Thanks for your feedback! There is already a ticket about adding a new data type allowing to link EntitySchemas from statements: https://phabricator.wikimedia.org/T214884 If we don't encounter any major technical issue, this could be done in the incoming weeks.
On Tue, 28 May 2019 at 19:18, James Heald <jpm.he...@gmail.com> wrote: > Hi Léa, > > Thanks to all the team for this. > > I've proposed a property, > > > https://www.wikidata.org/wiki/Wikidata:Property_proposal/Shape_Expression_for_class > > To make this work, is it possible to have a Shape Expression as the > value of a statement on Wikidata (and the RDF dump, and WDQS) ? > > Is there a timescale in which this should become possible ? > > Thanks, > > James. > > > > > On 28/05/2019 17:04, Léa Lacroix wrote: > > Hello all, > > > > As previously announced, we just released shape expressions on Wikidata. > > You can for example have a look at E10, the shape for human > > <https://www.wikidata.org/wiki/EntitySchema:E10>, or create a new > > EntitySchema <https://www.wikidata.org/wiki/Special:NewEntitySchema>. > > > > A few useful links: > > > > - WikiProject ShEx > > <https://www.wikidata.org/wiki/Wikidata:WikiProject_ShEx> > > - introduction to ShEx <http://shex.io/shex-primer/> > > - more details about the language <http://shex.io/shex-semantics/> > > - More information about how to create a Schema > > < > https://www.wikidata.org/wiki/Wikidata:WikiProject_ShEx/How_to_get_started%3F > > > > - Phabricator tag: shape-expressions > > <https://phabricator.wikimedia.org/tag/shape_expressions/> > > - User script > > < > https://www.wikidata.org/wiki/User:Zvpunry/EntitySchemaHighlighter.js> > > to highlight items and properties in the schema code and turn the > IDs into > > links > > > > If you have any question or encounter issues, feel free to ping me. > Cheers, > > > > Léa > > > > On Sun, 19 May 2019 at 15:32, Léa Lacroix <lea.lacr...@wikimedia.de> > wrote: > > > >> Hello all, > >> > >> After several months of development and testing together with the > WikiProject > >> ShEx <https://www.wikidata.org/wiki/Wikidata:WikiProject_ShEx>, Shape > >> Expressions are about to be enabled on Wikidata. > >> *First of all, what are Shape Expressions?* > >> > >> ShEx (Q29377880) <https://www.wikidata.org/wiki/Q29377880> is a > concise, > >> formal modeling and validation language for RDF structures. Shape > >> Expressions can be used to define shapes within the RDF graph. In the > case > >> of Wikidata, this would be sets of properties, qualifiers and references > >> that describe the domain being modeled. > >> > >> See also: > >> > >> - a short video about ShEx > >> <https://www.youtube.com/watch?v=AR75KhEoRKg> made by community > >> members during the Wikimedia hackathon 2019 > >> - introduction to ShEx <http://shex.io/shex-primer/> > >> - more details about the language <http://shex.io/shex-semantics/> > >> > >> *What can it be used for?* > >> > >> On Wikidata, the main goal of Shape Expressions would be to describe > what > >> the basic structure of an item would be. For example, for a human, we > >> probably want to have a date of birth, a place of birth, and many other > >> important statements. But we would also like to make sure that if a > >> statement with the property “children” exists, the value(s) of this > >> property should be humans as well. Schemas will describe in detail what > is > >> expected in the structure of items, statements and values of these > >> statements. > >> > >> Once Schemas are created for various types of items, it is possible to > >> test some existing items against the Schema, and highlight possible > errors > >> or lack of information. Subsets of the Wikidata graph can be tested to > see > >> whether or not they conform to a specific shape through the use of > >> validation tools. Therefore, Schemas will be very useful to help the > >> editors improving the data quality. We imagine this to be especially > useful > >> for wiki projects to more easily discuss and ensure the modeling of > items > >> in their domain. In the spirit of Wikidata not restricting the world, > Shape > >> Expressions are a tool to highlight, not prevent, errors. > >> > >> On top of this, one could imagine other uses of Schemas in the future, > for > >> example building a tool that would suggest, when creating a new item, > what > >> would be the basic structure for this item, and helping adding > statements > >> or values. A bit like this existing tool, Cradle > >> <https://tools.wmflabs.org/wikidata-todo/cradle/#/>, that is currently > >> not based on ShEx. > >> *What is going to change on Wikidata?