W3C home > Mailing lists > Public > semantic-web@w3.org > January 2007

Re: Disco Hyperdata Browser, a server-side alternative to Tabulator

From: Chris Bizer <chris@bizer.de>
Date: Tue, 16 Jan 2007 17:39:22 +0100
Message-ID: <00ea01c7398c$e01ab5c0$418d2da0@wrz03715>
To: "T.Heath" <T.Heath@open.ac.uk>, <semantic-web@w3.org>, <public-semweb-ui@w3.org>
Cc: Tobias Gauß <tobias.gauss@web.de>, "Richard" <richard@cyganiak.de>

Hi Tom,

> Hi Chris, Hi Tobias,
>
> Congratulations - this is very cool. Sure enough I have a question... :)
>
> (How) Does Disco handle HTTP 303 redirects?

I thought we would handle them correctly, but ... ;-)

> For instance, I have a slash URI for myself [1] upon which content negotiation 
> is performed. User-agents dereferencing
> this URI will receive a HTTP 303 to either [2] or [3] depending on the content 
> types accepted. This is based on the
> Best Practices for Publishing RDF Vocabs recipes, and seems to work fine 
> according to my testing.
>
> However, when I first entered my URI into Disco I got the "No Information to 
> Display" error. After I then entered
> the URI of the RDF description of me at [3], entering [1] again did produce a 
> page of info about me, taken from
> my RDF description.
>
> So, it seems that my RDF description correctly references my URI, there's just 
> a problem dereferencing slash URIs
> that are also content negotiated. URIs in the revyu.com space such as [4] are 
> configured in the same way and suffer
> the same problem.
>
> Are you able to shed any light on this for me? Or have I missed something 
> obvious?

This is strange and we will have to test it on HTTP level.
I will come back to you when we know more ...

Cheers and sorry for the delay

Chris


> Cheers,
>
> Tom.
>
> [1] http://kmi.open.ac.uk/people/tom/
> [2] http://kmi.open.ac.uk/people/tom/about/html
> [3] http://kmi.open.ac.uk/people/tom/about/rdf
> [4] http://revyu.com/people/martinp/


> -----Original Message-----
> From: public-semweb-ui-request@w3.org
> [mailto:public-semweb-ui-request@w3.org] On Behalf Of Chris Bizer
> Sent: 15 January 2007 16:12
> To: semantic-web@w3.org; semantic_web@googlegroups.com;
> public-semweb-ui@w3.org
> Cc: Tobias Gauß
> Subject: ANN: Disco Hyperdata Browser, a server-side
> alternative to Tabulator
>
>
>
> Hi all,
>
> we have released the Disco - Hyperdata Browser today.
>
> Disco is a simple browser for navigating the Semantic Web as an
> unbound set of data sources. The browser renders all
> information, that
> it can find on the Semantic Web about a specific resource, as an HTML
> page. This resource description contains hyperlinks that allow you to
> navigate between resources. While you move from resource to resource,
> the browser dynamically retrieves information by dereferencing HTTP
> URIs and by following rdfs:seeAlso links.
>
> More information about the browser is found at
> http://sites.wiwiss.fu-berlin.de/suhl/bizer/ng4j/disco/
>
> As the browser is a server-side application, you can test-drive the
> browser without installing anything on your machine. To start the
> browser, just click on http://www4.wiwiss.fu-berlin.de/rdf_browser/
>
> You can also follow our example Semantic Web Ride which demonstrates
> how the Disco browser is used to navigate information about Tim
> Berners-Lee from different Semantic Web sites
> http://sites.wiwiss.fu-berlin.de/suhl/bizer/ng4j/disco/#example
>
> Comments, bug reports and suggestions for improving the browser are
> very welcome.
>
> Cheers,
>
> Chris Bizer and Tobias Gauss
>
>
> --
> Chris Bizer
> Freie Universität Berlin
> Phone: +49 30 838 54057
> Mail: chris@bizer.de
> Web: www.bizer.de
Received on Tuesday, 16 January 2007 16:42:08 UTC

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