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Today's Topics:
1. Weekly Summary #278 (Léa Lacroix)
2. How to split a label by whitespace in WDQS ? (Thad Guidry)
3. Re: How to split a label by whitespace in WDQS ? (Marco Neumann)
4. Re: How to split a label by whitespace in WDQS ?
(Nicolas VIGNERON)
5. Re: How to split a label by whitespace in WDQS ?
(Lucas Werkmeister)
6. Re: How to split a label by whitespace in WDQS ? (Thad Guidry)
7. Categories in RDF/WDQS (Stas Malyshev)
------------------------------------------------------------ ----------
Message: 1
Date: Mon, 18 Sep 2017 17:36:38 +0200
From: Léa Lacroix <lea.lacroix@wikimedia.de>
To: "Discussion list for the Wikidata project."
<wikidata@lists.wikimedia.org>
Subject: [Wikidata] Weekly Summary #278
Message-ID:
<CAERksTZPK-wMkwcr4hXBTA3TPTQcBPntN3dHFpZJ >1798eM4oYQ@mail.gmail.com
Content-Type: text/plain; charset="utf-8"
*Here's your quick overview of what has been happening around Wikidata over
the last week.*Events
<https://www.wikidata.org/wiki/Special:MyLanguage/ >/Wikidata:Events
Press/Blogs
<https://www.wikidata.org/wiki/Special:MyLanguage/ >Wikidata:Press_coverage
- Upcoming: Wikidata Wahldaten Workshop 2017
<https://www.wikidata.org/wiki/Wikidata:Events/Wikidata_ >Wahldaten_Workshop_2017
– 30 September 2017 in Vienna, Austria
- Upcoming: Wikimedia Research Showcase
<https://meta.wikimedia.org/wiki/Wikimedia_Research/ >Showcase#September_2017
- Past: Wikidata workshop in Zurich
<https://www.wikidata.org/wiki/Wikidata:Events/Wikidata_ > (theZurich
slides of the speakers are linked on the page)
- Past: GLAMhack Wikidata workshop in Lausanne (see the slides of the Query
Service introduction
<https://docs.google.com/presentation/d/ >1hwUBbtP0TppAKrEpjtSjdOXePZ_ 7OIRNDWsAHzVk0NA/edit#slide= id.g1f4d0124c0_0_0
)
- Past: Wikidata workshop in Kolkata
<https://www.wikidata.org/wiki/Wikidata:Events/Wikidata_ >,workshop_Kolkata_2017
India
- Bridging real and fictional worlds
<https://medium.com/wiki-playtime/bridging-real-and- >fictional-worlds-1af32ee65a26
in Wikidata, by Martin Poulter
- Weekend at the Museum (of Brittany)
<https://www.lehir.net/weekend-at-the-museum-of- >, by Envel Lebrittany/
Hir <https://www.wikidata.org/wiki/User:Envlh >
- Wiki Loves Monuments und Wikidata
<http://archivalia.hypotheses.org/67371 >, by SW
- The French Connection at the Wikimania 2017 Hackathon
<https://www.lehir.net/the-french-connection-at-the- >,wikimania-2017-hackathon/
by Envel Le Hir <https://www.wikidata.org/wiki/User:Envlh >
Other Noteworthy Stuff
- Wikidata ontology explorer
<https://lucaswerkmeister.github.io/wikidata-ontology- >:explorer/
creates a tree of a class or property, shows common properties and
statements
- Join the mysterious group of Wikidata:Flashmob
<https://www.wikidata.org/wiki/Wikidata:Flashmob > who improve labels, or
summon them on an item
- A breaking change to the *wbcheckconstraints* API output format was
announced
<https://www.wikidata.org/wiki/Wikidata:Project_chat# >BREAKING_CHANGE:_ wbcheckconstraints_API_output_ format
- Q40000000 <https://www.wikidata.org/wiki/Q40000000 > was created
- Improvements coming soon to Recent Changes
<https://www.wikidata.org/wiki/Wikidata:Project_chat# >Improvements_coming_soon_to_ Recent_Changes
- Several new catalogs in Mix'n'Match
<https://tools.wmflabs.org/mix-n-match/#.2Fcatalog.2F547 > incl.
