Wikidata
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Platform
| GlossaryEntry | |
|---|---|
| responsible | https://www.wikidata.org/ |
| state | |
| since | 2012/10/29 |
| description | Wikidata is a collaboratively edited multilingual knowledge graph hosted by the Wikimedia Foundation.[2] It is a common source of open data that Wikimedia projects such as Wikipedia,[3][4] and anyone else, can use under the CC0 public domain license. Wikidata is a wiki powered by the software MediaWiki, and is also powered by the set of knowledge graph MediaWiki extensions known as Wikibase. |
| references | |
| lang | en |
| master | Wikidata |
Freitext
Graph
Example
CiteSchema
Template:SchemaProperty Template:SchemaProperty
Wikidata is an open knowledge base run by the Wikimedia Foundation. It contains information about all kinds of entities (people, places, subjects...) including scientific events. See https://www.wikidata.org/wiki/Wikidata:WikiProject_Events for information about events in Wikidata organized by the Wikidata community. Wikidata can be edited openly, including API access.
Wikidata can also be used as linking hub as it collects event identifiers from other platforms as well (for instance WikiCFP conference series ID). See Wikidata property to identify events (list via SPARQL) but this list is not complete.
Queries
Conference Series
# WF 2020-06-07
SELECT ?item ?itemLabel
WHERE
{
# scientific conference series (Q47258130)
?item wdt:P31 wd:Q47258130.
SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
93 as of 2020-06-07, 4250 as of 2022-08
Conference Series with dblp PIDs
# Conference Series
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
SELECT ?confSeries ?short_name ?confSeriesLabel ?DBLP_pid ?WikiCFP_pid ?GND_pid
WHERE
{
# scientific conference series (Q47258130)
?confSeries wdt:P31 wd:Q47258130.
OPTIONAL { ?confSeries wdt:P1813 ?short_name . }
# any item with a DBLP venue ID
?confSeries wdt:P8926 ?DBLP_pid.
# WikiCFP pid
optional {
?confSeries wdt:P5127 ?WikiCFP_pid.
}
# GND pid
optional {
?confSeries wdt:P227 ?GND_pid.
}
# label
?confSeries rdfs:label ?confSeriesLabel filter (lang(?confSeriesLabel) = "en").
# filter exotic pair entry
FILTER(?confSeries != wd:Q7395156)
}
ORDER BY (?short_name)
try it! 221 as of 2021-01, 4327 as of 2022-08
Examples
WikiData IMC 2017 != OpenResearch IMC 2017
Links
- https://www.wikidata.org/wiki/Wikidata:WikiProject_Events#
- https://www.wikidata.org/wiki/Q2020153
- scientific conference series (Q47258130)
Notability
- https://www.wikidata.org/wiki/Wikidata:Notability
- It refers to an instance of a clearly identifiable conceptual or material entity. The entity must be notable, in the sense that it can be described using serious and publicly available references.
- It fulfills a structural need, for example: it is needed to make statements made in other items more useful.
Wikipedia Notability
Example
see https://en.wikipedia.org/wiki/Federated_Logic_Conference
Projects
Wikidata and Persistent Identifiers
see Wikidata/PIDs
Tools
Mass Edits
QuickStatements
see https://quickstatements.toolforge.org/#/
Cite
ISBN->Wikidata
WikiDump
Example:
Scholia
Mismatch Finder
Papers
Falcon2
Raise Wikibase
Python
Node.js
WikiData Query Service
Examples
Conference Series with wikiCPFId
Conference Series with wikiCFPId
scholarly articles with DOI and PubMed Id
# find scholarly articles with "Proceedings" in the name
SELECT DISTINCT ?item ?itemLabel ?doi ?_PubMed_ID
WHERE
{
# https://www.wikidata.org/wiki/Q13442814 scholarly article
?item wdt:P31 wd:Q13442814 ;
rdfs:label ?itemLabel .
