Knowledge graphs: Difference between revisions
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Today the DBpedia '''[[w:data set|data set]]s''' contain a wealth of information structured into '''[[w:Ontology (information science)|ontologies]]'''. This [[w:structured data|structured data]] can be queried with [[SPARQL]] query language at their [http://dbpedia.org/sparql public DBpedia SPARQL endpoint]. | Today the DBpedia '''[[w:data set|data set]]s''' contain a wealth of information structured into '''[[w:Ontology (information science)|ontologies]]'''. This [[w:structured data|structured data]] can be queried with [[SPARQL]] query language at their [http://dbpedia.org/sparql public DBpedia SPARQL endpoint]. | ||
There are many methods how the DBpedia ontology and datasets could be used in the Consumerium implementation stage wiki | There are many methods how the DBpedia ontology and datasets could be used in the Consumerium implementation stage wiki. | ||
== Ontology classes useful for implementing Consumerium == | == Ontology classes useful for implementing Consumerium == | ||
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* '''[http://wiki.dbpedia.org/Datasets DBpedia datasets]''' have been released annually, sometimes with improvements more frequently. The latest (as of July 2018) [https://wiki.dbpedia.org/develop/datasets/dbpedia-version-2016-10 DBpedia dataset version is 2016-10] which was published in 2017. | * '''[http://wiki.dbpedia.org/Datasets DBpedia datasets]''' have been released annually, sometimes with improvements more frequently. The latest (as of July 2018) [https://wiki.dbpedia.org/develop/datasets/dbpedia-version-2016-10 DBpedia dataset version is 2016-10] which was published in 2017. | ||
== Databus == | == DBpedia Databus == | ||
At DBpedia there is ongoing work on what is called '''[https://wiki.dbpedia.org/blog/dbpedia-databus-%E2%80%93-transforming-linked-data-networked-data-economy DBpedia Databus]''' to take their game to the next level. Databus Alpha was published in May 2018. | At DBpedia there is ongoing work on what is called '''[https://wiki.dbpedia.org/blog/dbpedia-databus-%E2%80%93-transforming-linked-data-networked-data-economy DBpedia Databus]''' to take their game to the next level. Databus Alpha was published in May 2018. | ||
== History of DBpedia == | == History of DBpedia == | ||
DBpedia began as an effort to extract structured information from [[Wikipedia]] [[templates|infobox templates]] and [[categories]] and to make this information available on the Web with the initial release on January 10th 2007. | DBpedia began as an effort to extract structured information from [[Wikipedia]] [[templates|infobox templates]] and [[categories]] and to make this information available on the Web with the initial release on January 10th 2007. | ||
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* [https://blog.dbpedia.org/ DBpedia blog] | * [https://blog.dbpedia.org/ DBpedia blog] | ||
* [https://github.com/dbpedia/ DBpedia code at GitHub] | * [https://github.com/dbpedia/ DBpedia code at GitHub] | ||
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= Wikidata = | = Wikidata = | ||
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'''[[w:Wikidata|Wikidata]]''' [http://wikidata.org (.org)] is a [[w:knowledge base|knowledge base]], an effort to store and serve structured data to [[Wikimedia]] wikis and to a more limited extent to other parties. Wikidata effort saw the daylight in [[2012]]. | '''[[w:Wikidata|Wikidata]]''' [http://wikidata.org (.org)] is a [[w:knowledge base|knowledge base]], an effort to store and serve structured data to [[Wikimedia]] wikis and to a more limited extent to other parties. Wikidata effort saw the daylight in [[2012]]. | ||
The underlying software is the '''[[#Wikibase|Wikibase]]''' which consists of 2 [[Mediawiki]] extensions, the | The underlying software is the '''[[#Wikibase|Wikibase]]''' which consists of 2 [[Mediawiki]] extensions, the [[mw:Extension:Wikibase Repository|Wikibase Repository]] and the [[mw:Extension:Wikibase Client|Wikibase Client]]. | ||
Wikibase allows [[interwiki]] links to be managed with Wikidata removing much contributor annoyanges, redundancy and error-proneness. | Wikibase allows [[interwiki]] links to be managed with Wikidata removing much contributor annoyanges, redundancy and error-proneness. | ||
Wikidata is obviously a | Wikidata is obviously a very viable source of [[reference]] level data once it is technically possible for non-WMF wikis to access the data items. (See [[#LinkedWiki extension]] for a potential workaround for this limitation) | ||
It can be accessed outside of WMF wikis with with | It can be accessed outside of WMF wikis with with | ||
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* [[w:Wikipedia:Wikidata|Wikipedia advice on Wikidata issues]] | * [[w:Wikipedia:Wikidata|Wikipedia advice on Wikidata issues]] | ||
= Wikibase = | |||
