Wikidata

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[Wikidata-l] Wikidata Toolkit 0.3.0 released
by Markus Krötzsch 02 Oct '14

02 Oct '14

Dear all, I am happy to announce the third release of Wikidata Toolkit [1], the Java library for programming with Wikidata and Wikibase. The main new features are: * Full support for the (now) standard JSON format used by Wikidata * Huge performance improvements (decompressing and parsing the whole JSON dump now takes about 15min; was more like 80min before) * Many new example programs for inspiration and guidance [2] Maven users can get the library directly from Maven Central (see [1]); this is the preferred method of installation. There is also an all-in-one JAR at github [3] and of course the sources [4]. Version 0.3.0 is still in alpha. For the next release, we will focus on the following tasks: * Support a binary format for even faster random access (some of this is done already, but not quite ready for release yet) * A command-line tool for data processing/conversion tasks * Support for storing and querying data Feedback is very welcome. Developers are also invited to contribute via github. Cheers, Markus [1] https://www.mediawiki.org/wiki/Wikidata_Toolkit [2] https://github.com/Wikidata/Wikidata-Toolkit/tree/master/wdtk-examples (scroll down for documentation) [3] https://github.com/Wikidata/Wikidata-Toolkit/releases (you'll also need to install the third party dependencies manually when using this) [4] https://github.com/Wikidata/Wikidata-Toolkit/

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[Wikidata-l] Venue for Wikidata research
by Markus Krötzsch 01 Oct '14

01 Oct '14

Dear all: Those of you active in research may be interested in submitting to a recently announced special issue of the Journal of Web Semantics that explicitly refers to Wikidata in its call: "JWS Special Issue on Knowledge Graphs" http://www.websemanticsjournal.org/index.php/ps/announcement/view/19 I am a guest editor for this issue and I would obviously be delighted to see some Wikidata-related works, but also other research on large, heterogeneous, graph-like knowledge collections is welcome. JWS is a top journal on Web data and semantic technologies, so we are looking for high-quality research here. Please spread the word as appropriate. Cheers, Markus P.S. Note that JWS provides Open Access options for those who want to ensure that their work is freely licensed. However, JWS also has a tradition of keeping all of its preprints freely accessible via its preprint archive; see http://www.websemanticsjournal.org/index.php/ps/issue/archive

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[Wikidata-l] link von "de:afrikanische Pflaume" auf "fr:safou" - "unerwarteter fehler aufgetreten: $1"
by rupert THURNER 01 Oct '14

01 Oct '14

hi, i was wondering how to resolve the items for safou, and safoutier correctly. there are two entries: https://www.wikidata.org/wiki/Q2369010 https://www.wikidata.org/wiki/Q3461291 both called Dacryodes edulis. on the french wikipedia there are two articles, "safoutier" for the tree, and "safou" for the fruit. i noticed this when i created a forward "afrikanische Pflaume" pointing to "prunus" on the german wikipedia. i pressed than "add links" on the french wikipedia - which did not find "afrikanische pflaume". then i pressed add link on the german wikipedia which found "safou". pressing ok then gave the error "es ist ein unerwarteter fehler aufgetreten: $1. how is this expected to work, or, how could i fix this? rupert

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[Wikidata-l] policy toward using non-CC0 licensed external databases as reference
by Maxime Lathuilière 29 Sep '14

29 Sep '14

Hi! Sorry, I'm quite sure I'm re-opening an issue already discussed but I can't find where; if so, please share the link. I'm working with cultural items data on wikidata and I'm wondering what I'm allowed to do when for instance: - I want to improve the item Q618719 <https://www.wikidata.org/wiki/Q618719> - I find information in Google Books API <https://www.googleapis.com/books/v1/volumes/?q=Asterix%20le%20gaulois> about this item that could help me fill isbn properties in wikidata (P212 and P957) Google Books API's Terms of Service <https://developers.google.com/books/terms> is elusive regarding the licence but it certainly isn't CC0. Meanwhile, I guess I'm allowed to copy the information by hand, right? It's just facts about the item, I'm using this API just like I would have used a newspaper or anything as a reference, right? But could I automate or semi-automate (à la wikidata game) the import process without being in infringement with either Google or Wikidata policies? I would just do the exact same thing - taking facts somewhere in the world and adding them to wikidata - but more efficiently, no? My vision is quite blurred on this, thanks in advance for clarification! Bests, Max -- Maxime Lathuilière maxlath.eu <http://maxlath.eu> @maxlath Zorglub27 <https://www.wikidata.org/wiki/User:Zorglub27>

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[Wikidata-l] extensions not on translatewiki.net
by Amir E. Aharoni 27 Sep '14

27 Sep '14

Hi, Several Wikidata-related extensions are not translatable on translatewiki.net. The ones I could find are: * Wikibase DataModel * Wikibase DataModel JavaScript * Wikidata build * WikimediaBadges * The various DataValues extensions All extensions need at least a translatable description for Special:Version, and some of the above have actual messages to translate. If I understand correctly, the reasons for this is that it's more comfortable for their developers to have the code review in GitHub, and translatewiki's MediaWiki extensions L10n export scripts work only with Gerrit. The question is, is it feasible to sync GitHub and Gerrit, so that these extensions would be easily translatable? If I understand correctly, something like this is already done for some MediaWiki extensions, among the SemanticResultFormats and Maps. Thanks for any assistance. -- Amir Elisha Aharoni · אָמִיר אֱלִישָׁע אַהֲרוֹנִי http://aharoni.wordpress.com ‪“We're living in pieces, I want to live in peace.” – T. Moore‬