Encyclopædia Britannica, National Gallery artists and ArtCyclopedia
Did you know?
- Newest properties
<https://www.wikidata.org/wiki/Special:ListProperties >: United Nations
Treaty Series Registration Number
<https://www.wikidata.org/wiki/Property:P4231 >, Sefaria ID
<https://www.wikidata.org/wiki/Property:P4230 >, ICD-10-CM
<https://www.wikidata.org/wiki/Property:P4229 >, Encyclopedia of
Australian Science ID
<https://www.wikidata.org/wiki/Property:P4228 >, Indonesian
Small Islands Directory ID <https://www.wikidata.org/wiki/Property:P4227 >,
Cyworld ID <https://www.wikidata.org/wiki/Property:P4226 >, IPA Braille
<https://www.wikidata.org/wiki/Property:P4225 >, category contains
<https://www.wikidata.org/wiki/Property:P4224 >, Enciclopedia Italiana ID
<https://www.wikidata.org/wiki/Property:P4223 >, United Nations Treaty
Series Volume Number
<https://www.wikidata.org/wiki/Property:P4222 >, National
Criminal Justice ID <https://www.wikidata.org/wiki/Property:P4221 >, order
of battle <https://www.wikidata.org/wiki/Property:P4220 >, Tyrolean Art
Cadastre inventory ID <https://www.wikidata.org/wiki/Property:P4219 >, shelf
life <https://www.wikidata.org/wiki/Property:P4218 >, UK Electoral
Commission ID <https://www.wikidata.org/wiki/Property:P4217 >, LNB Pro A
player ID <https://www.wikidata.org/wiki/Property:P4216 >, nLab ID
<https://www.wikidata.org/wiki/Property:P4215 >, highest observed lifespan
<https://www.wikidata.org/wiki/Property:P4214 >, Unicode hex codepoint
<https://www.wikidata.org/wiki/Property:P4213 >, PACTOLS thesaurus ID
<https://www.wikidata.org/wiki/Property:P4212 >, Bashkir encyclopedia
(Russian version) ID <https://www.wikidata.org/wiki/Property:P4211 >, Bashkir
encyclopedia (Bashkir version) ID
<https://www.wikidata.org/wiki/Property:P4210 >
- Query examples:
- Algorithms and the problems they solve
<https://query.wikidata.org/#SELECT%20%3Falgorithm%20% >3FalgorithmLabel%20%20% 3FprobLabel%0A%7B%0A%09% 3Falgorithm%20wdt%3AP2159%20% 3Fprob%20.%0A%09SERVICE% 20wikibase%3Alabel%20%7B%20bd% 3AserviceParam%20wikibase% 3Alanguage%20%22en%2Cen%22%20% 20%7D%20%20%20%20%0A%7D
(source <https://twitter.com/WikiDigi/status/908717947937591298 >)
- Swiss items with article in exactly one of German-, French-,
Italian-, and Romansh-language Wikipedias
<https://query.wikidata.org/#%23%20map%20of%20Swiss%20items% >20with%20article%20in% 20exactly%20one%20of%20German- %2C%20French-%2C%20Italian-% 2C%20and%20Romansh-language% 20Wikipedias%0A%23defaultView% 3AMap%0ASELECT%20%3Fitem%20% 28SAMPLE%28%3Ftitle%29%20AS% 20%3FitemLabel%29%20%28SAMPLE% 28%3Flocation%29%20AS%20% 3Flocation%29%20%28SAMPLE%28% 3Flanguage%29%20AS%20%3Flayer% 29%20WITH%20%7B%0A%20% 20SELECT%20%2a%20WHERE%20%7B% 0A%20%20%20%20wd%3AQ39%20p% 3AP1332%2Fpsv%3AP1332% 2Fwikibase%3AgeoLatitude%20% 3Fn%3B%0A%20%20%20%20%20%20% 20%20%20%20%20p%3AP1333%2Fpsv% 3AP1333%2Fwikibase% 3AgeoLatitude%20%3Fs%3B%0A%20% 20%20%20%20%20%20%20%20%20% 20p%3AP1334%2Fpsv%3AP1334% 2Fwikibase%3AgeoLongitude%20% 3Fe%3B%0A%20%20%20%20%20%20% 20%20%20%20%20p%3AP1335%2Fpsv% 3AP1335%2Fwikibase% 3AgeoLongitude%20%3Fw.