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绘制具有许多节点的图形模型

tag-icon • tag-icon tikz-pgf graphs
绘制具有许多节点的图形模型

所以我试着按照https://stats.stackexchange.com/questions/16750/software-for-drawing-bayesian-networks-graphical-models但收效甚微。

我的问题是

  1. 如何在不写下所有变量的情况下合并多个变量（例如只说 $\pi_1 - \pi_k$ 或类似的）
  2. 我如何合并连接到 $\pi_3, \pi_k$ 的“幽灵节点”。

在此处输入图片描述

答案1

基于搜索矩阵我想到了这个：这不是最漂亮的解决方案，但与你的图片很接近。

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{shapes, arrows, calc, positioning,matrix}
\tikzset{
data/.style={circle, draw, text centered, minimum height=3em ,minimum width = .5em, inner sep = 2pt},
empty/.style={circle, text centered, minimum height=3em ,minimum width = .5em, inner sep = 2pt},
}
\begin{document}
\begin{tikzpicture}[
align = flush center,
font = \small]
\matrix [
    matrix of nodes,
    column sep = 0.5em,
    row sep = 1.3em, 
    draw, dashed,
    nodes = {solid},
    ] (m)
{  
|[data]|$\pi_1$ &  |[data]|$\pi_2$ & |[data]|$\pi_3$ & |[empty]| & |[data]|$\pi_K$ \\
|[data]|$C_1$ &  |[data]|$C_2$ & |[data]|$C_3$ & |[empty]| & |[data]|$C_K$ \\
|[data]|$w_1$ &  |[data]|$w_2$ & |[data]|$w_3$ & |[empty]| & |[data]|$w_K$ \\
|[data]|$D_1$ &  |[data]|$D_2$ & |[empty]| & |[empty]| & |[data]|$D_N$ \\[.7em]
}; 
\draw[->](m-1-1) to (m-2-1);
\draw[->](m-2-1) to (m-3-1);
\draw[->](m-3-1) to (m-4-1);
\draw[->](m-3-1) to (m-1-2);
\draw[->](m-3-1.south) to (m-4-5);

\draw[->](m-1-2) to (m-2-2);
\draw[->](m-2-2) to (m-3-2);
\draw[->](m-3-2) to (m-1-1);
\draw[->](m-3-2) to (m-1-3);
\draw[->](m-3-2.south) to (m-4-1);
\draw[->](m-3-2.south) to (m-4-5);

\draw[->](m-1-3) to (m-2-3);
\draw[->](m-2-3) to (m-3-3);
\draw[->](m-3-3) to (m-1-2);

\draw[->](m-2-4) to (m-1-3);
\draw[->](m-3-4) to (m-1-5);

\draw[->](m-1-5) to (m-2-5);
\draw[->](m-2-5) to (m-3-5);
\draw[->](m-3-5) to (m-4-5);

\end{tikzpicture}
\end{document}

在此处输入图片描述

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