Re: HTML Data TF status

2011/11/16 Richard Ishida <ishida@w3.org>

> FYI.  Note, in particular, that there is an outstanding bug on language
> handling in microdata.


Only as a piece of information: schema.org (which is an application of
microdata and RDFa, in the sense of
http://www.w3.org/Bugs/Public/show_bug.cgi?id=14470#c1 ), allows for a
property inLanguage, see e.g. http://www.schema.org/CreativeWork
The language of the content. please use one of the language codes from the IETF
BCP 47 standard <http://tools.ietf.org/html/bcp47>
This raises further questions like: if there is the isLanguage property
present, and language information from the DOM layer, what would take
precedence?

Felix


>  I raised a tracker issue for that under html5-mail product.
>
> RI
>
>
> -------- Original Message --------
> Subject: HTML Data TF status
> Resent-Date: Tue, 15 Nov 2011 19:13:04 +0000, Tue, 15 Nov 2011 19:13:36
> +0000
> Resent-From: Philippe Le Hegaret <plh@w3.org>
> Resent-To: public-html <public-html@w3.org>
> Date: Tue, 15 Nov 2011 11:13:01 -0800
> From: Jeni Tennison <jeni@jenitennison.com>
> Organization: World Wide Web Consortium
> To: Paul Cotton <Paul.Cotton@microsoft.com>, "Philippe Le Hegaret (
> plh@w3.org)" <plh@w3.org>
>
> Hi,
>
> Paul Cotton asked me to put together a note for the HTML WG on the status
> of the HTML Data TF.
>
> The Task Force was put together by W3C in response to the TAG's note [1]
> about inconsistencies between microdata [2] and HTML+RDFa 1.1 [3]. Our
> goals are to perform a technical analysis of the relationships between
> microdata, RDFa and microformats with the goals of:
>
> * raising bugs where incompatibilities could be reduced through spec
> changes
> * documenting guidance for publishers and consumers of these formats
> * drafting mappings that help consumers merge data from different formats
>
> Discussions are taking place on the public-html-data-tf@w3.org mailing
> list [4] and the products of the Task Force are currently being drafted
> within the wiki [5]. Of particular note is the development of an editor's
> draft for a mapping from microdata to RDF [6].
>
> Several of the issues that led to the TAG's comments were addressed or
> raised as bugs/issues in the time between the TAG's comments being raised
> and the formation of the Task Force. For example, the mapping from
> microdata to RDF in the microdata specification was removed. RDFa 1.1 Lite
> (now an editor's draft [7]) was also announced during this period.
>
> There are two outstanding HTML bugs on microdata and HTML-RDFa of interest
> to the Task Force, on:
>
> * language handling in microdata [8]
> * allowing <link> and <meta> elements in flow content when they have RDFa
> attributes [9]
> * support for <time> and <data> in HTML+RDFa [10]
>
> as well as a number of issues on RDFa-Core that are rapidly being resolved.
>
> We had some discussion with Hixie about support for multiple types from
> different vocabularies in microdata, but do not intend to raise a bug on
> this.
>
> I anticipate there may be other issues raised, specifically on:
>
> * mismatches in the resolution of URLs in HTML5 and IRIs in RDF, and its
> impact on RDFa processing [11]
> * mismatches in the set of link relations supported by HTML5 and
> microformats compared to RDFa [12]
> * lack of support for representing structured HTML values in microdata [13]
>
> The Task Force will be wrapped up by the end of the year. It may be that
> there are outstanding bugs when that happens, and it is likely that there
> will continue to be work to do to keep the guidance relevant if (as is
> likely) HTML5/microdata/RDFa change past that point. Part of the wrapping
> up of the Task Force will be recommending the appropriate groups to which
> to hand off that work.
>
> Cheers,
>
> Jeni
>
> [1] http://lists.w3.org/Archives/**Public/public-html/2011Jun/**0366.html<http://lists.w3.org/Archives/Public/public-html/2011Jun/0366.html>
> [2] http://dev.w3.org/html5/md/
> [3] http://dev.w3.org/html5/rdfa/
> [4] http://lists.w3.org/Archives/**Public/public-html-data-tf/<http://lists.w3.org/Archives/Public/public-html-data-tf/>
> [5] http://www.w3.org/wiki/Html-**data-tf<http://www.w3.org/wiki/Html-data-tf>
> [6] https://dvcs.w3.org/hg/**htmldata/raw-file/default/**
> microdata-rdf/index.html<https://dvcs.w3.org/hg/htmldata/raw-file/default/microdata-rdf/index.html>
> [7] http://www.w3.org/2010/02/**rdfa/sources/rdfa-lite/<http://www.w3.org/2010/02/rdfa/sources/rdfa-lite/>
> [8] http://www.w3.org/Bugs/Public/**show_bug.cgi?id=14470<http://www.w3.org/Bugs/Public/show_bug.cgi?id=14470>
> [9] http://www.w3.org/Bugs/Public/**show_bug.cgi?id=14114<http://www.w3.org/Bugs/Public/show_bug.cgi?id=14114>
> [10] http://www.w3.org/2010/02/**rdfa/track/issues/97<http://www.w3.org/2010/02/rdfa/track/issues/97>
> [11] http://lists.w3.org/Archives/**Public/semantic-web/2011Oct/**
> 0113.html<http://lists.w3.org/Archives/Public/semantic-web/2011Oct/0113.html>
> [12] http://www.w3.org/wiki/HTML_**Data_Improvements#Link_**Relations<http://www.w3.org/wiki/HTML_Data_Improvements#Link_Relations>
> [13] http://lists.w3.org/Archives/**Public/public-vocabs/2011Nov/**
> 0022.html<http://lists.w3.org/Archives/Public/public-vocabs/2011Nov/0022.html>
>
> --
> Jeni Tennison
> http://www.jenitennison.com
>
>
>
>
>
>
> --
> Richard Ishida
> Internationalization Activity Lead
> W3C (World Wide Web Consortium)
>
> http://www.w3.org/**International/ <http://www.w3.org/International/>
> http://rishida.net/
>
>