# https://www.wikidata.org/wiki/Property:P356
OPTIONAL { ?item wdt:P356 ?doi. }
# https://www.wikidata.org/wiki/Property:P698 PubMed ID
OPTIONAL { ?item wdt:P698 ?_PubMed_ID. }
FILTER(CONTAINS(LCASE(?itemLabel), "Proceedings"))
FILTER (LANG(?itemLabel)="en")
}
Conference Series: with optional properties and more than 1 value per property
In order to avoid duplication of returned subjects a concatenation of the values is done with:
(GROUP_CONCAT(DISTINCT ?main_subjectLabel; separator='@@@') as ?main_subjects)
SELECT DISTINCT ?item ?dateModified ?itemLabel
(GROUP_CONCAT(DISTINCT ?main_subjectLabel; separator='@@@') as ?main_subjects)
(GROUP_CONCAT(DISTINCT ?language_usedLabel; separator='@@@') as ?languages)
(GROUP_CONCAT(DISTINCT ?short_nameLabel; separator='@@@') as ?short_names)
(GROUP_CONCAT(DISTINCT ?official_website; separator='@@@') as ?official_websites)
(GROUP_CONCAT(DISTINCT ?Twitter_username; separator='@@@') as ?Twitter_usernames)
(GROUP_CONCAT(DISTINCT ?WikiCFP_conference_series_ID; separator='@@@') as ?WikiCFP_conference_series_IDs)
(GROUP_CONCAT(DISTINCT ?GND_ID; separator='@@@') as ?GND_IDs)
(GROUP_CONCAT(DISTINCT ?Freebase_ID; separator='@@@') as ?Freebase_IDs)
(GROUP_CONCAT(DISTINCT ?event_interval_inmonths; separator='@@@') as ?event_intervalS_inmonths)
(GROUP_CONCAT(DISTINCT ?start_time; separator='@@@') as ?start_times)
WHERE {
?item wdt:P31 wd:Q47258130 ;
schema:dateModified ?dateModified .
OPTIONAL { ?item wdt:P921 ?main_subject . }
OPTIONAL { ?item wdt:P2936 ?language_used . }
OPTIONAL { ?item wdt:P1813 ?short_name . }
OPTIONAL { ?item wdt:P580 ?start_time . }
OPTIONAL { ?item wdt:P856 ?official_website . }
OPTIONAL { ?item wdt:P2002 ?Twitter_username . }
OPTIONAL { ?item wdt:P227 ?GND_ID . }
OPTIONAL { ?item wdt:P5127 ?WikiCFP_conference_series_IDvalue . }
OPTIONAL { ?item wdt:P5127 ?WikiCFP_conference_series_IDvalue .
BIND ( CONCAT("http://wikicfp.com/cfp/program?id=", STR(?WikiCFP_conference_series_IDvalue)) AS ?WikiCFP_conference_series_ID )
}
OPTIONAL { ?item wdt:P646 ?Freebase_IDvalue .
BIND ( CONCAT("https://freebase.toolforge.org", STR(?Freebase_IDvalue)) AS ?Freebase_ID )
}
OPTIONAL {
?item p:P2257 [
a wikibase:BestRank; # best ranked unit returned
psv:P2257 [
wikibase:quantityAmount ?event_interval;
wikibase:quantityUnit ?event_interval_unit
]
].
# if unitLabel is wd:Q577 (year) or wd:Q1092296 (annum): *
BIND( IF (?event_interval_unit in (wd:Q577, wd:Q1092296 ), ?event_interval * 12, ?event_interval) AS ?event_interval_inmonths ) .
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?main_subject rdfs:label ?main_subjectLabel .
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?language_used rdfs:label ?language_usedLabel .
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?short_name rdfs:label ?short_nameLabel .
}
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
GROUP BY ?item ?itemLabel ?dateModified
ORDER BY DESC(?dateModified)
Events: congress, workshop, conference, seminar, hackthon
required values for properties:
- ?dateModified
- ?start_time
- ?end_time
Note that if the following statement is placed outside the UNION the query takes far too long, hence keeping it within each UNION block
?item schema:dateModified ?dateModified;
wdt:P580 ?start_time;
wdt:P582 ?end_time .
518 results in less than 2 secs. Link to query
SELECT DISTINCT ?item ?dateModified ?itemLabel ?event_type ?countryLabel
(GROUP_CONCAT(DISTINCT ?main_subjectLabel; separator='@@@') as ?main_subjects)
(GROUP_CONCAT(DISTINCT ?language_usedLabel; separator='@@@') as ?languages)
(GROUP_CONCAT(DISTINCT ?short_nameLabel; separator='@@@') as ?short_names)
(GROUP_CONCAT(DISTINCT ?official_website; separator='@@@') as ?official_websites)
(GROUP_CONCAT(DISTINCT ?Twitter_username; separator='@@@') as ?Twitter_usernames)
(GROUP_CONCAT(DISTINCT ?WikiCFP_conference_series_ID; separator='@@@') as ?WikiCFP_conference_series_IDs)
(GROUP_CONCAT(DISTINCT ?GND_ID; separator='@@@') as ?GND_IDs)
(GROUP_CONCAT(DISTINCT ?Freebase_ID; separator='@@@') as ?Freebase_IDs)
(GROUP_CONCAT(DISTINCT ?start_time; separator='@@@') as ?start_times)
(GROUP_CONCAT(DISTINCT ?end_time; separator='@@@') as ?end_times)
WHERE {
{
?item wdt:P31 wd:Q2495862 .
?item schema:dateModified ?dateModified;
wdt:P580 ?start_time;
wdt:P582 ?end_time .
BIND ('congress' as ?event_type)
}
UNION
{
?item wdt:P31 wd:Q40444998 .
