Wikidata

User:Daniel Mietchen

There are 118,815,043 content pages on Wikidata, of which 113,721,002 are items and 12,102 properties.
Wikidata URIs for different formats, e.g. https://www.wikidata.org/entity/Q1.rdf or https://www.wikidata.org/wiki/Special:EntityData/Q1.rdf?flavor=simple.
Wikidata RDF model
Lexicographic data on Wikidata, and tools around that
Tool for visualizing the contribution history on Wikipedia
Wikidatatrust, a tool for visualizing who contributed to which Wikidata statement

I am a biophysicist (Q14906342) interested in integrating research workflow (Q115682347) with online collaboration (Q116095133) — particularly if they relate to biodiversity (Q47041), medicine (Q11190), mathematics (Q395), cultural heritage (Q210272) or open science (Q309823). My contributions here cover similar topics, with a focus on scholarly publications as sources for statements in Wikidata, and the integration of scholarly and Wikimedia workflows more generally.

My most recent affiliations are as follows (see my ORCID profile for details):

I enjoy most of the interactions with the Wikidata community, which sometimes trigger wiki thanks.

For semi-automated or tool-assisted edits, I am experimenting with a separate account over at User:Research Bot.

Wikidata stats

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Wikidata statistics
 
  Number of pages 118,815,043  
  User total 6,618,225  
  Active users list 23,743  
  Administrators 74  
  Users/administrator 321  


Most recently created pages

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The ten most recently created items

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1 September 2024


The ten most recently created properties

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31 August 2024

30 August 2024

29 August 2024

27 August 2024

24 August 2024


The ten most recently created lexemes

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See also Wikidata:Lexical Masks.

1 September 2024

31 August 2024


The ten most recently created pages in the Wikidata namespace

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1 September 2024

31 August 2024


The ten most recently created pages in the Entity schema namespace

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See also Special:NewEntitySchema, the Schema directory, a list of schemas and Schema visualization as well as YASHE.

18 August 2024

16 August 2024

5 August 2024


Properties I am interested in

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As per Wikidata:Database reports/birthday today:

 

Itzhak Perlman (1945-08-31)
Jaffa

 

Van Morrison (1945-08-31)
Belfast

 

Richard Gere (1949-08-31)
Philadelphia

 

Angelique Rockas (1951-08-31)
Boksburg

 

Robert Kocharyan (1954-08-31)
Stepanakert

 

Tsai Ing-wen (1956-08-31)
Zhongshan District

 

Éric Zemmour (1958-08-31)
Montreuil

 

Hassan Nasrallah (1960-08-31)
Bourj Hammoud

End of automatically generated list.

See also

Arbitrary access

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Other stuff

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Topic Pages

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The PLoS Computational Biology articles serving as the basis for Wikipedia entries should be properly represented at Wikidata, which they are not yet. Dumping the list here for the moment - help is welcome.

These should link to the respective topic items via "main subject".

PAWS

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Demos

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Wikidata lists

Templates

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Genome annotation releases

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Ontologies

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SPARQL

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Interesting papers

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Most viewed Wikidata pages

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Wikidata and Commons

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Property constraints

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Properties around topics and research fields

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QuickStatementsBot and Reinheitsgebot

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Yet more to dig into

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Labels, descriptions, aliases per language

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Data Drainer

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Cradle

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Bugs to report

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Italics in titles not recognized upon import

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See also this discussion and its on-wiki counterpart.

Phenotype
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Origin of the problem
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Variants of the problem
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Flagging
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See also Help:Ranking and Help:Deprecation and usage stats for deprecated rank as well as for preferred rank

Examples
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The problem may not be apparent from what is currently displayed here, so it is advisable to check the version history for the items in question.

MathML in titles

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e.g.

No auto-relinking after merging of lexemes?

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Quality control and maintenance for WikiProjects

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Wikidata
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English Wikipedia
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Wrong translations

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MediaWiki graphs based on Wikidata query

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Multilingual Wikipedia

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Game to add senses to lexemes

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Game to add descriptions to items

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Learning game based on Wikidata SPARQL queries

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Optimizing SPARQL queries

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Wikidata blame

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Template:Compare Wikidata with CSV

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The Book

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  • shows the first paragraph and first image for a set of articles on the same page, just like in old lexica
  • examples:

Search properties

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Clickstream data visualizations

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Topic tagging for taxa

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Image tagging for works

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srsearch

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gsrsearch

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DOI queries for citations

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  • The following query uses these:
  • Properties: describes a project that uses (P4510)     , DOI (P356)     
    #title: DOIs of works that are describing a project that uses a given resource
PREFIX target: <http://www.wikidata.org/entity/Q112063555>

