英语翻译The notion of relevance is central to many theoretical a

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/15 00:04:44

英语翻译
The notion of relevance is central to many theoretical and practical
information retrieval models.Traditional retrieval models assume
that the relevance of a document is independent of the relevance
of other documents.This makes it possible to formulate
the retrieval problem as computing a relevance value for each document separately,and then ranking documents by relevance [6].
In reality,however,this independent relevance assumption rarely
holds; the utility of retrieving one document,in general,may depend on which documents the user has already seen.As an extreme
example,a relevant document may be useless to a user if the user
has already seen another document with the same content.

相关性的概念是许多理论和实际信息检索模型的核心.传统检索模型假设一个文件的相关性独立于其他文件.使得我们能够对每个文件的相关值独立运算以规范化检索问题,然后按文件相关程度排序[6].然而事实上,“相关性是相互独立的”这种假设很少站得住脚；一般来讲,用户是否使用检索到的文件可能取决于用户已看到的文件.一个极端的例子,如果用户已看到有相同内容的其他文件,一个尽管具有相关性的文件对用户就可能是无用的.

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