I taught a neural network to recognize a cross

index.js

var nn = require('nn');

var correct = [
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 1,
    0, 0, 0, 0, 0, 0, 0, 1
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    1, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 1, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 1, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 1, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 1,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 1, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
];

var incorrect = [
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1
  ],
  [
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 0, 0, 0, 1, 1, 1, 1,
    1, 0, 0, 0, 1, 1, 1, 1,
    1, 0, 0, 0, 1, 1, 1, 1,
    1, 0, 0, 0, 1, 1, 1, 1,
    1, 0, 0, 0, 1, 1, 1, 1,
    1, 0, 0, 0, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1
  ],
  [
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1,
    0, 0, 0, 0, 0, 0, 0, 0,
    1, 1, 1, 1, 1, 1, 1, 1,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    1, 1, 1, 1, 1, 1, 1, 1
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 0, 0, 0, 0,
    1, 1, 1, 1, 1, 1, 1, 1,
    0, 1, 0, 0, 1, 1, 1, 1,
    1, 0, 0, 1, 1, 1, 1, 1,
    0, 1, 0, 0, 1, 1, 1, 1,
    0, 1, 0, 0, 1, 1, 1, 1
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
];

var test = [
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 1, 1, 1, 1, 1, 1, 0,
    0, 1, 1, 1, 1, 1, 1, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 1, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
  ],
  [
    1, 1, 1, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 1, 1, 1, 1, 0, 0,
    0, 0, 0, 1, 1, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ],
  [
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 1, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0
  ]
];

var n = nn({
  layers: [ 12, 6 ],
  iterations: 20000
});
var trainData = [];
correct.forEach(function (item) {
  trainData.push({ input: item, output: [1] });
});
incorrect.forEach(function (item) {
  trainData.push({ input: item, output: [0] });
});
console.time('training');
n.train(trainData);
console.timeEnd('training');

test.forEach(function (item) {
  item.forEach(function (val, i) {
    if (i % 8 === 0) {
      console.log();
    }
    process.stdout.write(val ? '\u25A0' : ' ');
  });
  console.time('send');
  console.dir(n.send(item));
  console.timeEnd('send');
});