SELECT DISTINCT ?doi
WITH {
  SELECT DISTINCT ?work WHERE {
    ?work wdt:P4510 target: .
  }
} AS %works
WHERE {
  INCLUDE %works
  ?work wdt:P356 ?doi .
}
DOIs of works that are describing a project that uses a given resource
  • The following query uses these:
  • Properties: main subject (P921)     , cites work (P2860)     , DOI (P356)     
    #title: DOIs of works that are citing or cited by works on a given topic
PREFIX target: <http://www.wikidata.org/entity/Q112158389> 

SELECT DISTINCT 
# (ENCODE_FOR_URI(?doi_) AS ?doi)
  ?doi_
WITH {
  SELECT  ?cite_work 
  WHERE {
    ?work wdt:P921 target:
    {?cite_work wdt:P2860 ?work .}
    UNION
    {?cite_work ^wdt:P2860 ?work .}
  }
  GROUP BY ?cite_work
} AS %result
WHERE {
  INCLUDE %result
  ?cite_work wdt:P356 ?doi_ .
}
DOIs of works that are citing or cited by works on a given topic
  • The following query uses these:
  • Properties: author (P50)     , cites work (P2860)     , DOI (P356)     
    #title: DOIs of works that are citing or cited by works by a given author
PREFIX target: <http://www.wikidata.org/entity/Q20895785>

SELECT DISTINCT (ENCODE_FOR_URI(?doi_) AS ?doi)
WITH {
  SELECT  ?cite_work 
  WHERE {
    ?work wdt:P50 target:
    {?cite_work wdt:P2860 ?work .}
    UNION
    {?cite_work ^wdt:P2860 ?work .}
  }
  GROUP BY ?cite_work
} AS %result
WHERE {
  INCLUDE %result
  ?cite_work wdt:P356 ?doi_ .
}
DOIs of works that are citing or cited by works by a given author
  • The following query uses these:
  • Properties: cites work (P2860)     , DOI (P356)     
    #title: DOIs of works that are citing or cited by a given work
PREFIX target: <http://www.wikidata.org/entity/Q27340070>

SELECT DISTINCT (ENCODE_FOR_URI(?doi_) AS ?doi)
WITH {
  SELECT  ?cite_work 
  WHERE {
    {?cite_work wdt:P2860 target: .}
    UNION
    {?cite_work ^wdt:P2860 target: .}
  }
  GROUP BY ?cite_work
} AS %result
WHERE {
  INCLUDE %result
  ?cite_work wdt:P356 ?doi_ .
}
DOIs of works that are citing or cited by a given work
  • The following query uses these:
  • Properties: main subject (P921)     , part of (P361)     , facet of (P1269)     , instance of (P31)     , subclass of (P279)     , publication date (P577)     , DOI (P356)     
    #title: DOIs of works that are citing or cited by works one or both of two given topics
PREFIX target1: <http://www.wikidata.org/entity/Q21447895>
PREFIX target2: <http://www.wikidata.org/entity/Q2539>

SELECT ?doi
WITH {
  SELECT DISTINCT ?work WHERE {
    { ?work wdt:P921 / (wdt:P361+ | wdt:P1269+ | (wdt:P31* / wdt:P279*) ) target1: . }
    UNION
    { ?work wdt:P921 / (wdt:P361+ | wdt:P1269+ | (wdt:P31* / wdt:P279*) ) target2: . }
  }
} AS %works
WITH {
  SELECT (MAX(?dates) as ?datetime) ?work 
  WHERE {
    INCLUDE %works
    ?work wdt:P921 ?topic . 
    ?work wdt:P577 ?dates . 
  }
  GROUP BY ?work
} AS %result
WHERE {
  INCLUDE %result
  # There is a problem with BC dates
  # BIND(xsd:date(?datetime) AS ?date)
  BIND(REPLACE(STR(?datetime), 'T.*', '') AS ?date)
  ?work wdt:P356 ?doi .    
}
# GROUP BY ?date ?work ?workLabel ?topicsUrl ?topics
ORDER BY DESC(?date)
LIMIT 200
DOIs of works that are citing or cited by works one or both of two given topics
  • The following query uses these:
  • Properties: published in (P1433)     , cites work (P2860)     , DOI (P356)     
    #title: DOIs of works that are citing or cited by works published in a given venue
PREFIX target: <http://www.wikidata.org/entity/Q15758330>

