nn_3in_3_h_3_out+neuralnet.tex

% https://newbiettn.github.io/2016/12/16/tikz/
% Unit circle
% Author: The Author
% What this does
\documentclass[landscape]{article}
\usepackage{tikz}

% DON'T FORGET TO ADD THOSE IN THE HEADER OF LATEX FILES
%\usepackage{tikz}
\usetikzlibrary{arrows,backgrounds}
\usepgflibrary{shapes.multipart}

%%%<
\usepackage{verbatim}
\usepackage[active,tightpage]{preview}
\PreviewEnvironment{tikzpicture}
\setlength\PreviewBorder{5pt}%
%%%>

\begin{comment}
	:Title: the title
	
	Describe the application
\end{comment}

\usepackage[top=1in,bottom=1in,right=1in,left=1in]{geometry}

\begin{document}


\begin{tikzpicture}
\tikzstyle{place}=[circle, draw=black, minimum size = 8mm]

% Input
\draw node at (0, -1.25) [place] (first_1) {$x^{(1)}_0$};
\draw node at (0, -2*1.25) [place] (first_2) {$x^{(1)}_1$};
\draw node at (0, -3*1.25) [place] (first_3) {$x^{(1)}_2$};	

% Hidden 1
\foreach \x in {1,...,3}
\node at (4, -\x*1.25) [place] (second_\x){$a^{(2)}_\x$};

% Output
\foreach \x in {2,...,2}
\node at (8, -\x*1.25) [place] (fourth_\x){$a^{(3)}_\x$};

\foreach \x in {2,...,2}
\node at (10, -\x*1.25) [circle, ] (output_\x){$y_\x$};

% Input -> Hidden
\foreach \i in {1,...,3}
\foreach \j in {1,...,3}
\draw [->] (first_\i) to (second_\j);

% Hidden -> Output
\foreach \i in {1,...,3}
\foreach \j in {2,...,2}
\draw [->] (second_\i) to (fourth_\j);

\foreach \i in {2,...,2}
\draw [->] (fourth_\i) to (output_\i);


%Parameters theta
\node at (2, 0) [black, ] {$\Theta^{(1)}$};
\node at (6, 0) [black, ] {$\Theta^{(2)}$};
\node at (4, 0) [black, ] {$a^{(2)}$};
\node at (8, 0) [black, ] {$a^{(3)}$};

\end{tikzpicture}
\end{document}