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qiwang067
2022-09-13 22:43:09 +08:00
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@@ -147,7 +147,6 @@ $$
\mathbb{E}\left[G_{t+1} \mid s_{t+1}\right] &=\mathbb{E}\left[g^{\prime} \mid s^{\prime}\right] \\ \mathbb{E}\left[G_{t+1} \mid s_{t+1}\right] &=\mathbb{E}\left[g^{\prime} \mid s^{\prime}\right] \\
&=\sum_{g^{\prime}} g^{\prime}~p\left(g^{\prime} \mid s^{\prime}\right) &=\sum_{g^{\prime}} g^{\prime}~p\left(g^{\prime} \mid s^{\prime}\right)
\end{aligned} \tag{2.2} \end{aligned} \tag{2.2}
$$ $$
>如果 $X$ 和 $Y$ 都是离散型随机变量，则条件期望（conditional expectation）$\mathbb{E}[X|Y=y]$ 定义为 >如果 $X$ 和 $Y$ 都是离散型随机变量，则条件期望（conditional expectation）$\mathbb{E}[X|Y=y]$ 定义为