Martin makes an excellent point, easily lost when one tries to grok the totality of GoodRelations ontology.<br><br>In short, the simplicity of the other products can be had by using a subset of GoodRelations so there is nothing lost. There is much gained because it is extensible.<br>
<br>IDEA: create documentation and tools for one or more simple subsets of GR, analogous to OWL-Lite, OWL-DL, and OWL-Full.<br><br><br>Michael <br><br><div class="gmail_quote">On Mon, May 3, 2010 at 3:00 AM, <span dir="ltr"><<a href="mailto:goodrelations-request@ebusiness-unibw.org">goodrelations-request@ebusiness-unibw.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Send goodrelations mailing list submissions to<br>
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or, via email, send a message with subject or body 'help' to<br>
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<br>
<br>
Today's Topics:<br>
<br>
1. GoodRelations vs. Google RDFa vs. Open Graph vs.<br>
hProduct/hListing: Using GoodRelations in 10 Triples<br>
(Martin Hepp (UniBW))<br>
2. GoodRelations vs. Google RDFa vs. Open Graph vs.<br>
hProduct/hListing: Using GoodRelations in 10 Triples<br>
(Martin Hepp (UniBW))<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Mon, 03 May 2010 10:38:04 +0200<br>
From: "Martin Hepp (UniBW)" <<a href="mailto:martin.hepp@ebusiness-unibw.org">martin.hepp@ebusiness-unibw.org</a>><br>
Subject: [goodrelations] GoodRelations vs. Google RDFa vs. Open Graph<br>
vs. hProduct/hListing: Using GoodRelations in 10 Triples<br>
To: goodrelations <<a href="mailto:goodrelations@ebusiness-unibw.org">goodrelations@ebusiness-unibw.org</a>><br>
Message-ID: <<a href="mailto:4BDE8B6C.3040402@ebusiness-unibw.org">4BDE8B6C.3040402@ebusiness-unibw.org</a>><br>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed<br>
<br>
Dear all:<br>
<br>
Some people think that the GoodRelations ontology for e-commerce<br>
(<a href="http://purl.org/goodrelations/" target="_blank">http://purl.org/goodrelations/</a>) is powerful, but complex.<br>
I think it is important for everybody in the community to know that<br>
GoodRelations can be as simple (or simpler) than any more lightweight<br>
approach for product markup, as long as you compare the same level of<br>
granularity.<br>
<br>
Below, please find an example of offering a car for sales in just ten<br>
(!) triples.<br>
<br>
Of course, you can do more with GoodRelations than just encoding a price<br>
and carrying the semantics of the product itself in a string.<br>
<br>
The important message in here is that simple chunks of data are as<br>
simple in GoodRelations as they are in hProduct/hListing microformats,<br>
Google's RDFa vocabulary, or the Open Graph product markup.<br>
<br>
The key difference is that GoodRelations has a much more extensible and,<br>
in my biased ;-) judgement: cleaner, conceptual model so that IF you<br>
have more granular data available, THEN you can expose it, and make your<br>
products more findable on the Web.<br>
<br>
For example, GoodRelations distinguishes between products and product<br>
models / datasheets. That allows for powerful linking between individual<br>
items and rich technical specifications from the manufacturer's page.<br>
<br>
The Open Graph approach seems to use a plain "topic" semantics, which<br>
mixes items, datasheets, and offers.<br>
<br>
Please keep that in mind and spread the word.<br>
<br>
