Is wolf a man?
Posted on April 22 2005 by Lars Marius Garshol
in reponse to From RDF to Topic Maps and back again
(Firstly: thank you for a very good summary of the RDFTM survey!)
I'd like to comment on the issue of expressing "man is a wolf" in topic maps. It is actually quite easy in topic maps: metaphorical-is-a(man : thing, wolf : metaphor).
The role types here tell you that "man" is the thing that is metaphorically a "wolf", and so you'll know that this does mean "man is a wolf" and not "wolf is a man", and you could easily make Omnigator display this as "man is a wolf" and "wolf has been used a metaphor for man".
This issue also pops up in the "Wilbert likes apple" example above. Topic maps need not only the association type "likes", but also the role types "liker" and "liked".
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