相关性(Relevance)又叫关联,是指一个主题与另一个主题存在某种形式的联系,这使得人们在考虑第一个主题时会同时考虑到第二个相关的主题。相关性的概念在许多不同的领域都有研究,例如认识论、逻辑学以及图书馆信息学[1]

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