faqs-for-rdf - Revision history

Aaronpk: Replace with {{DISPLAYTITLE:}}

2020-07-18T16:22:37Z

Replace <entry-title> with {{DISPLAYTITLE:}}

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	~~<entry-title>~~Microformat FAQs relating to RDF~~</entry-title>~~		{{DISPLAYTITLE:Microformat FAQs relating to RDF}}

	== What are Microformats ==		== What are Microformats ==

WebOrganics: /* Who else is looking at RDF and microformats? */ adding self

2010-08-16T16:18:46Z

Who else is looking at RDF and microformats?: adding self

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	* [http://dannyayers.com Danny Ayers]		* [http://dannyayers.com Danny Ayers]
	* [http://buzzword.org.uk/cognition/ Toby Inkster]		* [http://buzzword.org.uk/cognition/ Toby Inkster]
			* [http://weborganics.co.uk/ Martin McEvoy]
	* ... please add yourself if you are as well!		* ... please add yourself if you are as well!


	== How do I get involved? ==		== How do I get involved? ==

	If you're using the Web, you already are involved! Next place to go is the [http://microformats.org/ microformats.org] site, and maybe sign up to some of the [http://microformats.org/discuss/ mailing lists] (in particular [http://microformats.org/mailman/listinfo/microformats-discuss/ microformats-discuss]). There's also an IRC channel [irc://irc.freenode.net#microformats #microformats on irc.freenode.net].		If you're using the Web, you already are involved! Next place to go is the [http://microformats.org/ microformats.org] site, and maybe sign up to some of the [http://microformats.org/discuss/ mailing lists] (in particular [http://microformats.org/mailman/listinfo/microformats-discuss/ microformats-discuss]). There's also an IRC channel [irc://irc.freenode.net#microformats #microformats on irc.freenode.net].

Tantek: entry-title, autotoc, broader than just fans, Why were microformats proposed, how real are microformats, attempt some more neutral/non-denigrating language, encourage participation, intrawiki links

2009-08-22T17:54:47Z

entry-title, autotoc, broader than just fans, Why were microformats proposed, how real are microformats, attempt some more neutral/non-denigrating language, encourage participation, intrawiki links

Show changes

AmeerDawood: /* What are Microformats? */

2008-11-17T23:54:16Z

What are Microformats?

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	== What are Microformats? ==		== What are Microformats? ==

	Microformats are a set of simple, open data formats built upon existing and widely adopted standards, in particular XHTML used ''correctly''. The processes, principles, and practices of the (open) microformats group are what make microformats "microformats", but they ~~centre~~ on using XHTML as designed, as a semantic language (though they can also be implemented on other XML formats, e.g. Atom).		Microformats are a set of simple, open data formats built upon existing and widely adopted standards, in particular XHTML used ''correctly''. The processes, principles, and practices of the (open) microformats group are what make microformats "microformats", but they center on using XHTML as designed, as a semantic language (though they can also be implemented on other XML formats, e.g. Atom).

	Although the microformats initiative puts human-readability first, with the help of the [http://www.w3.org/2004/01/rdxh/spec GRDDL] mechanism, it is possible to view microformats as domain-specific [http://www.w3.org/RDF/ RDF] serializations.		Although the microformats initiative puts human-readability first, with the help of the [http://www.w3.org/2004/01/rdxh/spec GRDDL] mechanism, it is possible to view microformats as domain-specific [http://www.w3.org/RDF/ RDF] serializations.

	See also: [http://microformats.org/about/ About Microformats]		See also: [http://microformats.org/about/ About Microformats]


	== For example..? ==		== For example..? ==

TobyInk: /* Isn't this just scraping? */

2008-03-20T18:49:22Z

Isn't this just scraping?

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	== Isn't this just scraping? ==		== Isn't this just scraping? ==

	No. Because microformats (should) include URI(s) for every profile used, and the profiles are clearly defined, the explicit data contained in a document can be extracted deterministically by parsing.		No. Because microformats (should) [[profile-uris\|include URI(s) for every profile used]], and the profiles are clearly defined, the explicit data contained in a document can be extracted deterministically by parsing.