%0A%20% 20%7D%0A%7D%20AS%20% 25switzerlandBoundingBox% 20WHERE%20%7B%0A%20%20VALUES% 20%3Fwiki%20%7B%20%3Chttps%3A% 2F%2Fde.wikipedia.org%2F%3E% 20%3Chttps%3A%2F%2Ffr. wikipedia.org%2F%3E%20% 3Chttps%3A%2F%2Fit.wikipedia. org%2F%3E%20%3Chttps%3A%2F% 2Frm.wikipedia.org%2F%3E%20% 7D%0A%20%20%3Fitem%20wdt% 3AP17%20wd%3AQ39%3B%0A%20%20% 20%20%20%20%20%20wdt%3AP625% 20%3Flocation.%0A%20%20% 3Farticle%20a%20schema% 3AArticle%3B%0A%20%20%20%20% 20%20%20%20%20%20%20schema% 3Aabout%20%3Fitem%3B%0A%20%20% 20%20%20%20%20%20%20%20% 20schema%3AisPartOf%20%3Fwiki% 3B%0A%20%20%20%20%20%20%20%20% 20%20%20schema%3AinLanguage% 20%3Flanguage%3B%0A%20%20%20% 20%20%20%20%20%20%20%20schema% 3Aname%20%3Ftitle.%0A%20%20% 23%20filter%20out%20some% 20stray%20results%20that% 20have%20country% 20Switzerland%20but% 20coordinates%20outside%20it% 20%28e.%E2%80%AFg.%20rivers% 29%0A%20%20INCLUDE%20% 25switzerlandBoundingBox.%0A% 20%20BIND%28geof%3Alatitude% 28%3Flocation%29%20AS%20% 3Flat%29%0A%20%20BIND%28geof% 3Alongitude%28%3Flocation%29% 20AS%20%3Flon%29%0A%20% 20FILTER%28%3Fs%20%3C%3D%20% 3Flat%20%26%26%20%3Flat%20%3C% 3D%20%3Fn%20%26%26%0A%20%20% 20%20%20%20%20%20%20%3Fw%20% 3C%3D%20%3Flon%20%26%26%20% 3Flon%20%3C%3D%20%3Fe%29%0A% 7D%0AGROUP%20BY%20%3Fitem% 0AHAVING%28COUNT%28DISTINCT% 20%3Fwiki%29%20%3D%201%29
(source <https://twitter.com/WikidataFacts/status/ >)908444126999441408
- Popular gender-neutral given names
<https://query.wikidata.org/#%23%20names%20that%20were% >20used%20gender-neutrally% 20among%20people%20on% 20Wikidata%0ASELECT%20%3Fname% 20%3FnameLabel%20%3Fwomen%20% 3Ftotal%20%3Fratio%20%28ABS% 28%3Fratio-0.5%29%20AS%20% 3FdiffFrom5050%29%20WHERE%20% 7B%0A%20%20%7B%0A%20%20%20% 20SELECT%20%3Fname%20%28COUNT% 28%2a%29%20AS%20%3Ftotal%29% 20%28SUM%28%3Fwoman%29%20AS% 20%3Fwomen%29%20%28SUM%28% 3Fwoman%29%2FCOUNT%28%2a%29% 20AS%20%3Fratio%29%20WHERE%20% 7B%20%23%20should%20be%20%28% 3Fwomen%2F%3Ftotal%20AS%20% 3Fratio%29%20%E2%80%93%20see% 20T172113%0A%20%20%20%20%20% 20%3Fperson%20wdt%3AP31%20wd% 3AQ5%3B%0A%20%20%20%20%20%20% 20%20%20%20%20%20%20%20wdt% 3AP735%20%3Fname%3B%0A%20%20% 20%20%20%20%20%20%20%20%20%20% 20%20wdt%3AP21%20% 3FsexOrGender%3B%0A%20%20%20% 20%20%20%20%20%20%20%20%20%20% 20wdt%3AP569%20%3Fdob.%0A%20% 20%20%20%20%20BIND%28IF%28% 3FsexOrGender%20IN%20%28wd% 3AQ6581072%2C%20wd%3AQ1052281% 29%2C%201%2C%200%29%20AS%20% 3Fwoman%29%0A%20%20%20%20%7D% 0A%20%20%20%20GROUP%20BY%20% 3Fname%0A%20%20%20%20HAVING% 28%3Ftotal%20%3E%3D%2010%20% 26%26%200.4%20%3C%3D%20% 3Fratio%20%26%26%20%3Fratio% 20%3C%3D%200.6%29%20%23% 20arbitrary%20limits%2C% 20feel%20free%20to%20tweak%0A% 20%20%7D%0A%20%20SERVICE% 20wikibase%3Alabel%20%7B%20bd% 3AserviceParam%20wikibase% 3Alanguage%20%22%5BAUTO_ LANGUAGE%5D%2Cen%22.%20%7D%0A% 7D%0AORDER%20BY%20DESC%28% 3Ftotal%29
