Hi Chris,
FYI: web site & pdf document fixed.
Thanks!
Take care,
Fred
UMBEL (Upper Mapping and Binding Exchange Layer) [1] is a lightweight
ontology for relating Web content and data to a standard set of
20,000 subject concepts. Based on OpenCyc [2], these subject concepts
have defined relationships between them, and can act as semantic
binding nodes for any data or Web content.
Very nice work and great to see that UMBEL is available as Linked Data
and already interlinked with various ontologies and datasets.
A further 1.5 million named entities have been extracted from
Wikipedia and mapped to the UMBEL reference structure with
cross-links to YAGO [3] and DBpedia [4].
In order to allow people to browse from DBpedia into UMBEL and in
order to give Semantic Web crawlers more starting points to crawl
UMBEL and its interlinked datasets, it would be great to set RDF links
from DBpedia into UMBEL.
Would it be possible that you send us the 1.5 million RDF links from
UMBEL to DBpedia that you already got so that we can serve them
together with DBpedia via our Linked Data interface and SPARQL endpoint?
Reading the UMBEL documentation, I noticed that you use the
umbel:isLike property to link to DBpedia and the owl:sameAs property
to link to YAGO. For instance:
ne:Pfizer umbel:isLike dbpedia:Pfizer
ne:Pfizer owl:sameAs yago:Pfizer
The UMBEL spec defines umbel:isLike as
"Additionally, the property umbel:isLike can be used to state that two
named entities "likely" have the same identity."
Why do you think that your RDF links to YAGO are more likely to be
correct than your links into DBpedia?
As all three datasets are derived from Wikipedia and Wikipedia page
identifiers should be present in all three datasets, I think we could
use owl:sameAs between all three.
Keep on the great work and let's hope that UMBEL develops into an
important interlinking hub for the Web of Data.
Cheers
Chris
The system can easily be extended with additional dictionaries of
named entities, including ones specific to enterprises or domains.
UMBEL is provided as open source under the Creative Commons 3.0
Attribution-Share Alike license. The complete ontology with all
subject concepts, definitions, terms and relationships can be freely
downloaded [see 5]. All subject concepts and named entities are
available as Linked Data [see 5]. Five volumes of documentation [5]
are also available.
The release is accompanied by about a dozen Web services [6] for
using or manipulating UMBEL, along with a new introductory slide show
[7].
Additional release information may be found on Fred's [8] or my [9]
separate blog postings.
We welcome those with interest or suggestions for improvements to do
so through the UMBEL discussion forum [10]. We will shortly be
putting easier services online for such input.
So, enjoy! We look forward to your commentary, suggestions and
putting UMBEL under production-grade stress. We know will be doing
the same!
Regards, Mike
[1] http://www.umbel.org/
[2] http://www.opencyc.org
[3] http://www.mpi-inf.mpg.de/~suchanek/downloads/yago/
[4] http://dbpedia.org
[5] http://www.umbel.org/documentation.html
[6] http://umbel.zitgist.com/
[7] http://www.slideshare.net/mkbergman/
[8]
http://fgiasson.com/blog/index.php/2008/07/16/starting-to-play-with-the-umbel-ontology/
[9] http://www.mkbergman.com/?p=449
[10] http://groups.google.com/group/umbel-ontology/
