View source for WebSchemas

=Web Schemas=

* For [http://schema.org schema.org]'s proposals tracker, see [[WebSchemas/SchemaDotOrgProposals|Extension proposals]] ([https://www.w3.org/2000/09/dbwg/details?group=49967 W3C database entry])
* Web Schemas was a [http://lists.w3.org/Archives/Public/public-html-data-tf/ W3C group] used by the [http://schema.org/ schema.org] project to collaborate with the wider community.
* The group is not just for schema.org; however there is more traffic here about schema.org because it is the only schema.org mailing lists. ''Other projects/vocabularies are very welcome also''!
* Since 2014 schema.org uses [https://github.com/schemaorg/schemaorg/issues Github] for active development (like many other W3C communities).
* Schema.org now has a dedicated [http://www.w3.org/community/schemaorg W3C Community Group] including a public-schemaorg@w3.org [https://lists.w3.org/Archives/Public/public-schemaorg mailing list] 
* This Wiki is left primarily for historical record...

==Introduction==

This is the main Wiki page for W3C's [http://www.w3.org/2001/sw/interest/ Semantic Web Interest Group] ''Web Schemas'' task force. Amongst other roles, it serves as a public discussion forum for [http://schema.org/ Schema.org], including [[WebSchemas/SchemaDotOrgProposals|Extension proposals]].

The taskforce chairs are R.V.Guha (Google) and [http://www.w3.org/wiki/User:Danbri Dan Brickley] (Google)

In scope include collaborations on mappings, tools, extensibility and cross-syntax interoperability. An [http://www.w3.org/wiki/Html-data-tf HTML Data] group is nearby (see also [http://lists.w3.org/Archives/Public/public-html-data-tf/ public-html-data-tf list]); detailed discussion about Web data syntax belongs there.

See the [http://www.w3.org/2001/sw/interest/webschema.html charter] for more details. 

The group uses the '''public-vocabs@w3.org''' mailing list

* See [http://lists.w3.org/Archives/Public/public-vocabs/ public-vocabs@w3.org archives]
* [http://www.w3.org/2011/webschema/track/ Issue Tracker] (organized into "Feedback on X" products/categories, where Xs are Schemas we're discussing)
* To subscribe, send a message to public-vocabs-request@w3.org with Subject: subscribe (see [http://lists.w3.org/ lists.w3.org] for more details). To unsubscribe, do the same but use 'unsubscribe' in the title.
* If you are new to the W3C community, you will need to go through the [http://www.w3.org/2002/09/aa/ archive approval] process before your posts show up in the archives.
* To edit this wiki, you'll need a W3C account; these are [http://www.w3.org/Help/Account/Request/Public available to all]
* To search just this WebSchemas wiki, the issue tracker and schema.org-related mailing lists, try a [http://www.google.com/cse/home?cx=003736913799082383568:c44bi0_xxek a custom search].

Groups who maintain Web Schemas are welcome to use this forum as a feedback channel, in additional to whatever independent mechanisms they also offer.

In particular, the Schema.org initiative has [http://blog.schema.org/2011/10/w3c-web-schemas-group-is-our-new-public.html adopted] this group as its primary public feedback forum. Others are invited to do likewise.
 
Any W3C-related questions, ask Dan Brickley (SWIG chair), c/o danbri@danbri.org

==Discussion Elsewhere==

For background discussion on this group, Schema.org and W3C's SWIG, the Oct 2011 [http://semanticweb.com/the-semantic-link-%E2%80%93-episode-11-october-2011_b23961 Semantic Link] podcast may be of interest.

The Dublin Core Metadata Initiative has a related task group working on [http://wiki.dublincore.org/index.php/Schema.org_Alignment Schema.org Alignment], alongside existing vocabulary collaboration work [http://dublincore.org/documents/dcmi-foaf/ with FOAF].

For schema.org there are discussions on various sites (unofficial; this group is the only place monitored by Schema.org team) :

* [https://twitter.com/#!/search/schema.org on Twitter]
* [https://plus.google.com/s/schema.org on G+]
* [http://stackoverflow.com/questions/tagged/schema.org schema.org tag on Stack Overflow]
* [http://answers.semanticweb.com/search/?q=schema.org&Submit=search&t=question answers.semanticweb.com]
* [http://www.quora.com/Schema-org Schema.org on Quora]

Talks and slides:

* [http://www.slideshare.net/rvguha/sem-tech2014c  Guha's] and [https://docs.google.com/presentation/d/1f-2asymXOCCYHa75OkOnlqc0SExvD44V5D6buyKHfII/edit?usp=sharing Dan Brickley's] SemTech 2014 slides.

==Proposals from and for Schema.org==

The main table for managing/tracking schema.org proposals is maintained here: [[WebSchemas/SchemaDotOrgProposals|Schema.org Proposals]]

A separate entry discussed [http://www.w3.org/wiki/SchemaDotOrgProcess Schema.org Process] as it relates to this group.

