static void train_network(void) {
int i, j, time = 0;
double error; /* 误差 */
do {
error = 0.0;
for (i = 0; i < DATA; i++) {
comput_output(i);
for (j = 0; j < OUT; j++)
error += fabs((output_data[j] - data_out[i][j]) / data_out[i][j]);
back_update(i);
}
time++;
printf("%d %lf\n",time, error / DATA);
} while (time < TRAINC && error / DATA > ERROR);
//printf("train finish\n");
}
~cache_impl() { back_update(bool_constant< IsConst>()); }
