minor updates

Book/Chapter4/chapter4.tex

@@ -1200,7 +1200,7 @@ h_i (d,\textbf{t},\textbf{s})=\sum_{r \in d}h_i (r)
 
 \parinterval 最终，模型得分被定义为：
 \begin{eqnarray}
-\textrm{score}(d,\textbf{t},\textbf{s})=\textrm{rscore}(d,\textbf{t},\textbf{s})+ \lambda_8 \textrm{log}⁡(\textrm{P}_{\textrm{lm}}(\textrm{t}))+\lambda_9 \mid \textrm{t} \mid
+\textrm{score}(d,\textbf{t},\textbf{s})=\textrm{rscore}(d,\textbf{t},\textbf{s})+ \lambda_8 \textrm{log}⁡(\textrm{P}_{\textrm{lm}}(\textbf{t}))+\lambda_9 \mid \textbf{t} \mid
 \label{eq:4-27}
 \end{eqnarray}
 

Book/Chapter6/Chapter6.tex

@@ -1513,10 +1513,10 @@ L(\mathbf{Y},\widehat{\mathbf{Y}}) = \sum_{j=1}^n L_{\textrm{ce}}(\mathbf{y}_j,\
 
 \parinterval 可以得到``$pos+k$''的位置编码为：
 \begin{eqnarray}
-\textrm{PE}(pos+k,2i) &=& \textrm{PE}(pos,2i) \times \textrm{PE}(k,2i+1)
-+ \textrm{PE}(pos,2i+1) \times \textrm{PE}(k,2i) \nonumber \\
-\textrm{PE}(pos+k ,2i+1) &=& \textrm{PE}(pos,2i+1) \times \textrm{PE}(k,2i+1)
-- \textrm{PE}(pos,2i) \times \textrm{PE}(k,2i) \nonumber \\
+\textrm{PE}(pos+k,2i) &=& \textrm{PE}(pos,2i) \times \textrm{PE}(k,2i+1) + \nonumber \\
+                      & & \textrm{PE}(pos,2i+1) \times \textrm{PE}(k,2i)\\
+\textrm{PE}(pos+k ,2i+1) &=& \textrm{PE}(pos,2i+1) \times \textrm{PE}(k,2i+1) - \nonumber \\
+                         & & \textrm{PE}(pos,2i) \times \textrm{PE}(k,2i)
 \label{eq:6-46}
 \end{eqnarray}
 

Book/Chapter7/Figures/figure-increase-the-encoder.tex

@@ -15,7 +15,7 @@
 		\node[node] (enc10) at ([xshift = \base]enc9.east) {};
 		\node[font=\scriptsize,rotate=270] (src) at ([xshift = -\base]enc1.west) {src};
 		\draw [->] ([xshift=-0.75em]enc1.west) -- (enc1.west);
-		\draw [decorate,decoration={brace}] ([yshift=0.3em]enc1.north west) to node [auto,anchor=south,font=\scriptsize] {Nx} ([yshift=0.3em]enc10.north east);
+		\draw [decorate,decoration={brace}] ([yshift=0.3em]enc1.north west) to node [auto,anchor=south,font=\scriptsize] {$N$x} ([yshift=0.3em]enc10.north east);
 		\draw [->] (enc1.east) -- (enc2.west);
 		\draw [->] (enc2.east) -- (enc3.west);
 		\draw [->] (enc3.east) -- (enc4.west);