我想用我的 ANN 来表示一篇文章，但有 12 个神经元，它就变得太混乱了。那么我如何在节点后添加三个点，然后将最后一个节点添加到它上面呢？
\documentclass{standalone}
\usepackage{tikz}
\begin{document}
\pagestyle{empty}
\def\layersep{3cm}
\def\nodeinlayersep{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,...,3}
% 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{2}
% Draw the hidden layer nodes
\foreach \N in {1,...,\Nhidden} {
\foreach \y in {1,...,12} {
\path[yshift=7cm]
node[hidden neuron] (H\N-\y) at (\N*\layersep,-\y*\nodeinlayersep ) {$\frac{1}{1+e^{-x}}$};
}
\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-6] (O) {};
%
% Connect every node in the input layer with every node in the
% hidden layer.
\foreach \source in {1,...,3}
\foreach \dest in {1,...,12}
\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,...,12}
\foreach \dest in {1,...,12}
\path (H\lastN-\source) edge (H\N-\dest);
% Connect every node in the hidden layer with the output layer
\foreach \source in {1,...,12}
\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}
答案1
这就是你想要的吗？我在代码中对修改的地方添加了注释。
\documentclass{standalone}
\usepackage{tikz}
\begin{document}
\pagestyle{empty}
\def\layersep{3cm}
\def\nodeinlayersep{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,...,3}
% 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-2.5) {}; %%% <-- MODIFIED
% set number of hidden layers
\newcommand\Nhidden{2}
% Draw the hidden layer nodes
\foreach \N in {1,...,\Nhidden} {
\foreach \y in {1,...,5} { %%% MODIFIED (1,...,12 -> 1,...,5, and the next five lines)
\ifnum \y=4
\node at (\N*\layersep,-\y*\nodeinlayersep) {$\vdots$};
\else
\node[hidden neuron] (H\N-\y) at (\N*\layersep,-\y*\nodeinlayersep ) {$\frac{1}{1+e^{-x}}$};
\fi
}
\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) {}; %%% <-- MODIFIED (from H\Nhidden-6 to H\Nhidden-3)
% Connect every node in the input layer with every node in the
% hidden layer.
\foreach \source in {1,...,3}
\foreach \dest in {1,...,3,5} %%% <-- MODIFIED (1,...,12 -> 1...,3,5)
\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,...,3,5} %%% <-- MODIFIED (1,...,12 -> 1...,3,5)
\foreach \dest in {1,...,3,5} %%% <-- MODIFIED (1,...,12 -> 1...,3,5)
\path (H\lastN-\source) edge (H\N-\dest);
% Connect every node in the hidden layer with the output layer
\foreach \source in {1,...,3,5} %%% <-- MODIFIED (1,...,12 -> 1...,3,5)
\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}