


   \begin{tikzpicture}
    \begin{scope}
    \tikzstyle{rnnnode} = [minimum height=1.1em,minimum width=2.7em,inner sep=2pt,rounded corners=1pt,draw,fill=red!20];

    \node [rnnnode,anchor=west] (h1) at (0,0) {\tiny{$\mathbi{h}_1$}};
    \node [rnnnode,anchor=west] (h2) at ([xshift=1.5em]h1.east) {\tiny{$\mathbi{h}_2$}};
    \node [rnnnode,anchor=west] (h3) at ([xshift=1.5em]h2.east) {\tiny{$\mathbi{h}_3$}};
    \node [rnnnode,anchor=north,fill=green!20] (e1) at ([yshift=-1em]h1.south) {\tiny{$e_x()$}};
    \node [rnnnode,anchor=west,fill=green!20] (e2) at ([xshift=1.5em]e1.east) {\tiny{$e_x()$}};
    \node [rnnnode,anchor=west,fill=green!20] (e3) at ([xshift=1.5em]e2.east) {\tiny{$e_x()$}};
    \node [anchor=north,inner sep=2pt] (w1) at ([yshift=-0.6em]e1.south) {\tiny{你}};
    \node [anchor=north,inner sep=2pt] (w2) at ([yshift=-0.6em]e2.south) {\tiny{好}};
    \node [anchor=north,inner sep=2pt] (w3) at ([yshift=-0.6em]e3.south) {\tiny{$\langle$eos$\rangle$}};
    %\node [anchor=south] (dot1) at ([xshift=0.4em,yshift=-0.7em]h1.south) {\tiny{...}};
    %\node [anchor=south] (dot2) at ([xshift=-0.4em,yshift=-0.7em]h3.south) {\tiny{...}};

    \draw [->] (w1.north) -- ([yshift=-0.1em]e1.south);
    \draw [->] (w2.north) -- ([yshift=-0.1em]e2.south);
    \draw [->] (w3.north) -- ([yshift=-0.1em]e3.south);
    \draw [->] ([yshift=0.1em]e1.north) -- ([yshift=-0.1em]h1.south);
    \draw [->] ([yshift=0.1em]e2.north) -- ([yshift=-0.1em]h2.south);
    \draw [->] ([yshift=0.1em]e3.north) -- ([yshift=-0.1em]h3.south);
    \draw [->] ([xshift=0.2em,yshift=0.1em]e1.north) .. controls +(north:0.3) and +(south:0.4) .. ([xshift=-0.3em,yshift=-0.1em]h2.south);
    \draw [->] ([xshift=-0.2em,yshift=0.1em]e3.north) .. controls +(north:0.3) and +(south:0.4) .. ([xshift=0.3em,yshift=-0.1em]h2.south);
    \draw [->] ([xshift=0.4em,yshift=-0.4em]h1.south) -- ([xshift=0.3em,yshift=-0.1em]h1.south);
    \draw [->] ([xshift=0.8em,yshift=-0.4em]h1.south) -- ([xshift=0.6em,yshift=-0.1em]h1.south);
    \draw [->] ([xshift=-0.4em,yshift=-0.4em]h3.south) -- ([xshift=-0.3em,yshift=-0.1em]h3.south);
    \draw [->] ([xshift=-0.8em,yshift=-0.4em]h3.south) -- ([xshift=-0.6em,yshift=-0.1em]h3.south);

    \node [anchor=south] (encoder) at ([xshift=-0.2em]h1.north west) {\scriptsize{\textbf{编码器}}};