Here is the markup.<br>
<br>
Best wishes<br>
<br>
Martin<br>
<br>
<br>
Turtle/N3:<br>
=========<br>
@prefix foo: <<a href="http://www.example.com/xyz#" target="_blank">http://www.example.com/xyz#</a>> .<br>
@prefix gr: <<a href="http://purl.org/goodrelations/v1#" target="_blank">http://purl.org/goodrelations/v1#</a>> .<br>
@prefix xsd: <<a href="http://www.w3.org/2001/XMLSchema#" target="_blank">http://www.w3.org/2001/XMLSchema#</a>> .<br>
@prefix rdfs: <<a href="http://www.w3.org/2000/01/rdf-schema#" target="_blank">http://www.w3.org/2000/01/rdf-schema#</a>> .<br>
<br>
foo:company a gr:BusinessEntity;<br>
gr:legalName "Hepp Space Ventures Inc.";<br>
gr:offers foo:offering.<br>
<br>
foo:offering a gr:Offering;<br>
rdfs:label "Volkswagen Station Wagon, 4WD, 400 $"@en;<br>
rdfs:description "I sell my old Volkswagen Station Wagon, 4WD, for<br>
400 $"@en;<br>
gr:hasPriceSpecification<br>
[ a gr:UnitPriceSpecification;<br>
gr:hasCurrencyValue "400"^^xsd:string;<br>
gr:hasCurrency "USD"^^xsd:string. ].<br>
<br>
RDFa:<br>
====<br>
<div xmlns:rdf="<a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#" target="_blank">http://www.w3.org/1999/02/22-rdf-syntax-ns#</a>"<br>
xmlns:rdfs="<a href="http://www.w3.org/2000/01/rdf-schema#" target="_blank">http://www.w3.org/2000/01/rdf-schema#</a>"<br>
xmlns="<a href="http://www.w3.org/1999/xhtml" target="_blank">http://www.w3.org/1999/xhtml</a>"<br>
xmlns:gr="<a href="http://purl.org/goodrelations/v1#" target="_blank">http://purl.org/goodrelations/v1#</a>"<br>
xmlns:foo="<a href="http://www.example.com/xyz#" target="_blank">http://www.example.com/xyz#</a>"<br>
xmlns:xsd="<a href="http://www.w3.org/2001/XMLSchema#" target="_blank">http://www.w3.org/2001/XMLSchema#</a>"><br>
<div about="<a href="http://www.example.com/xyz#company" target="_blank">http://www.example.com/xyz#company</a>" typeof="gr:BusinessEntity"><br>
<div property="gr:legalName" content="Hepp Space Ventures Inc."></div><br>
<div rel="gr:offers"><br>
<div about="<a href="http://www.example.com/xyz#offering" target="_blank">http://www.example.com/xyz#offering</a>" typeof="gr:Offering"><br>
<div property="rdfs:label" content="Volkswagen Station Wagon, 4WD, 400<br>
$" xml:lang="en"></div><br>
<div property="rdfs:description" content="I sell my old Volkswagen<br>
Station Wagon, 4WD, for 400 $" xml:lang="en"></div><br>
<div rel="gr:hasPriceSpecification"><br>
<div typeof="gr:UnitPriceSpecification"><br>
<div property="gr:hasCurrency" content="USD" datatype="xsd:string"></div><br>
<div property="gr:hasCurrencyValue" content="400"<br>
datatype="xsd:string"></div><br>
</div><br>
</div><br>
</div><br>
</div><br>
</div><br>
</div><br>
<br>
RDF/XML:<br>
=======<br>
<br>
<?xml version="1.0"?><br>
<rdf:RDF xmlns:gr="<a href="http://purl.org/goodrelations/v1#" target="_blank">http://purl.org/goodrelations/v1#</a>"<br>
xmlns:rdf="<a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#" target="_blank">http://www.w3.org/1999/02/22-rdf-syntax-ns#</a>"<br>
xmlns:foo="<a href="http://www.example.com/xyz#" target="_blank">http://www.example.com/xyz#</a>"<br>
xmlns:xsd="<a href="http://www.w3.org/2001/XMLSchema#" target="_blank">http://www.w3.org/2001/XMLSchema#</a>"<br>
xmlns:rdfs="<a href="http://www.w3.org/2000/01/rdf-schema#" target="_blank">http://www.w3.org/2000/01/rdf-schema#</a>"><br>
<gr:BusinessEntity rdf:about="<a href="http://www.example.com/xyz#company" target="_blank">http://www.example.com/xyz#company</a>"><br>
