Merge pull request #1 from liuktc/patch-1

Update _rnn.tex

src/year2/natural-language-processing/sections/_rnn.tex

@@ -39,7 +39,7 @@
     \begin{description}
         \item[Training]
             Given the predicted distribution $\hat{\vec{y}}^{(t)}$ and ground-truth $\vec{y}^{(t)}$ at step $t$, the loss is computed as the cross-entropy:
-            \[ \mathcal{L}^{(t)}(\matr{\theta}) = - \sum_{v \in V} \vec{y}_v^{(t)} \log\left( \hat{\vec{y}}_w^{(t)} \right) \]
+            \[ \mathcal{L}^{(t)}(\matr{\theta}) = - \sum_{v \in V} \vec{y}_v^{(t)} \log\left( \hat{\vec{y}}_v^{(t)} \right) \]
 
             \begin{description}
                 \item[Teacher forcing] \marginnote{Teacher forcing}
@@ -68,4 +68,4 @@
             \item[Greedy] Select the token with the highest probability.
             \item[Sampling] Randomly sample the token following the probabilities of the output distribution.
         \end{descriptionlist}
-\end{description}
+\end{description}