{
    \node [rnnnode,anchor=west,fill=green!20] (t1) at ([xshift=3.5em]e3.east) {\tiny{$e_y()$}};
    }
{
    \node [rnnnode,anchor=west,fill=green!20] (t2) at ([xshift=1.8em]t1.east) {\tiny{$e_y()$}};
    }
{
    \node [rnnnode,anchor=west,fill=green!20] (t3) at ([xshift=1.8em]t2.east) {\tiny{$e_y()$}};
    \node [rnnnode,anchor=west,fill=green!20] (t4) at ([xshift=1.8em]t3.east) {\tiny{$e_y()$}};
    %\node [anchor=west,inner sep=2pt] (t5) at ([xshift=0.3em]t4.east) {\tiny{...}};
    }
{
    \node [rnnnode,anchor=south] (s1) at ([yshift=1em]t1.north) {\tiny{$\mathbi{s}_1$}};
    \node [rnnnode,anchor=south] (f1) at ([yshift=1em]s1.north) {\tiny{$\mathbi{f}_1$}};
    }
{
    \node [rnnnode,anchor=south] (s2) at ([yshift=1em]t2.north) {\tiny{$\mathbi{s}_2$}};
    \node [rnnnode,anchor=south] (f2) at ([yshift=1em]s2.north) {\tiny{$\mathbi{f}_2$}};
    }
{
    \node [rnnnode,anchor=south] (s3) at ([yshift=1em]t3.north) {\tiny{$\mathbi{s}_3$}};
    \node [rnnnode,anchor=south] (f3) at ([yshift=1em]s3.north) {\tiny{$\mathbi{f}_3$}};
    \node [rnnnode,anchor=south] (s4) at ([yshift=1em]t4.north) {\tiny{$\mathbi{s}_4$}};
    \node [rnnnode,anchor=south] (f4) at ([yshift=1em]s4.north) {\tiny{$\mathbi{f}_4$}};
    %\node [anchor=west,inner sep=2pt] (s5) at ([xshift=0.3em]s4.east) {\tiny{...}};
    %\node [anchor=south] (dot3) at ([xshift=-0.4em,yshift=-0.7em]s3.south) {\tiny{...}};
    \node [anchor=south] (dot4) at ([xshift=-0.4em,yshift=-0.7em]s4.south) {\tiny{...}};
    }
{
    \node [rnnnode,anchor=south,fill=blue!20] (o1) at ([yshift=1em]f1.north) {\tiny{softmax}};
    \node [anchor=east] (decoder) at ([xshift=-0.3em,yshift=0.5em]o1.north west) {\scriptsize{\textbf{解码器}}};
    }
{
    \node [rnnnode,anchor=south,fill=blue!20] (o2) at ([yshift=1em]f2.north) {\tiny{softmax}};
    }
{
    \node [rnnnode,anchor=south,fill=blue!20] (o3) at ([yshift=1em]f3.north) {\tiny{softmax}};
    \node [rnnnode,anchor=south,fill=blue!20] (o4) at ([yshift=1em]f4.north) {\tiny{softmax}};
    %\node [anchor=west,inner sep=2pt] (o5) at ([xshift=0.3em]o4.east) {\tiny{...}};
    }
{
    \node [anchor=north,inner sep=2pt] (wt1) at ([yshift=-0.6em]t1.south) {\tiny{$\langle$sos$\rangle$}};
    }
{
    \node [anchor=north,inner sep=2pt] (wt2) at ([yshift=-0.6em]t2.south) {\tiny{How}};
    }
{
    \node [anchor=north,inner sep=2pt] (wt3) at ([yshift=-0.8em]t3.south) {\tiny{are}};
    \node [anchor=north,inner sep=2pt] (wt4) at ([yshift=-0.8em]t4.south) {\tiny{you}};
    }
{
    \node [anchor=center,inner sep=2pt] (wo1) at ([yshift=1.2em]o1.north) {\tiny{How}};
    }
{
    \node [anchor=south,inner sep=2pt] (wos1) at (wo1.north) {\tiny{\textbf{[step 1]}}};
    }
{
    \node [anchor=center,inner sep=2pt] (wo2) at ([yshift=1.2em]o2.north) {\tiny{are}};
    }
{
    \node [anchor=south,inner sep=2pt] (wos2) at (wo2.north) {\tiny{\textbf{[step 2]}}};
    }
{
    \node [anchor=center,inner sep=2pt] (wo3) at ([yshift=1.2em]o3.north) {\tiny{you}};
    \node [anchor=south,inner sep=2pt] (wos3) at (wo3.north) {\tiny{\textbf{[step 3]}}};
    \node [anchor=center,inner sep=2pt] (wo4) at ([yshift=1.2em]o4.north) {\tiny{$\langle$eos$\rangle$}};
    \node [anchor=south,inner sep=2pt] (wos4) at (wo4.north) {\tiny{\textbf{[step 4]}}};
    }

{
    \foreach \x in {1}{
        \draw [->] ([yshift=-0.7em]t\x.south) -- ([yshift=-0.1em]t\x.south);
        \draw [->] ([yshift=0.1em]t\x.north) -- ([yshift=-0.1em]s\x.south);
        \draw [->] ([yshift=0.1em]s\x.north) -- ([yshift=-0.1em]f\x.south);
        \draw [->] ([yshift=0.1em]f\x.north) -- ([yshift=-0.1em]o\x.south);
        \draw [->] ([yshift=0.1em]o\x.north) -- ([yshift=0.8em]o\x.north) node [pos=0.5,right] {\tiny{top1}};
    }
    }

{
    \foreach \x in {2}{
        \draw [->] ([yshift=-0.7em]t\x.south) -- ([yshift=-0.1em]t\x.south);
        \draw [->] ([yshift=0.1em]t\x.north) -- ([yshift=-0.1em]s\x.south);
        \draw [->] ([yshift=0.1em]s\x.north) -- ([yshift=-0.1em]f\x.south);
        \draw [->] ([yshift=0.1em]f\x.north) -- ([yshift=-0.1em]o\x.south);
        \draw [->] ([yshift=0.1em]o\x.north) -- ([yshift=0.8em]o\x.north) node [pos=0.5,right] {\tiny{top1}};
    \draw [->] ([xshift=0.2em,yshift=0.1em]t1.north) .. controls +(north:0.3) and +(south:0.3) .. ([xshift=-0.3em,yshift=-0.1em]s2.south);
    }
    }

