那篇的L(Dice) = 2 * (E(x * y)) / E(x) + E(y) 就是兩倍交集除聯集的意思 計算機按按看結果一樣
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那篇的L(Dice) = 2 * (E(x * y)) / E(x) + E(y)
就是兩倍交集除聯集的意思
計算機按按看結果一樣