<gr:legalName>Hepp Space Ventures Inc.</gr:legalName><br>
<gr:offers><br>
<gr:Offering rdf:about="<a href="http://www.example.com/xyz#offering" target="_blank">http://www.example.com/xyz#offering</a>"><br>
<rdfs:label xml:lang="en">Volkswagen Station Wagon, 4WD, 400 $</rdfs:label><br>
<rdfs:description xml:lang="en">I sell my old Volkswagen Station Wagon,<br>
4WD, for 400 $</rdfs:description><br>
<gr:hasPriceSpecification><br>
<gr:UnitPriceSpecification><br>
<gr:hasCurrencyValue<br>
rdf:datatype="<a href="http://www.w3.org/2001/XMLSchema#string" target="_blank">http://www.w3.org/2001/XMLSchema#string</a>">400</gr:hasCurrencyValue><br>
<gr:hasCurrency<br>
rdf:datatype="<a href="http://www.w3.org/2001/XMLSchema#string" target="_blank">http://www.w3.org/2001/XMLSchema#string</a>">USD</gr:hasCurrency><br>
</gr:UnitPriceSpecification><br>
</gr:hasPriceSpecification><br>
</gr:Offering><br>
</gr:offers><br>
</gr:BusinessEntity><br>
</rdf:RDF><br>
<br>
<br>
<br>
<br>
<br>
<br>
--<br>
--------------------------------------------------------------<br>
martin hepp<br>
e-business& web science research group<br>
universitaet der bundeswehr muenchen<br>
<br>
e-mail: <a href="mailto:hepp@ebusiness-unibw.org">hepp@ebusiness-unibw.org</a><br>
phone: +49-(0)89-6004-4217<br>
fax: +49-(0)89-6004-4620<br>
www: <a href="http://www.unibw.de/ebusiness/" target="_blank">http://www.unibw.de/ebusiness/</a> (group)<br>
<a href="http://www.heppnetz.de/" target="_blank">http://www.heppnetz.de/</a> (personal)<br>
skype: mfhepp<br>
twitter: mfhepp<br>
<br>
Check out GoodRelations for E-Commerce on the Web of Linked Data!<br>
=================================================================<br>
<br>
Project page:<br>
<a href="http://purl.org/goodrelations/" target="_blank">http://purl.org/goodrelations/</a><br>
<br>
Resources for developers:<br>
<a href="http://www.ebusiness-unibw.org/wiki/GoodRelations" target="_blank">http://www.ebusiness-unibw.org/wiki/GoodRelations</a><br>
<br>
Webcasts:<br>
Overview - <a href="http://www.heppnetz.de/projects/goodrelations/webcast/%0AHow-to" target="_blank">http://www.heppnetz.de/projects/goodrelations/webcast/<br>
How-to</a> - <a href="http://vimeo.com/7583816" target="_blank">http://vimeo.com/7583816</a><br>
<br>
Recipe for Yahoo SearchMonkey:<br>
<a href="http://www.ebusiness-unibw.org/wiki/GoodRelations_and_Yahoo_SearchMonkey" target="_blank">http://www.ebusiness-unibw.org/wiki/GoodRelations_and_Yahoo_SearchMonkey</a><br>
<br>
Talk at the Semantic Technology Conference 2009:<br>
"Semantic Web-based E-Commerce: The GoodRelations Ontology"<br>
<a href="http://www.slideshare.net/mhepp/semantic-webbased-ecommerce-the-goodrelations-ontology-1535287" target="_blank">http://www.slideshare.net/mhepp/semantic-webbased-ecommerce-the-goodrelations-ontology-1535287</a><br>
<br>
Overview article on Semantic Universe:<br>
<a href="http://www.semanticuniverse.com/articles-semantic-web-based-e-commerce-webmasters-get-ready.html" target="_blank">http://www.semanticuniverse.com/articles-semantic-web-based-e-commerce-webmasters-get-ready.html</a><br>
<br>
Tutorial materials:<br>
ISWC 2009 Tutorial: The Web of Data for E-Commerce in Brief: A Hands-on Introduction to the GoodRelations Ontology, RDFa, and Yahoo! SearchMonkey<br>
