The schemas can strike a practical balance between capturing current practice and describing a todo list of things to fix on current practice. It's possible we will want to separate those roles. In the meantime, can you survey existing instances and propose a shape which is not too far from the deployed instances?
On Tue, May 28, 2019 at 10:13 PM Peter F. Patel-Schneider < [email protected]> wrote: > I sure hope that E10 is *not* the shape for human. It certainly isn't a > correct shape for humans that belong to subclasses of human (such as Old > Croghan Man (Q166790) or Delina Filkins (Q1408186)). E10 is also currently > silent on what information should be present for humans, which I take it > to be > the point of having ShEx in Wikidata. > > It is also unclear what is means to be the shape for human. The shape E10- > does not have any information on which items are to be considered against > the > shape. Are all items in Wikidata to be considered (as in the definition of > ShEx)? That doesn't seem right. Are all direct instances of human? That > seems to limiting. Are all indirect instances of human? This seems the > most > natural, but where is this behaviour given? > > Peter F. Patel-Schneider > Samsung Research America > > > > On 5/28/19 12:04 PM, 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 <[email protected] > > <mailto:[email protected]>> 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 < > http://test.wikidata.org> > > on May 21st and on wikidata.org <http://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 <http://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. > > > > > > > > -- > > Léa Lacroix > > Project Manager Community Communication for Wikidata > > > > Wikimedia Deutschland e.V. > > Tempelhofer Ufer 23-24 > > 10963 Berlin > > www.wikimedia.de <http://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 > > [email protected] > > https://lists.wikimedia.org/mailman/listinfo/wikidata > > > > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata >
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