	== Who else is looking at RDF and microformats? ==		== Who else is looking at RDF and microformats? ==

TobyInk: /* Who else is looking at RDF and microformats? */

2008-03-20T18:48:38Z

Who else is looking at RDF and microformats?

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	Lots of folks.		Lots of folks.
	Including: [http://www.w3.org/People/Connolly/ Dan Connolly], [http://internetalchemy.org/ Ian Davis], [http://sw.deri.org/~jbreslin/ John Breslin], [http://dannyayers.com Danny Ayers]....		Including: [http://www.w3.org/People/Connolly/ Dan Connolly], [http://internetalchemy.org/ Ian Davis], [http://sw.deri.org/~jbreslin/ John Breslin], [http://dannyayers.com Danny Ayers], [http://buzzword.org.uk/cognition/ Toby Inkster]...

	== How do I get involved? ==		== How do I get involved? ==

	If you're using the Web, you already are involved! Next place to go is the [http://microformats.org/ microformats.org] site, and maybe sign up to some of the [http://microformats.org/discuss/ mailing lists] (in particular [http://microformats.org/mailman/listinfo/microformats-discuss/ microformats-discuss]). There's also an IRC channel [irc://irc.freenode.net#microformats #microformats on irc.freenode.net].		If you're using the Web, you already are involved! Next place to go is the [http://microformats.org/ microformats.org] site, and maybe sign up to some of the [http://microformats.org/discuss/ mailing lists] (in particular [http://microformats.org/mailman/listinfo/microformats-discuss/ microformats-discuss]). There's also an IRC channel [irc://irc.freenode.net#microformats #microformats on irc.freenode.net].

AndyMabbett: What is GRDDL?

2007-09-27T20:09:42Z

What is GRDDL?

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	See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal], [http://www.w3.org/2006/07/SWD/wiki/hGRDDL_Example hGRDDL example]		See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal], [http://www.w3.org/2006/07/SWD/wiki/hGRDDL_Example hGRDDL example]


			== What is GRDDL? ==

			See [[grddl]].

	== Isn't there a clash between the semantics of XFN and FOAF? ==		== Isn't there a clash between the semantics of XFN and FOAF? ==

RyanKing: cleaning up formating (==== -> ==)

2007-05-12T00:09:14Z

cleaning up formating (==== -> ==)

MichaelHausenblas: added hGRDDL example

2007-03-04T19:18:22Z

added hGRDDL example

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	See [http://www.w3.org/TeamSubmission/grddl/ GRDDL] ([http://www.w3.org/2004/01/rdxh/spec older version])		See [http://www.w3.org/TeamSubmission/grddl/ GRDDL] ([http://www.w3.org/2004/01/rdxh/spec older version])

	See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal]		See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal], [http://www.w3.org/2006/07/SWD/wiki/hGRDDL_Example hGRDDL example]

	==== Isn't there a clash between the semantics of XFN and FOAF? ====		==== Isn't there a clash between the semantics of XFN and FOAF? ====

Tantek at 17:57, 30 May 2006

2006-05-30T17:57:23Z

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	==== So how do I get the data out? ====		==== So how do I get the data out? ====

	See [http://www.w3.org/TeamSubmission/grddl/ GRDDL]		See [http://www.w3.org/TeamSubmission/grddl/ GRDDL] ([http://www.w3.org/2004/01/rdxh/spec older version])

	See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal]		See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal]

← Older revision		Revision as of 00:09, 12 May 2007
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	= Microformat FAQs for RDF Fans =		<h1>Microformat FAQs for RDF Fans</h1>

	__TOC__		__TOC__

	==== What are Microformats? ====		== What are Microformats? ==

	Microformats are a set of simple, open data formats built upon existing and widely adopted standards, in particular XHTML used ''correctly''. The processes, principles, and practices of the (open) microformats group are what make microformats "microformats", but they centre on using XHTML as designed, as a semantic language (though they can also be implemented on other XML formats, e.g. Atom).		Microformats are a set of simple, open data formats built upon existing and widely adopted standards, in particular XHTML used ''correctly''. The processes, principles, and practices of the (open) microformats group are what make microformats "microformats", but they centre on using XHTML as designed, as a semantic language (though they can also be implemented on other XML formats, e.g. Atom).
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	==== For example..? ====		== For example..? ==

	This [http://microformats.org/wiki/hcard-example1-steps example] shows how the hCard microformat can be used to express vCard data.		This [http://microformats.org/wiki/hcard-example1-steps example] shows how the hCard microformat can be used to express vCard data.


