The final reason is that I am not skilled in building the database myself, ┭┮﹏┭┮
First, the error message: IndexError: index 4392 is out of bounds for axis 0 with size 20.
It means that the index of the first dimension of the array overflows. For example, the index of the first dimension of the array a is only 20, but a [4392] appears, so an error is reported.
When I saw this line of error reporting, I was completely at a loss. I didn’t know how to start. I repeatedly checked whether the data in my dataset was constructed incorrectly. I never thought that the label was wrong, because it was doing self-encoding and unsupervised learning. The participation of the label is not required, so it is completely ignored. When writing this line, I did not think carefully, so I must take it as a warning, and the thinking must be clear.
How should I modify it in the end?
label = np.zeros([num, length])
should be changed to
label = np.zeros([num, 1])
The data and target returned to the database are as follows
# data[num,len]，label[num]