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.
Martin Hepp (UniBW)
martin.hepp at ebusiness-unibw.org
Tue Jul 28 17:10:15 CEST 2009
Dear all: Please keep in mind that there are two different GoodRelations properties that refer to quantities of items: a) gr:amountOfThisGood and b) gr:hasInventoryLevel gr:amountOfThisGood is attached to gr:TypeAndQuantity nodes and indicates the quantity of the item included in the particular offer. In 80% of the cases, this should be 1.0 ("1.0"^^xsd.float), because the price etc. is for one item. A value other than 1.0 is appropriate when you sell a bundle of items or use units of measurement other than "item/piece", e.g. selling "100 tiles" "500 g of butter", or "1 camera + 2 memory sticks" gr:hasInventoryLevel, on the contrary, can be used to indicate inventory levels. While gr:amountOfThisGood is an owl:DatatypeProperty, gr:hasInventoryLevel is an owl:ObjectProperty with a range of gr:QuantitativeValueFloat, because this allows for using arbitrary units and also specifying ranges. It can only be attached to instances of gr:ProductOrServicesSomeInstancesPlaceholder. So if you want to indicate inventory levels, use gr: hasInventoryLevel in combination with an instance of gr:QuantitativeValueFloat. *Example:* Assume you have 80 pieces of this controller card on stock. Then, use the following pattern: *_N3:_* foo:myProduct a gr:ProductOrServicesSomeInstancesPlaceholder; rdfs:label "Personal SCSI 16-bit SCSI Controller"@en ; gr:hasEAN_UCC-13 "00010363780"^^xsd:string ; gr:hasManufacturer <http://www.heppnetz.de/searchmonkey/product.html#heppcomputer> ; rdfs:comment "This low-cost, high-performance SCSI controller allows you to connect up to seven professional mass-storage devices to your computer."@en ; rdfs:seeAlso <http://www.heppnetz.de/searchmonkey/product.html>, <http://www.heppnetz.de/searchmonkey/pscsi.jpg> ; foaf:depiction <http://www.heppnetz.de/searchmonkey/pscsi.jpg> ; * gr:hasInventoryLevel [ a gr:QuantitativeValueFoat; gr:hasValueFloat "80"^^xsd:float ; gr:hasUnitOfMeasurement "C62"^^xsd:string ] ;* . RDFa: <div typeof="gr:ProductOrServicesSomeInstancesPlaceholder" about="#myProduct"> Product Name: <span property="rdfs:label">Personal SCSI 16-bit SCSI Controller</span> <br/>Description: <span property="rdfs:comment">This low-cost, high-performance SCSI controller allows you to connect up to seven professional mass-storage devices to your computer.</span><br/> EAN/UPC code: <span property="gr:hasEAN_UCC-13" datatype="xsd:string">00010363780</span><br/> <span rel="rdfs:seeAlso media:image foaf:depiction"> <img src="http://www.heppnetz.de/searchmonkey/pscsi.jpg" alt="Product Image"/> </span> * <span rel="gr:hasInventoryLevel> <span typeof="gr:QuantitativeValueFoat> <span property="gr:hasValueFloat" datatype="xsd:float">80</span> items on stock. <span property="hasUnitOfMeasurement" datatype="xsd:string" content="C62"/> </span> </span>* </div> Best Martin Hepp -- -------------------------------------------------------------- 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! ================================================================= Webcast: http://www.heppnetz.de/projects/goodrelations/webcast/ Recipe for Yahoo SearcMonkey: http://tr.im/rAbN Talk at the Semantic Technology Conference 2009: "Semantic Web-based E-Commerce: The GoodRelations Ontology" http://tinyurl.com/semtech-hepp Overview article on Semantic Universe: http://tinyurl.com/goodrelations-universe 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://tr.im/grcec09 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ebusiness-unibw.org/pipermail/goodrelations/attachments/20090728/6a970b75/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: martin_hepp.vcf Type: text/x-vcard Size: 308 bytes Desc: not available URL: <http://ebusiness-unibw.org/pipermail/goodrelations/attachments/20090728/6a970b75/attachment.vcf>