Binary classification - Wikipedia, the free encyclopedia



Binary or binomial classification is the task of classifying the elements of a given set into two groups on the basis of a classification rule. Some typical binary classification tasks are:

  • medical testing to determine if a patient has certain disease or not – the classification property is the presence of the disease;
  • quality control in factories; i.e. deciding if a new product is good enough to be sold, or if it should be discarded – the classification property is being good enough;
  • information retrieval, namely deciding whether a page or an article should be in the result set of a search or not – the classification property is the relevance of the article, or the usefulness to the user.

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