使用SPARQL从DBpedia获取美国物理学家的名单 [英] Getting a list of American physicists from DBpedia using SPARQL

问题描述

我想查询美国物理学家并获取物理学家列表。我该怎么做？

I want to query the American Physicsts and get the list of physicists. How can I do this?

推荐答案

您需要的SPARQL看起来像这样....

The SPARQL you need would look like this ....

PREFIX category: <http://dbpedia.org/resource/Category:>
PREFIX dcterms: <http://purl.org/dc/terms/>

SELECT *
WHERE {
  ?s dcterms:subject category:American_physicists .
}

查看结果此处

如果您想要带有更多谓词的列表，则需要使用变量？s 联接更多三元模式。例如，要检索每个物理学家的生日...

If you want the list with some extra predicates you need to join more triple patterns using the variable ?s. For instance, to retrieve the birthdate for each physicist ...

PREFIX category: <http://dbpedia.org/resource/Category:>
PREFIX dcterms: <http://purl.org/dc/terms/>
PREFIX dbpedia: <http://dbpedia.org/ontology/>

SELECT *
WHERE {
  ?s dcterms:subject category:American_physicists .
  ?s dbpedia:birthDate ?bithdate .
}

结果此处

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