New method "crosswalk"

[matentzn]

This method takes as an input

• 1 or more SSSOM tables
• one or more crosswalk relations (skos:exactMatch, skos:broadMatch)
• a "--hops" option that defines how many times we want to hop (default 1)

and returns a derived mapping set that contains the following crosswalk rules:

exact: owl:sameAs, owl:equivalentClass, skos:exactMatch broad: rdfs:subClassOf, skos:broadMatch narrow: sssom:superClassOf, skos:narrowMatch x: any mapping property.

• exact - exact -> exact
• exact - x -> x (x can be any property)
• x - exact -> x
• narrow - narrow -> narrow
• broad - broad -> broad

If this works, we need to

• [ ] document this as part of the SSSOM spec

[cmungall]

just a FYI, no action required, but this is degenerate boomer

[matentzn]

This decreases the priority for now, you are right. If we can feed all the mappings as owl:equivalentClass or rdfs:subClassOf it does not matter wether they cross through 3rd party terms.. it could still work. Could be a bit more work for boomer/curators, but yeah, maybe not top priority now for the project. Thanks @cmungall