I have to agree that almost all the semantic websites I've seen, with
huge list of triples, look at best discouraging, at worst impenetrable.
But for a core set of lenses you require some standard, no ?
Do you have some specific use-cases to begin with ?
best,
Andrea
Il giorno 11/ott/07, alle ore 07:09, Chris Mungall ha scritto:
Sorry to repost something from a list many of you are already
subscribed to; however, this seems like it warrants some specific
discussion on this list.
I know many of you have been wrapping various biological
datasources as RDF - I have been doing the same, using the usual
suspects such as R2RQ and Sesame. The end result is usually an
impenetrable SPARQL endpoint or opaque HTML or Ajax based triple
browser. Exposing triples may be fine if you've got some simple
FOAF data, but it's hardly an ideal way of presenting complex
biological data.
It would be nice to have an agile way to generate non-brittle
domain-specific views of our RDF. The Fresnel/Lens approach seems a
reasonable first step (in my ideal world SWRL and/or some OWL based
query language would be the core technology here, but it's early
days yet).
Is it too soon to propose working together on a core set of HCLS
Lenses?
Begin forwarded message:
Resent-From: [EMAIL PROTECTED]
From: Thomas Franz <[EMAIL PROTECTED]>
Date: October 10, 2007 2:43:40 AM PDT
To: [EMAIL PROTECTED], [EMAIL PROTECTED]
Cc: Jörg <[EMAIL PROTECTED]>
Subject: [ANN] LENA: Lens-based RDF Browser
Dear Semantic-Web and Semantic-Desktop enthusiasts,
I'm pleased to announce the first official release of LENA [1], a
Fresnel Lens based RDF Navigator with SPARQL selector support.
[1] http://isweb.uni-koblenz.de/Research/lena
A demo is available here: http://dom.uni-koblenz.de:8080/lena
LENA stands for LEns based NAvigator. A lens represents a particular
view onto RDF data and is described by the Fresnel Display Vocabulary
[2]. LENA enables viewing RDF data in your web browser, rendered
according to the lens descriptions you provide. LENA supports the
use of
multiple lenses and indicates if they are available for a
resource, so
that a different view onto the same data is always just one click
away!
To write lenses for complex RDF structures, LENA supports SPARQL
selectors. While SPARQL [3] is a designated Fresnel selector
language,
an implementation did not yet exist. LENA provides an extension to
support Fresnel SPARQL selectors that is now integrated into the
Simile
Fresnel engine [4].
The data which shall be processed by LENA, can either be put into the
provided directory or be accessed through a Sesame [5] HTTP
repository.
For more information about the usage of LENA see the project page
[1].
Work on LENA was funded by the X-Media project (www.x-media-
project.org)
sponsored by the European Commission as part of the Information
Society
Technologies (IST) programme under EC grant number IST-FP6-026978.
[1] http://isweb.uni-koblenz.de/Research/lena
[2] http://www.w3.org/2005/04/fresnel-info/
[3] http://www.w3.org/TR/rdf-sparql-query/
[4] http://simile.mit.edu/wiki/Fresnel
[5] http://www.openrdf.org/
--
Thomas Franz
ISWeb, University of Koblenz
http://isweb.uni-koblenz.de/People/Franz
