\begin{tikzpicture}

\tikzstyle{opnode}=[rectangle,inner sep=0mm,minimum height=2em,minimum width=4em,rounded corners=5pt,fill=teal!17]
\tikzstyle{cnode}=[circle,draw,minimum size=1.2em]
\tikzstyle{mnode}=[rectangle,inner sep=0mm,minimum height=5em,minimum width=11em,rounded corners=5pt,fill=yellow!20]
\tikzstyle{wnode}=[inner sep=0mm,minimum height=1.5em]

\begin{pgfonlayer}{background}
\node[anchor=west,mnode] (m1) at (0em,0em){};
\node[anchor=west,mnode] (m2) at ([xshift=1em,yshift=0em]m1.east){};
\node[anchor=west,mnode] (m3) at ([xshift=1em,yshift=0em]m2.east){};

\node[anchor=north west,rectangle,inner sep=0mm,minimum height=2.6em,minimum width=3.5em,rounded corners=5pt,fill=blue!20] (ml1) at ([xshift=0em,yshift=-0.5em]m1.south west){};
\node[anchor=west,rectangle,inner sep=0mm,minimum height=2.6em,minimum width=3.5em,rounded corners=5pt,fill=ugreen!20] (ml2) at ([xshift=0.25em,yshift=0em]ml1.east){};
\node[anchor=north east,rectangle,inner sep=0mm,minimum height=2.6em,minimum width=3.5em,rounded corners=5pt,fill=red!20] (ml3) at ([xshift=0em,yshift=-0.5em]m1.south east){};

\node[anchor=north west,rectangle,inner sep=0mm,minimum height=2.6em,minimum width=5.25em,rounded corners=5pt,fill=blue!20] (mc1) at ([xshift=0em,yshift=-0.5em]m2.south west){};
\node[anchor=north east,rectangle,inner sep=0mm,minimum height=2.6em,minimum width=5.25em,rounded corners=5pt,fill=red!20] (mc2) at ([xshift=0em,yshift=-0.5em]m2.south east){};

\node[anchor=north,rectangle,inner sep=0mm,minimum height=2.6em,minimum width=11em,rounded corners=5pt,fill=blue!20] (mr1) at ([xshift=0em,yshift=-0.5em]m3.south){};

\end{pgfonlayer}

{\scriptsize
\node[anchor=south,opnode] (op1) at ([xshift=0em,yshift=1em]m1.north){输出};
\node[anchor=south,opnode] (op2) at ([xshift=0em,yshift=1em]m2.north){输出};
\node[anchor=south,opnode] (op3) at ([xshift=0em,yshift=1em]m3.north){输出};

\node[anchor=north west,wnode,font=\footnotesize,align=left] (w1) at ([xshift=0.3em,yshift=-0.3em]m1.north west){传统机器\\学习};
\node[anchor=north west,wnode,font=\footnotesize] (w2) at ([xshift=0.3em,yshift=-0.3em]m2.north west){深度学习};
\node[anchor=north west,wnode,align=left] (w3) at ([xshift=0.3em,yshift=-0.3em]m3.north west){深度学习和网\\络结构搜索};

{%subfigure-left
\node[anchor=north,wnode,font=\footnotesize] (wl1) at ([xshift=0em,yshift=0em]ml1.north){训练数据};
\node[anchor=north,wnode,font=\footnotesize] (wl2) at ([xshift=0em,yshift=0em]ml2.north){特征信息};
\node[anchor=north,wnode,font=\footnotesize] (wl3) at ([xshift=0em,yshift=0em]ml3.north){模型结构};
\node[anchor=south,wnode,font=\tiny] (wl4) at ([xshift=0em,yshift=0em]ml1.south){人工/自动收集};
\node[anchor=south,wnode] (wl5) at ([xshift=0em,yshift=0em]ml2.south){人工设计};
\node[anchor=south,wnode] (wl6) at ([xshift=0em,yshift=0em]ml3.south){人工设计};

\node[anchor=south,cnode,fill=white] (cl1) at ([xshift=-4em,yshift=1.5em]m1.south){};
\node[anchor=north,cnode,fill=white] (cl2) at ([xshift=0em,yshift=-1em]m1.north){};

\node[anchor=south west,wnode,align=left,font=\tiny] (wl7) at ([xshift=0.5em,yshift=0em]cl1.east){使用{\color{ugreen!60}特征}对{\color{blue!60}数据}\\中信息进行提取};
\node[anchor=west,wnode,align=right,font=\tiny] (wl8) at ([xshift=0.5em,yshift=0em]cl2.east){使用提取的信息对\\{\color{red!50}模型}中的参数\\进行训练};

\draw [-,thick,dotted] ([xshift=0em,yshift=0em]ml1.west) -- ([xshift=0em,yshift=0em]ml1.east);
\draw [-,thick,dotted] ([xshift=0em,yshift=0em]ml2.west) -- ([xshift=0em,yshift=0em]ml2.east);
\draw [-,thick,dotted] ([xshift=0em,yshift=0em]ml3.west) -- ([xshift=0em,yshift=0em]ml3.east);

