Regarding the construction phases complex type that you want you have a couple of options. Properties support lists of values, so you could split the type into multiple properties and give a list of values for each. Then when qualifiers are added you could add a date range qualifier to each value to specify the phase or just use string qualifiers that say "phase 1", "phase 2", etc. depending on how detailed the information is. You can also group the properties in their own item. So you could create an item called "Potaissa phase 1 construction details" and then have construction phase just be a list of those specific items, which themselves contain the information.
Date: Wed, 27 Mar 2013 12:55:18 +0100 From: [email protected] To: [email protected] Subject: Re: [Wikidata-l] A data model for Roman forts (castra) I would say this is a good starting point. The Wikidata data model is described in full detail here [1], and a introductory primer is given here [2]. Qualifiers are not implemented yet, but will be there soon, and followed by more datatypes (like time, geo, etc.). The major difference is that values like "stone" for material or "opus-quadratum" for technique should not be strings - this does not translate well. They should be pointing to items, e.g. Q8063 instead of "stone" and Q2631941 instead of "opus-quadratum". The other thing is that Wikidata does not really intend to enable constraints in that very strong sense that your schema chooses. So if someone wants to add a value for material that you did not preconceive, like Q40861 (Marble), Wikidata-as-a-software will not stop them from doing so (just as Wikipedia-as-a-software does not stop you from entering that, either) (see also [3]). I hope this helps,Denny [1] http://meta.wikimedia.org/wiki/Wikidata/Data_model [2] http://meta.wikimedia.org/wiki/Wikidata/Notes/Data_model_primer[3] http://blog.wikimedia.de/2013/02/22/restricting-the-world/ 2013/3/27 Flaviu <[email protected]> I fully agree with you that the XSD model cannot by precisely integrated into Wikidata and also I know Wikidata development is in progress. I think I could deal with simple properties like "material" but I'm not sure how to deal with complex properties like "construction phases" I'm not sure. Even if it is no implementation yet, how these complex properties could be defined? On 03/26/2013 11:53 PM, Michael Hale wrote: You can't integrate the XSD model precisely as it is defined because Wikidata doesn't allow all of the constraints that XSD allows. Specifically, you'll notice that you can't force an item to have a specific property (like the document or epigraphic reference in your model) and enumerations aren't currently supported. Wikidata has a global collection of properties and any item can use any arbitrary subset of them. The list is here: http://www.wikidata.org/wiki/Wikidata:List_of_properties. Some of the ones you want already exist, like material used for a building. http://www.wikidata.org/wiki/Property:P186 You'll want to propose the other ones you want here: http://www.wikidata.org/wiki/Wikidata:Property_proposal. I just added two statements (when you use a property, called a claim without references) to the Potaissa item that you use as an example. http://www.wikidata.org/wiki/Q7234612 > Date: Tue, 26 Mar 2013 22:50:52 +0200 > From: [email protected] > To: [email protected] > Subject: [Wikidata-l] A data model for Roman forts (castra) > > Hi all, > > I recently attended "Wikidata meets archeology" symposium and I came > across the question how a well structured and comprehensive data model > of Roman forts (castra) could be integrated into Wikidata and then used > on Wikipedia. For this I developed a raw XSD model based on the data > model of Wikipedia's Infobox castrum. I put this model on the talk page > of Q88205 (https://www.wikidata.org/wiki/Talk:Q88205) adding also a > simple example. I would like to know this data model could be integrated > into Wikidata? It is feasible? Is it too complex? > > Thank you, > Saturnian > > _______________________________________________ > Wikidata-l mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata-l _______________________________________________ Wikidata-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata-l _______________________________________________ Wikidata-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata-l -- Project director Wikidata Wikimedia Deutschland e.V. | Obentrautstr. 72 | 10963 Berlin Tel. +49-30-219 158 26-0 | http://wikimedia.de Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e.V. Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg unter der Nummer 23855 B. Als gemeinnützig anerkannt durch das Finanzamt für Körperschaften I Berlin, Steuernummer 27/681/51985. _______________________________________________ Wikidata-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata-l
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