MATLAB中的神经网络，初始权重

我用newff(...)在MATLAB中建立了神经网络.当您使用相同的输入和输出对其进行训练时，在不同的运行中训练结果会有所不同.我知道发生这种情况是因为每次运行时权重都不同.我的问题是，每次训练NN时如何使初始权重相同，以便获得相同的结果? 此外，是否有可能从训练No1中节省一些权重，然后再将其用于训练No2中?如何实现?

I made Neural Network in MATLAB with newff(...). When you train it with the same inputs and outputs, the training results are different on different runs. I understand that it is happening because the weights are different for each time I run it. My question is how to make initial weights to be the same each time I train my NN so I can get the same results? Also, is it possible to save some weights from training No1 and latter use it for training No2, and how?

Tnx