Possible future discussions for Schema.org extensions (proposals welcomed; this list is free-form...):

* Points of Interest (POIs), collab with OGC group. See [http://opengeospatial.github.io/poi/spec/graphics/poi_model.svg data model], [http://opengeospatial.github.io/poi/spec/poi-core.html latest spec draft].
* Journals / scholarly publishing
* Magazines
* Cultural heritage - libraries, museums, archives. See [http://www.w3.org/2005/Incubator/lld/ Linked Library W3C group], [http://www.europeana.eu/portal/ Europeana], [http://cyber.law.harvard.edu/dpla/Main_Page DPLA], [http://lod-lam.net/summit/ LOD-LAM] etc.
* Bibliographic [http://www.w3.org/community/schemabibex/ Schema Bib Extend]
* Integration of constructs based on Good Relations, FOAF, Dublin Core, ...
* [http://www.w3.org/2011/gld/wiki/Main_Page Linked Govt data]
* Software / Apps
* Health/Medicine
* Cars and Vehicles
* ''the relationships between all of these''

Some discussions are in fact targeted at the underlying syntaxes used for exposing schema.org markup:
*[[WebSchemas/InverseProperties|Inverse Properties for Microdata]]

==Tools and Statistics==

* Statistics
** [http://lists.w3.org/Archives/Public/public-vocabs/2012Apr/0018.html Metadata statistics from Yahoo! Search]
** [http://webdatacommons.org/structureddata/2012-08/stats/stats.html RDFa, Microdata and Microformat deployment statistics from WebDataCommons.org (August 2012)]
** [http://webdatacommons.org/structureddata/2013-11/stats/stats.html RDFa, Microdata and Microformat deployment statistics from WebDataCommons.org (November 2013)]
** [http://sindice.com/stats/basic-stats/# Sindice stats] ([http://lists.w3.org/Archives/Public/public-vocabs/2012Apr/0020.html announcement])
** [http://lists.w3.org/Archives/Public/public-vocabs/2012Apr/ General stats discussion] incl. Bizer et al.'s CommonCrawl extraction ([http://lists.w3.org/Archives/Public/public-vocabs/2012Apr/0029.html announcement]); there is some [http://lists.w3.org/Archives/Public/public-vocabs/2012Apr/0016.html debate about shortcomings of this analysis and the proper interpretation of these].
* Validators
** [http://www.google.com/webmasters/tools/richsnippets Google richsnippets tool]
** [http://www.bing.com/toolbox/EntityExtraction Microsoft Bing Markup Validator] (entity extractor)
** [http://webmaster.yandex.ru/microtest.xml Yandex checker]
** [http://linter.structured-data.org/ Structured Data Linter]
* Search Tools
** [http://www.google.com/cse/home?cx=003736913799082383568:c44bi0_xxek Google custom search] of schema.org/webschema-related sites. ([http://www.google.com/search?start=0&num=10&q=MediaObject&client=google-csbe&output=xml_no_dtd&cx=003736913799082383568:c44bi0_xxek XML results] are also [https://developers.google.com/custom-search/docs/xml_results?hl=en#WebSearch_Request_Format available])
** [http://www.raymondcamden.com/index.cfm/2012/11/26/Reading-Microdata-Elements-in-Chrome reading microdata in Chrome]
* Authoring Tools
** [http://rdface.aksw.org RDFaCE]
** [http://schema-creator.org/ Schema Creator]
** [http://www.microdatagenerator.com/ Schema.org Generator | Microdata Generator ]
** [http://www.schemaapp.com Schema App | Schema.org Creator]
* Vocabulary QA
** Sandro Hawke made a [https://gist.github.com/sandhawke/5691972 list of 'overloaded' schema.org properties] that expect sometimes a Thing, sometimes a Text value.

==Mappings==

Mappings between various vocabularies of interest on the Web Schemas list. The following are mostly using schema.org as a hub, but others would be great to collect too.

* [http://www.mkbergman.com/999/new-umbel-release-gains-schema-org-geonames-capabilities/ UMBEL] schema.org mappings (data is in [https://github.com/structureddynamics/UMBEL/blob/master/External%20Ontologies/schema.org.n3 github])
* [http://wiki.dublincore.org/index.php/Schema.org_Alignment Dublin Core / Schema.org Allignment taskforce].
* [http://schema.rdfs.org/mappings.html schema.rdfs.org mapping page].
** [http://schema.rdfs.org/mappings/sioc SIOC mappings]
** [http://mappings.dbpedia.org/server/ontology/export DBpedia mappings file] (download; includes schema.org)
** [http://schema.rdfs.org/mappings/bibo bibo]
** [[GoodRelations]] integration is underway
** [http://schema.rdfs.org/mappings/schemaorg_wn.owl Wordnet]
* A discussion note on [[WebSchemas/SchemaDotOrgOData|schema.org and OData]] is available.

==Markup examples==

This group is about vocabulary (schemas) rather than specific markup syntax details. However since syntax specs are evolving in parallel, there are often discussions that need to mix syntax and vocabulary issues.

* from structured-data.org, some [http://linter.structured-data.org/examples/ examples] showing RDFa 1.1 lite versions of Schema.org's Microdata samples


Schema.org example sites - the following list give concrete examples of Schema.org sites (testable with [http://www.google.com/webmasters/tools/richsnippets Google richsnippets tool]):
* TV series - http://www.imdb.com/title/tt0813715/ ([http://www.google.com/webmasters/tools/richsnippets?url=http%3A%2F%2Fwww.imdb.com%2Ftitle%2Ftt0813715%2F&view= Google checker])
* Product - http://www.ebay.com/ctg/Logitech-Revue-/97019743
* Movie - http://www.imdb.com/title/tt1375666/  http://www.rottentomatoes.com/m/inception/
* Music - http://www.myspace.com/awilolongombaofficiel/music/playlists/awilo-longomba-officiel-s-playlist-243959?_escaped_fragment_=
* Events - www.ticketmaster.com/Foo-Fighters-tickets/artist/776005?_escaped_fragment_=
* [http://schema.org/Recipe Recipe] - http://www.isaveurs.com/recette/recette_tarte_tatin.php