(source <https://twitter.com/WikidataFacts/status/ >)907740126150873089
- Computer network protocols and their ports
<https://query.wikidata.org/#%0ASELECT%20%3Fitem%20% >3FitemLabel%20%3FportLabel% 0AWHERE%20%0A%7B%0A%20%20% 3Fitem%20wdt%3AP31%20wd% 3AQ15836568%20.%0A%20%20% 3Fitem%20wdt%3AP1641%20% 3Fport%20.%0A%20%20SERVICE% 20wikibase%3Alabel%20%7B%20bd% 3AserviceParam%20wikibase% 3Alanguage%20%22%5BAUTO_ LANGUAGE%5D%2Cen%22.%20%7D%0A% 7D
(source <https://twitter.com/WikiDigi/status/907614182564036609 >)
- Software developers by number of software titles
<https://query.wikidata.org/#%23defaultView%3ABubbleChart% >0ASELECT%20%3Fdeveloper%20% 3FdeveloperLabel%20%28COUNT% 28%3Fsoftware%29%20AS%20% 3Fcount%29%20WHERE%20%7B%0A% 20%20%3Fsoftware%20%28p%3AP31% 2Fps%3AP31%2Fwdt%3AP279%2a%29% 20wd%3AQ7397.%0A%20%20% 3Fsoftware%20wdt%3AP178%20% 3Fdeveloper.%0A%20%20SERVICE% 20wikibase%3Alabel%20%7B%20bd% 3AserviceParam%20wikibase% 3Alanguage%20%22en%22.%20%7D% 0A%7D%0AGROUP%20BY%20% 3Fdeveloper%20% 3FdeveloperLabel%0AORDER%20BY% 20DESC%28%3Fcount%29%0ALIMIT% 20100
(source <https://twitter.com/WikiDigi/status/907961753606045696 >)
- Spacecraft and what they were named after
<https://query.wikidata.org/#SELECT%20DISTINCT%20%3Fobj%20% >3FobjLabel%20% 3FobjDescription%20%3Fnom%20% 3FnomLabel%20% 3FnomDescription%0AWHERE%20% 7B%0A%7B%3Fobj%20wdt%3AP31% 2Fwdt%3AP279%2a%20wd%3AQ40218% 20%7D%20%23%20type%20of% 20spacecraft%0AUNION%20%7B%20% 3Fobj%20wdt%3AP31%2Fwdt% 3AP279%2a%20wd%3AQ13226541%20% 7D%20%23%20or%20spaceflight% 20programme%0A%3Fobj%20wdt% 3AP138%20%3Fnom%20%23named% 20after%0ASERVICE%20wikibase% 3Alabel%20%7B%20bd% 3AserviceParam%20wikibase% 3Alanguage%20%22%5BAUTO_ LANGUAGE%5D%2Cen%22%20%7D%0A% 7D%20ORDER%20BY%20ASC%28% 3FobjLabel%29
(source <https://twitter.com/mlpoulter/status/ >)908774078080802818
- Newest WikiProjects
<https://www.wikidata.org/wiki/Special:MyLanguage/ >:Wikidata:WikiProjects
WikiProject property constraints
<https://www.wikidata.org/wiki/Wikidata:WikiProject_ >property_constraints
Development
- Worked more on the constraints gadget in order to make it also qork
for references and qualifiers
- Made progress on persistently storing edits for the new Lexeme entity
type (next to items and properties)
- Worked on the RDF mapping for full URIs of external identifiers (
phabricator:T121274 <https://phabricator.wikimedia.org/T121274 >)
You can see all open tickets related to Wikidata here
<https://phabricator.wikimedia.org/maniphest/query/ >.4RotIcw5oINo/#R
Monthly Tasks
- Add labels, in your own language(s), for the new properties listed
above.