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[Wikidata-l] packaging and deployment time
by Amir E. Aharoni 27 Sep '14

27 Sep '14

Hi, The following little change by myself was merged by Aude on September 9: https://gerrit.wikimedia.org/r/#/c/159070/ As far as I can see, it is not deployed to Wikipedia yet. It's not really urgent, but it made me curious: What is the deployment schedule for Wikidata extensions? -- Amir Elisha Aharoni · אָמִיר אֱלִישָׁע אַהֲרוֹנִי http://aharoni.wordpress.com ‪“We're living in pieces, I want to live in peace.” – T. Moore‬

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[Wikidata-l] Lighthouse
by Markus Bärlocher 26 Sep '14

26 Sep '14

Liebe WD-Spezialisten, OpenSeaMap möchte die Leuchtfeuer-Daten in WD verbessern :-) Test: https://www.wikidata.org/w/index.php?title=Q1821432&uselang=de _Quelle_ Habe eine neue Quelle für die Koordinate eingefügt. Da steht jetzt die neue Koordinate, und als Quelle "OSM". Wie kann ich die Quelle genau angeben: https://www.openstreetmap.org/node/330119702 _neue Aussage_ Mit Name und Koordinate und "Bauwerk" ist das Objekt unzureichend beschrieben ;-) - Wie kann ich weitere "Aussagen" hinzufügen? - Wie definiere ich die "Struktur" einer Aussage? (z.B. "range=<Tragweite in Seemeilen>") - Wie kann ich dafür sorgen, dass diese Aussagen /allen/ Objekten in der Kategorie "Lighthouse" zur Auswahl angeboten werden? - Wie erzeuge ich eine Kategorie "Lighthouse" bzw. "Nautical light"? - Wie erzeuge ich Unterkategorien? Vielleicht kann das hier jemand nachvollziehbar erklären (deutsch) und am Beispiel "Kiel" exemplarisch umsetzen? Wäre super! _Verlinkung_ Wie kann man automatisch einfügen: - WD-Link in das korrespondierende OSM-Objekt - WD-Link in WP (ist vermutlich über WD automatisch verlinkt?) - OSM-Link in WD - OSM-Link in WP (ist vermutlich über WD automatisch verlinkt?) - WP-Links in WD (ist vermutlich über WD automatisch verlinkt?) - WP-Link in OSM (ist vermutlich über WD automatisch verlinkt?) Wie findet WD alle relevanten WP-Versionen? Wie findet WD die relevante Commons-Kategorie? Mit herzlichem Gruss, Markus

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[Wikidata-l] Why? Modeling causes on Wikidata
by Emw 24 Sep '14

24 Sep '14

Hi all, Talk about causes is ubiquitous in everyday life and many other domains of knowledge. Until recently, we've had a few properties to make statements about cause in certain narrow areas, but lacked a way to structure data about causes across a broad range of subjects. For example, you might want to know: - What caused World War II? - What causes evolution? - What causes malaria? - What causes bread to rise? - What causes rust? - What causes gravity? - What causes rainbows? Wikidata now has some new properties that provide structure for basic answers to such questions. - *has cause* (alias: *has underlying cause*): thing that ultimately resulted in the effect [1] - *has immediate cause*: thing that proximately resulted in the effect [2] - *has contributing factor*: thing that significantly influenced the effect, but did not directly cause it [3] This approach to modeling causation attempts to balance expressiveness with simplicity. It borrows from the idea of causation as a "chain of events", which also has background conditions or events that set the stage for some outcome. These properties are not perfect, but they do allow us to capture much richness in how various sources talk about causes -- and to do so in a way that humans can easily understand. https://www.wikidata.org/wiki/Help:Modeling_causes explains these properties, their background, examples, things to avoid, issues and context. Please comment on the 'Help:Modeling causes' talk page, or here, with any feedback. Hopefully we'll be able to build some cool stuff with this. Cheers, Eric https://www.wikidata.org/wiki/User:Emw 1. *has cause*. https://www.wikidata.org/wiki/Property:P828 2. *has immediate cause. *https://www.wikidata.org/wiki/Property:P1478 3. *has contributing factor.* https://www.wikidata.org/wiki/Property:P1479

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[Wikidata-l] Welcome Jan!
by Lydia Pintscher 18 Sep '14

18 Sep '14

Hey folks :) I'm happy to let you know that Jan Zerebecki has joined the Wikidata dev team. Some of you surely met him at previous hackathons and Wikimania. He will be supporting the dev team on the backend-side. Previously Jan has already been helping out as a volunteer around Wikimedia in many areas - most notably ops. Cheers Lydia -- Lydia Pintscher - http://about.me/lydia.pintscher Product Manager 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 27/681/51985.

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[Wikidata-l] Commons Wikibase
by Derric Atzrott 17 Sep '14

17 Sep '14

Hey, So I heard on another mailing list that Commons is getting its own installation of Wikibase along with using Wikidata? Is this true, and if so, where might I find more information about it? Thank you, Derric Atzrott Computer Specialist Alizee Pathology

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