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probml
GitHub Repository: probml/pyprobml
 Path: blob/master/tikz/hbnn-mlp-tikz.tex
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\documentclass[tikz, border=2pt]{standalone}

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\usepackage[utf8]{inputenc}

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\usepackage{tikz}

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\usetikzlibrary{bayesnet}

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\begin{document}

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% \author{Karm Patel}

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% \date{July 2022}

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% \maketitle

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\tikzstyle{constant} = [circle, draw=black!0, minimum size = 4mm]

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\tikzstyle{detH} = [circle, double, thick, draw=black!75, minimum size=4mm]

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\tikzstyle{det} = [circle, double, thick, draw=black!75, fill=gray!20, minimum size=4mm]

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\begin{tikzpicture}

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    \node [obs](y_n){$y_{n}^e$};

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    \node [det, below= of y_n](z2_n){$z_{2n}^j$};

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    \edge{z2_n}{y_n};

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    \node [det, below= of z2_n](z1_n){$z_{1n}^j$};

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    \edge{z1_n}{z2_n};

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	\node [obs, below= of z1_n](x_n){$x_{n}^j$};

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	\edge{x_n}{z1_n};

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	\plate[inner sep=.3cm]{plate_inner}{(y_n)(z1_n)(z2_n)(x_n)}{$n=1:N_{j}$};

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	\node [detH, right=2cm of y_n](w3){$w_{3}^j$};

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	\node [latent, above left= 0.5cm of w3](e3){$\epsilon_{3}^j$};

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    \edge{e3}{w3};

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    \edge{w3}{y_n}

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    \node [detH, right=2cm of z2_n](w2){$w_{2}^j$};

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	\node [latent, above left= 0.5 cm of w2](e2){$\epsilon_{2}^j$};

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    \edge{e2}{w2};

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    \edge{w2}{z2_n}

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    \node [detH, right=2cm of z1_n](w1){$w_{1}^j$};

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	\node [latent, above left= 0.5 cm of w1](e1){$\epsilon_{1}^j$};

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    \edge{e1}{w1};

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    \edge{w1}{z1_n}

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    \plate[inner sep=.3cm]{plate_outer}{(plate_inner)(e3)(w1)(w2)(w3)}{$j=1:J$};

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    \node [latent, above right=1cm of w3](sigma3){$\sigma_{3}^0$};

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    \node[latent, right=1.2cm of w3](w30){$w_{3}^0$};

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    \edge{sigma3}{w3}

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    \edge{w30}{w3}

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    \node [latent, above right=1cm of w2](sigma2){$\sigma_{2}^0$};

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    \node[latent, right=1.2cm of w2](w20){$w_{2}^0$};

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    \edge{sigma2}{w2}

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    \edge{w20}{w2}

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     \node [latent, above right=1cm of w1](sigma1){$\sigma_{1}^0$};

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    \node[latent, right=1.2cm of w1](w10){$w_{1}^0$};

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    \edge{sigma1}{w1}

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    \edge{w10}{w1}

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\end{tikzpicture}

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\end{document}

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