%%% outline
%-------------------------------------------------------------------------
\begin{tikzpicture}

{
{
\node [anchor=north west] (st) at (0,0) {$\seq{s}$};
\node [anchor=north] (taut) at ([yshift=-3em]st.south) {\sffamily\bfseries{$\tau$}};
\node [anchor=north] (phit) at ([yshift=-3em]taut.south) {\sffamily\bfseries{$\phi$}};
\node [anchor=north] (tt) at ([yshift=-3em]phit.south) {$\seq{t}$};
}
{\scriptsize
\node [anchor=west,minimum height=2.5em,minimum width=5.0em] (sf1) at ([xshift=1em]st.east) {};
\node [rectangle,draw,anchor=west,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=green!30,drop shadow] (s1) at ([xshift=2.5em]sf1.east) {科学家};
\node [rectangle,draw,anchor=west,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=green!30,drop shadow] (s2) at ([xshift=2.5em]s1.east) {们};
\node [rectangle,draw,anchor=west,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=green!30,drop shadow] (s3) at ([xshift=2.5em]s2.east) {并不};
\node [rectangle,draw,anchor=west,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=green!30,drop shadow] (s4) at ([xshift=2.5em]s3.east) {知道};
}


{\scriptsize
\node [anchor=west] (tau11) at ([xshift=1.24em]taut.east) {$\tau_0$\; \tiny{1.NULL}};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=red!30,drop shadow] (tau1) [fit = (tau11)] {};
\end{pgfonlayer}

\node [anchor=west] (tau21) at ([xshift=1.575em]tau1.east) {$\tau_1$\;};
\node [anchor=west] (tau22) at ([yshift=-0.2em,xshift=-0.5em]tau21.north east) {\tiny{1.科学家}};
\node [anchor=west] (tau23) at ([yshift=0.2em,xshift=-0.5em]tau21.south east) {\tiny{2.们}};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=red!30,drop shadow] (tau2)[fit = (tau21) (tau22) (tau23)] {};
\end{pgfonlayer}

\node [anchor=west] (tau31) at ([xshift=1.997em]tau2.east) {$\tau_2$\; \tiny{1.NULL}};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=red!30,drop shadow] (tau3) [fit = (tau31)] {};
\end{pgfonlayer}

\node [anchor=west] (tau41) at ([xshift=2.153em]tau3.east) {$\tau_3$\; \tiny{1.并不}};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=red!30,drop shadow] (tau4) [fit = (tau41)] {};
\end{pgfonlayer}

\node [anchor=west] (tau51) at ([xshift=2.1525em]tau4.east) {$\tau_4$\; \tiny{1.知道}};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=red!30,drop shadow] (tau5) [fit = (tau51)] {};
\end{pgfonlayer}
}


{\scriptsize
\node [anchor=west] (phi11) at ([xshift=2.3em]phit.east) {$\phi_0$\ 0};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=blue!30,drop shadow] (phi1) [fit = (phi11)] {};
\end{pgfonlayer}

\node [anchor=west] (phi21) at ([xshift=2.867em]phi1.east) {$\phi_1$\ 2};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=blue!30,drop shadow] (phi2) [fit = (phi21)] {};
\end{pgfonlayer}

\node [anchor=west] (phi31) at ([xshift=3.087em]phi2.east) {$\phi_2$\ 0};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=blue!30,drop shadow] (phi3) [fit = (phi31)] {};
\end{pgfonlayer}

\node [anchor=west] (phi41) at ([xshift=3.086em]phi3.east) {$\phi_3$\ 1};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=blue!30,drop shadow] (phi4) [fit = (phi41)] {};
\end{pgfonlayer}

\node [anchor=west] (phi51) at ([xshift=3.086em]phi4.east) {$\phi_4$\ 1};
\begin{pgfonlayer}{background}
\node [rounded rectangle,draw,line width=1pt,minimum height=3.0em,minimum width=7.0em,fill=blue!30,drop shadow] (phi5) [fit = (phi51)] {};
\end{pgfonlayer}

