function createXORNetworknNguyenWidrowUntrained()
{
// random matrix data. However, it provides a constant starting point
// for the unit tests.
$network = new BasicNetwork();
$network->addLayer(new BasicLayer(null, true, 2));
$network->addLayer(new BasicLayer(new ActivationSigmoid(), true, 3));
$network->addLayer(new BasicLayer(new ActivationSigmoid(), false, 3));
$network->addLayer(new BasicLayer(null, false, 1));
$network->getStructure() . finalizeStructure();
(new NguyenWidrowRandomizer())->randomize($network);
return $network;
}
function createThreeLayerNet()
{
$network = new BasicNetwork();
$network->addLayer(new BasicLayer(2));
$network->addLayer(new BasicLayer(3));
$network->addLayer(new BasicLayer(1));
$network->getStructure()->finalizeStructure();
$network->reset();
return $network;
}