- Comment on property proposals: all open proposals
<https://www.wikidata.org/wiki/Wikidata:Property_ >proposal/Overview
- Suggested and open tasks
<https://www.wikidata.org/wiki/Wikidata:Contribute/ >Suggested_and_open_tasks
!
- Contribute to a Showcase item
<https://www.wikidata.org/wiki/Special:MyLanguage/ >Wikidata:Showcase_items
.
- Help translate <https://www.wikidata.org/wiki/Special:LanguageStats >
or proofread the interface and documentation pages, in your own language!
- Help merge identical items
<https://www.wikidata.org/wiki/User:Pasleim/projectmerge > across
Wikimedia projects.
- Help write the next summary!
<https://www.wikidata.org/wiki/Wikidata:Status_updates/ >Next
--
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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Message: 2
Date: Mon, 18 Sep 2017 12:07:54 -0500
From: Thad Guidry <thadguidry@gmail.com>
To: "Discussion list for the Wikidata project."
<wikidata@lists.wikimedia.org>
Subject: [Wikidata] How to split a label by whitespace in WDQS ?
Message-ID:
<CAChbWaNq-asLsBvX4oZvdrkE9FwtKeT=b_p_ UfR7q0T88JXe+A@mail.gmail.com >
Content-Type: text/plain; charset="utf-8"
Say I have this query...
SELECT ?human ?label
WHERE
{
?human wdt:P31 wd:Q15632617; rdfs:label ?label.
FILTER(LANG(?label) = "en").
FILTER(STRSTARTS(?label, "Mr. ")).
}
What if I wanted to see if any one of a humans name ends with "y" such as
my last name does , their first, last, doesn't matter. I have a "d" and a
"y" on the array returned from my name (if it were split by whitespace)
I did not see any special syntax or FILTER or Label service commands to
help with splitting apart a Label by whitespace and then applying a filter
on each string.
How would I accomplish this ?
Thad
+ThadGuidry <https://www.google.com/+ThadGuidry >
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Message: 3
Date: Mon, 18 Sep 2017 13:32:20 -0400
From: Marco Neumann <marco.neumann@gmail.com>
To: "Discussion list for the Wikidata project."
<wikidata@lists.wikimedia.org>
Subject: Re: [Wikidata] How to split a label by whitespace in WDQS ?
Message-ID:
<CABWJn4S+V1m_trwQLGAUJaduOXhUzE84CHPTgoKVV0 >GoZ0BRnQ@mail.gmail.com
Content-Type: text/plain; charset="UTF-8"
this covers some of your query
SELECT ?human ((substr(?label,"0","4")) AS ?title) (substr(?label,"4")
AS ?name) (strEnds( (substr(?name,"4")),"y") AS ?nameEndsWithY )
WHERE
{
?human wdt:P31 wd:Q15632617; rdfs:label ?label.
FILTER(LANG(?label) = "en").
FILTER(STRSTARTS(?label, "Mr. ")).
}
On Mon, Sep 18, 2017 at 1:07 PM, Thad Guidry <thadguidry@gmail.com> wrote:
>
> Say I have this query...
>
> SELECT ?human ?label
> WHERE
> {
> ?human wdt:P31 wd:Q15632617; rdfs:label ?label.
