![神经网络 tikz 图的输出层上的多个输出居中](https://linux22.com/image/412434/%E7%A5%9E%E7%BB%8F%E7%BD%91%E7%BB%9C%20tikz%20%E5%9B%BE%E7%9A%84%E8%BE%93%E5%87%BA%E5%B1%82%E4%B8%8A%E7%9A%84%E5%A4%9A%E4%B8%AA%E8%BE%93%E5%87%BA%E5%B1%85%E4%B8%AD.png)
这个问题正在构建一个解决方案这里。下面的代码需要优化,因为输出层没有位于图的其余部分的中心。
我想知道如何将输出层与图形的其余部分置于中心。
另外,我想知道如何设置输出层的正确位置,而不是像现在这样进行硬编码:
\node[output neuron, pin=right:Output \#\y] (O-\name) at (4*\layersep,-\y) {};
这是我目前拥有的代码:
\documentclass{article}
\usepackage{tikz}
\begin{document}
\pagestyle{empty}
\def\layersep{2.5cm}
\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,...,8}
% 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,...,9} {
\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
\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[output neuron, pin=right:Output \#\y] (O-\name) at (4*\layersep,-\y) {};
% How to calculate the exact location of the output layers instead of hardcoding the value
% Connect every node in the input layer with every node in the
% hidden layer.
\foreach \source in {1,...,8}
\foreach \dest in {1,...,9}
\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,...,9}
\foreach \dest in {1,...,9}
\path (H\lastN-\source) edge (H\N-\dest);
% Connect every node in the hidden layer with the output layer
\foreach [remember=\N as \lastN (initially 3)] \N in {2,...,\Nhidden}
\foreach \source in {1,...,9}
\foreach \dest in {1,...,4}
\path (H\lastN-\source) edge (O-\dest);
% 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
将输出层中的节点坐标从 更改(4*\layersep,-\y)
为(4*\layersep,-\y-2)
:
完成 MWE:
\documentclass[tikz, margin=3mm]{standalone}
\begin{document}
\def\layersep{2.5cm}
\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,...,8}
% 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,...,9} {
\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
\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[output neuron,
pin=right:Output \#\y] (O-\name)
at (4*\layersep,-\y-2) {}; % <-----------
% How to calculate the exact location of the output layers instead of hardcoding the value
% Connect every node in the input layer with every node in the
% hidden layer.
\foreach \source in {1,...,8}
\foreach \dest in {1,...,9}
\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,...,9}
\foreach \dest in {1,...,9}
\path (H\lastN-\source) edge (H\N-\dest);
% Connect every node in the hidden layer with the output layer
\foreach [remember=\N as \lastN (initially 3)] \N in {2,...,\Nhidden}
\foreach \source in {1,...,9}
\foreach \dest in {1,...,4}
\path (H\lastN-\source) edge (O-\dest);
% Annotate the layers
\node[annot,left of=hl1] {Input layer};
\node[annot,right of=hl\Nhidden] {Output layer};
\end{tikzpicture}
\end{document}
答案2
很难给你一个非硬编码的答案,因为所有其他值都是硬编码的。你需要
at (4*\layersep,{-\y*1cm-(9-4-1)*0.5cm})
因为每层有 9 个隐藏节点,4 个输出节点,然后[yshift=0.5cm]
在隐藏神经元的构造中有一个硬编码,因此额外的-1
。结果是,如果您将输出节点的数量从更改4
为另一个值,则需要将4
上述公式中的更改为相同的值。
\documentclass{article}
\usepackage{tikz}
\begin{document}
\pagestyle{empty}
\def\layersep{2.5cm}
\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,...,8}
% 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,...,9} {
\path[yshift=0.5cm]
node[hidden neuron] (H\N-\y) at (\N*\layersep,-\y*1cm) {};
}
\node[annot,above of=H\N-1, node distance=1cm] (hl\N) {Hidden layer \N};
}
% Draw the output layer node
\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[output neuron, pin=right:Output \#\y] (O-\name)
at (4*\layersep,{-\y*1cm-(9-4-1)*0.5cm}) {};
% How to calculate the exact location of the output layers instead of hardcoding the value
% Connect every node in the input layer with every node in the
% hidden layer.
\foreach \source in {1,...,8}
\foreach \dest in {1,...,9}
\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,...,9}
\foreach \dest in {1,...,9}
\path (H\lastN-\source) edge (H\N-\dest);
% Connect every node in the hidden layer with the output layer
\foreach [remember=\N as \lastN (initially 3)] \N in {2,...,\Nhidden}
\foreach \source in {1,...,9}
\foreach \dest in {1,...,4}
\path (H\lastN-\source) edge (O-\dest);
% Annotate the layers
\node[annot,left of=hl1] {Input layer};
\node[annot,right of=hl\Nhidden] {Output layer};
\end{tikzpicture}
\end{document}