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Half Adder Example #41

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0b4a2c0
Half Adder Example
JonasFovea Feb 8, 2018
6c7106f
Merge branch 'master' into JonasExample
JonasFovea Feb 8, 2018
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13 changes: 13 additions & 0 deletions examples/half_adder/index.html
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<!DOCTYPE html>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.16/p5.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.16/addons/p5.dom.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.16/addons/p5.sound.min.js"></script>
<script src="sketch.js"></script>
<script src="../../lib/nn.js"></script>
<script src="../../lib/matrix.js"></script>
</head>
<body>
</body>
</html>
65 changes: 65 additions & 0 deletions examples/half_adder/sketch.js
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let nn;
let training_data = [{
inputs: [0, 0],
targets: [0,0]
}, {
inputs: [1, 0],
targets: [0,1]
}, {
inputs: [0, 1],
targets: [0,1]
}, {
inputs: [1, 1],
targets: [1,0]
}];

let lr_slider;

function setup() {
createElement('h1',"Half adder example");
createP("In this example the NN learns, how to act as half adder.")
createP("The half adder adds two single binary digits A and B. It has two outputs, sum (S) and carry (C). The carry signal represents an overflow into the next digit of a multi-digit addition.")

createDiv('');

createCanvas(400, 400);
nn = new NeuralNetwork(2, 4, 2);
lr_slider = createSlider(0.01, 0.1, 0.01, 0.01);

createDiv('');
createP("example made by JonasFovea")
}

function draw() {
background(0);

nn.learning_rate = lr_slider.value();

for (let i = 0; i < 100; i++) {
let data = random(training_data);
nn.train(data.inputs, data.targets);
}

let resolution = 10;
let cols = floor(width / resolution);
let rows = floor(height / resolution);

for (let i = 0; i < cols; i++) {
for (let j = 0; j < rows; j++) {
let x = i * resolution;
let y = j * resolution;
let input_1 = i / (cols - 1);
let input_2 = j / (rows - 1);
let output = nn.predict([input_1, input_2]);
let col1 = output[0] * 255;
let col2 = output[1] * 255;
let col3 = col1-col2;

fill(col1,col2,col3);
stroke(100,20,80);
noStroke();
rect(x, y, resolution, resolution);
}
}

}