> FILTER(LANG(?label) = "en").
> FILTER(STRSTARTS(?label, "Mr. ")).
> }
>
> What if I wanted to see if any one of a humans name ends with "y" such as my
> last name does , their first, last, doesn't matter. I have a "d" and a "y"
> on the array returned from my name (if it were split by whitespace)
>
> I did not see any special syntax or FILTER or Label service commands to help
> with splitting apart a Label by whitespace and then applying a filter on
> each string.
>
> How would I accomplish this ?
>
> Thad
> +ThadGuidry
>
> _______________________________________________
> Wikidata mailing list
> Wikidata@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikidata
>
--
---
Marco Neumann
KONA
------------------------------
Message: 4
Date: Mon, 18 Sep 2017 19:49:30 +0200
From: Nicolas VIGNERON <vigneron.nicolas@gmail.com>
To: "Discussion list for the Wikidata project."
<wikidata@lists.wikimedia.org>
Subject: Re: [Wikidata] How to split a label by whitespace in WDQS ?
Message-ID:
<CANTrCmj=Jgy9VOOPOhc+VE7iJ6iznOe9K6dcGrzGFTLQMFuiOg >@mail.gmail.com
Content-Type: text/plain; charset="utf-8"
Hi
[snip]
>
> I did not see any special syntax or FILTER or Label service commands to
help with splitting apart a Label by whitespace and then applying a filter
on each string.
>
> How would I accomplish this ?
Maybe with the function STRAFTER
https://www.w3.org/TR/sparql11-query/#func-strafter
Example of use:
SELECT ?item ?itemLabel ?itemLabelafter WHERE {
?item wdt:P19 wd:Q647 ; rdfs:label ?itemLabel.
FILTER (lang(?itemLabel) = "fr").
BIND ( STRAFTER(?itemLabel, " ") AS ?itemLabelafter )
}
LIMIT 10
Cdlt, ~nicolas
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Message: 5
Date: Mon, 18 Sep 2017 20:11:25 +0200
From: Lucas Werkmeister <mail@lucaswerkmeister.de>
To: wikidata@lists.wikimedia.org
Subject: Re: [Wikidata] How to split a label by whitespace in WDQS ?
Message-ID: <4ae316f1-2f7b-397f-0f59-36cd62343d11@lucaswerkmeister. >de
Content-Type: text/plain; charset="utf-8"
I don’t think there’s any SPARQL function that can transform a single
result into multiple results (one for each string fragment, in that
case). But for your request, a regex works:
SELECT ?human ?label WHERE {
?human wdt:P31 wd:Q15632617;
rdfs:label ?label.
FILTER(LANG(?label) = "en")
FILTER(REGEX(?label, "y\\s"))
}
Link
<https://query.wikidata.org/#SELECT%20%3Fhuman%20%3Flabel% >20WHERE%20%7B%0A%20%20% 3Fhuman%20wdt%3AP31%20wd% 3AQ15632617%3B%0A%20%20%20%20% 20%20%20%20%20rdfs%3Alabel%20% 3Flabel.%0A%20%20FILTER% 28LANG%28%3Flabel%29%20%3D%20% 22en%22%29%0A%20%20FILTER% 28REGEX%28%3Flabel%2C%20%22y% 5C%5Cs%22%29%29%0A%7D
On 18.09.2017 19:07, Thad Guidry wrote:
>
> Say I have this query...
>
> SELECT ?human ?label
> WHERE
> {
> ?human wdt:P31 wd:Q15632617; rdfs:label ?label.
> FILTER(LANG(?label) = "en").
> FILTER(STRSTARTS(?label, "Mr. ")).
> }
>
> What if I wanted to see if any one of a humans name ends with "y" such
> as my last name does , their first, last, doesn't matter. I have a
> "d" and a "y" on the array returned from my name (if it were split by
> whitespace)
>
> I did not see any special syntax or FILTER or Label service commands
> to help with splitting apart a Label by whitespace and then applying a
> filter on each string.
>
> How would I accomplish this ?