<a href="http://www.ebusiness-unibw.org/wiki/Web_of_Data_for_E-Commerce_Tutorial_ISWC2009" target="_blank">http://www.ebusiness-unibw.org/wiki/Web_of_Data_for_E-Commerce_Tutorial_ISWC2009</a><br>
<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Mon, 03 May 2010 10:54:13 +0200<br>
From: "Martin Hepp (UniBW)" <<a href="mailto:martin.hepp@ebusiness-unibw.org">martin.hepp@ebusiness-unibw.org</a>><br>
Subject: [goodrelations] GoodRelations vs. Google RDFa vs. Open Graph<br>
vs. hProduct/hListing: Using GoodRelations in 10 Triples<br>
To: goodrelations <<a href="mailto:goodrelations@ebusiness-unibw.org">goodrelations@ebusiness-unibw.org</a>><br>
Message-ID: <<a href="mailto:4BDE8F35.4040706@ebusiness-unibw.org">4BDE8F35.4040706@ebusiness-unibw.org</a>><br>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed<br>
<br>
Apologies - There were a few minor bugs in the initial markup:<br>
- I forgot the business function.<br>
- The datatype for the price was xsd:string instead of xsd:float.<br>
- The legal name had no language tag.<br>
<br>
Below are the correct examples.<br>
<br>
Best wishes<br>
<br>
Martin Hepp<br>
<br>
Turtle<br>
======<br>
@prefix foo: <<a href="http://www.example.com/xyz#" target="_blank">http://www.example.com/xyz#</a>> .<br>
@prefix gr: <<a href="http://purl.org/goodrelations/v1#" target="_blank">http://purl.org/goodrelations/v1#</a>> .<br>
@prefix xsd: <<a href="http://www.w3.org/2001/XMLSchema#" target="_blank">http://www.w3.org/2001/XMLSchema#</a>> .<br>
@prefix rdfs: <<a href="http://www.w3.org/2000/01/rdf-schema#" target="_blank">http://www.w3.org/2000/01/rdf-schema#</a>> .<br>
<br>
foo:company a gr:BusinessEntity;<br>
gr:legalName "Hepp Space Ventures Inc."@en;<br>
gr:offers foo:offering.<br>
<br>
foo:offering a gr:Offering;<br>
rdfs:label "Volkswagen Station Wagon, 4WD, 400 $"@en;<br>
rdfs:description "I sell my old Volkswagen Station Wagon, 4WD, for 400<br>
$"@en;<br>
gr:hasBusinessFunction gr:Sell;<br>
gr:hasPriceSpecification<br>
[ a gr:UnitPriceSpecification;<br>
gr:hasCurrencyValue "400"^^xsd:float;<br>
gr:hasCurrency "USD"^^xsd:string. ].<br>
<br>
RDFa:<br>
====<br>
<div xmlns:rdf="<a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#" target="_blank">http://www.w3.org/1999/02/22-rdf-syntax-ns#</a>"<br>
xmlns:rdfs="<a href="http://www.w3.org/2000/01/rdf-schema#" target="_blank">http://www.w3.org/2000/01/rdf-schema#</a>"<br>
xmlns="<a href="http://www.w3.org/1999/xhtml" target="_blank">http://www.w3.org/1999/xhtml</a>"<br>
xmlns:gr="<a href="http://purl.org/goodrelations/v1#" target="_blank">http://purl.org/goodrelations/v1#</a>"<br>
xmlns:foo="<a href="http://www.example.com/xyz#" target="_blank">http://www.example.com/xyz#</a>"<br>
xmlns:xsd="<a href="http://www.w3.org/2001/XMLSchema#" target="_blank">http://www.w3.org/2001/XMLSchema#</a>"><br>
<div about="<a href="http://www.example.com/xyz#company" target="_blank">http://www.example.com/xyz#company</a>"<br>
typeof="gr:BusinessEntity"><br>
<div property="gr:legalName" content="Hepp Space Ventures Inc."<br>
xml:lang="en"></div><br>
<div rel="gr:offers"><br>
<div about="<a href="http://www.example.com/xyz#offering" target="_blank">http://www.example.com/xyz#offering</a>" typeof="gr:Offering"><br>
<div property="rdfs:description" content="I sell my old<br>
Volkswagen Station Wagon, 4WD, for 400 $" xml:lang="en"></div><br>
<div rel="gr:hasBusinessFunction"<br>
resource="<a href="http://purl.org/goodrelations/v1#Sell" target="_blank">http://purl.org/goodrelations/v1#Sell</a>"></div><br>
