module 'numpy' has no attribute 'sigmoid'
时间: 2023-11-06 17:05:17 浏览: 185
module 'numpy' does not have an attribute 'sigmoid'. The 'sigmoid' function is not a built-in function in the NumPy module. To use the sigmoid function, you need to import it from the 'scipy.special' module.
Here is an example of how to import and use the sigmoid function from the 'scipy.special' module:
```
import numpy as np
from scipy.special import expit
# Example input array
x = np.array([1, 2, 3])
# Use the sigmoid function
result = expit(x)
print(result)
```
This will output the sigmoid values for each element in the input array.
Related questions:
1. How can I use the sigmoid function in Python?
2. Can you provide more examples of activation functions in machine learning?
3. Are there any other alternatives to the sigmoid function?
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