headers
Giovanni Tummarello | 1 Nov 2007 05:20

ann: Semantic Web Pipes


What are Semantic Web Pipes?
-----------------------------------------------

Using Semantic Web Pipes you can fetch, mix and process RDF files
published on the Web. As the output of a Pipe is an HTTP retrievable
RDF model, simple pipes can also work as inputs to more complex Pipes.

This is similar to what Yahoo Pipes does, but highly targeted to allow
live Semantic Web data recombination. We currently support 3 simple
RDF Pipes modules  (Fetch, Mix and SPARQL Transform)  but expect more
soon (including a novel "revocation" module for cooperative RDF
editing)

Pipes are written in a simple XML. E.G. a mixing 2 sources is as
simple as this:

   <simplemix>
     <source url="http://www.w3.org/People/Berners-Lee/card"/>
     <source url="http://g1o.net/foaf.rdf"/>
   </simplemix>

The result can be displayed by invoking the pipe URI, in this case:
http://pipes.deri.org:8080/pipes/Pipes/?id=simplemix

Pipe modules can be nested for more complex operations. For example
the following pipe will fetch Tim Berners-Lee's publications from DBLP
(linked data version), transform the RDF so to use use Tim
Berners-Lee's official URI and merge it with his FOAF file.
(Continue reading)

Permalink | Reply | 0 comments |
headers
T.Heath | 1 Nov 2007 16:25
Picon
Picon
Favicon

ANN: ISWC+ASWC 2007 RDF Data Set Now Live


Hi all,

We're delighted to announce that the RDF data set for this year's ISWC+ASWC is now live, ahead of the
conference next week in Busan, Korea. The data set contains RDF descriptions of a host of things related to
the conference: papers, the people who created them, the organisations they come from, the related talks
where they'll be presented, panel, keynotes, workshops, tutorials, and a whole lot more.

All the conference data is available through a SPARQL endpoint, as browseable, content-negotiated
linked data, and as an rdf/xml dump.

You can access the data set from [1], you can read more about it in the blog post at [2], and there's some
additional documentation about the data.semanticweb.org infrastructure at [3].

We're really pleased with the data set, and hope that people enjoy using it. We'd also welcome any
feedback/comments on the data set.

Cheers,

Knud and Tom.

[1] http://data.semanticweb.org/conference/iswc-aswc/2007
[2] http://data.semanticweb.org/blog/2007/11/01/the-iswcaswc-2007-metadata-now-live/
[3] http://data.semanticweb.org/

--

-- 
Knud Möller (DERI Galway), Tom Heath (KMi, The Open University)
Metadata Chairs
ISWC+ASWC 2007
(Continue reading)

Permalink | Reply | 0 comments |
headers
Matt Williams | 1 Nov 2007 17:31
Picon

Notes from ICTAI '07


I've just come back from the Int. Conf. on Tools in AI (ICTAI 2007)in 
Greece. There was a reasonable amount of usage of OWL/ RDF across a wide 
range of subjects.

For those interested, I've posted some comments and links here:

http://adhominem.blogsome.com/2007/11/01/ictai-07/

Some papers aren't up yet, although I've put links to authors sites so 
you can ask them.

HTH,

Matt

--

-- 
http://acl.icnet.uk/~mw
http://adhominem.blogsome.com/
+44 (0)7834 899570
Permalink | Reply | 0 comments |
headers
Carsten Lutz | 1 Nov 2007 18:35
Picon

DL08 Call for Papers


---------------------------------------------------------------------

       21st International Workshop on Description Logics (DL'08)
                             CALL FOR PAPERS
             		  Dresden,  Germany
                             May 13-16, 2008

                        http://dl.kr.org/dl2008/

The DL workshop is the major annual event of the description logic
research community.  The workshop is a gathering forum to meet, 
discuss and exchange experiences among all those, both in academia
and industry, who are interested in description logics and their
applications.

----------------------------------------------------------------------

IMPORTANT DATES

Paper submission deadline:   15 February 2008
Notification of acceptance:  23 March 2008
Camera ready papers due:     13 April 2008
DL'07 Workshop:              13-16 May 2008 (3 or 4 days, to be decided)

----------------------------------------------------------------------

INVITED SPEAKERS

* Bernhard Ganter, Dresden, Germany
(Continue reading)

Permalink | Reply | 0 comments |
headers
Tim Berners-Lee | 2 Nov 2007 17:15
Picon
Favicon

Pointer to the ontology for generic resources. HTTP Link header.


Alan,

Here is the ontology for  generic resources:

http://www.w3.org/2006/gen/ont

a file which uses it:

http://www.w3.org/2007/ont/meta.rdf

which in n3 is
_______
 <at> prefix : <http://www.w3.org/2000/01/rdf-schema#> .
 <at> prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
 <at> prefix s: <http://www.w3.org/2000/01/rdf-schema#> .
 <at> prefix owl: <http://www.w3.org/2002/07/owl#> .
 <at> prefix doc: <http://www.w3.org/2000/10/swap/pim/doc#> .
 <at> prefix gen: <http://www.w3.org/2006/gen/ont#>.
 <at> prefix link: <#> .
 <at> prefix foaf: <http://xmlns.com/foaf/0.1/>.
 <at> prefix cc:     <http://creativecommons.org/ns#>.

<unit> cc:licence <http://www.w3.org/2000/10/swap/LICENSE.n3>.
<unit.n3> cc:licence <http://www.w3.org/2000/10/swap/LICENSE.n3>;
     a gen:ContentTypeSpecificResource.