\draw[->,thick] ([xshift=-1.5em,yshift=-0em]ml1.north)..controls +(north:3em) and +(west:0em)..([xshift=-0em,yshift=-0em]cl1.west) ;
\draw[->,thick] ([xshift=0em,yshift=-0em]ml2.north)..controls +(north:3em) and +(west:0em)..([xshift=-0em,yshift=-0em]cl1.east) ;
\draw[->,thick] ([xshift=0em,yshift=-0em]cl1.north)..controls +(north:2em) and +(west:0em)..([xshift=-0em,yshift=-0em]cl2.west) ;
\draw[->,thick] ([xshift=0em,yshift=-0em]ml3.north)..controls +(north:6em) and +(west:0em)..([xshift=-0em,yshift=-0em]cl2.east) ;
\draw [->,thick] ([xshift=0em,yshift=0em]cl2.north) -- ([xshift=0em,yshift=0em]op1.south);

}

{%subfigure-center
\node[anchor=north,wnode,font=\footnotesize] (wc1) at ([xshift=0em,yshift=0em]mc1.north){训练数据};
\node[anchor=north,wnode,font=\footnotesize] (wc2) at ([xshift=0em,yshift=0em]mc2.north){模型结构};
\node[anchor=south,wnode] (wc3) at ([xshift=0em,yshift=0em]mc1.south){人工/自动收集};
\node[anchor=south,wnode] (wc4) at ([xshift=0em,yshift=0em]mc2.south){人工设计};

\node[anchor=south,cnode,fill=white] (cc1) at ([xshift=-4em,yshift=1.5em]m2.south){};
\node[anchor=north,cnode,fill=white] (cc2) at ([xshift=0em,yshift=-1em]m2.north){};

\node[anchor=south west,wnode,align=left,font=\tiny] (wl7) at ([xshift=0.5em,yshift=0em]cc1.east){使用{\color{red!60}模型}对{\color{blue!60}数据}\\中信息进行提取};
\node[anchor=west,wnode,align=right,font=\tiny] (wl8) at ([xshift=0.5em,yshift=0em]cc2.east){使用提取的信息对\\{\color{red!60}模型}中的参数\\进行训练};

\draw [-,thick,dotted] ([xshift=0em,yshift=0em]mc1.west) -- ([xshift=0em,yshift=0em]mc1.east);
\draw [-,thick,dotted] ([xshift=0em,yshift=0em]mc2.west) -- ([xshift=0em,yshift=0em]mc2.east);

\draw[->,thick] ([xshift=-2em,yshift=-0em]mc1.north)..controls +(north:3em) and +(west:0em)..([xshift=-0em,yshift=-0em]cc1.west) ;
\draw[->,thick] ([xshift=0em,yshift=-0em]mc2.north)..controls +(north:2em) and +(west:0em)..([xshift=-0em,yshift=-0em]cc1.east) ;
\draw[->,thick] ([xshift=0em,yshift=-0em]cc1.north)..controls +(north:2em) and +(west:0em)..([xshift=-0em,yshift=-0em]cc2.west) ;
\draw[->,thick] ([xshift=0em,yshift=-0em]mc2.north)..controls +(north:6em) and +(west:0em)..([xshift=-0em,yshift=-0em]cc2.east) ;
\draw [->,thick] ([xshift=0em,yshift=0em]cc2.north) -- ([xshift=0em,yshift=0em]op2.south);

}

{%subfigure-right
\node[anchor=north,wnode,font=\footnotesize] (wr1) at ([xshift=0em,yshift=0em]mr1.north){训练数据};
\node[anchor=south,wnode] (wr2) at ([xshift=0em,yshift=0em]mr1.south){人工/自动收集};


\node[anchor=south,cnode,fill=white] (cr1) at ([xshift=-2.5em,yshift=2.8em]m3.south){};
\node[anchor=north,cnode,fill=white] (cr2) at ([xshift=0em,yshift=-1em]m3.north){};
\node[anchor=south,cnode,fill=white] (cr3) at ([xshift=-5.8em,yshift=0.7em]m3.south){};

\node[anchor=north,wnode,align=right,font=\tiny] (wr3) at ([xshift=1em,yshift=-0.5em]cr2.south){使用{\color{red!60}模型}提\\取{\color{blue!60}数据}\\中的\\信息};
\node[anchor=west,wnode,align=right,font=\tiny] (wr4) at ([xshift=0.5em,yshift=0em]cr2.east){使用提取的信息对\\{\color{red!60}模型}中的参数\\进行训练};
\node[anchor=west,wnode,align=left,font=\tiny] (wr5) at ([xshift=0.2em,yshift=0em]cr3.east){使用{\color{blue!60}数据}对{\color{red!60}模型}\\的结构进行搜索};

\draw [-,thick,dotted] ([xshift=0em,yshift=0em]mr1.west) -- ([xshift=0em,yshift=0em]mr1.east);

\draw[->,thick] ([xshift=-5.8em,yshift=0em]mr1.north) -- ([xshift=0em,yshift=0em]cr3.south);
\draw[->,thick] ([xshift=0em,yshift=-0em]cr3.north)..controls +(north:1.3em) and +(west:0em)..([xshift=-0em,yshift=-0em]cr1.west) ;
\draw[->,thick] ([xshift=1em,yshift=-0em]mr1.north)..controls +(north:4em) and +(west:0em)..([xshift=-0em,yshift=-0em]cr1.east) ;
\draw[->,thick] ([xshift=0em,yshift=-0em]cr1.north east)..controls +(north:1em) and +(west:0em)..([xshift=-0em,yshift=-0em]cr2.west) ;
\draw[->,thick] ([xshift=5.7em,yshift=-0em]mr1.north)..controls +(north:6em) and +(west:0em)..([xshift=-0em,yshift=-0em]cr2.east) ;
\draw[->,thick] ([xshift=0em,yshift=0em]cr2.north) -- ([xshift=0em,yshift=0em]op3.south);


}

}


\end{tikzpicture}