SELECT DISTINCT (ENCODE_FOR_URI(?doi_) AS ?doi)
WITH {
  SELECT  ?cite_work 
  WHERE {
    ?cite_work wdt:P1433 target: .
    {?cite_work wdt:P2860 target: .}
    UNION
    {?cite_work ^wdt:P2860 target: .}
  }
  GROUP BY ?cite_work
} AS %result
WHERE {
  INCLUDE %result
  ?cite_work wdt:P356 ?doi_ .
}
DOIs of works that are citing or cited by works published in a given venue

Curation query for works, with capitatlization variants

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The following query uses these:

  • Properties: author (P50)     , author name string (P2093)     , object named as (P1932)     
    # tool: scholia
PREFIX target: <http://www.wikidata.org/entity/Q21045365> # Initial Sequencing of the human genome

SELECT
(COUNT(?work) AS ?count) 
?string 
(CONCAT("https://author-disambiguator.toolforge.org/names_oauth.php?doit=Look+for+author&name=", 
        ENCODE_FOR_URI(?string)) AS ?author_resolver_url) 
WITH {
  SELECT DISTINCT ?authorstring WHERE {
    target: wdt:P50 ?authorQID .    
    { target: wdt:P2093 ?authorstring . }
    UNION
    {
      { ?authorQID skos:altLabel ?author_. }
      UNION
      { ?authorQID rdfs:label ?author_. }
      BIND(STR(?author_) AS ?authorstring)
    }
    UNION
    {
      ?author_statement ps:P50 ?authorQID ;
                        pq:P1932 ?authorstring.
    }
  }
  LIMIT 10000
} AS %rawstrings
WITH
# This part is due to Dipsacus fullonum, as per https://w.wiki/5Brk
{
  # Calculate capitalization variants of these raw strings
  SELECT DISTINCT ?string
  WHERE
  {
    {
      INCLUDE %rawstrings
      BIND(STR(?authorstring) AS ?string) # the raw strings
    }
    UNION
    {
      INCLUDE %rawstrings
      BIND(UCASE(STR(?authorstring)) AS ?string) # uppercased versions of the raw strings
    }
    UNION
    {
      INCLUDE %rawstrings
      BIND(LCASE(STR(?authorstring)) AS ?string) # lowercased versions of the raw strings
    }
  }
} AS %normalizedstrings
WHERE {
  # Find works that have "author name string" values equal to these normalized strings
  INCLUDE %normalizedstrings
  ?work wdt:P2093 ?string. 
}
GROUP BY ?string
ORDER BY DESC (?count)
LIMIT 200
Try it!

Usage tagging

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Generic

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Words and phrases frequently occurring after "using" in titles of articles
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The following query uses these:

  • Properties: title (P1476)     
    #title: Words and phrases frequently occurring after "using" in titles of articles
SELECT 
  DISTINCT
    ?using ?N (COUNT(?item) AS ?count)
WHERE {
  hint:Query hint:optimizer "None".
  
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using\" and haswbstatement:P31=Q13442814".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
UNION
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using\" -and haswbstatement:P31=Q13442814".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
  BIND(IRI(CONCAT(STR(wd:), ?page_title)) AS ?item)
  
  ?item wdt:P1476 ?title.
  BIND(STRAFTER(LCASE(?title), "using ") AS ?using) 
  BIND(STRLEN(REPLACE(?using, "\\b", "")) + 1 as ?N)
}
GROUP BY ?using ?N ?count
ORDER BY DESC(?count)
Words and phrases frequently occurring after "using" in titles of articles
Words and phrases frequently occurring after "using" in titles of articles without P4510 statement
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The following query uses these:

  • Properties: title (P1476)     
    #title: Words and phrases frequently occurring after "using" in titles of articles without P4510 statement
SELECT 
  DISTINCT
    ?using ?N (COUNT(?item) AS ?count)
WHERE {
  hint:Query hint:optimizer "None".
  
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using\" and haswbstatement:P31=Q13442814 -haswbstatement:P4510".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
UNION
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using\" -and haswbstatement:P31=Q13442814 -haswbstatement:P4510".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
  BIND(IRI(CONCAT(STR(wd:), ?page_title)) AS ?item)
  
  ?item wdt:P1476 ?title.
  BIND(STRAFTER(LCASE(?title), "using ") AS ?using) 
  BIND(STRLEN(REPLACE(?using, "\\b", "")) + 1 as ?N)
}
GROUP BY ?using ?N ?count
ORDER BY DESC(?count)
Words and phrases frequently occurring after "using" in titles of articles without P4510 statement


Words and phrases frequently occurring after "using" in titles of articles with P4510 statement
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The following query uses these:

  • Properties: title (P1476)     
    #title: Words and phrases frequently occurring after "using" in titles of articles with P4510 statement
SELECT 
  DISTINCT
    ?using ?N (COUNT(?item) AS ?count)
WHERE {
  hint:Query hint:optimizer "None".
  
