MediumNLPnlp-190

Translation Edit Rate

Problem

Return the translation edit rate from an edit count triple: sum of [substitutions, insertions, deletions] divided by the reference length.

Return 0.0 when the reference length is not positive.

Hint

The three edit types are summed before normalizing by the reference length.

case 1

in: [[1,0,0],4]

expected: 0.25

case 2

in: [[0,0,0],5]

expected: 0

case 3

in: [[2,1,1],8]

expected: 0.5

case 4

in: [[1,1,1],0]

expected: 0

Starter codePython

def ter(edit_counts, reference_length):
    # Your code here
    pass

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