	==== But I do RDF, why should I be interested? ====		== But I do RDF, why should I be interested? ==

	Microformats can lower the barrier to putting explicit data on the Web. This is entirely in line with the aims of the [http://www.w3.org/2001/sw/ Semantic Web].		Microformats can lower the barrier to putting explicit data on the Web. This is entirely in line with the aims of the [http://www.w3.org/2001/sw/ Semantic Web].
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	==== I have an RDF vocabulary I would like to use as a microformat. How do I do it? ====		== I have an RDF vocabulary I would like to use as a microformat. How do I do it? ==

	Before doing anything else, read the [http://microformats.org/wiki/process Process]. In general the microformat process is data-driven. It starts with material already being published, rather than an existing format, model or schema. You should also check the list of what has already been covered and the work-in-progress on the Wiki MainPage.		Before doing anything else, read the [http://microformats.org/wiki/process Process]. In general the microformat process is data-driven. It starts with material already being published, rather than an existing format, model or schema. You should also check the list of what has already been covered and the work-in-progress on the Wiki MainPage.
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	==== So, this is about using CSS class values to add semantics? ====		== So, this is about using CSS class values to add semantics? ==

	No. XHTML already expresses semantics, the '''HTML''' <code>class</code> attribute is just one of several mechanisms. From the [http://www.w3.org/TR/REC-html40/ HTML 4 spec]:		No. XHTML already expresses semantics, the '''HTML''' <code>class</code> attribute is just one of several mechanisms. From the [http://www.w3.org/TR/REC-html40/ HTML 4 spec]:
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	See also: [http://www.microformats.org/blog/2005/10/19/more-than-styling/ Class attributes are about more than styling]		See also: [http://www.microformats.org/blog/2005/10/19/more-than-styling/ Class attributes are about more than styling]

	==== What about namespaces for the attributes, should I use "xxx:term"? ====		== What about namespaces for the attributes, should I use "xxx:term"? ==

	In general, microformats rejects the use of explicit namespace prefixes in		In general, microformats rejects the use of explicit namespace prefixes in
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	==== But won't there be naming clashes? ====		== But won't there be naming clashes? ==

	The social aspect of the microformats [http://microformats.org/wiki/process Process] is such that conflicts ought to be prevented. The goal is to keep things as simple as possible by only focusing on '''existing''' well-defined problems, rather than trying to "boil the ocean" (solve the hypothetical general case).		The social aspect of the microformats [http://microformats.org/wiki/process Process] is such that conflicts ought to be prevented. The goal is to keep things as simple as possible by only focusing on '''existing''' well-defined problems, rather than trying to "boil the ocean" (solve the hypothetical general case).


	==== So how do I get the data out? ====		== So how do I get the data out? ==

	See [http://www.w3.org/TeamSubmission/grddl/ GRDDL] ([http://www.w3.org/2004/01/rdxh/spec older version])		See [http://www.w3.org/TeamSubmission/grddl/ GRDDL] ([http://www.w3.org/2004/01/rdxh/spec older version])
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	See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal], [http://www.w3.org/2006/07/SWD/wiki/hGRDDL_Example hGRDDL example]		See also: [http://www.w3.org/2006/05/08-htmltf-minutes.html#item03 hGRDDL proposal], [http://www.w3.org/2006/07/SWD/wiki/hGRDDL_Example hGRDDL example]

	==== Isn't there a clash between the semantics of XFN and FOAF? ====		== Isn't there a clash between the semantics of XFN and FOAF? ==

