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Re: LDOW2009 Workshop now publishing Linked Data (was Re: Linked Data on the Web (LDOW2009) workshop papers online.)

From: Tom Heath <tom.heath@talis.com>
Date: Thu, 19 Mar 2009 12:55:24 +0000
Message-ID: <89f622f10903190555xa6cd8f5i2c624f7959565d40@mail.gmail.com>
To: Kingsley Idehen <kidehen@openlinksw.com>
Cc: public-lod@w3.org, Knud Hinnerk Möller <knud.moeller@deri.org>
Hey Kingsley,

2009/3/18 Kingsley Idehen <kidehen@openlinksw.com>:
> Tom Heath wrote:
>>
>> Hi all,
>>
>> In the name of eating our own dog food, information about the upcoming
>> LDOW2009 workshop at WWW2009 is now being published as Linked Data.
>> Basically the workshop site [1] now contains a reasonable amount of
>> RDFa about papers, PC members and chairs, with links between LDOW2009
>> authors, chairs and PC members and their corresponding entries in the
>> SW Conference Corpus [2].
>>
>> There is plenty more data that could be exposed, but I think this is a
>> reasonable start. If you want to see the data in other forms, you can
>> use the RDFa Distiller [3], to get e.g. RDF/XML [4].
>>
>
> Tom,
>
> Good start.
> Now we just need to get PDFs into Slidy or model then properly using the
> Bibo Ontology :-)

Yes, there's a lot further to go. One step at a time :)

> I have many URIs but you can safely use:
> <http://myopenlink.net/dataspace/person/kidehen#this> (drop "#this" to get
> my FOAF / OpenID page URLs). I noticed I don't have a URI based on graph I
> just culled from the RDFa :-(

You should have a URI in the graph that the RDFa serialises. In fact
you should have two! This is an artefact of the way the script handles
paper authors vs chairs; because there are few of them, a URI is
specified for each of the chairs, and I used your
<http://myopenlink.net/dataspace/person/kidehen#this> URI for this
purpose.

In contrast, the references to you, me, Chris and Tim in the Programme
follow the authors pattern and just map author names to URIs in the
http://data.semanticweb.org/ namespace (this was the cause of the
issue which Daniel Schwabe spotted where Chris had multiple URIs, and
why he's now referred to as Christian Bizer on the site ;).

Of course this aspect of the script could be enhanced to allow
different URIs for each author to be specified, but I can't really
imagine anyone taking the time to perform the lookup process, tbh.
We'll just have to rely on some smushing to work out that the two
Kingsley Idehen's being referred to are actually the same :)

If the graph you're extracting from the RDFa shows no URI for you,
then something is wrong. I used the pyRDFa distiller at W3C to check
the output, but I notice that Elias's RDFa Extractor [1] produces
different results (fewer triples).

FTR, this was my first experience getting my hands dirty with RDFa,
and pleased to say it was radically better than my experience with
microformats [2], but do we have sufficiently robust and consistent
RDFa extractors to allow us to verify that we're creating the graphs
we intend to?

Cheers,

Tom.

[1] http://torrez.us/rdfa/
[2] http://my.opera.com/tomheath/blog/2008/02/26/microformat-authoring-not-necessarily-easy


> Others:
> you can also view this data using ODE [1] or via the URI proxy service [2]
> which have been RDF/A consumers for a long time :-)
>
> Examples:
> 1.
> http://linkeddata.uriburner.com/about/html/http://events.linkeddata.org/ldow2009/
>  - Page Description
> 2.
> http://linkeddata.uriburner.com/ode/?uri=http%3A%2F%2Fevents.linkeddataorg%2Fldow2009%2F
> - Linked Data Behind the Page
>
> Links:
>
> 1. http://ode.openlinksw.com
> 2. http://linkeddata.uriburner.com/about/<resource-url>  (which is also
> http://demo.openlinksw.com/about/<resource-URL>)
>
> Kingsley
>>
>> Knud, if you're listening, would it be possible to get this data into
>> the SW Conference Corpus (and then maybe updated later if we publish
>> more)? Presumably this would ensure that links to authors not already
>> in the corpus would no longer 404.
>>
>> For the record, the main workshop Web page is generated by a hacky
>> little PHP script that reads a data file; this script is now enhanced
>> to generate RDFa and links to the SW Conference Corpus. If people are
>> interested I can clean the code up and release it under some open
>> license; it makes an easy way to generate a workshop Web site that
>> does Linked Data out of the box.
>>
>> Cheers,
>>
>> Tom.
>>
>> [1] http://events.linkeddata.org/ldow2009/
>> [2] http://data.semanticweb.org/
>> [3] http://www.w3.org/2007/08/pyRdfa/
>> [4]
>> http://www.w3.org/2007/08/pyRdfa/extract?uri=http%3A%2F%2Fevents.linkeddata.org%2Fldow2009%2F&format=pretty-xml&warnings=false&parser=lax&host=xhtml&space-preserve=true&submit=Go!
>>
>>
>> 2009/3/17 Chris Bizer <chris@bizer.de>:
>>
>>>
>>> Hi all,
>>>
>>>
>>>
>>> we  are happy to announce that the papers of this year’s Linked Data on
>>> the
>>> Web workshop are online now and can be accessed at
>>>
>>>
>>>
>>> http://events.linkeddata.org/ldow2009/
>>>
>>>
>>>
>>> Looking at the program, we think that LDOW2009 is going to be again a
>>> exciting event.
>>>
>>>
>>>
>>> Congratulations to the authors and lots of thanks to the members of the
>>> LDOW
>>> program committee for all their tough reviewing work!
>>>
>>>
>>>
>>> We are looking forward to see you in Madrid.
>>>
>>>
>>>
>>> Cheers,
>>>
>>>
>>>
>>> Chris Bizer, Tom Heath, Tim Berners-Lee, Kingsley Idehen
>>>
>>> (LDOW 2009 Organizing Committee)
>>>
>>>
>>>
>>>
>>>
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>>
>>
>>
>>
>
>
> --
>
>
> Regards,
>
> Kingsley Idehen       Weblog: http://www.openlinksw.com/blog/~kidehen
> President & CEO OpenLink Software     Web: http://www.openlinksw.com
>
> Please consider the environment before printing this email.
>
> Find out more about Talis at www.talis.com
> shared innovationTM
>
> Any views or personal opinions expressed within this email may not be those
> of Talis Information Ltd or its employees. The content of this email message
> and any files that may be attached are confidential, and for the usage of
> the intended recipient only. If you are not the intended recipient, then
> please return this message to the sender and delete it. Any use of this
> e-mail by an unauthorised recipient is prohibited.
>
> Talis Information Ltd is a member of the Talis Group of companies and is
> registered in England No 3638278 with its registered office at Knights
> Court, Solihull Parkway, Birmingham Business Park, B37 7YB.
>
> ______________________________________________________________________
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-- 
Dr Tom Heath
Researcher
Platform Division
Talis Information Ltd
T: 0870 400 5000
W: http://www.talis.com/
Received on Thursday, 19 March 2009 12:56:07 UTC

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