EasyNLPnlp-082

Beam Length Normalization

Problem

Return the length-normalized beam score score / (length ** alpha).

Return 0.0 when length is not positive.

Hint

Dividing a negative log score by a growing length makes it less negative.

case 1

in: [-2,2,1]

expected: -1

case 2

in: [-4,4,0.5]

expected: -2

case 3

in: [0.5,1,0.7]

expected: 0.5

case 4

in: [-3,0,1]

expected: 0

case 5

in: [-8,2,2]

expected: -2

Starter codePython

def beam_length_normalization(score, length, alpha):
    # Your code here
    pass

5 test cases · run your code against them in the editor