On 11/16/10 10:45 AM, Paul Houle wrote:
Ookaboo has recently grown to contain about 480,000 pictures of
265,000 topics, we're adding 8,000 images a day so if you don't find
what you're looking for today, just wait a few months. People and
places are particularly well represented, but you'll also find
"miscelaneous" things like
http://ookaboo.com/o/pictures/topic/12461285/Fingerpaint
We've just done a major upgrade of our RDFa output at Ookaboo. For
one thing, we've clarified the relationship between a page
http://ookaboo.com/o/pictures/topic/2021903/Central_Air_Force_Museum
and the thing that a page describes
http://ookaboo.com/o/pictures/topic/2021903/Central_Air_Force_Museum#it
We can then say,
<ookaboo:topic/2021903/Central_Air_Force_Museum> <sioc:topic>
<ookaboo:topic/2021903/Central_Air_Force_Museum#it> .
Generally, we make SIOC assertion about web pages and other sorts of
assertions about #it topics. The primary FOAF assertion we're making
right now is<foaf:depitcts>, but we're planning to make as many FOAF
assertions as possible about #it topics, particularly about people.
The other class of page that is heavily marked up now is the
individual page.
http://ookaboo.com/o/pictures/picture/2022007/Kamov_Ka25_Hormon
Our strategy for dealing with multiple subject terminologies is to
what we call a reference set, which in this case is
http://ookaboo.com/o/pictures/topic/2021903/Central_Air_Force_Museum#it
http://dbpedia.org/resource/Central_Air_Force_Museum
http://rdf.freebase.com/ns/m.0g_2bv
If we want to assert foaf:depicts we assert foaf:depicts against all
of these. The idea is that not all clients are going to have the
inferencing capabilities that I wish they'd have, so I'm trying to
assert terms in the most "core" databases of the LOD cloud.
In a case like this we may have YAGO, OpenCyc, UMBEL and other terms
available. Relationships like this are expressed as
<:Whatever> <ontology2:aka>
<http://mpii.de/yago/resource/Central_Air_Force_Museum> .
<ontology2:aka>, not dereferencable yet, means (roughly) that "some
people use term X to refer to substantially the same thing as term Y."
It's my own answer to the<owl:sameAs> problem and deliberately
leaves the exact semantics to the reader. (It's a lossy expression of
the data structures that I use for entity management)
Any thoughts or suggestions about what I should be doing differently or better?
Very nice!
Using it for some finishing touches we're making re. PivotViewer and
Linked Data integration :-)
--
Regards,
Kingsley Idehen
President& CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen
