Error upon migrating a biomedical ontology from OWL to Grakn


#1

I am trying to migrate the Ontology for Biomedical Investigations (OBI) (https://github.com/obi-ontology/obi/blob/master/obi.owl) from OWL to Grakn, but I get an arity mismatch error:

Brams-MacBook-Pro:obi bram$ /Applications/grakn/bin/migration.sh owl -k "obi" -i obi.owl
Migrating data /path/to/obi/obi.owl using Grakn Engine localhost:4567 into graph obi
Arity mismatch when creating rule

The error message is pretty sparse so I was wondering what might cause the error and how I would go about resolving it. For instance, if it is caused by an inconsistency in the OWL file, what should I be looking for?


Migrating OWL to GRAKN
#2

Hi sorry I am just cross posting here: The owl migrator is experimental at the moment and we are trying to find time to properly update it. Perhaps you could try a more custom migration using the XML migrator we provide: https://grakn.ai/pages/documentation/migration/XML-migration.html

Hopefully we will get round to updating it soon so that it works better, but thank you for reporting the problem.