update chapter 4

Book/Chapter4/Figures/content-of-chart-in-tree-based-decoding.tex

@@ -82,7 +82,7 @@
 \node[anchor=west](b8) at ([xshift=0em,yshift=-1.5em]b7.west){{VP}};
 \node[anchor=west](b9) at ([xshift=0em,yshift=-1.5em]b8.west){{N/A}};
 \node[anchor=west](b10) at ([xshift=0em,yshift=-1.5em]b9.west){{VP}};
-\node[anchor=west](b11) at ([xshift=0em,yshift=-1.5em]b10.west){{IP({\red root})}};
+\node[anchor=west](b11) at ([xshift=0em,yshift=-1.5em]b10.west){{IP ({\red root})}};
 
 \node[anchor=west](y2) at ([xshift=0.2em,yshift=-1.7em]y1.west){{猫}};
 \node[anchor=west](y3) at ([xshift=0em,yshift=-1.5em]y2.west){{喜欢}};

Book/Chapter4/Figures/one-best-node-alignment-and-alignment-matrix.tex

@@ -105,7 +105,7 @@
 \end{flushright}
 \begin{center}
 \vspace{-1em}
-(a) Sub-tree alignment matrixes for a sample sub-tree pair
+(a)节点对齐矩阵（1-best vs. Matrix）
 \end{center}
 
 \begin{center}
@@ -147,7 +147,7 @@
 
 \begin{center}
 \vspace{-2em}
-(b) Rules extracted using 1-best alignment and alignment posterior.
+(b) 抽取得到的树到树翻译规则
 \end{center}
 
 \end{center}