Softmax function

Raise e(the mathematical constant) to the power of each those numbers
Sum up all the exponentails. This result is the denominator.
Use each number’s exponential as its numerator.
calculate numerator / denominator

equation

import numpy as np

def softmax(xs):
    return np.exp(xs)/sum(np.exp(xs))

xs = np.array([-1,0,3,5])
print(softmax(xs))

[0.002 0.006 0.118 0.874]

test = np.array([-4,2,5])
print(softmax(test))
test1 = np.array([-5,-4,-3,-2,-1,4])
np.set_printoptions(formatter={'float': '{: 0.8f}'.format})
print(softmax(test1))

[ 0.00011754  0.04742030  0.95246216]
[ 0.00012212  0.00033195  0.00090233  0.00245278  0.00666736  0.98952347]