'''[[mw:Wikibase|Wikibase]]''' [http://wikiba.se/ (wikiba.se)] is a system for storing and querying structured data that powers [[Wikidata]] and other wikis. | '''[[mw:Wikibase|Wikibase]]''' [http://wikiba.se/ (wikiba.se)] is a system for storing and querying structured data that powers [[Wikidata]] and other wikis. | ||
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:# [[mw:Extension:Wikibase Client|Wikibase Client]] that allows a wiki to access structured data from a repository. The client can work only with repository databases it can access so they must be on the same machine or the same load balancer. | :# [[mw:Extension:Wikibase Client|Wikibase Client]] that allows a wiki to access structured data from a repository. The client can work only with repository databases it can access so they must be on the same machine or the same load balancer. | ||
== Installation of Wikibase == | |||
[[mw:Wikibase/Installation|Wikibase installation instructions at Mediawiki.org]] and [[mw:Wikibase/Installation/Advanced_configuration|advanced configuration of Wikibase]]. | [[mw:Wikibase/Installation|Wikibase installation instructions at Mediawiki.org]] and [[mw:Wikibase/Installation/Advanced_configuration|advanced configuration of Wikibase]]. | ||
The installation instructions assume you are installing the dependencies with [[mw:Composer|Composer]], a PHP package manager that makes the installation of dependencies easy. | The installation instructions assume you are installing the dependencies with [[mw:Composer|Composer]], a PHP package manager that makes the installation of dependencies easy. | ||
== Useful extensions in conjunction with Wikibase == | |||
* [[mw:Extension:ArticlePlaceholder]] makes article placeholders from repository data and invites users to create the article. | * [[mw:Extension:ArticlePlaceholder]] makes article placeholders from repository data and invites users to create the article. | ||
* [[mw:Extension:UniversalLanguageSelector]] is recommended to work in conjunction with Wikibase for user comfort. | * [[mw:Extension:UniversalLanguageSelector]] is recommended to work in conjunction with Wikibase for user comfort. | ||
== Alternative to using Wikibase Client == | |||
* [[ | * [[#LinkedWiki extension]] can be configured to access multiple SPARQL endpoints. | ||
== Useful information == | |||
* [[mw:Wikibase/DataModel|The data model used in Wikibase]] (thorough) and [[mw:Wikibase/DataModel/Primer|the primer on the data model]] (quick access) | * [[mw:Wikibase/DataModel|The data model used in Wikibase]] (thorough) and [[mw:Wikibase/DataModel/Primer|the primer on the data model]] (quick access) | ||
* [https://github.com/wikimedia/mediawiki-extensions-Wikibase/blob/master/docs/federation.wiki Information on the federation of Wikibase at Github] | * [https://github.com/wikimedia/mediawiki-extensions-Wikibase/blob/master/docs/federation.wiki Information on the federation of Wikibase at Github] | ||
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= Semantic MediaWiki = | = Semantic MediaWiki = | ||
[[File:SemanticMediaWiki_Logo.png|thumb|right|200px|Semantic MediaWiki logo]] | [[File:SemanticMediaWiki_Logo.png|thumb|right|200px|Semantic MediaWiki logo]] | ||
[[File:AcaWiki Semantic Forms screenshot.png|thumb|right|450px|A form to edit a page, using the [[mw:Extension:Semantic Forms|Semantic Forms extension]]]] | |||
'''Semantic MediaWiki''' [https://www.semantic-mediawiki.org/wiki/Semantic_MediaWiki (.org)] (SMW) is a free, open-source [[MediaWiki extensions|extension]] to [[MediaWiki]] that lets you store & query semantic data within the wiki and it seems well suited to [[Consumerium]]'s information infrastructure needs. | '''Semantic MediaWiki''' [https://www.semantic-mediawiki.org/wiki/Semantic_MediaWiki (.org)] (SMW) is a free, open-source [[MediaWiki extensions|extension]] to [[MediaWiki]] that lets you store & query semantic data within the wiki and it seems well suited to [[Consumerium]]'s information infrastructure needs. | ||
== Spinoff extensions == | == Spinoff extensions == | ||
A variety of open-source MediaWiki extensions exist that use the data structure provided by Semantic MediaWiki. | A variety of open-source MediaWiki extensions exist that use the data structure provided by Semantic MediaWiki. | ||
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* [[mw:Extension:Semantic Maps|Semantic Maps]] - displays geographic semantic data using various mapping services | * [[mw:Extension:Semantic Maps|Semantic Maps]] - displays geographic semantic data using various mapping services | ||
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= | = LinkedWiki extension = | ||
A possible way to tap into knowledge graphs is the [[mw:Extension:LinkedWiki|LinkedWiki extension]]. LinkedWiki has been developed since 2010. | |||
= See also = | = See also = | ||
* [[Database]] for a higher level view of what is going on with the databases | * [[Database]] for a higher level view of what is going on with the databases | ||