in OntoViBe after the WebVOWL fix - there are still unconnected literals, see http://visualdataweb.de/webvowl/#iri=http://ontovibe.visualdataweb.org/ Or do I overlook anything?

BlackDark commented 7 years ago

Cache emptied and hard reload of page?

This is my screen: image

steffen-l commented 7 years ago

right. my bad. sorry. looks good now.