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using\" and haswbstatement:P31=Q13442814 haswbstatement:P4510".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
UNION
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using\" -and haswbstatement:P31=Q13442814 haswbstatement:P4510".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
  BIND(IRI(CONCAT(STR(wd:), ?page_title)) AS ?item)
  
  ?item wdt:P1476 ?title.
  BIND(STRAFTER(LCASE(?title), "using ") AS ?using) 
  BIND(STRLEN(REPLACE(?using, "\\b", "")) + 1 as ?N)
}
GROUP BY ?using ?N ?count
ORDER BY DESC(?count)
Words and phrases frequently occurring after "using" in titles of articles with P4510 statement

Software

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The following query uses these:

  • Properties: main subject (P921)     , describes a project that uses (P4510)     , programmed in (P277)     , title (P1476)     
    PREFIX target: <http://www.wikidata.org/entity/Q202864>

SELECT ?item ?title ?n #?type ?typeLabel 
WHERE {
 {
   SELECT  DISTINCT ?item ?n WHERE {
     ?paper wdt:P921 target: .
     ?paper wdt:P4510 ?soft .
     ?soft wdt:P277 [] .
     ?soft rdfs:label ?n.
    FILTER(LANG(?n) = "en").
    SERVICE wikibase:mwapi {
      bd:serviceParam wikibase:endpoint "www.wikidata.org";
                      wikibase:api "Generator";
                      mwapi:generator "search";
                      mwapi:gsrsearch ?n ;
                      mwapi:gsrlimit "max".
      ?item wikibase:apiOutputItem mwapi:title .
    }
  } LIMIT 10000
 }
 hint:Prior hint:runFirst "true".
 ?item wdt:P1476 ?title .
} 
LIMIT 1000
Try it!

Ultrasound

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The following query uses these:

  • Properties: title (P1476)     
    SELECT 
  DISTINCT
    ?using ?N (COUNT(?item) AS ?count)
WHERE {
  hint:Query hint:optimizer "None".
  
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using ultrasound\" and haswbstatement:P31=Q13442814 -haswbstatement:P4510".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
UNION
{  SERVICE wikibase:mwapi {
    bd:serviceParam wikibase:api "Search";
                    wikibase:endpoint "www.wikidata.org";
                    mwapi:srsearch "\"using ultrasound\" -and haswbstatement:P31=Q13442814 -haswbstatement:P4510".
      ?page_title wikibase:apiOutput mwapi:title.
  }
 }
  BIND(IRI(CONCAT(STR(wd:), ?page_title)) AS ?item)
  
  ?item wdt:P1476 ?title.
  BIND(STRAFTER(LCASE(?title), "using ultrasound ") AS ?using) 
  BIND(STRLEN(REPLACE(?using, "\\b", "")) + 1 as ?N)
}
GROUP BY ?using ?N ?count
ORDER BY DESC(?count)
Try it!

variants

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Referencing PMC

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The following query uses these:

  • Properties: describes a project that uses (P4510)     , PMC publication ID (P932)     
    SELECT 
  DISTINCT
#   ?item ?pmcid
  (REPLACE(STR(?item), ".*Q", "Q") AS ?qid) 
  ("P4510" AS ?property)
  ("Q70357595" AS ?Jupyter)
  ("S248" AS ?statedin)
  ("Q229883" AS ?PMC)
  ("S854" AS ?heuristic)
  (CONCAT(
      '\"https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pmc&id=PMC', ENCODE_FOR_URI(?pmcid), '&rettype=xml\"') AS ?resolver_url)
  ("S813" AS ?retrieved)
  ("+2022-05-24T00:00:00Z/11" AS ?date)

WHERE {
  ?item wdt:P4510 wd:Q70357595 ;
        wdt:P932 ?pmcid .
}
Try it!

Taxon author name disambiguator

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as per

Autofix testing

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Background

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Test cases

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DOI (P356)
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title (P1476)
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Full-text search

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Central External Resource Scraping and Extraction Infrastructure (CERSEI)

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Wikibase

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ORCID scraper

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Subpages

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Babel user information

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I find the current way of handling this information rather unwieldy, but since it is basically required for editing Wikidata in multiple languages, I'm just pushing it to the bottom of the page, along with some pointers to topics or tools of interest.

