public static float train_network(Network net, Data d)
{
int batch = net.Batch;
int n = d.X.Rows / batch;
float[] x = new float[batch * d.X.Cols];
float[] y = new float[batch * d.Y.Cols];
int i;
float sum = 0;
for (i = 0; i < n; ++i)
{
d.get_next_batch(batch, i * batch, x, y);
float err = train_network_datum(net, x, y);
sum += err;
}
return(sum / (n * batch));
}