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I would like to know about
by Bhargavi Ambati 11 Sep '16

11 Sep '16

I would like to have a detailed description on banking domain project. Can you please help me! Thanking you, Bhargavi

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Announcing the Wikidata Stable Interface Policy
by Daniel Kinzler 23 Aug '16

23 Aug '16

Hello all! After a brief period for final comments (thanks everyone for your input!), the Stable Interface Policy is now official. You can read it here: <https://www.wikidata.org/wiki/Wikidata:Stable_Interface_Policy> This policy is intended to give authors of software that accesses Wikidata a guide to what interfaces and formats they can rely on, and which things can change without warning. The policy is a statement of intent given by us, the Wikidata development team, regarding the software running on the site. It does not apply to any content maintained by the Wikidata community. -- Daniel Kinzler Senior Software Developer Wikimedia Deutschland Gesellschaft zur Förderung Freien Wissens e.V.

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Policy on Interface Stability: final feedback wanted
by Daniel Kinzler 16 Aug '16

16 Aug '16

Hello all, repeated discussions about what constitutes a breaking change has prompted us, the Wikidata development team, to draft a policy on interface stability. The policy is intended to clearly define what kind of change will be announced when and where. A draft of the policy can be found at <https://www.wikidata.org/wiki/Wikidata:Stable_Interface_Policy> Please comment on the talk page. Note that this policy is not about the content of the Wikidata site, it's a commitment by the development team regarding the behavior of the software running on wikidata.org. It is intended as a reference for bot authors, data consumers, and other users of our APIs. We plan to announce this as the development team's official policy on Monday, August 22. -- Daniel Kinzler Senior Software Developer Wikimedia Deutschland Gesellschaft zur Förderung Freien Wissens e.V.

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Wikidata Toolkit 0.7.0 released
by Markus Kroetzsch 05 Aug '16

05 Aug '16

Dear all, I hereby announce the release of Wikidata Toolkit 0.7.0 [1], the Java library for programming with Wikidata and Wikibase. This is a maintenance release that implements several fixes to ensure that WDTK can be used with recent Wikidata API outputs and future Wikidata JSON dumps. The new version also ships the code used to generate the basic statistics used in the back of the SQID Wikidata Browser [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] and updated JavaDocs [5]. As usual, feedback is welcome. Developers are also invited to contribute via github. Cheers, Markus [1] https://www.mediawiki.org/wiki/Wikidata_Toolkit [2] https://tools.wmflabs.org/sqid/ [3] https://github.com/Wikidata/Wikidata-Toolkit/releases [4] https://github.com/Wikidata/Wikidata-Toolkit/ [5] http://wikidata.github.io/Wikidata-Toolkit/ -- Prof. Dr. Markus Kroetzsch Knowledge-Based Systems Group Faculty of Computer Science TU Dresden +49 351 463 38486 https://iccl.inf.tu-dresden.de/web/KBS/en

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Query Deadline is Expired error when Querying Wikidata
by Abdulfattah Safa 03 Aug '16

03 Aug '16

Hi, I'm trying to find Wikidata items based on label as follows: > SELECT ?item ?itemLabel WHERE > { > ?item rdfs:label ?itemLabel > FILTER(CONTAINS(LCASE(?itemLabel),"*keyword*")). > } > limit 3 However, for some cases, the following error returns n some cases Query deadline is expired. I mean it works well for some words but fails with others. Could anyone help please? -- Regards, Abdulfattah Safa Senior Software Engineer Mobile: (+972)(599)231600 Skype: fattah.safa *P **Please consider the environment before printing this email*

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Wikidata for cultural heritage?
by Richard Light 01 Jul '16

01 Jul '16

Hi, My view is that, in order for there to be any point in cultural heritage bodies (museums, libraries, archives, historians) publishing their collections etc. as Linked Data, there needs to be a common Linked Data framework representing the historical space-time universe, which they can all quote. Current practice (such as the British Museum Linked Data offering) suggests that concepts such as people, places and events will otherwise be represented either by useless string values or by system-specific URLs which have no wider meaning. As a result, I would like to explore the potential for Wikidata to act as this lingua franca for the cultural heritage community. You'll see from my earlier messages to this list that I have been grappling with the SPARQL end-point. Initially I was confused by the interactive version of the Query Service [1], which differs in its response format from the similarly-URLed end-point and doesn't provide an RDF/XML response. I have now managed to set up Wikidata as a 'web termlist' service for artists, within the Modes software (see attached screenshot). (The data in the pop-up window is generated on the fly from the Wikidata RDF.) At this point, I have the following questions: 1. what level of stability is planned as regards Wikidata identifiers/URLs? Can I treat the full URL (e.g.[3]) as persistent, or can I only rely on the core Wikidata identifier (e.g. [4]) remaining unchanged into the indefinite future? (Can I even rely on that?) 2. what is the policy on inclusivity? Do entities need to be 'notable' in some sense to be accepted into Wikidata? (I'm imagining a research body wanting to offer very precise place or event data, or someone with the ambition to include in Wikidata details of any person who ever lived.) 3. is there a template for each entity type (e.g. person, place, event) which guarantees that a query for certain properties will at least identify entities of the desired type? (My artist termlist query includes a test '$s ps:P31 wd:Q5' which picks out humans: I'm not clear how I would do the same for events or places.) Thanks, Richard [1] https://query.wikidata.org/#{SPARQL} [2] https://query.wikidata.org/sparql?query={SPARQL} [3] http://www.wikidata.org/entity/Q2591521 [4] Q2591521 -- *Richard Light*

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Re: [Wikidata-tech] Wikidata-tech Digest, Vol 38, Issue 9
by Jorge Hernandez 29 Jun '16

