drawtikz-graphdrawingtikz-graphstikz-pgf
I need to draw a recurrent neural network that has the same architecture has the following one
In other words, a RNN with one input, one single hidden and recurrent unit and one output.
However, I would like it to have the following Goodfellow's style, so, in other words, I want all units to be (white or gray) circles.
I tried to look at other posts. For example, the following one: How to Draw Recurrent Neural Network, but I am not sure know how to modify the code.
Here, we a have a festival of \foreach:
\documentclass[border=0.125cm]{standalone}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}
\tikzset{%
every neuron/.style={
circle,
draw,
minimum size=1cm
},
neuron missing/.style={
draw=none,
scale=4,
text height=0.333cm,
execute at begin node=\color{black}$\vdots$
},
}
\begin{tikzpicture}[x=1.5cm, y=1.5cm, >=stealth]
\foreach \m/\l [count=\y] in {1,2,3,missing,4}
\node [every neuron/.try, neuron \m/.try] (input-\m) at (0,2.5-\y) {};
\foreach \m [count=\y] in {1,missing,2}
\node [every neuron/.try, neuron \m/.try ] (hidden-\m) at (2,2-\y*1.25) {};
\foreach \m [count=\y] in {1,missing,2}
\node [every neuron/.try, neuron \m/.try ] (output-\m) at (4,1.5-\y) {};
\foreach \l [count=\i] in {1,2,3,n}
\draw [<-] (input-\i) -- ++(-1,0)
node [above, midway] {$I_\l$};
\foreach \l [count=\i] in {1,n}
\node [above] at (hidden-\i.north) {$H_\l$};
\foreach \l [count=\i] in {1,n}
\draw [->] (output-\i) -- ++(1,0)
node [above, midway] {$O_\l$};
\foreach \i in {1,...,4}
\foreach \j in {1,...,2}
\draw [->] (input-\i) -- (hidden-\j);
\foreach \i in {1,...,2}
\foreach \j in {1,...,2}
\draw [->] (hidden-\i) -- (output-\j);
\foreach \l [count=\x from 0] in {Input, Hidden, Ouput}
\node [align=center, above] at (\x*2,2) {\l \\ layer};
\end{tikzpicture}
\end{document}
Although it seems unwise to have n denote the number of nodes in each layer when they could be different and the arrangement of the diagram suggests they are not.
Here is a modification of that code where you set the number of hidden layers in a macro, and the rest is done automatically.
\documentclass{article}
\usepackage{tikz}
\begin{document}
\pagestyle{empty}
\def\layersep{1.5cm}
\begin{tikzpicture}[
shorten >=1pt,->,
draw=black!50,
node distance=\layersep,
every pin edge/.style={<-,shorten <=1pt},
neuron/.style={circle,fill=black!25,minimum size=17pt,inner sep=0pt},
input neuron/.style={neuron, fill=green!50},
output neuron/.style={neuron, fill=red!50},
hidden neuron/.style={neuron, fill=blue!50},
annot/.style={text width=4em, text centered}
]
% Draw the input layer nodes
\foreach \name / \y in {1,...,4}
% This is the same as writing \foreach \name / \y in {1/1,2/2,3/3,4/4}
\node[input neuron, pin=left:Input \#\y] (I-\name) at (0,-\y) {};
% set number of hidden layers
\newcommand\Nhidden{3}
% Draw the hidden layer nodes
\foreach \N in {1,...,\Nhidden} {
\foreach \y in {1,...,5} {
\path[yshift=0.5cm]
node[hidden neuron] (H\N-\y) at (\N*\layersep,-\y cm) {};
}
\node[annot,above of=H\N-1, node distance=1cm] (hl\N) {Hidden layer \N};
}
% Draw the output layer node
\node[output neuron,pin={[pin edge={->}]right:Output}, right of=H\Nhidden-3] (O) {};
% Connect every node in the input layer with every node in the
% hidden layer.
\foreach \source in {1,...,4}
\foreach \dest in {1,...,5}
\path (I-\source) edge (H1-\dest);
% connect all hidden stuff
\foreach [remember=\N as \lastN (initially 1)] \N in {2,...,\Nhidden}
\foreach \source in {1,...,5}
\foreach \dest in {1,...,5}
\path (H\lastN-\source) edge (H\N-\dest);
% Connect every node in the hidden layer with the output layer
\foreach \source in {1,...,5}
\path (H\Nhidden-\source) edge (O);
% Annotate the layers
\node[annot,left of=hl1] {Input layer};
\node[annot,right of=hl\Nhidden] {Output layer};
\end{tikzpicture}
% End of code
\end{document}
With \newcommand\Nhidden{3}:
With \newcommand\Nhidden{6}:
Best Answer
I am not sure if this is the purpose of this site. IMHO you should try yourself and if you get stuck you will get much more enthusiastic answers, but anyway...