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Re: last.fm events RDFizing

From: Keith Alexander <k.j.w.alexander@gmail.com>
Date: Tue, 12 May 2009 12:57:55 +0100
To: "Kingsley Idehen" <kidehen@openlinksw.com>, "David Canos" <davidcanos@gmail.com>
Cc: "Yves Raimond" <yves.raimond@gmail.com>, public-lod@w3.org
Message-ID: <op.uttfite4zdej1c@polar-bear-laptop.local>
Hi Kingsley,

How does this work under the hood? uriburner recognises the last.fm  
domain, and parses the URI to understand how to call the last.fm web  
service api? Then it passes the result to the stylesheet ? Normally  
uriburner would parse the microformats erdf and rdfa in the page right ?  
But if the uriburner sponger has a special knowledge of the domain name,  
it will use other means to generate the RDF ?

What coverage of last.fm URIs are understood ?

http://linkeddata.uriburner.com/about/html/last.fm/user/winningsperm/events  
doesn't seem to come up with much, and I was hoping for an equivalent to:

http://lastfm.rdfize.com/?username=winningsperm



>
> As per earlier post, all the xslt components of our sponger cartridges  
> are at:
> http://demo.openlinksw.com/DAV/VAD/rdf_mappers/xslt/
>
> Let's tweak rather that reinvent the wheel, everyone is ultimately time  
> challenged :-)
>

Yes, if I had known your uriburner service had a last.fm API xslt, and I  
had been able to get a list of events that a user planned to attend (is  
this possible?), I would definitely not have reinvented the wheel ...   
However, now that it is up there, so long as Tom Heath is happy to host it  
at rdfize.com (thanks Tom), I think it is good to keep it. It is not a bad  
thing to have more than one dataset rdfizing the same domain - especially  
if they link to each other.

Some differences I have spotted between uriburner and lastfm.rdfize.com:

Your mapping uses Vevent as the rdf:type for the event resources - could  
you also type it with mo:Performance, or would that have some strange  
implications?

I chose mo:performer where your conversion uses foaf:topic

There is also a machine-tag property for the events in last.fm's xml - I  
minted http://open.vocab.org/terms/machineTag for it.
I have a vague feeling this could be interesting, and provide a point of  
linkage into, eg: flickr. Can anyone tell me how I can link into a linked  
data coversion of flickr or something, using machine tags ?


Keith
Received on Tuesday, 12 May 2009 11:58:58 UTC

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