<div rel="gr:hasPriceSpecification"><br>
<div typeof="gr:UnitPriceSpecification"><br>
<div property="gr:hasCurrency" content="USD"<br>
datatype="xsd:string"></div><br>
<div property="gr:hasCurrencyValue" content="400"<br>
datatype="xsd:float"></div><br>
</div><br>
</div><br>
<div property="rdfs:label" content="Volkswagen Station Wagon,<br>
4WD, 400 $" xml:lang="en"></div><br>
</div><br>
</div><br>
</div><br>
</div><br>
<br>
RDF/XML:<br>
=======<br>
<?xml version="1.0"?><br>
<rdf:RDF xmlns:gr="<a href="http://purl.org/goodrelations/v1#" target="_blank">http://purl.org/goodrelations/v1#</a>"<br>
xmlns:rdf="<a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#" target="_blank">http://www.w3.org/1999/02/22-rdf-syntax-ns#</a>"<br>
xmlns:foo="<a href="http://www.example.com/xyz#" target="_blank">http://www.example.com/xyz#</a>"<br>
xmlns:xsd="<a href="http://www.w3.org/2001/XMLSchema#" target="_blank">http://www.w3.org/2001/XMLSchema#</a>"<br>
xmlns:rdfs="<a href="http://www.w3.org/2000/01/rdf-schema#" target="_blank">http://www.w3.org/2000/01/rdf-schema#</a>"><br>
<gr:BusinessEntity rdf:about="<a href="http://www.example.com/xyz#company" target="_blank">http://www.example.com/xyz#company</a>"><br>
<gr:legalName xml:lang="en">Hepp Space Ventures Inc.</gr:legalName><br>
<gr:offers><br>
<gr:Offering rdf:about="<a href="http://www.example.com/xyz#offering" target="_blank">http://www.example.com/xyz#offering</a>"><br>
<rdfs:label xml:lang="en">Volkswagen Station Wagon, 4WD, 400<br>
$</rdfs:label><br>
<rdfs:description xml:lang="en">I sell my old Volkswagen<br>
Station Wagon, 4WD, for 400 $</rdfs:description><br>
<gr:hasBusinessFunction<br>
rdf:resource="<a href="http://purl.org/goodrelations/v1#Sell" target="_blank">http://purl.org/goodrelations/v1#Sell</a>" /><br>
<gr:hasPriceSpecification><br>
<gr:UnitPriceSpecification><br>
<gr:hasCurrencyValue<br>
rdf:datatype="<a href="http://www.w3.org/2001/XMLSchema#float" target="_blank">http://www.w3.org/2001/XMLSchema#float</a>">400</gr:hasCurrencyValue><br>
<gr:hasCurrency<br>
rdf:datatype="<a href="http://www.w3.org/2001/XMLSchema#string" target="_blank">http://www.w3.org/2001/XMLSchema#string</a>">USD</gr:hasCurrency><br>
</gr:UnitPriceSpecification><br>
</gr:hasPriceSpecification><br>
</gr:Offering><br>
</gr:offers><br>
</gr:BusinessEntity><br>
</rdf:RDF><br>
<br>
<br>
<br>
<br>
<br>
Dear all:<br>
<br>
Some people think that the GoodRelations ontology for e-commerce<br>
(<a href="http://purl.org/goodrelations/" target="_blank">http://purl.org/goodrelations/</a>) is powerful, but complex.<br>
I think it is important for everybody in the community to know that<br>
GoodRelations can be as simple (or simpler) than any more lightweight<br>
approach for product markup, as long as you compare the same level of<br>
granularity.<br>
<br>
Below, please find an example of offering a car for sales in just ten<br>
(!) triples.<br>
<br>
Of course, you can do more with GoodRelations than just encoding a price<br>
and carrying the semantics of the product itself in a string.<br>
<br>
The important message in here is that simple chunks of data are as<br>
simple in GoodRelations as they are in hProduct/hListing microformats,<br>
Google's RDFa vocabulary, or the Open Graph product markup.<br>
<br>
The key difference is that GoodRelations has a much more extensible and,<br>
