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Excerpt: The success of a search engine algorithm lies in its ability to retrieving information for a given query. There are two ways in which one might consider the return of results to be successful. Either you can obtain very accurate results or you can find many results which have some connection with the search query. In information retrieval, these are termed precision and recall, respectively. The precision is defined as the fraction of retrieved documents that are relevant. Recall is defined as the fraction of relevant documents that are retrieved.This might seem like the distinction between the Judian People’s Front and…