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LaTeX Commands for Graphs

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LaTeX codes for inserting graphs using TikZ package

Directed acyclic graph

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\usepackage{tikz}
\usetikzlibrary{bayesnet}

\begin{figure}[!ht]
	\centering
	\begin{tikzpicture}[scale=1.0,transform shape,
	state/.style={circle,draw,thick,loop above,inner sep=0,minimum width=10}]
		\node[latent] (x1) {$x_{1}$};
		\node[latent, below=of x1, xshift=-1.5cm] (x2) {$x_{2}$};
		\node[latent, below=of x1, xshift=-0.5cm] (x3) {$x_{3}$};
		\node[latent, below=of x1, xshift=0.5cm] (x5) {$x_{5}$};
		\node[latent, below=of x1, xshift=1.5cm] (x8) {$x_{8}$};
		\edge {x1}{x2, x3, x5, x8};

		\node[latent, below=of x2] (x7) {$x_{7}$};
		\node[latent, below=of x3] (x4) {$x_{4}$};
		\node[latent, below=of x5] (x9) {$x_{9}$};
		\node[latent, below=of x8] (x10) {$x_{10}$};
		\edge {x2}{x7};
		\edge {x3}{x4};
		\edge {x5}{x9, x10};

		\node[latent, below=of x4] (x6) {$x_{6}$};
		\edge {x4}{x6};
		\end{tikzpicture}
		\caption{exmp}
		\label{fig:exmp}
\end{figure}
graph 1

Graphical model

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\begin{figure}[t]
    \centering
    \begin{tikzpicture}
    % Define nodes
    \node[obs]                       (y) {$Y$};
    \node[latent, above=of y]        (f) {$\mathbf{f}$};
    \node[obs, above=of f]           (X) {$X$};
    \node[latent, right=1.0cm of X]  (tha) {$\Theta$};
    \node[latent, right=1.0cm of f]  (t) {$E$};
    \node[latent, right=1.0cm of t]  (beta){$\beta$};

    % Connect the nodes
    \edge {f,t} {y};
    \edge {tha} {f};
    \edge {X} {f};
    \edge {beta} {t};
    % Plates

    \plate {yx} {(X)(y)(f)(tha)(t)} {$N$};
    \end{tikzpicture}
    \centering
    \caption{Graphical model}
    \label{gmdl}
\end{figure}
graph 2