很容易确定该 BP 网络的输入为 64维。当数字数据混入噪声时，可以看作是对 0、1 数据进行简单的随机反转。比如说，要加入 7%的噪声，那就可以对 4 个 0或者 1 进行反转。反转哪一个，这里是随机的。-very easy to determine the importation of BP network of 64 peacekeepers. When mixed with the noise of digital data, can be seen as data on 0,1 simple random inversion. For example, to join the 7% of the noise, it can be 0 for 4 or for a reversal. What a reversal here is random.