graph1.tex

\usetikzlibrary{calc}
\usetikzlibrary{arrows.meta}

\tikzset{
    base above/.style={anchor=base, yshift=\pgfkeysvalueof{/pgf/inner ysep}},
    start/.style={very near start,base above},
    end/.style={very near end,base above}
    }

\begin{tikzpicture}
	\def\dist{1.5}
	
	\def\x{0}
	\node (Z0) at (\dist*\x,0) {$Z_0$};

	\def\x{1}
	\node (Z1) at (\dist*\x,0) {$Z_1$};
	\node (b) at (\dist*\x,-\dist) {$b_1$};
	\node (W) at (\dist*\x,\dist) {$W_1$};
	\draw[->](b) -- (Z1);
	\draw[->](W) -- (Z1);
	
	\def\x{2}
	\node (Z2) at (\dist*\x,0) {$Z_2$};
	\node (b) at (\dist*\x,-\dist) {$b_2$};
	\node (W) at (\dist*\x,\dist) {$W_2$};
	\draw[->](b) -- (Z2);
	\draw[->](W) -- (Z2);

	\def\x{3}
	\node (Z3) at (\dist*\x,0) {$\cdots$};
	\node (b) at (\dist*\x,-\dist) {$\cdots$};
	\node (W) at (\dist*\x,\dist) {$\cdots$};

	\def\x{4}
	\node (ZL) at (\dist*\x,0) {$Z_L$};
	\node (b) at (\dist*\x,-\dist) {$b_L$};
	\node (W) at (\dist*\x,\dist) {$W_L$};
	\draw[->](b) -- (ZL);
	\draw[->](W) -- (ZL);

	\def\x{5}
	\node (J1) at (\dist*\x,0) {$J_1$};

	\draw[->](Z0) -- (Z1);
	\draw[->](Z1) -- (Z2);
	\draw[->](Z2) -- (Z3);
	\draw[->](Z3) -- (ZL);
	\draw[->](ZL) -- (J1);
\end{tikzpicture}