* > >> > >> - A new extension will be added to Wikidata: EntitySchema > >> <https://www.mediawiki.org/wiki/Extension:EntitySchema>, defining > the > >> Schema namespace and its behavior as well as special pages related > to it. > >> - A new entity type, EntitySchema, will be enabled to store Shape > >> Expressions. Schemas will be identified with the letter E. > >> - The Schemas will have multilingual labels, descriptions and > aliases > >> (quite similar to the termbox on Items), and the schema text one > can fill > >> with a syntax called ShEx Compact Syntax (ShExC) > >> <http://shex.io/shex-semantics/#shexc>. You can see an example here > >> <https://wikidata-shex.wmflabs.org/wiki/EntitySchema:E2>. > >> - The external tool shex-simple > >> < > https://tools.wmflabs.org/shex-simple/wikidata/packages/shex-webapp/doc/shex-simple.html?schemaURL=https%3A%2F%2Fwikidata-shex.wmflabs.org%2Fwiki%2FSpecial%3AEntitySchemaText%2FE2 > > > >> is directly linked from the Schema pages in order to check entities > of your > >> choice against the schema. > >> > >> *When is this happening?* > >> > >> Schemas will be enabled on on test.wikidata.org on May 21st and on > >> wikidata.org on May 28th. After this release, they will be integrated > to > >> the regular maintenance just like the rest of Wikidata’s features. > >> *How can you help?* > >> > >> - Before the release, you can try to edit or create Shape > Expressions > >> on our test system < > https://wikidata-shex.wmflabs.org/wiki/Main_Page> > >> - If you find any issue or feature you’d like to have, feel free to > >> create a new task on Phabricator with the tag shape-expressions > >> - Once Schemas are enabled, you can discuss about it on your > favorite > >> wikiprojects: for example, what types of items would you like to > model? > >> - You can also get more information about how to create a Schema > >> < > https://www.wikidata.org/wiki/Wikidata:WikiProject_ShEx/How_to_get_started%3F > > > >> > >> *See also: * > >> > >> - Main Phabricator board > >> <https://phabricator.wikimedia.org/tag/shape_expressions/> > >> - Technical documentation of the extension > >> <https://meta.wikimedia.org/wiki/Extension:EntitySchema> > >> - To enhance the interface, you can use this user script > >> < > https://www.wikidata.org/wiki/User:Zvpunry/EntitySchemaHighlighter.js> > >> to highlight items and properties in the schema code and turn the > IDs into > >> links > >> > >> If you have any questions, feel free to reach me. Cheers, > >> -- > >> Léa Lacroix > >> Project Manager Community Communication for Wikidata > >> > >> Wikimedia Deutschland e.V. > >> Tempelhofer Ufer 23-24 > >> 10963 Berlin > >> www.wikimedia.de > >> > >> Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V. > >> > >> Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg > >> unter der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das > Finanzamt > >> für Körperschaften I Berlin, Steuernummer 27/029/42207. > >> > > > > > > > > _______________________________________________ > > Wikidata mailing list > > Wikidata@lists.wikimedia.org > > https://lists.wikimedia.org/mailman/listinfo/wikidata > > > > -- Léa Lacroix Project Manager Community Communication for Wikidata Wikimedia Deutschland e.V. Tempelhofer Ufer 23-24 10963 Berlin www.wikimedia.de Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V. Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg unter der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das Finanzamt für Körperschaften I Berlin, Steuernummer 27/029/42207.
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