Babel user information
 This user is a Participant of the Wikimedians for Sustainable Development
 This user uses Scholia.
 This user is a member of
WikiProject Open Access.
 This user is a member of
WikiProject Mathematics
 This user is a member of
WikiProject Medicine.
 This user is a member of
WikiProject Physics.
 This user is a member of WikiProject Chemistry.
 This user is a member of WikiProject COVID19.
 This user uses QuickStatements.
 This user loves Wikidata.
 This user uses Mix'n'match.
 This user is a member of WikiProject India.
 This user contributes using Firefox.
 This contributor uses Project Jupyter (Q55630549).
 This user shares their books on inventaire.io (Q32193244).
 This user is on GitHub.
Users by language
Babel user information
de-N Dieser Benutzer spricht Deutsch als Muttersprache.
en-4 This user has near native speaker knowledge of English.
fr-4 Cet utilisateur dispose de connaissances proches de la langue maternelle en français.
ru-4 Этот участник владеет русским языком почти как родным.
eo-2 Ĉi tiu uzanto havas meznivelan scion de Esperanto.
es-2 Esta persona tiene un conocimiento intermedio del español.
it-2 Quest'utente può contribuire con un livello intermedio in italiano.
la-2 Hic usor/Haec ustrix lingua Latina mediae difficultatis conferre potest.
nl-2 Deze gebruiker heeft basiskennis van het Nederlands.
sv-2 Den här användaren har medelgoda kunskaper i svenska.
uk-2 Цей користувач володіє українською мовою на середньому рівні.
eo-2 Ĉi tiu uzanto havas meznivelan scion de Esperanto.
af-1 Hierdie gebruiker het basiese kennis van Afrikaans.
ar-1 هذا المستخدم لديه معرفة أساسية بالعربية.
bg-1 Този потребител има основни познания по български език.
ca-1 Aquest usuari té un coneixement bàsic de català.
cs-1 Tento uživatel má základní znalosti češtiny.
da-1 Denne bruger har grundlæggende kendskab til dansk.
el-1 Αυτός ο χρήστης έχει βασικές γνώσεις Ελληνικών.
fa-1 این کاربر فارسی را در حد مقدماتی می‌فهمد.
ja-1 この利用者は初級の日本語ができます。
kk-1 Бұл қатысушы қазақша бастапқы деңгейде меңгереді.
ko-1 이 사용자는 한국어를 조금 할 수 있습니다.
ky-1 Бул колдонуучу кыргыз тилин башталгыч деңгээлде билет.
nb-1 Denne brukeren har grunnleggende kjennskap til norsk bokmål.
pl-1 Ten użytkownik posługuje się językiem polskim na poziomie podstawowym.
pt-1 Este utilizador tem um nível básico de português.
ro-1 Acest utilizator poate contribui cu un nivel de bază de română.
sh-1 Ovaj korisnik zna srpskohrvatski / српскохрватски na osnovnoj razini.
sk-1 Tento užívateľ má základné znalosti slovenčiny.
sl-1 Uporabnik pozna osnove slovenskega jezika.
sw-1 Mtumiaji huyu ni mwongeaji wa Kiswahili cha kiwango cha Msingi.
tg-1 Ин корбар тоҷикӣро дар сатҳи муқаддамотӣ мефаҳмад.
tr-1 Bu kullanıcı temel düzeyde Türkçe bilir.
ur-1 یہ صارف اردو کا بنیادی علم رکھتا ہے۔
uz-1 Bu foydalanuvchi oʻzbek tilini boshlangʻich darajada biladi.
zh-1 这位用户的中文达到初级水平。
ee-0 Ezãla sia mese Eʋegbe o.
fi-0 Tämä käyttäjä osaa hyvin vähän tai ei lainkaan suomea.
hi-0 इस सदस्य को हिन्दी का ज्ञान नहीं है (अथवा समझने में बहुत परेशानी होती है)।
hu-0 Ez a szerkesztő nem beszéli a magyar nyelvet (vagy csak nagyon nehezen érti meg).
mn-0 Энэ хэрэглэгч монгол хэлний мэдлэггүй байна (эсвэл их хүндрэлтэйгээр ойлгодог).
ne-0 यी प्रयोगकर्तासित नेपाली भाषाको ज्ञान छैन (अथवा कठिनता पूर्वक बुझ्दछन्).
is-0 Þessi notandi talar ekki íslensku (á erfitt með að skilja hana eða kýs að tala hana ekki).
sa-0 एषः सदस्यः संस्कृतेन लेखितुं न शक्नोति (अथवा तु बहुकष्टेन ज्ञातुं प्रभवति ।)।
simple-4 This user has near native speaker knowledge of Simple English.
Users by language
Authority control
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