{
    \foreach \x in {3,4}{
        \draw [->] ([yshift=-0.7em]t\x.south) -- ([yshift=-0.1em]t\x.south);
        \draw [->] ([yshift=0.1em]t\x.north) -- ([yshift=-0.1em]s\x.south);
        \draw [->] ([yshift=0.1em]s\x.north) -- ([yshift=-0.1em]f\x.south);
        \draw [->] ([yshift=0.1em]f\x.north) -- ([yshift=-0.1em]o\x.south);
        \draw [->] ([yshift=0.1em]o\x.north) -- ([yshift=0.8em]o\x.north) node [pos=0.5,right] {\tiny{top1}};
    %\draw [->] ([xshift=0.4em,yshift=0.1em]t1.north) .. controls +(north:0.25) and +(south:0.3) .. ([xshift=-0.6em,yshift=-0.1em]s3.south);
    %\draw [->] ([xshift=0.2em,yshift=0.1em]t2.north) .. controls +(north:0.2) and +(south:0.4) .. ([xshift=-0.3em,yshift=-0.1em]s3.south);
    \draw [->] ([xshift=-0.6em,yshift=-0.5em]s3.south) .. controls +(north:0) and +(south:0.2) .. ([xshift=-0.3em,yshift=-0.1em]s3.south);
    \draw [->] ([xshift=-1.5em,yshift=-0.5em]s3.south) .. controls +(north:0) and +(south:0.15) .. ([xshift=-0.6em,yshift=-0.1em]s3.south);
    }
    }

{
    \draw [->,thick,dotted] (wo1.east) .. controls +(east:1.0) and +(west:1.0) ..(wt2.west);
    }
{
    \draw [->,thick,dotted] (wo2.east) .. controls +(east:1.3) and +(west:1.1) ..(wt3.west);
    \draw [->,thick,dotted] (wo3.east) .. controls +(east:1.1) and +(west:0.9) ..(wt4.west);
    }

{
    \node [circle,draw,anchor=south,inner sep=3pt,fill=orange!20] (c1) at ([yshift=2em]h2.north) {\tiny{$\mathbi{C}_1$}};
    \node [anchor=south] (c1label) at (c1.north) {\tiny{\textbf{编码-解码注意力机制：上下文}}};
    \draw [->] (h1.north) .. controls +(north:0.6) and +(250:0.9) .. (c1.250);
    \draw [->] (h2.north) .. controls +(north:0.6) and +(270:0.9) .. (c1.270);
    \draw [->] (h3.north) .. controls +(north:0.6) and +(290:0.9) .. (c1.290);
    \draw [->] ([yshift=0.3em]s1.west) .. controls +(west:1) and +(east:1) .. (c1.-30);
    \draw [->] (c1.0) .. controls +(east:1) and +(west:1) .. ([yshift=0em]f1.west);
    }

{
    \node [circle,draw,anchor=north,inner sep=3pt,fill=orange!20] (c2) at ([yshift=-2em]t1.south) {\tiny{$\mathbi{C}_2$}};
    \draw [->] ([xshift=-0.7em]c2.west) -- ([xshift=-0.1em]c2.west);
    \draw [->] ([xshift=0.1em]c2.east) .. controls +(east:0.6) and +(west:0.8) ..([yshift=-0.3em,xshift=-0.1em]f2.west);
    }

{
    \node [circle,draw,anchor=north,inner sep=3pt,fill=orange!20] (c3) at ([yshift=-2em]t2.south) {\tiny{$\mathbi{C}_3$}};
    \draw [->] ([xshift=-0.7em]c3.west) -- ([xshift=-0.1em]c3.west);
    \draw [->] ([xshift=0.1em]c3.east) .. controls +(east:0.6) and +(west:0.8) ..([yshift=-0.3em,xshift=-0.1em]f3.west);
    }

{
    \node [circle,draw,anchor=north,inner sep=3pt,fill=orange!20] (c4) at ([yshift=-2em]t3.south) {\tiny{$\mathbi{C}_4$}};
    \draw [->] ([xshift=-0.7em]c4.west) -- ([xshift=-0.1em]c4.west);
    \draw [->] ([xshift=0.1em]c4.east) .. controls +(east:0.6) and +(west:0.8) ..([yshift=-0.3em,xshift=-0.1em]f4.west);
    }

    \end{scope}
    \end{tikzpicture}