>
> Thad
>
> +ThadGuidry <https://www.google.com/+ThadGuidry >
>
>
> _______________________________________________
> Wikidata mailing list
> Wikidata@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikidata
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Message: 6
Date: Mon, 18 Sep 2017 13:36:23 -0500
From: Thad Guidry <thadguidry@gmail.com>
To: "Discussion list for the Wikidata project."
<wikidata@lists.wikimedia.org>
Subject: Re: [Wikidata] How to split a label by whitespace in WDQS ?
Message-ID:
<CAChbWaMF+c9QtHL-4sWWGs37RjRfFcU0HQV3EiyaU0Qcq6 >7xAg@mail.gmail.com
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Nicolas,
This is close to what I am needing and wanting.
But how to get record rows for each word within a label ?
It would be amazing if the Wikidata Label service already had the wiring to
perform that and we could ask for "words" from each label.
Thoughts on how to do with without the enhancement request for the Label
service ?
Thad
+ThadGuidry <https://www.google.com/+ThadGuidry >
On Mon, Sep 18, 2017 at 12:49 PM, Nicolas VIGNERON <
vigneron.nicolas@gmail.com> wrote:
> Hi
>
> [snip]
>
> >
> > I did not see any special syntax or FILTER or Label service commands to
> help with splitting apart a Label by whitespace and then applying a filter
> on each string.
> >
> > How would I accomplish this ?
>
> Maybe with the function STRAFTER https://www.w3.org/TR/
> sparql11-query/#func-strafter
>
> Example of use:
>
> SELECT ?item ?itemLabel ?itemLabelafter WHERE {
> ?item wdt:P19 wd:Q647 ; rdfs:label ?itemLabel.
> FILTER (lang(?itemLabel) = "fr").
> BIND ( STRAFTER(?itemLabel, " ") AS ?itemLabelafter )
> }
> LIMIT 10
>
> Cdlt, ~nicolas
>
> _______________________________________________
> Wikidata mailing list
> Wikidata@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikidata
>
>
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Message: 7
Date: Mon, 18 Sep 2017 17:23:42 -0700
From: Stas Malyshev <smalyshev@wikimedia.org>
To: "Discussion list for the Wikidata project."
<wikidata@lists.wikimedia.org>, Wikimedia developers
<wikitech-l@lists.wikimedia.org >
Subject: [Wikidata] Categories in RDF/WDQS
Message-ID: <8e0b0314-cf01-eae4-5ae7-088496c74716@wikimedia.org >
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Hi!
I'd like to announce that the category tree of certain wikis is now
available as RDF dump and in Wikidata Query Service.
More documentation is at:
https://www.mediawiki.org/wiki/Wikidata_query_service/ Categories
which I will summarize shortly below.
The dumps are located at
https://dumps.wikimedia.org/other/categoriesrdf/ . You can use these
dumps any way you wish, data format is described at the link above[1].
The same dump is loaded into "categories" namespace in WDQS, which can
be queried by
https://query.wikidata.org/bigdata/namespace/categories/ .sparql?query=SPARQL
Sorry, no GUI support yet (probably will happen later). See example in
the docs[2].
These datasets are not updated automatically yet, so they'll be up to
date roughly for the date of the latest dump. Hopefully soon it will be
automated and then the datasets will be updated daily.
The list of currently supported wikis is here:
https://noc.wikimedia.org/conf/categories-rdf.dblist - these are
basically all 1M+ wikis and couple more that I added for various
reasons. If you have a good candidate wiki to add, please tell me or
write on the talk page for the document above.
Please note this is only the first step for the project, so there might
still be some rough edges. I am announcing it early since I think it
would be useful for people to look at the dumps and SPARQL endpoint and
see if something is missing or does not work properly, and share ideas
on how it can be used.
We plan eventually to use it for search improvement[3] - this work is
still in progress.
As always, we welcome any comments and suggestions.
[1]
https://www.mediawiki.org/wiki/Wikidata_query_service/ Categories#Data_format
[2]
https://www.mediawiki.org/wiki/Wikidata_query_service/ Categories#Accessing_the_data
[3] https://phabricator.wikimedia.org/T165982
Thanks,
--
Stas Malyshev
smalyshev@wikimedia.org
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