Chris Bizer wrote:
Hi Kingsley,
RDFization / Triplicifation of the Freebase Web Services (we've had
this since a few weeks after Banff)
great! Can you please explain this in a bit more detail.
Do you already provide a wrappers so that I can simply put a URI into
the Tabulator or DISCO adress bar and get the corresponding data from
Freebase displayed? Somethink like the RDF Book Mashup?
Yes.
We've had a sponger for Freebase for a while, the issue has been the
quality of the end product (their APIs only go so far) and some quirks
in our sponger cartridge (e.g. it gets too much data i.e. all the Atom
and RSS it finds in addition to the stuff from their API).
If yes, it would be great if you could send some example URIs to the
list.
Of course, I just want it cleaned up first :-) See the links below.
If this (as I guess) somehow involves SPONGER, could OpenLink setup
SPONGER in a way that is works like a simple RDF wrapper around the
Freebase API and so that people can just use the Freebase data with
Tabulator or any other Linked Data browser without having to go into
the details of SPONGER first?
Of course. This is what happens today via our RDF Browser (i.e it use
the Sponger Proxy Service of it's host instance). What you are asking
for is the Sponger as a Web Service (*which means having it on e.g.
DBpedia instance*). The funny thing is that is is always available as a
REST Service of all Virtuoso instances, it just isn't on by default for
a myriad of reasons.
Here is an example URI:
http://demo.openlinksw.com/proxy/rdf/http://www.freebase.com/view/en/open_database_connectivity
(About ODBC
<http://demo.openlinksw.com/rdfbrowser/?uri=http%3A%2F%2Fwww.freebase.com%2Fview%2Fen%2Fopen_database_connectivity>
from Freebase)
http://demo.openlinksw.com/proxy/rdf/http://musicbrainz.org/release/ef5c8852-ac75-4302-8b3b-8c587f78256a.html#this
(About Diana Ross
<http://demo.openlinksw.com/rdfbrowser/?uri=http%3A%2F%2Fdemo.openlinksw.com%2Fproxy%2Frdf%2Fhttp%3A%2F%2Fmusicbrainz.org%2Fartist%2F60d41417-feda-4734-bbbf-7dcc30e08a83.html%23this>
from Musicbrainz)
DISCO and Tabulator aren't processing these URIs above. I suspect the
secondary "http://"; pattern is possibly problematic for both, and > 100
Triple count for DISCO re. Diana Ross. Anyway, we are going to shave the
Triple Count down via Paging re. the Sponger proxy so that you have the
equivalent of what's demonstrated via the DISCO view of my URIs below:
1. My Bookmarks Data Space
<http://www4.wiwiss.fu-berlin.de/rdf_browser/?browse_uri=http%3A%2F%2Fmyopenlink.net%2Fdataspace%2Fkidehen%2Fbookmark%2FKingsleyBookmarks>
2. My Briefcase Data Space
<http://www4.wiwiss.fu-berlin.de/rdf_browser/?browse_uri=http%3A%2F%2Fmyopenlink.net%2Fdataspace%2Fkidehen%2Fbriefcase%2FKingsley%2527s%2520Briefcase>
(aka WebDAV resource collection)
3. My Entire Data Space
<http://www4.wiwiss.fu-berlin.de/rdf_browser/?browse_uri=http%3A%2F%2Fmyopenlink.net%2Fdataspace%2Fkidehen>
I think this would be really helpfull as we could interlink DBpedia
and Freebase afterwards :-)
Yes.
Kingsley
Have a nice Sunday.
Cheers,
Chris
--
Chris Bizer
Freie Universität Berlin
+49 30 838 54057
[EMAIL PROTECTED]
www.bizer.de
----- Original Message ----- From: "Kingsley Idehen"
<[EMAIL PROTECTED]>
To: <[email protected]>
Cc: <[email protected]>; <[EMAIL PROTECTED]>
Sent: Sunday, March 30, 2008 6:43 PM
Subject: Re: [Dbpedia-discussion] Metaweb has published Freebase data
dumps
Chris Bizer wrote:
Hi all,
Metaweb has started to publish data dumps of the complete Freebase
dataset under Creative Commons Attribution (CC-BY) license. The
dumps are in a triple format (not RDF) and Metaweb will update the
dumps every three months from now on.
See:
http://blog.freebase.com/2008/03/28/full-data-dumps-are-now-available/
I think that it would really be exiting to turn these dumps into
RDF, publish them on the Web as Linked Data and interlink them with
data sets from the LOD cloud. For instance, interlinking them with
DBpedia should be very easy as both datasets contain Wikipedia
article identifiers.
If somebody is interested in doing this, please contact me.
Robert Cook from Metaweb has pointed me at the dumps, so it looks
like Metaweb itself would also support this effort.
Chris,
Nice development in the right direction by Freebase :-)
There are dual benefits here:
1. SQL Data
2. XML Data
I see value in using the above to demonstrate:
1. Linked Data from SQL-RDF mapping (virtual triples)
2. Persistence of the Virtual Triples to create physical triples
3. RDFization / Triplicifation of the Freebase Web Services (we've
had this since a few weeks after Banff)
All of the above provide nice tutorial material re. the routes the
creating and publishing Linked Data which is still a moderately
understood subject.
We are certainly interested from an OpenLink (Virtuoso Storage and
Publishing) and also Zitgist perspective (Storage and Publishing that
leverages UMBEL).
There will be more on UMBEL and how Zitgist has used this to glue a
myriad of ontologies together resulting in a Linked Data based
Concept Scheme <http://www.w3.org/TR/skos-reference/#L2430>.
Kingsley
Cheers
Chris
--
Chris Bizer
Freie Universität Berlin
+49 30 838 54057
[EMAIL PROTECTED]
www.bizer.de
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Regards,
Kingsley Idehen Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO OpenLink Software Web: http://www.openlinksw.com
--
Regards,
Kingsley Idehen Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO
OpenLink Software Web: http://www.openlinksw.com
