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GoodRelations - The Web Vocabulary for E-Commerce

This is the archive of the goodrelations dicussion list

GoodRelations is a standardized vocabulary for product, price, and company data that can (1) be embedded into existing static and dynamic Web pages and that (2) can be processed by other computers. This increases the visibility of your products and services in the latest generation of search engines, recommender systems, and other novel applications.

[goodrelations] goodrelations app json data

Martin Hepp (UniBW) martin.hepp at ebusiness-unibw.org
Wed Oct 7 14:06:34 CEST 2009

which app do you mean?

- The LOC dataspace at http://loc.openlinksw.com/sparql supports xml, 
json, html, etc.
- Yahoo BOSS supports XML with RDF/XML as one subnode, and a feed format.
- The GoodRelations Search demo at 
http://goodrelations-search.appspot.com/ is an early prototype that 
currently supports only inspecting the Yahoo index. Thus, the output is 
HTML only. If you want structured data, simply invoke the Yahoo BOSS 
interface directly. This is very straightforward:
   START ="0"
   QUERY ="cars"
   query = urllib.quote_plus(QUERY)
   uri = 
% (query, START)
   yahooresult = urllib.urlopen(uri)

You can then extract the RDF data collected by Yahoo:

   dom = minidom.parse(yahooresult)
   results = []
   elements = dom.getElementsByTagName('result')
   for hit in elements:
        abstract = hit.getElementsByTagName('abstract')
        if len(abstract) == 0:
            abstract = "No abstract available. "
            abstract = abstract[0].firstChild.data
        clickurl = hit.getElementsByTagName('clickurl')[0].firstChild.data
        dispurl = hit.getElementsByTagName('dispurl')[0].firstChild.data
        rdf = hit.getElementsByTagName('searchmonkey_rdf')[0]
        rdf = rdf.getElementsByTagName('rdf:RDF')
        if len(rdf) == 0:
            rdf = "No RDF Found"
            rdfdata = rdf[0].toxml()
            rdfdata = parseRDF(rdfdata.encode('ascii', 'replace')) # 
TODO: Find better solution for non-ascii content in RDF
            rdf = "RDF metadata found (%d statements)" % len(rdfdata)

You need a Yahoo APP ID, which is available for free.


Laurian Gridinoc wrote:
> Hello,
> Is there any parameter which would allow me to retrieve the search results
> in json, or xml; currently the html output is hardly usable with XPath.
> Thank you,
> Laurian Gridinoc
> http://purl.org/net/laur

martin hepp
e-business & web science research group
universitaet der bundeswehr muenchen

e-mail:  mhepp at 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 
twitter: mfhepp

Check out GoodRelations for E-Commerce on the Web of Linked Data!


Recipe for Yahoo SearchMonkey:

Talk at the Semantic Technology Conference 2009: 
"Semantic Web-based E-Commerce: The GoodRelations Ontology"

Talk at 

Overview article on Semantic Universe:

Project page:

Resources for developers:

Tutorial materials:
CEC'09 2009 Tutorial: The Web of Data for E-Commerce: A Hands-on Introduction to the GoodRelations Ontology, RDFa, and Yahoo! SearchMonkey 

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