BUAA Bayes 知识点整理


P(原因i观测的现象)=P(原因iP(观测的现象|原因i))P(观测的现象)P(\text{原因i} | 观测的现象) = \frac{P(\text{原因i} \cdot P(\text{观测的现象|原因i}))}{P(\text{观测的现象})}

也就是后验概率等于先验概率乘上原因对观测的解释力度

后验概率 = 先验概率 \cdot 标准化后的似然概率

贝叶斯公式也被称为逆概率公式(和全概率公式相对)


Author: Yixiang Zhang
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