multi-layer_perceptron.dot

digraph G {
    rankdir = LR;
    label="Multi-layer Perceptron";
    splines=false;
    edge[style=invis];
    ranksep= 1.4;
    {
    node [shape=circle, color=yellow, style=filled, fillcolor=yellow];
    x0 [label=<x<sub>0</sub>>]; 
    a02 [label=<a<sub>0</sub><sup>(2)</sup>>]; 
    }
    {
    node [shape=circle, color=chartreuse, style=filled, fillcolor=chartreuse];
    x1 [label=<x<sub>1</sub>>];
    x2 [label=<x<sub>2</sub>>]; 
    x3 [label=<x<sub>3</sub>>];
    }
    {
    node [shape=circle, color=dodgerblue, style=filled, fillcolor=dodgerblue];
    a12 [label=<a<sub>1</sub><sup>(2)</sup>>];
    a22 [label=<a<sub>2</sub><sup>(2)</sup>>];
    a32 [label=<a<sub>3</sub><sup>(2)</sup>>];
    
    }
    {
      node [shape=circle, color=coral1, style=filled, fillcolor=coral1];
      O1 [label=<a<sub>1</sub><sup>(3)</sup>>];
    }
    {
      node [shape=circle, color=white, style=filled, fillcolor=white];
      O2 [label=<&#375;>];
    }
    {
      rank=same;
      x0->x1->x2->x3;
    }
    {
      rank=same;
      a02->a12->a22->a32;
    }
    {
      rank=same;
      O1;
    }
    
    l1 [shape=plaintext, label="layer 1 (input layer)"];
    l1->x0;
    {rank=same; l1;x0};
    l2 [shape=plaintext, label="layer 2 (hidden layer)"];
    l2->a02;
    {rank=same; l2;a02};
    l3 [shape=plaintext, label="layer 3 (output layer)"];
    l3->O1;
    {rank=same; l3;O1};
    l4 [shape=plaintext, label=""];
    l4->O2;
    {rank=same; l4;O2};
    edge[style=solid, tailport=e, headport=w];
    {x0}->{a12} [label=<w<sub>10</sub><sup>(1)</sup>>]
    {x0}->{a22; a32}
    {x3}->{a32} [label=<w<sub>33</sub><sup>(1)</sup>>]
    {x1; x2; x3} -> {a12;a22;a32;};
    {a02;a12;a22;a32} -> {O1,O1,O1,O1};
    {O1}->{O2};
}