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垃圾邮件过滤器:20%的邮件是垃圾。在垃圾邮件中,每个可疑关键词出现的概率为60%;在合法邮件中为5%。一封邮件有3个关键词。是垃圾的概率是多少?
垃圾邮件过滤器:20%的邮件是垃圾。在垃圾邮件中,每个可疑关键词出现的概率为60%;在合法邮件中为5%。一封邮件有3个关键词。是垃圾的概率是多少?
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