Hi David, Daniel O'Connor wrote:
http://goodrelations.doconnor.user.dev.freebaseapps.com/Freebase data being rendered as Good Relations ("Or Barbie and Ken's Semantic Web Playset")
thanks for the initiative - very valuable! >What's the best way to validate this / check it would show up in Yahoo >search results? You can use http://developer.search.yahoo.com/help/objects/product A few comments as for the data:What you find in Freebase are likely gr:ProductOrServiceModel instances, not offers. So you should create instances of gr:ProductOrServiceModel for each "Product" in Freebase first.
Those define the properties of the model - e.g. that what you would usually find in a manufacturer's datasheet:
- description - image - EAN/UPC - weight etc.Note that the price is not a feature of the product model, but a property of one specific offer to sell such objects, i.e. a gr:Offering. (I assume there will be way more product models in Freebase than those which you find currently, and it could be that querying for a price is the reason.)
If you have a business entity and a price, you could also add a gr:Offering etc. as you are doing right now. But note that Mattel will often not sell individual barbie dolls to end users at the suggested retail price. So the offer must be constrained to resellers. And then you don't have price...
This is why I would suggest to limit the export to the model data. Those can be linked in the LOD cloud to actual offers, e.g. from BestBuy or from eBay (via OpenLink's new eBay sponger).
So the basic structure should be
a) Model data ("Datasheets")
foo:Barbie1234 a gr:ProductOrServiceModel;
rdfs:label "blabla"@en;
rdfs:comment "blabla"@en;
gr:hasEAN_UCC-13 "1234567890123"^^xsd:string;
gr:hasManufacturer foo:Mattel.
#etc.
foo:Mattel a gr:BusinessEntity.
gr:legalName "Mattel Toys Inc."@en.
#etc.
You can add the statement that Mattel also offers individuals of that type:
foo:Offer a gr:Offering;
gr:includes foo:SomeBarbie1234s.
foo:Mattel gr:offers foo:Offer.
foo:SomeBarbie1234s a gr:ProductOrServicesSomeInstancesPlaceholder;
rdfs:label "blabla"@en;
rdfs:comment "blabla"@en;
gr:hasEAN_UCC-13 "1234567890123"^^xsd:string;
gr:hasMakeAndModel foo:Barbie1234.
#etc.
But then you should not attach a UnitPriceSpecification.
For your reference, I add a list of properties for gr:Offering,
gr:ProductOrServiceModel, and gr:ProductOrServicesSomeInstancesPlaceholder.
Also, I recommend the UML diagram at http://www.ebusiness-unibw.org/wiki/File:Goodrelations-UML-2009-07-18.pdf gr:Offering owl:includes owl:hasBusinessFunction owl:availableDeliveryMethods owl:eligibleCustomerTypes owl:includesObject owl:availableAtOrFrom owl:hasPriceSpecification owl:hasWarrantyPromise owl:acceptedPaymentMethods owl:eligibleRegions owl:hasEAN_UCC-13 owl:hasGTIN-14 owl:hasStockKeepingUnit owl:validFrom owl:validThrough gr:ProductOrServiceModel specific: none inherited: owl:isAccessoryOrSparePartFor owl:qualitativeProductOrServiceProperty owl:isSimilarTo owl:isConsumableFor owl:quantitativeProductOrServiceProperty owl:hasManufacturer owl:datatypeProductOrServiceProperty owl:hasEAN_UCC-13 owl:hasGTIN-14 owl:hasStockKeepingUnit gr:ProductOrServicesSomeInstancesPlaceholder specific: owl:hasInventoryLevel owl:hasMakeAndModel inherited: owl:isAccessoryOrSparePartFor owl:qualitativeProductOrServiceProperty owl:isSimilarTo owl:isConsumableFor owl:quantitativeProductOrServiceProperty owl:hasManufacturer owl:datatypeProductOrServiceProperty owl:hasEAN_UCC-13 owl:hasGTIN-14 owl:hasStockKeepingUnit Best Martin -- -------------------------------------------------------------- martin hepp e-business & web science research group universitaet der bundeswehr muenchen e-mail: h...@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! ================================================================= Webcast: http://www.heppnetz.de/projects/goodrelations/webcast/ Recipe for Yahoo SearchMonkey: http://www.ebusiness-unibw.org/wiki/GoodRelations_and_Yahoo_SearchMonkeyTalk 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 Project page: http://purl.org/goodrelations/ Resources for developers: http://www.ebusiness-unibw.org/wiki/GoodRelations 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 http://www.ebusiness-unibw.org/wiki/Web_of_Data_for_E-Commerce_Tutorial_IEEE_CEC%2709
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