?item schema:dateModified ?dateModified;
wdt:P580 ?start_time;
wdt:P582 ?end_time .
BIND ('workshop' as ?event_type)
}
UNION
{
?item wdt:P31 wd:Q2020153 .
?item schema:dateModified ?dateModified;
wdt:P580 ?start_time;
wdt:P582 ?end_time .
BIND ('conference' as ?event_type)
}
UNION
{
?item wdt:P31 wd:Q504703 .
?item schema:dateModified ?dateModified;
wdt:P580 ?start_time;
wdt:P582 ?end_time .
BIND ('seminar' as ?event_type)
}
UNION
{
?item wdt:P31 wd:Q46855.
?item schema:dateModified ?dateModified;
wdt:P580 ?start_time;
wdt:P582 ?end_time .
BIND ('hackthon' as ?event_type )
}
OPTIONAL { ?item wdt:P921 ?main_subject . }
OPTIONAL { ?item wdt:P2936 ?language_used . }
OPTIONAL { ?item wdt:P1813 ?short_name . }
OPTIONAL {?item wdt:P17 ?country }
OPTIONAL { ?item wdt:P856 ?official_website . }
OPTIONAL { ?item wdt:P2002 ?Twitter_username . }
OPTIONAL { ?item wdt:P227 ?GND_ID . }
OPTIONAL { ?item wdt:P5127 ?WikiCFP_conference_series_IDvalue .
BIND ( CONCAT("http://wikicfp.com/cfp/program?id=", STR(?WikiCFP_conference_series_IDvalue)) AS ?WikiCFP_conference_series_ID )
}
OPTIONAL { ?item wdt:P646 ?Freebase_IDvalue .
BIND ( CONCAT("https://freebase.toolforge.org", STR(?Freebase_IDvalue)) AS ?Freebase_ID )
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?main_subject rdfs:label ?main_subjectLabel .
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?language_used rdfs:label ?language_usedLabel .
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?short_name rdfs:label ?short_nameLabel .
}
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
GROUP BY ?item ?itemLabel ?dateModified ?event_type ?countryLabel
ORDER BY DESC(?dateModified)
Quality
- Item Quality Evaluator calculates ORES score
Conference Series
SELECT ?item
WHERE
{
# scientific conference series (Q47258130)
?item wdt:P31 wd:Q47258130.
}
E.g. ORES score avg: 2.57 on a scale from 1 to 5 for 4220 Scientific event series: Best 33
Conferences
SELECT ?item
WHERE
{
# scientific conference (Q2020153)
?item wdt:P31 wd:Q2020153.
}
Avg. ORES Score 2.68 for 7184 Items (2021-05-14). 8430 Items (2022-09-14)
Visualization
- https://tools.wmflabs.org/hay/vizquery
- https://wikidatawalkabout.org/
- https://dataprick.github.io/wikitree/public/?q=Q9439&level=9&type=descendants&type_label=descendants&orientation=West&lang=en
- https://wikitable.info/compare/universities
Examples
References
- ^ Erxleben, Fredo and Günther, Michael and Krötzsch, Markus and Mendez, Julian and Vrandečić, Denny. (2014) "Introducing Wikidata to the Linked Data Web" - 50–65 pages. url: https://link.springer.com/content/pdf/10.1007/978-3-319-11964-9_4.pdfat: ISWC 2014
- ^ Denny Vrandečić,Markus Krötzsch. (2014) "Wikidata: a free collaborative knowledgebase" Communications of the ACM . doi: /10.1145/2629489url: https://doi.org/10.1145/2629489
- ^ Lars C. Gleim,Rafael Schimassek,Dominik Hüser,Maximilian Peters,Christoph Krämer,Michael Cochez,Stefan Decker. (2020) "SchemaTree: Maximum-Likelihood Property Recommendation for Wikidata" Harth A. et al. (eds) The Semantic Web. ESWC 2020. Lecture Notes in Computer Science, vol 12123. Springer, Cham . doi: 10.1007/978-3-030-49461-2_11url: https://link.springer.com/chapter/10.1007/978-3-030-49461-2_11at: ESCWC 2020
- a b "Finn Årup Nielsen and Daniel Mietchen and Egon L. Willighagen". (2017) "Scholia and scientometrics with Wikidata" . url: http://arxiv.org/abs/1703.04222
- ^ Ahmad Sakor, Kuldeep Singh, Anery Patel, Maria-Esther Vidal. (2020) "Falcon 2.0: An Entity and Relation Linking Tool over Wikidata" CIKM ’20, October 19–23, 2020, Virtual Event, Ireland . doi: 10.1145/3340531.3412777 10.18653/v1/N19-1243, 10.1145/3340531.3412777url: https://www.researchgate.net/profile/Ahmad_Sakor/publication/338158541_Falcon_20_An_Entity_and_Relation_Linking_Tool_over_Wikidataat: CIKM 2020