<unit.rdf> cc:licence <http://www.w3.org/2000/10/swap/LICENSE.n3>;
     a gen:ContentTypeSpecificResource.
(Continue reading)

Permalink | Reply | 4 comments |
headers
cdr | 2 Nov 2007 18:28

Re: Pointer to the ontology for generic resources. HTTP Link header.


> __$ curl -I http://www.w3.org/2007/ont/unit.rdf
> Link: meta;rel=meta

i had a question about how to link to metadata for an Image or other binary file, from the header, and i think
this addresses it

Link: http://abs/path/to/meta.rdf;rel=http://purl.org/dc/elements/1.1/description

^- correct use with absolute URIs?

will tabulator follow anything here. or only specific predicates denoting available metadata?

can i just throw all the triples (eg EXIF) right into a single link header using commas to seperate?
including strings?

> Tabulator implements this on the cleint side, and pulls in the metadata.
Permalink | Reply | 2 comments |
headers
Ian B. Jacobs | 2 Nov 2007 18:55
Picon
Favicon

Adopted [Was: Nearly adopted; sanity check requested]

On Tue, 2007-10-30 at 21:35 +0000, Ian B. Jacobs wrote:
> On Mon, 2007-10-22 at 20:26 +0000, Ian B. Jacobs wrote:

> ...I've implemented the 
> proposal and updated:  http://www.w3.org/2007/10/sw-logos
> 
> I've left the status as "near adoption." At this time I would prefer not
> to make significant changes in the policy, since none was requested
> during the past week. If you see any bugs, however, please let me know
> before close of business Boston time on 1 November and I'll fix them.

Hello,

I've updated the status section of the Semantic Web logo page [1]
to indicate that the new policy is in effect. Thank you all for your
help with this project!

Ivan Herman has also updated the RDF in the SVG versions of the logos;
see his blog entry on that subject [2].

Best,

 _ Ian

[1]  http://www.w3.org/2007/10/sw-logos
[2] http://ivanherman.wordpress.com/2007/11/02/powdering-logos/
--

-- 
Ian Jacobs (ij <at> w3.org)   http://www.w3.org/People/Jacobs/
Tel:                     +1 718 260-9447
(Continue reading)

Permalink | Reply | 0 comments |
headers
Phil Archer | 2 Nov 2007 23:07

Re: Pointer to the ontology for generic resources. HTTP Link header.


There's a good deal of 'noise' about the HTTP Link header at the moment 
- and not all of it created by me (honest!).

In the currently published draft of the POWDER Description Resources 
document [1] we posit the use of HTTP Link - but, as the doc shows, this 
is something of an open question. Dan Connolly [2] questioned it and, 
well, there's a short thread with lots of links to evidence to support 
the contention that the only real problem with the HTTP Link header is 
that, whilst it was defined in RFC 2068, it was dropped in RFC2616 (but 
it remains in the registry).

The new HTTPBIS WG [3] isn't going to re-instate the header, but Mark 
Nottingham may re-issue his draft on this and the associated HTTP 
Profile header [4]. The 'protocol part' of the Protocol for Web 
Description Resources is handicapped by its absence so I'm certainly 
hoping Mark will re-issue it and that there will be support from 
elsewhere. I guess it's all about trying to build momentum, show use 
cases and the fact that, well, it's proven to work.

On a practical level, the dependency on HTTP Link being formalised has 
been removed from the next published draft of the POWDER doc but we hint 
at its existence and plan to show example of its use in the (yet to be 
written) non-normative Primer.

Phil.

[1] http://www.w3.org/TR/2007/WD-powder-dr-20070925/#assoc
[2] http://lists.w3.org/Archives/Public/public-powderwg/2007Oct/0002.html
[3] http://www.ietf.org/html.charters/httpbis-charter.html
(Continue reading)

Permalink | Reply | 0 comments |
headers
Martin Hepp (DERI AT | 1 Nov 2007 11:33
Picon

Re: Defining subsets of existing OWL / RDF-S vocabularies in another vocabulary?


Dear all:
Summarizing the discussion :-)
My main point was whether it is fine to locally specify the semantics of 
a conceptual element that is in someone else's domain space in my own 
ontology, assumed that

a) I am specifying it in exactly the same way as the owner of that URI 
space does (no differences in the formal and in the intended semantics 
of the element) and
b) I am able to solve all the issues in extracting the full 
specification for a single element from a larger vocabulary / ontology, 
which can be an issue in more expressive ontology languages, namely OWL DL.

There seems to be consensus that, given that a) and b) are mastered, 
there are no objections against it from a Web architecture perspective.

Thanks for all your valuable comments!

Best

Martin
---------------------------------------
http://www.heppnetz.de

Richard Cyganiak wrote:
> Alan,
> 
> On 29 Sep 2007, at 23:33, Alan Ruttenberg wrote:
>>> But if you exchange data with the rest of the world, then you'll have
(Continue reading)

Permalink | Reply | 0 comments |
headers
Manuel Vila | 2 Nov 2007 02:09
Gravatar

The Object Oriented Web


Hi all,

I would be very happy to get some feedback about the concept of  
"Object Oriented Web" as I just outlined here:

http://blog.kindalab.com/2007/11/02/the-object-oriented-web/

Feel free to send your comments either here or on my blog.

Thanks in advance.

Manuel Vila
http://claimid.com/mvila
Permalink | Reply | 12 comments |

Gmane