}

\draw [->,thick,dashed] ([yshift=-1.4em]st.south west) -- ([xshift=0.8em,yshift=-1em]s4.south east);
\draw [->,thick,dashed] ([yshift=-5.8em]st.south west) -- ([xshift=0.8em,yshift=-5.4em]s4.south east);
\draw [->,thick,dashed] ([yshift=-10.3em]st.south west) -- ([xshift=0.8em,yshift=-9.9em]s4.south east);

{\scriptsize
\node [rectangle,draw,anchor=north,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=yellow!30,drop shadow] (t1) at ([xshift=0.182em,yshift=-15em]sf1.south) {$t_0$};
\node [rectangle,draw,anchor=north,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=yellow!30,drop shadow] (t2) at ([yshift=-15em]s1.south) {Scientists};
\node [rectangle,draw,anchor=north,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=yellow!30,drop shadow] (t3) at ([yshift=-15em]s2.south) {do};
\node [rectangle,draw,anchor=north,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=yellow!30,drop shadow] (t4) at ([yshift=-15em]s3.south) {not};
\node [rectangle,draw,anchor=north,line width=1pt,minimum height=2.5em,minimum width=5.0em,fill=yellow!30,drop shadow] (t5) at ([yshift=-15em]s4.south) {know};
}
%第一层连线
\draw [->,thick] (tau2.north) -- (s1.south);
\draw [->,thick] (tau4.north) -- (s3.south);
\draw [->,thick] (tau5.north) -- (s4.south);
\draw [->,thick] (tau23.east) -- (s2.south);
%第二层连线
\draw [->,thick] (phi1.north) -- (tau1.south);
\draw [->,thick] (phi2.north) -- (tau2.south);
\draw [->,thick] (phi3.north) -- (tau3.south);
\draw [->,thick] (phi4.north) -- (tau4.south);
\draw [->,thick] (phi5.north) -- (tau5.south);
%第三层连线
\draw [->,thick] (t1.north) -- (phi1.south);
\draw [->,thick] (t2.north) -- (phi2.south);
\draw [->,thick] (t3.north) -- (phi3.south);
\draw [->,thick] (t4.north) -- (phi4.south);
\draw [->,thick] (t5.north) -- (phi5.south);

{\scriptsize
\node [anchor=west] (sent11) at ([xshift=1em,yshift=-0.3em]s4.south east) {把这些元语};
\node [anchor=west] (sent12) at ([yshift=-1em]sent11.west) {言单词放在};
\node [anchor=west] (sent13) at ([yshift=-1em]sent12.west) {合适的位置};
\node [anchor=west] (sent21) at ([yshift=-4.6em]sent13.west) {确定生成元};
\node [anchor=west] (sent22) at ([yshift=-1em]sent21.west) {语言单词};
\node [anchor=west] (sent31) at ([yshift=-4.6em]sent22.west) {确定生成元};
\node [anchor=west] (sent32) at ([yshift=-1em]sent31.west) {语言单词的};
\node [anchor=west] (sent33) at ([yshift=-1em]sent32.west) {个数};
}

{\scriptsize
\node [anchor=west] (f1) at ([yshift=-2em]t1.south west) {$\phi_{0}=0,\phi_{1}=2,\phi_{3}=0,\phi_{4}=1$};
\node [anchor=west] (f2) at ([yshift=-2em]f1.west) {$\tau_{0}=\{ \},\tau_{1}=\{ \tau_{11}=' \textrm{科学家}',\tau_{12}=' \textrm{们}' \},\phi_{3}=\{ \tau_{31}=' \textrm{并不}' \},\phi_{4}=\{ \tau_{41}=' \textrm{知道}' \}$};
\node [anchor=west] (f3) at ([yshift=-2em]f2.west) {$\pi_{0}=\{ \},\pi_{1}=\{\pi_{11}=1,\pi_{12}=2\},\pi_{2}=\{ \},\pi_{3}=\{\pi_{31}=3\},\pi_{4}=\{\pi_{41}=4\}$};
}

}
\end{tikzpicture}
%---------------------------------------------------------------------