Kingsley Idehen wrote:
François Scharffe wrote:
Hugh Glaser wrote:
Hi,
To put it in simple terms for me :-)
Are you after the algorithms we use to identify when two instances
are the same?
Best
Hugh
Yes !
François
So if the answer is "Yes". Then do you mean things in the ABox and TBox?
Must be clear here as being too generic leads to confusion.
Link generators are working at the instance level (ABox), they generate
links between instances. They need some input, a specification of what
should be interlinked. We think this specification can be lifted to an
alignment between vocabularies (TBoxes). Well we are not 100% sure this
will work, that's why we would like to get such tools and their linkage
specifications.
I can take an example, interlinking persons: one dataset is described
with FOAF, the other with VCard.
?x foaf:name ?name.
?y vc:n [
vc:family-name ?fn;
vc:given-name ?gn.
].
the linkage specification might be something like:
if compare(?name, concat(?gn," ",?fn)) > threshold
then output("?x owl:sameAs ?y")
In fact, this specification says
foaf:name <-> concat(vc:given-name," ",vc:family-name)
which is an alignment at the TBox level that can be lifted from the
linkage specification.
I hope I was clear enough this time ;)
Cheers,
François
sameAs is not the best way to align things in the TBox.
Kingsley
On 11/06/2009 12:57, "François Scharffe" <francois.schar...@inria.fr>
wrote:
Dear LODers,
There has been a couple of discussions already on this list on the need
for a vocabulary to represent correspondences between terms of different
vocabularies. We also saw recently various tools (e.g. Silk, ODDlinker)
allowing to automatically interlink datasets given a specification of
what should be linked.
However, there is currently no common way to publish and share this
information (i.e., not the links but the way to generate them, see [1]
for precision).
We are setting up an experiment [1] to see if it is possible to provide
useful services from this data. But for that purpose we need your help.
So this is a call for contribution: we are collecting any specification
of link generator for the LOD graph.
Of course, do not hesitate to comment on the idea or to tell us if you
want to be involved.
We promise a report on this by the end of summer (northern hemisphere
:).
Cheers,
François
[1] http://melinda.inrialpes.fr
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