wikidata-api

问题 I want to query wikidata by free text or by category, to return entities who has a corresponding wikipedia page. For each page (or for a selected page) I want to fetch all the linked wikidata entities who have a corresponding wikipedia article. Note that: for each wikipedia page and linked pages, I want to fetch the corresponding Wikidata Id a linked wikidata entity may exist on other wikipedias, not necessarily in the queried language (e.g. a page in French History is available in multiple

问题 I want to query wikidata by free text or by category, to return entities who has a corresponding wikipedia page. For each page (or for a selected page) I want to fetch all the linked wikidata entities who have a corresponding wikipedia article. Note that: for each wikipedia page and linked pages, I want to fetch the corresponding Wikidata Id a linked wikidata entity may exist on other wikipedias, not necessarily in the queried language (e.g. a page in French History is available in multiple

问题 I'm really new to wikidata. I just figured that wikidata uses a lot of reification. Suppose we want to get all information available for Obama. If we are going to do it from DBpedia, we would just use a simple query: select * where {<http://dbpedia.org/resource/Barack_Obama> ?p ?o .} This would return all the properties and values with Obama being the subject. Essentially the result is the same as this page: http://dbpedia.org/page/Barack_Obama while the query result is in a format I needed.

问题 I'm really new to wikidata. I just figured that wikidata uses a lot of reification. Suppose we want to get all information available for Obama. If we are going to do it from DBpedia, we would just use a simple query: select * where {<http://dbpedia.org/resource/Barack_Obama> ?p ?o .} This would return all the properties and values with Obama being the subject. Essentially the result is the same as this page: http://dbpedia.org/page/Barack_Obama while the query result is in a format I needed.

问题 I'm really new to wikidata. I just figured that wikidata uses a lot of reification. Suppose we want to get all information available for Obama. If we are going to do it from DBpedia, we would just use a simple query: select * where {<http://dbpedia.org/resource/Barack_Obama> ?p ?o .} This would return all the properties and values with Obama being the subject. Essentially the result is the same as this page: http://dbpedia.org/page/Barack_Obama while the query result is in a format I needed.

问题 How do I (reliably) get the main image(s) used in the Wikipedia Infobox from the API? This question has been asked before and the accepted answer admits that it is just a guess. Subsequent answers seem like a hack, at best and don't return the correct image. For instance, the Jimi Hendrix Wikipedia entry uses "File:Jimi Hendrix 1967.png" as the main image in the InfoBox. The updated answers suggest using this url but for Jimi Hendrix (and other topics) it often returns the wrong image. If I

问题 How do I (reliably) get the main image(s) used in the Wikipedia Infobox from the API? This question has been asked before and the accepted answer admits that it is just a guess. Subsequent answers seem like a hack, at best and don't return the correct image. For instance, the Jimi Hendrix Wikipedia entry uses "File:Jimi Hendrix 1967.png" as the main image in the InfoBox. The updated answers suggest using this url but for Jimi Hendrix (and other topics) it often returns the wrong image. If I

问题 I would like to know how to query Wikidata by using the alias ("also known as"). Right now I am trying SELECT ?item WHERE { ?item rdfs:aliases ?alias. FILTER(CONTAINS(?alias, "Angela Kasner"@en)) } LIMIT 5 This is simply a query that works if I replace rdfs:aliases by rdfs:labels . I am trying this, because Help:Aliases says that aliases are searchable in the same way as labels, but I can't find any other resource on that nor can I find an example. 回答1: This query might be helpful for someone

问题 Yesterday, I asked a question about how to get wikidata oldest and latest timestamp for "Kevin Kratz (Q939047)", someone suggested using API sandbox to create the query like this: oldest timestamp: https://www.wikidata.org/w/api.php?action=query&format=json&list=allrevisions&titles=Kevin%20Kratz&arvprop=ids|timestamp|flags|comment|user&arvlimit=1&arvdir=newer latest timestamp: https://www.wikidata.org/w/api.php?action=query&format=json&list=allrevisions&titles=Kevin%20Kratz&arvprop=ids

问题 Yesterday, I asked a question about how to get wikidata oldest and latest timestamp for "Kevin Kratz (Q939047)", someone suggested using API sandbox to create the query like this: oldest timestamp: https://www.wikidata.org/w/api.php?action=query&format=json&list=allrevisions&titles=Kevin%20Kratz&arvprop=ids|timestamp|flags|comment|user&arvlimit=1&arvdir=newer latest timestamp: https://www.wikidata.org/w/api.php?action=query&format=json&list=allrevisions&titles=Kevin%20Kratz&arvprop=ids