in my biased ;-) judgement: cleaner, conceptual model so that IF you<br>
have more granular data available, THEN you can expose it, and make your<br>
products more findable on the Web.<br>
<br>
For example, GoodRelations distinguishes between products and product<br>
models / datasheets. That allows for powerful linking between individual<br>
items and rich technical specifications from the manufacturer's page.<br>
<br>
The Open Graph approach seems to use a plain "topic" semantics, which<br>
mixes items, datasheets, and offers.<br>
<br>
Please keep that in mind and spread the word.<br>
<br>
Here is the markup.<br>
<br>
Best wishes<br>
<br>
Martin<br>
<br>
<br>
<br>
<br>
<br>
--<br>
--------------------------------------------------------------<br>
martin hepp<br>
e-business& web science research group<br>
universitaet der bundeswehr muenchen<br>
<br>
e-mail: <a href="mailto:hepp@ebusiness-unibw.org">hepp@ebusiness-unibw.org</a><br>
phone: +49-(0)89-6004-4217<br>
fax: +49-(0)89-6004-4620<br>
www: <a href="http://www.unibw.de/ebusiness/" target="_blank">http://www.unibw.de/ebusiness/</a> (group)<br>
<a href="http://www.heppnetz.de/" target="_blank">http://www.heppnetz.de/</a> (personal)<br>
skype: mfhepp<br>
twitter: mfhepp<br>
<br>
Check out GoodRelations for E-Commerce on the Web of Linked Data!<br>
=================================================================<br>
<br>
Project page:<br>
<a href="http://purl.org/goodrelations/" target="_blank">http://purl.org/goodrelations/</a><br>
<br>
Resources for developers:<br>
<a href="http://www.ebusiness-unibw.org/wiki/GoodRelations" target="_blank">http://www.ebusiness-unibw.org/wiki/GoodRelations</a><br>
<br>
Webcasts:<br>
Overview - <a href="http://www.heppnetz.de/projects/goodrelations/webcast/%0AHow-to" target="_blank">http://www.heppnetz.de/projects/goodrelations/webcast/<br>
How-to</a> - <a href="http://vimeo.com/7583816" target="_blank">http://vimeo.com/7583816</a><br>
<br>
Recipe for Yahoo SearchMonkey:<br>
<a href="http://www.ebusiness-unibw.org/wiki/GoodRelations_and_Yahoo_SearchMonkey" target="_blank">http://www.ebusiness-unibw.org/wiki/GoodRelations_and_Yahoo_SearchMonkey</a><br>
<br>
Talk at the Semantic Technology Conference 2009:<br>
"Semantic Web-based E-Commerce: The GoodRelations Ontology"<br>
<a href="http://www.slideshare.net/mhepp/semantic-webbased-ecommerce-the-goodrelations-ontology-1535287" target="_blank">http://www.slideshare.net/mhepp/semantic-webbased-ecommerce-the-goodrelations-ontology-1535287</a><br>
<br>
Overview article on Semantic Universe:<br>
<a href="http://www.semanticuniverse.com/articles-semantic-web-based-e-commerce-webmasters-get-ready.html" target="_blank">http://www.semanticuniverse.com/articles-semantic-web-based-e-commerce-webmasters-get-ready.html</a><br>
<br>
Tutorial materials:<br>
ISWC 2009 Tutorial: The Web of Data for E-Commerce in Brief: A Hands-on<br>
Introduction to the GoodRelations Ontology, RDFa, and Yahoo! SearchMonkey<br>
<a href="http://www.ebusiness-unibw.org/wiki/Web_of_Data_for_E-Commerce_Tutorial_ISWC2009" target="_blank">http://www.ebusiness-unibw.org/wiki/Web_of_Data_for_E-Commerce_Tutorial_ISWC2009</a><br>
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End of goodrelations Digest, Vol 21, Issue 1<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Michael Uschold, PhD<br> LinkedIn: <a href="http://tr.im/limfu">http://tr.im/limfu</a><br> Skype: UscholdM<br>