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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 18:16:55 +0100
Cc: semantic-web at W3C <semantic-web@w3c.org>, semanticweb@yahoogroups.com, public-lod@w3.org
Message-Id: <9CAD7637-F3E7-47D2-88EC-784C385E0219@garlik.com>
To: Kingsley Idehen <kidehen@openlinksw.com>

On 20 May 2009, at 16:38, Kingsley Idehen wrote:
> Steve Harris wrote:
>> 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
> Steve,
>
> The data is already in an RDF Store. Of course, you can add yours  
> etc. :-)
>
> Martin should have sent links like:
>
> 1. http://tr.im/lThV -- the whole ontology
> 2. http://tr.im/lTiC -- sampling of Products or Service Model  
> instance data

Cool, how do I for eg. get the immediate data around http://openean.kaufkauf.net/id/EanUpc_0001067792600 
  out? It's not obvious how you request it.

Do I just issue SPARQL to somewhere? The SPARQL link at the bottom  
goes to a page about SPARQL.
I poked around for a bit and tried
http://lod.openlinksw.com/sparql?query=DESCRIBE+%3Chttp%3A%2F%2Fopenean.kaufkauf.net%2Fid%2FEanUpc_0001067792600%3E&output=n3
but it gives an error, so I'm not sure what I did wrong.

- 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>
>>
>
>
> -- 
>
>
> Regards,
>
> Kingsley Idehen	      Weblog: http://www.openlinksw.com/blog/~kidehen
> President & CEO OpenLink Software     Web: http://www.openlinksw.com
>
>
>
>

-- 
Steve Harris
Garlik Limited, 2 Sheen Road, Richmond, TW9 1AE, UK
+44(0)20 8973 2465  http://www.garlik.com/
Registered in England and Wales 535 7233 VAT # 849 0517 11
Registered office: Thames House, Portsmouth Road, Esher, Surrey, KT10  
9AD
Received on Wednesday, 20 May 2009 17:17:30 GMT

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