	The use of the page URI in XFN to identify a person appears to conflict with FOAF's by-reference approach, and to mess up the potential for saying things about the page itself. However in practice this isn't a problem. It's possible to parse the document as XFN (using e.g. [http://www.w3.org/2003/12/rdf-in-xhtml-xslts/grokXFN.xsl grokXFN.xsl]) to extract the person-related statements, e.g.		The use of the page URI in XFN to identify a person appears to conflict with FOAF's by-reference approach, and to mess up the potential for saying things about the page itself. However in practice this isn't a problem. It's possible to parse the document as XFN (using e.g. [http://www.w3.org/2003/12/rdf-in-xhtml-xslts/grokXFN.xsl grokXFN.xsl]) to extract the person-related statements, e.g.
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	==== What other work has been done with microformats and RDF? ====		== What other work has been done with microformats and RDF? ==

	* [http://www.w3.org/2003/g/td/xfn-workalike XFN on the GRDDL]		* [http://www.w3.org/2003/g/td/xfn-workalike XFN on the GRDDL]
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	==== Are there Schemas for Microformats? ====		== Are there Schemas for Microformats? ==

	Kind of. The primary specification is XHTML, but HTML4 provides a mechanism (the 'profile' attribute of the <head> element) to point to a meta data profile that defines properties and values. There is a (HTML-based) format specified for microformat profiles - [http://www.gmpg.org/xmdp/ XHTML Meta Data Profiles]. Note that XMDP's URLs for specifying terms is compatible with those used by RDF, with "#term" at the end.		Kind of. The primary specification is XHTML, but HTML4 provides a mechanism (the 'profile' attribute of the <head> element) to point to a meta data profile that defines properties and values. There is a (HTML-based) format specified for microformat profiles - [http://www.gmpg.org/xmdp/ XHTML Meta Data Profiles]. Note that XMDP's URLs for specifying terms is compatible with those used by RDF, with "#term" at the end.


	==== What RDF vocabularies (and XSLT) corresponding to microformats is available? ====		== What RDF vocabularies (and XSLT) corresponding to microformats is available? ==

	See [http://esw.w3.org/topic/MicroModels MicroModels] (on ESW Wiki)		See [http://esw.w3.org/topic/MicroModels MicroModels] (on ESW Wiki)


	==== Isn't this just scraping? ====		== Isn't this just scraping? ==

	No. Because microformats (should) include URI(s) for every profile used, and the profiles are clearly defined, the explicit data contained in a document can be extracted deterministically by parsing.		No. Because microformats (should) include URI(s) for every profile used, and the profiles are clearly defined, the explicit data contained in a document can be extracted deterministically by parsing.

			== Who else is looking at RDF and microformats? ==
	==== Who else is looking at RDF and microformats? ====

	Lots of folks.		Lots of folks.
	Including: [http://www.w3.org/People/Connolly/ Dan Connolly], [http://internetalchemy.org/ Ian Davis], [http://sw.deri.org/~jbreslin/ John Breslin], [http://dannyayers.com Danny Ayers]....		Including: [http://www.w3.org/People/Connolly/ Dan Connolly], [http://internetalchemy.org/ Ian Davis], [http://sw.deri.org/~jbreslin/ John Breslin], [http://dannyayers.com Danny Ayers]....

	==== How do I get involved? ====		== How do I get involved? ==

	If you're using the Web, you already are involved! Next place to go is the [http://microformats.org/ microformats.org] site, and maybe sign up to some of the [http://microformats.org/discuss/ mailing lists] (in particular [http://microformats.org/mailman/listinfo/microformats-discuss/ microformats-discuss]). There's also an IRC channel [irc://irc.freenode.net#microformats #microformats on irc.freenode.net].		If you're using the Web, you already are involved! Next place to go is the [http://microformats.org/ microformats.org] site, and maybe sign up to some of the [http://microformats.org/discuss/ mailing lists] (in particular [http://microformats.org/mailman/listinfo/microformats-discuss/ microformats-discuss]). There's also an IRC channel [irc://irc.freenode.net#microformats #microformats on irc.freenode.net].