1.np.log1p:https://blog.csdn.net/qq_36523839/article/details/82422865(数据平滑处理)
- check_random_state(seed):
parameters:seed :
None | int | instance of RandomState
If seed is None, return the RandomState singleton used by np.random. If seed is an int, return a new RandomState instance seeded with seed. If seed is already a RandomState instance, return it. Otherwise raise ValueError.