29 Jun '16

Hello Wiki Tinkers, I really enjoy reading about the Wikidata SPRQL sandbox, & related functionalities, I want to start importing some related queries that I have developed so far, (i.e., for open source development purposes). These can help in some way, and the mostly attribute to spatial type of data ( i.e., coordinate referenced) Thanks for helping with further conceptualizing this service & community, Yours Truly, Jorge A. Hernandez On Mon, Jun 27, 2016 at 5:18 AM, <wikidata-tech-request(a)lists.wikimedia.org> wrote: > Send Wikidata-tech mailing list submissions to > wikidata-tech(a)lists.wikimedia.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.wikimedia.org/mailman/listinfo/wikidata-tech > or, via email, send a message with subject or body 'help' to > wikidata-tech-request(a)lists.wikimedia.org > > You can reach the person managing the list at > wikidata-tech-owner(a)lists.wikimedia.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Wikidata-tech digest..." > > > Today's Topics: > > 1. Wikidata for cultural heritage? (Richard Light) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 19 Jun 2016 12:27:53 +0100 > From: Richard Light <richard(a)light.demon.co.uk> > To: Wikidata technical discussion <wikidata-tech(a)lists.wikimedia.org> > Subject: [Wikidata-tech] Wikidata for cultural heritage? > Message-ID: <5f207c98-e758-643f-a249-a3ed3a7e0f8f(a)light.demon.co.uk> > Content-Type: text/plain; charset="utf-8"; Format="flowed" > > Hi, > > My view is that, in order for there to be any point in cultural heritage > bodies (museums, libraries, archives, historians) publishing their > collections etc. as Linked Data, there needs to be a common Linked Data > framework representing the historical space-time universe, which they > can all quote. Current practice (such as the British Museum Linked Data > offering) suggests that concepts such as people, places and events will > otherwise be represented either by useless string values or by > system-specific URLs which have no wider meaning. > > As a result, I would like to explore the potential for Wikidata to act > as this lingua franca for the cultural heritage community. > > You'll see from my earlier messages to this list that I have been > grappling with the SPARQL end-point. Initially I was confused by the > interactive version of the Query Service [1], which differs in its > response format from the similarly-URLed end-point and doesn't provide > an RDF/XML response. I have now managed to set up Wikidata as a 'web > termlist' service for artists, within the Modes software (see attached > screenshot). (The data in the pop-up window is generated on the fly from > the Wikidata RDF.) > > At this point, I have the following questions: > > 1. what level of stability is planned as regards Wikidata > identifiers/URLs? Can I treat the full URL (e.g.[3]) as persistent, or > can I only rely on the core Wikidata identifier (e.g. [4]) remaining > unchanged into the indefinite future? (Can I even rely on that?) > > 2. what is the policy on inclusivity? Do entities need to be 'notable' > in some sense to be accepted into Wikidata? (I'm imagining a research > body wanting to offer very precise place or event data, or someone with > the ambition to include in Wikidata details of any person who ever lived.) > > 3. is there a template for each entity type (e.g. person, place, event) > which guarantees that a query for certain properties will at least > identify entities of the desired type? (My artist termlist query > includes a test '$s ps:P31 wd:Q5' which picks out humans: I'm not clear > how I would do the same for events or places.) > > Thanks, > > Richard > > [1] https://query.wikidata.org/#{SPARQL} > [2] https://query.wikidata.org/sparql?query={SPARQL} > [3] http://www.wikidata.org/entity/Q2591521 > [4] Q2591521 > -- > *Richard Light* >

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RDF/XML response from SPARQL query?
by Richard Light 21 Jun '16

21 Jun '16

Hi, I have just been exercising the SPARQL end-point [1], and have successfully retrieved birth and death details for artists mentioned in the ODNB. That is great, and I am really pleased about it. However, I would ideally like my CONSTRUCT statement to produce a machine-processible result, and for me that would mean RDF/XML. Is there an argument I can add to the URL below which would have the effect of returning a RDF/XML response? Thanks, Richard [1] https://query.wikidata.org/#PREFIX%20wd%3A%20%3Chttp%3A%2F%2Fwww.wikidata.o… -- *Richard Light*

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URL strategy
by Richard Light 18 Jun '16

18 Jun '16

Hi, I'm trying to get to grips with using Wikidata as a Linked Data resource, and would welcome some guidance. Using the SPARQL end-point [1], I submit a query which looks for people: PREFIX ps: <http://www.wikidata.org/prop/statement/> PREFIX wd: <http://www.wikidata.org/entity/> describe ?s where {?s ps:P31 wd:Q5 . } limit 100 The results give a set of wd:statement URLs (e.g. [2]), each of which has the required 'P31 Q5' property and four others (wikibase:rank, rdf:type and a couple of 'derived from' properties). So this looks like a simple statement, which is in some sense a property of the person I am looking for. I would then expect to refine my SPARQL query to pick up the person about whom this statement was made, and thereby get access to their other properties. However, when I dereference the statement URL, I find that I have magically arrived at the URL of the person themselves [3]. While this is all very clever, it leaves me at a loss as to how I can access the properties of the person using SPARQL. Thanks, Richard [1] https://query.wikidata.org/ [2] http://www.wikidata.org/entity/statement/q23-935f9100-47ca-f387-7946-45f9db… [3] https://www.wikidata.org/wiki/Q23 when accessed through the browser, or https://www.wikidata.org/wiki/Special:EntityData/q23 when accessed through curl with a suitable Accept header -- *Richard Light*

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Re: [Wikidata-tech] [ANNOUNCEMENT] StrepHit 1.0 Beta Release (Benjamin Good)
by Satya Gadepalli 16 Jun '16

16 Jun '16

Can this be used as factoid QA System? thx

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