On Wed, Apr 20, 2011 at 9:50 AM, John F. Sowa <sowa@xxxxxxxxxxx> wrote:
> AGC
>> ... having one single ontology does not solve the problem. actually
>> IMHO it does not solve anything. it could probably be a good idea to
>> address the issue of interoperability across ontologies rather than
>> pretending to have " one ontology per domain".
>
> Yes, indeed.
>
> There are already a huge number of implemented and proposed ontologies,
> and the largest number of potential ontologies comes from the trillions
> of dollars of legacy software. The total number is finite, but it is
> sufficiently large that infinity is the only practical upper bound.
>
> BS
>> Who will keep the N-squared mappings up to date, for an N that is
>> increasing, if AGC gets his way, without limit? Who will pay for this
>> ever increasing mapping effort? Who will oversee the mapping effort?
>
> The only reasonable solution is to provide automated methods for
> discovering the mappings. Adolf Lindenbaum showed how to do that
> over 80 years ago -- it's called the Lindenbaum lattice.
>
> For a brief survey, see Section 6 and 7 of the following paper:
>
> http://www.jfsowa.com/pubs/rolelog.pdf
>
> John (01)
It would be nice, if it worked. But in practice, at least in the areas
with which I am familiar, it doesn't. The mappings I know of between
ontologies in practical use (for example between different anatomy
ontologies) involve very costly manual effort, and even then they are
still imperfect (and fragile as the mapped ontologies themselves
change). See e.g. the papers by Bodenreider (who does the best work in
this field) listed here: (02)
http://mor.nlm.nih.gov:8000/pubs/offi.html (03)
(and especially the items co-authored with Zhang).
Can John point to examples of practically useful mappings created and
updated automatically through appeal to some sort of Lindenbaum
lattice-based technology?
BS (04)
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