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Dear all:

We pretty much finalized a service update for GoodRelations, which 
mainly defines a few additional properties that are important for the 
rental and accommodation business. Also, we redesigned the language 
reference in HTML completely.

Except for a few minor issues listed below, the update is fully 
backwards-compatible and should not break existing data or code.

A preview is available at

	http://www.heppnetz.de/ontologies/goodrelations/20100412/v1.html
	http://www.heppnetz.de/ontologies/goodrelations/20100412/v1.owl

An UML diagram highlighting the planned extensions is at

	http://bit.ly/cRTRE6

A change log is at

	http://bit.ly/dhXqY9

Please report any suggestions or feedback before Thursday, April 22, 
2010. We plan to officially release the service update on Friday.

Highlights:
==========
- validity dates for opening hours
- new gr:owns property for indicating the products that you own, which 
allows exposing ownership data for future recommender systems
- availability intervals for offers, important for rental businesses
- eligible contract durations and advance booking requirements
- shipping and delivery charges can now be constrained to order volumes 
in terms or quantity or a monetary amount ("free shipping from 20 USD 
onwards..."
- ordering relations for qualitative values, which may be useful e.g. 
for modeling garment sizes (XL>L>M>S) etc.

Backward Compatibility:
======================
The only changes that may (but should not) affect existing data or code 
are the following:

1. We removed the rdfs:range statement for gr:legalName. It used to be 
xsd:string, but that prevented someone from indicating the natural 
language, since the language tag can only be attached to untyped RDF 
literals.

2. We changed the domain of gr:validFrom and gr:validThrough to the 
union of gr:Offering, gr:OpeningHoursSpecification, and 
gr:PriceSpecification instead of just gr:Offering and 
gr:UnitPriceSpecification. This allows specifying the validity interval 
of offers, opening hours, payment charge specifications, and delivery 
charge specifications.

The rest are either fixed typos or additional language elements that are 
fully backwards compatible.

Best wishes

Martin Hepp

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

e-mail:  hepp at ebusiness-unibw.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!
=================================================================

Project page:
http://purl.org/goodrelations/

Resources for developers:
http://www.ebusiness-unibw.org/wiki/GoodRelations

Webcasts:
Overview - http://www.heppnetz.de/projects/goodrelations/webcast/
How-to   - http://vimeo.com/7583816

Recipe for Yahoo SearchMonkey:
http://www.ebusiness-unibw.org/wiki/GoodRelations_and_Yahoo_SearchMonkey

Talk at the Semantic Technology Conference 2009:
"Semantic Web-based E-Commerce: The GoodRelations Ontology"
http://www.slideshare.net/mhepp/semantic-webbased-ecommerce-the-goodrelations-ontology-1535287

Overview article on Semantic Universe:
http://www.semanticuniverse.com/articles-semantic-web-based-e-commerce-webmasters-get-ready.html

Tutorial materials:
ISWC 2009 Tutorial: The Web of Data for E-Commerce in Brief: A Hands-on 
Introduction to the GoodRelations Ontology, RDFa, and Yahoo! SearchMonkey
http://www.ebusiness-unibw.org/wiki/Web_of_Data_for_E-Commerce_Tutorial_ISWC2009

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[eclassowl] Preview: GoodRelations Service Update 2010-04-12