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Re: ANN: GoodRelations - E-Commerce on the Web of Data - New Datasets and Applications

From: Steve Harris <steve.harris@garlik.com>
Date: Wed, 20 May 2009 16:02:05 +0100
Cc: Libby Miller <libby@nicecupoftea.org>, semantic-web at W3C <semantic-web@w3c.org>, "semanticweb@yahoogroups.com" <semanticweb@yahoogroups.com>, "public-lod@w3.org" <public-lod@w3.org>
Message-Id: <6934E6FB-C2D9-4C64-AE23-30F8B3E02662@garlik.com>
To: martin.hepp@ebusiness-unibw.org
Alternatively you could put that data in a RDF store, and just serve  
up the fragments using a wrapped CONSTRUCT query.

That's what we do for qdos.com, eg
   http://qdos.com/user/Steve-Harris/18b6f60b41e05aaa418565ebfe901d6b/rdfxml
and it's pretty efficient, more efficient that storing 1000 separate  
files as XML.

The downside is that the RDF is not very pretty to look at, but it  
could be with a better RDF/XML serialiser.

- Steve

On 20 May 2009, at 14:59, Martin Hepp (UniBW) wrote:

> Hi Steve,
> as I replied to Libby (but did not include all mailing lists): The  
> whole data set is served from currently 100 smaller files, which  
> will be broken down to 1000 files shortly. For various reasons  
> however, we don't want to serve one file per element, because that  
> will create a huge overhead - the individual data sets are rather  
> small (a few triples per item). Having one million micro-files is  
> hard to manage. Also, since we want to stay within OWL DL, we would  
> have to duplicate proper ontology header meta-data a million times.
>
> Thus, we use a (rather large) set of rules in the .htaccess file to  
> serve that part of the data set that contains the element you are  
> actually looking for. You will receive a few more triples than you  
> need, but simply discard those ;-)
>
> Martin
>
> Steve Harris wrote:
>> Very cool resource.
>>
>> On 20 May 2009, at 10:18, Libby Miller wrote:
>>>> Individual commodity descriptions can be retrieved as follows:
>>>>
>>>> http://openean.kaufkauf.net/id/EanUpc_<UPC/EAN>
>>>>
>>>> Example:
>>>>
>>>> http://openean.kaufkauf.net/id/EanUpc_0001067792600
>>>
>>> This seems to give me multiple product descriptions - am I  
>>> misunderstanding?
>>
>> Yeah, looks like it returns the entire document that the particular  
>> EAN appears in.
>>
>> Not very linked data friendly (you'll end up with a large  
>> proportion of repeated triples in identical graphs, with different  
>> graph URIS), but certainly better than nothing.
>>
>> - Steve
>>
>
> -- 
> --------------------------------------------------------------
> martin hepp
> e-business & web science research group
> universitaet der bundeswehr muenchen
>
> e-mail: mhepp@computer.org
> phone:  +49-(0)89-6004-4217
> fax:    +49-(0)89-6004-4620
> www:    http://www.unibw.de/ebusiness/ (group)
> 	http://www.heppnetz.de/ (personal)
> skype:  mfhepp
>
> Check out the GoodRelations vocabulary for E-Commerce on the Web of  
> Data!
> = 
> = 
> ======================================================================
>
> Webcast explaining the Web of Data for E-Commerce:
> -------------------------------------------------
> http://www.heppnetz.de/projects/goodrelations/webcast/
>
> Tool for registering your business:
> ----------------------------------
> http://www.ebusiness-unibw.org/tools/goodrelations-annotator/
>
> Overview article on Semantic Universe:
> -------------------------------------
> http://www.semanticuniverse.com/articles-semantic-web-based-e-commerce-webmasters-get-ready.html
>
> Project page and resources for developers:
> -----------------------------------------
> http://purl.org/goodrelations/
>
> Upcoming events:
> ---------------
> Full-day tutorial at ESWC 2009: The Web of Data for E-Commerce in  
> One Day: A Hands-on Introduction to the GoodRelations Ontology,  
> RDFa, and Yahoo! SearchMonkey
>
> http://www.eswc2009.org/program-menu/tutorials/70
>
> Talk at the Semantic Technology Conference 2009: Semantic Web-based  
> E-Commerce: The GoodRelations Ontology
>
> http://www.semantic-conference.com/session/1881/
>
> <martin_hepp.vcf>

-- 
Steve Harris
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Received on Wednesday, 20 May 2009 15:02:45 GMT

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